Patent
HEXAGONAL BORON NITRIDE COMPOSITIONS CHARACTERIZED BY INTERSTITIAL FERROMAGNETIC LAYERS, PROCESS FOR PREPARING, AND COMPOSITES THEREOF WITH ORGANIC POLYMERS
US
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Figure 1 is a schematic representation of the structure of hexagonal boron nitride (hBN) showing the registration of adjacent platelet layers.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 9 shows the X-ray diffraction results obtained on the Ni- modified hBN of Example 1, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN. 15
Figure 10 shows the X-ray diffraction results obtained on the Ni- modified hBN of Examples 5-7, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN.
Figure 11 Figure. 9 shows the X-ray diffraction results obtained on the Fe-modified hBN of Example 8, showing peaks corresponding to high 20 concentrations of crystalline metallic Fe, and no indication of turbostratic BN.
Figure 12
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A composition comprising modified hexagonal boron nitride (hBN) p l ate let-par4i4& comprising a plurality of registered layers of hexa g onal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
The composition of Claim 1 wherein the ferromagnetic metal is Ni.
The composition of Claim 1 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The composition of Claim 1 wherein the ferromagnetic is present at a concentration of 4 to 6% by weight relative to the weight of the composition.
The composition of Claim 1 wherein the ferromagnetic metal is present in the form of particles with a diameter ranging from 2 to 300 nm.
The composition of Claim 1 further comprising an organic polymer.
A film comprising an organic polymer and particles of a modified hexagonal boron nitride dispersed therewithin, said modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
A process for obtaining modified hexagonal boron nitride particles com p risin g a p lurality of re g istered la y ers of hexa g onal boron nitride and a ferromagnetic metal interstitially dis p osed between said layers of boron nitride, the process comprising the steps: Application No.: 12/641350 Docket No.: CL₃₈₆₉USNA Confirmation No.: 1456 Page 4 (a) combining an aqueous solution of a salt of a ferromagnetic metal and NH[4] 4O H in a molar ratio of metal to NH[4] 4 + in the range of 1:10 to 10:1 to form an aqueous solution.
The process of Claim 13 wherein the ferromagnetic metal is Ni.
The process of Claim 13 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The process of Claim 13 wherein said drying and annealing are conducted in a single step.
The process of Claim 13 wherein the metal to NH[4] 4 ratio is in the range of 1:2 to 1:1.
The process of Claim 13 wherein the reducing atmosphere comprises N[2] 2 and H[2] 2.
The process of Claim 13 further comprising the steps: {a) (_ dispersing modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride in a flowable organic polymer composition to form a flowable composite; {b) (f)casting a film with said flowable composite; () (g)subjecting said cast film, while still in the flowable state, to an orienting magnetic field to form magnetically oriented modified hBN particles; and, {).(.L causing said film to be converted to the non-flowable state while at least a portion of said magnetically oriented modified hBN particles retain their magnetic orientation.
Layer stacks claimed or described, ordered top of device to substrate.
magnetically oriented hBN-polymer composite film
Materials described outside the worked examples.
hexagonal boron nitride platelet particles
BN
ferromagnetic metal (interstitial)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
optimal ferromagnetic metal loading for magnetic orientability | 4–6 wt% | ferromagnetic metal (interstitial) |
claimed ferromagnetic metal concentration range | 4–6 wt% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic representation of the structure of hexagonal boron nitride (hBN) showing the registration of adjacent platelet layers.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 9 shows the X-ray diffraction results obtained on the Ni- modified hBN of Example 1, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN. 15
Figure 10 shows the X-ray diffraction results obtained on the Ni- modified hBN of Examples 5-7, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN.
Figure 11 Figure. 9 shows the X-ray diffraction results obtained on the Fe-modified hBN of Example 8, showing peaks corresponding to high 20 concentrations of crystalline metallic Fe, and no indication of turbostratic BN.
Figure 12
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A composition comprising modified hexagonal boron nitride (hBN) p l ate let-par4i4& comprising a plurality of registered layers of hexa g onal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
The composition of Claim 1 wherein the ferromagnetic metal is Ni.
The composition of Claim 1 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The composition of Claim 1 wherein the ferromagnetic is present at a concentration of 4 to 6% by weight relative to the weight of the composition.
The composition of Claim 1 wherein the ferromagnetic metal is present in the form of particles with a diameter ranging from 2 to 300 nm.
The composition of Claim 1 further comprising an organic polymer.
A film comprising an organic polymer and particles of a modified hexagonal boron nitride dispersed therewithin, said modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
A process for obtaining modified hexagonal boron nitride particles com p risin g a p lurality of re g istered la y ers of hexa g onal boron nitride and a ferromagnetic metal interstitially dis p osed between said layers of boron nitride, the process comprising the steps: Application No.: 12/641350 Docket No.: CL₃₈₆₉USNA Confirmation No.: 1456 Page 4 (a) combining an aqueous solution of a salt of a ferromagnetic metal and NH[4] 4O H in a molar ratio of metal to NH[4] 4 + in the range of 1:10 to 10:1 to form an aqueous solution.
The process of Claim 13 wherein the ferromagnetic metal is Ni.
The process of Claim 13 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The process of Claim 13 wherein said drying and annealing are conducted in a single step.
The process of Claim 13 wherein the metal to NH[4] 4 ratio is in the range of 1:2 to 1:1.
The process of Claim 13 wherein the reducing atmosphere comprises N[2] 2 and H[2] 2.
The process of Claim 13 further comprising the steps: {a) (_ dispersing modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride in a flowable organic polymer composition to form a flowable composite; {b) (f)casting a film with said flowable composite; () (g)subjecting said cast film, while still in the flowable state, to an orienting magnetic field to form magnetically oriented modified hBN particles; and, {).(.L causing said film to be converted to the non-flowable state while at least a portion of said magnetically oriented modified hBN particles retain their magnetic orientation.
Layer stacks claimed or described, ordered top of device to substrate.
magnetically oriented hBN-polymer composite film
Materials described outside the worked examples.
hexagonal boron nitride platelet particles
BN
ferromagnetic metal (interstitial)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
optimal ferromagnetic metal loading for magnetic orientability | 4–6 wt% | ferromagnetic metal (interstitial) |
claimed ferromagnetic metal concentration range | 4–6 wt% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic representation of the structure of hexagonal boron nitride (hBN) showing the registration of adjacent platelet layers.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 9 shows the X-ray diffraction results obtained on the Ni- modified hBN of Example 1, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN. 15
Figure 10 shows the X-ray diffraction results obtained on the Ni- modified hBN of Examples 5-7, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN.
Figure 11 Figure. 9 shows the X-ray diffraction results obtained on the Fe-modified hBN of Example 8, showing peaks corresponding to high 20 concentrations of crystalline metallic Fe, and no indication of turbostratic BN.
Figure 12
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A composition comprising modified hexagonal boron nitride (hBN) p l ate let-par4i4& comprising a plurality of registered layers of hexa g onal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
The composition of Claim 1 wherein the ferromagnetic metal is Ni.
The composition of Claim 1 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The composition of Claim 1 wherein the ferromagnetic is present at a concentration of 4 to 6% by weight relative to the weight of the composition.
The composition of Claim 1 wherein the ferromagnetic metal is present in the form of particles with a diameter ranging from 2 to 300 nm.
The composition of Claim 1 further comprising an organic polymer.
A film comprising an organic polymer and particles of a modified hexagonal boron nitride dispersed therewithin, said modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
A process for obtaining modified hexagonal boron nitride particles com p risin g a p lurality of re g istered la y ers of hexa g onal boron nitride and a ferromagnetic metal interstitially dis p osed between said layers of boron nitride, the process comprising the steps: Application No.: 12/641350 Docket No.: CL₃₈₆₉USNA Confirmation No.: 1456 Page 4 (a) combining an aqueous solution of a salt of a ferromagnetic metal and NH[4] 4O H in a molar ratio of metal to NH[4] 4 + in the range of 1:10 to 10:1 to form an aqueous solution.
The process of Claim 13 wherein the ferromagnetic metal is Ni.
The process of Claim 13 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The process of Claim 13 wherein said drying and annealing are conducted in a single step.
The process of Claim 13 wherein the metal to NH[4] 4 ratio is in the range of 1:2 to 1:1.
The process of Claim 13 wherein the reducing atmosphere comprises N[2] 2 and H[2] 2.
The process of Claim 13 further comprising the steps: {a) (_ dispersing modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride in a flowable organic polymer composition to form a flowable composite; {b) (f)casting a film with said flowable composite; () (g)subjecting said cast film, while still in the flowable state, to an orienting magnetic field to form magnetically oriented modified hBN particles; and, {).(.L causing said film to be converted to the non-flowable state while at least a portion of said magnetically oriented modified hBN particles retain their magnetic orientation.
Layer stacks claimed or described, ordered top of device to substrate.
magnetically oriented hBN-polymer composite film
Materials described outside the worked examples.
hexagonal boron nitride platelet particles
BN
ferromagnetic metal (interstitial)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
optimal ferromagnetic metal loading for magnetic orientability | 4–6 wt% | ferromagnetic metal (interstitial) |
claimed ferromagnetic metal concentration range | 4–6 wt% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic representation of the structure of hexagonal boron nitride (hBN) showing the registration of adjacent platelet layers.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 9 shows the X-ray diffraction results obtained on the Ni- modified hBN of Example 1, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN. 15
Figure 10 shows the X-ray diffraction results obtained on the Ni- modified hBN of Examples 5-7, showing peaks corresponding to high concentrations of crystalline metallic Ni, and no indication of turbostratic BN.
Figure 11 Figure. 9 shows the X-ray diffraction results obtained on the Fe-modified hBN of Example 8, showing peaks corresponding to high 20 concentrations of crystalline metallic Fe, and no indication of turbostratic BN.
Figure 12
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A composition comprising modified hexagonal boron nitride (hBN) p l ate let-par4i4& comprising a plurality of registered layers of hexa g onal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
The composition of Claim 1 wherein the ferromagnetic metal is Ni.
The composition of Claim 1 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The composition of Claim 1 wherein the ferromagnetic is present at a concentration of 4 to 6% by weight relative to the weight of the composition.
The composition of Claim 1 wherein the ferromagnetic metal is present in the form of particles with a diameter ranging from 2 to 300 nm.
The composition of Claim 1 further comprising an organic polymer.
A film comprising an organic polymer and particles of a modified hexagonal boron nitride dispersed therewithin, said modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride.
A process for obtaining modified hexagonal boron nitride particles com p risin g a p lurality of re g istered la y ers of hexa g onal boron nitride and a ferromagnetic metal interstitially dis p osed between said layers of boron nitride, the process comprising the steps: Application No.: 12/641350 Docket No.: CL₃₈₆₉USNA Confirmation No.: 1456 Page 4 (a) combining an aqueous solution of a salt of a ferromagnetic metal and NH[4] 4O H in a molar ratio of metal to NH[4] 4 + in the range of 1:10 to 10:1 to form an aqueous solution.
The process of Claim 13 wherein the ferromagnetic metal is Ni.
The process of Claim 13 wherein the hexagonal boron nitride particles have a maximum in-plane dimension in the range of 0.5 to 50 micrometers.
The process of Claim 13 wherein said drying and annealing are conducted in a single step.
The process of Claim 13 wherein the metal to NH[4] 4 ratio is in the range of 1:2 to 1:1.
The process of Claim 13 wherein the reducing atmosphere comprises N[2] 2 and H[2] 2.
The process of Claim 13 further comprising the steps: {a) (_ dispersing modified hexagonal boron nitride comprising a plurality of registered layers of hexagonal boron nitride and a ferromagnetic metal interstitially disposed between said layers of boron nitride in a flowable organic polymer composition to form a flowable composite; {b) (f)casting a film with said flowable composite; () (g)subjecting said cast film, while still in the flowable state, to an orienting magnetic field to form magnetically oriented modified hBN particles; and, {).(.L causing said film to be converted to the non-flowable state while at least a portion of said magnetically oriented modified hBN particles retain their magnetic orientation.
Layer stacks claimed or described, ordered top of device to substrate.
magnetically oriented hBN-polymer composite film
Materials described outside the worked examples.
hexagonal boron nitride platelet particles
BN
ferromagnetic metal (interstitial)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2 is a transverse electron micrograph (TEM) of a cross- section of as-received, unmodified hBN showing the tight packing and linear 20 character of the layered platelet structure.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
optimal ferromagnetic metal loading for magnetic orientability | 4–6 wt% | ferromagnetic metal (interstitial) |
claimed ferromagnetic metal concentration range | 4–6 wt% |
Related documents with shared materials, methods, properties, or citations.
nickel
Ni
organic polymer
uncured epoxy resin
polyamic acid
cured epoxy resin
polyimide
modified hexagonal boron nitride
nickel nitrate
Ni(NO₃)2
cobalt
Co
iron
Fe
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
ferromagnetic metal (interstitial) |
hBN particle maximum in-plane dimension (claimed range) | 0.5–50 micrometers | BN |
ferromagnetic metal particle diameter (claimed range) | 2–300 nm | ferromagnetic metal (interstitial) |
modified hBN loading in composite (claimed range) | 1–40 wt% | modified hexagonal boron nitride |
magnetic field required for orientation of modified hBN | ≤ 1000 gauss | modified hexagonal boron nitride |
Thickness | 8–14 µm | — |
Thickness | 16–30 µm | — |
Thickness | 0.7–1 µm | — |
Thickness | 0.5–50 µm | — |
Duration | ≤ 1 second | — |
Duration | ≤ 1 min | — |
nickel
Ni
organic polymer
uncured epoxy resin
polyamic acid
cured epoxy resin
polyimide
modified hexagonal boron nitride
nickel nitrate
Ni(NO₃)2
cobalt
Co
iron
Fe
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
ferromagnetic metal (interstitial) |
hBN particle maximum in-plane dimension (claimed range) | 0.5–50 micrometers | BN |
ferromagnetic metal particle diameter (claimed range) | 2–300 nm | ferromagnetic metal (interstitial) |
modified hBN loading in composite (claimed range) | 1–40 wt% | modified hexagonal boron nitride |
magnetic field required for orientation of modified hBN | ≤ 1000 gauss | modified hexagonal boron nitride |
Thickness | 8–14 µm | — |
Thickness | 16–30 µm | — |
Thickness | 0.7–1 µm | — |
Thickness | 0.5–50 µm | — |
Duration | ≤ 1 second | — |
Duration | ≤ 1 min | — |
nickel
Ni
organic polymer
uncured epoxy resin
polyamic acid
cured epoxy resin
polyimide
modified hexagonal boron nitride
nickel nitrate
Ni(NO₃)2
cobalt
Co
iron
Fe
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
ferromagnetic metal (interstitial) |
hBN particle maximum in-plane dimension (claimed range) | 0.5–50 micrometers | BN |
ferromagnetic metal particle diameter (claimed range) | 2–300 nm | ferromagnetic metal (interstitial) |
modified hBN loading in composite (claimed range) | 1–40 wt% | modified hexagonal boron nitride |
magnetic field required for orientation of modified hBN | ≤ 1000 gauss | modified hexagonal boron nitride |
Thickness | 8–14 µm | — |
Thickness | 16–30 µm | — |
Thickness | 0.7–1 µm | — |
Thickness | 0.5–50 µm | — |
Duration | ≤ 1 second | — |
Duration | ≤ 1 min | — |
nickel
Ni
organic polymer
uncured epoxy resin
polyamic acid
cured epoxy resin
polyimide
modified hexagonal boron nitride
nickel nitrate
Ni(NO₃)2
cobalt
Co
iron
Fe
Figure 3 is a TEM of a cross-section of the modified hBN of Example 1, showing the disruption of the tight packing and linearity of adjacent platelets as a result of the formation of interstitial nano-scale metallic nickel sheet between hBN platelets. 25
Figure 4 is a scanning electron micrograph (SEM) of the surface of a hBN particle with a few particles of nickel scattered about, as prepared according to Comparative Example A.
Figure 5 is a TEM of the cross-section of the hBN plus nickel compound of Comparative Example A. The morphology is indistinguishable from that in
Figure 6 show the x-ray diffraction (XRD) results obtained on the 5 compound of Comparative Example A. The shoulder in the range of 42: 28 5 44 is indicative of the formation of turbostratic BN.
Figure 7 is a SEM of the surface of the Ni-modified hBN of Example 1. Numerous metallic Ni particles are shown adhering to the surface, as well as below the surface layer. 10
Figure 8 is a TEM showing the growth of epitaxial Ni crystals along the edge of the Ni-modified hBN of Example 1.
Figure 13 shows the XRD patterns at different magnetic field 25 strengths as crystalline orientation changes in the magnetic field of the modified hBN/polyamic acid composite of
ferromagnetic metal (interstitial) |
hBN particle maximum in-plane dimension (claimed range) | 0.5–50 micrometers | BN |
ferromagnetic metal particle diameter (claimed range) | 2–300 nm | ferromagnetic metal (interstitial) |
modified hBN loading in composite (claimed range) | 1–40 wt% | modified hexagonal boron nitride |
magnetic field required for orientation of modified hBN | ≤ 1000 gauss | modified hexagonal boron nitride |
Thickness | 8–14 µm | — |
Thickness | 16–30 µm | — |
Thickness | 0.7–1 µm | — |
Thickness | 0.5–50 µm | — |
Duration | ≤ 1 second | — |
Duration | ≤ 1 min | — |