Graphene-containing Viscose Fiber and Preparation Method thereof

Yilin TANG

Patent

Atlas literature

Patent

US 10,196,460

Graphene-containing Viscose Fiber and Preparation Method thereof

Yilin TANG

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

9 independent · 7 dependent

1
Independentnon-oxidized grapheneviscose fiberlignocellulose from corncob hydrolysis
A method for preparing a viscose ﬁber, comprising: adding a graphene with no more than layers to a viscose or a semi-ﬁnished viscose, wherein the graphene added is a non-oxidized graphene, wherein the g raphene is prepared by a method comprisin q: 1) hydrolyzing corncobs in an aqueous inorganic acidic solution to generate lign oce llu loses; 2) treatin q the li g nocelluloses with a treatment a g ent at 70 C- 180 OC to provide porous celluloses, wherein the treatment a g ent is selected from the g roup consistin of an acid, an acid-sulﬁte, an alkali-sulﬁte and combination thereof; 3) treatin the porous celluloses with a catalyst selected from the g roup consistin of man c anese chloride, ferric chloride, ferrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate, ferrous sulfate, potassium ferricyanide, potassium ferrocyanide, potassium trioxalatoferrate, cobalt chloride, cobalt nitrate, cobalt sulfate, cobalt acetate, nickel chloride, nickel nitrate, nickel sulfate, and nickel acetate, and conducting a drying step at a dr yinq temperature of 50 °C-150 C; 4) in an oxy g en-free environment, placin g the porous celluloses obtained in the previous step successively at 300 C-400 C, 800 C-900 C, 1100 C-1300 C, 300 C-400 0C, and 900 °C-1000 0C for thermal insulation to provide a g raphene precursor; and 5) washin g the g raphene precursor with alkali, acid, and water respectively to g enerate the g raphene. Currently amended
1. 2
  Dependent← claim 1non-oxidized grapheneviscose fiber
  The method according to Claim 1, wherein the quantity of the graphene used is 0.05-1.0% of a-cellulose in the viscose or semi-ﬁnished viscose. Currently amended
2. 5
  Dependent← claim 1non-oxidized grapheneviscose fiber
  The method according to Claim 1, wherein preparation of the viscose ﬁber comprises steps of impregnating, squeezing, crushing, ageing, xanthation, dissolving, ripening, ﬁltering, and debubbling of a pulp, and wherein the graphene is added to the viscose-prior to the ﬁltering step. Currently amended
3. 7
  Dependent← claim 1non-oxidized grapheneviscose fiber
  The method according to Claim 1, wherein preparation of the viscose ﬁber comprises steps of impregnating, squeezing, crushing, ageing, xanthation, dissolving, ripening, ﬁltering, and debubbling of a pulp, and wherein the graphene is added to the semi-ﬁnished viscose during the dissolving step, and the graphene is dispersed in advance in a dilute alkaline solution which is used to dissolve cellulose xanthates. Currently amended
4
Independent
. Canceled
9
Independentnon-oxidized grapheneviscose fibergraphene-containing viscose fiber
A viscose ﬁber, comprising a graphene, wherein the graphene is non- oxidized graphene. Withdrawn
1. 10
  Dependent← claim 9non-oxidized graphenegraphene-containing viscose fiber
  The viscose ﬁber according to claim 9, wherein the graphene comprises 10 or fewer layers. Withdrawn
11
Independentlignocellulose from corncob hydrolysis
The method according to Claim [[4]] 1, wherein the lignocelluloses are treated with a treatment agent at 90 ° C-150 °C. Currently amended
12
Independentlignocellulose from corncob hydrolysis
The method according to Claim [[4]] 1, wherein the lignocelluloses are treated with a treatment agent at 100 C-120 C. Currently amended
13
Independentlignocellulose from corncob hydrolysisH₂SO₄
The method according to Claim [[4]] 1, wherein the treatment agent is sulfuric acid. Currently amended
14
Independent
1 4. The method according to Claim [[4]] 1, hydroxide, ammonium hydroxide or magnesium
15
Independent
The method according to Claim [[4]] 1, wherein sulﬁte, sodium sulﬁte or ammonium sulﬁte. Currently
16
Independent
The method according to Claim [[4]] 1, wherein Currently amended wherein the alkali is calcium hydroxide, sodium hydroxide. Currently amended the sulﬁte is calcium sulﬁte, magnesium amended the drying temperature is 80 ° C -120 °C.

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

graphene-containing viscose fiber

non-oxidized graphenefunctional filler

viscose fiberfiber matrix

Materials

Materials described outside the worked examples.

non-oxidized graphene

Functional Additive In Viscose Fiber

viscose fiber

Product Fiber

Process steps

Additional fabrication and treatment steps described in the patent.

Thermal Treatment Graphene Synthesis

Step 1

Temperature

300, 400, 800, 900, 1100, 1300, 300, 400, 900, 1000°C

Ambient

oxygen-free

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Far Infrared Normal Emissivity	≥ 0.8 dimensionless	viscose fiber

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