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Preparation method of high-strength graphene material

A graphene, high-strength technology, applied in the field of preparation of high-strength graphene materials, can solve the problems of poor compression set, low elongation at break, high cost, etc., and achieve precise preparation, good conductivity and low cost. Effect

Inactive Publication Date: 2018-09-11
苏州牛麦田新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for preparing a high-strength graphene material, which solves the technical problems of existing graphene materials such as high cost, poor compression set, low elongation at break, and low hardness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Weigh according to the ratio of parts by mass: 100 parts of graphite, 8 parts of phthalic acid diester, 30 parts of methyl isobutyl ketone, 4 parts of trinonylphenyl phosphite, 1 part of SEBS, 15 parts of hemp fiber 0.3 parts of calcium stearate, 15 parts of polyvinylidene fluoride, 3 parts of zinc oxide, 1 part of titanium dioxide, 40 parts of PVC, 8 parts of CPE, 20 parts of SMA, 10 parts of graphene oxide, and 2 parts of crosslinking agent AD.

[0026] Step 2: put graphite, polyvinylidene fluoride and PVC into the grinder and grind for 15 minutes, pass through a 200-mesh sieve and put them into an oven for drying for 20 minutes. Put isobutyl ketone, trinonylphenyl phosphite and hemp fiber together into a reaction kettle equipped with a thermometer, a heating device and a stirring device, raise the temperature to 55°C, and stir for 30 minutes at a stirring speed of 200 r / min.

[0027] Step 3: Add calcium stearate, titanium dioxide, CPE and SMA, heat up to 80°C...

Embodiment 2

[0031] Step 1: Weigh according to the ratio of parts by mass: 100 parts of graphite, 12 parts of phthalic acid diester, 40 parts of methyl isobutyl ketone, 8 parts of trinonylphenyl phosphite, 20 parts of SEBS, 25 parts of hemp fiber 0.7 parts of calcium stearate, 35 parts of polyvinylidene fluoride, 7 parts of zinc oxide, 5 parts of titanium dioxide, 80 parts of PVC, 12 parts of CPE, 30 parts of SMA, 30 parts of graphene oxide, and 6 parts of crosslinking agent AD.

[0032] The second step: put graphite, polyvinylidene fluoride and PVC into the grinder and grind for 55 minutes, pass through a 300-mesh sieve and put them into the oven for drying for 40 minutes. Put isobutyl ketone, trinonylphenyl phosphite and hemp fiber together into a reaction kettle equipped with a thermometer, a heating device and a stirring device, raise the temperature to 65°C, and stir for 50 minutes at a stirring speed of 300 r / min.

[0033] Step 3: Add calcium stearate, titanium dioxide, CPE and SMA, he...

Embodiment 3

[0037] Step 1: Weigh according to the ratio of parts by mass: 100 parts of graphite, 10 parts of phthalic acid diester, 35 parts of methyl isobutyl ketone, 6 parts of trinonylphenyl phosphite, 10 parts of SEBS, 20 parts of hemp fiber 0.5 parts of calcium stearate, 25 parts of polyvinylidene fluoride, 5 parts of zinc oxide, 3 parts of titanium dioxide, 60 parts of PVC, 10 parts of CPE, 25 parts of SMA, 20 parts of graphene oxide, and 4 parts of crosslinking agent AD.

[0038] Step 2: Put graphite, polyvinylidene fluoride and PVC into a grinder and grind for 35 minutes, pass through a 250-mesh sieve and put them into an oven to dry for 30 minutes. Put isobutyl ketone, trinonylphenyl phosphite and hemp fiber together into a reaction kettle equipped with a thermometer, a heating device and a stirring device, raise the temperature to 60°C, and stir for 40 minutes at a stirring speed of 250 r / min.

[0039] Step 3: Add calcium stearate, titanium dioxide, CPE and SMA, raise the temper...

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PUM

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Abstract

The invention discloses a preparation method of a high-strength graphene material. The preparation method comprises the following steps of: taking raw materials of graphite, diester phthalate, methylisobutyl ketone, trinonyl phenyl ester phosphite, SEBS (Styrene-Ethylene-Butylene-Styrene), fibrilia, calcium stearate, polyvinylidene fluoride, zinc oxide, titanium dioxide, PVC (polyvinyl chloride),CPE (Chlorinated Polyethylene), SMA (Stone Mastic Asphalt), graphene oxide and a crosslinking agent, uniformly mixing, plastically granulating, and then calcining to obtain the high-strength graphenematerial. The preparation method disclosed by the invention has the beneficial effects that the raw materials are wide in source and low in cost, the Rockwell hardness is 110-150, the high-strength graphene material can be self-extinguished after leaving from a fire, and the thermal deformation temperature is increased by 20-30%; the elongation at break is up to 300-500%, and the tensile strengthis 80-120MPa; the permanent compression deformability is good, the energy density is high, the conductivity is good and the thermal conductivity is 35-55W / (m.k); the high-strength graphene material is good in printing electrode property, is high-efficiency and energy-saving and can be accurately prepared; all the components generate a synergistic effect, and the notched impact strength is 70-110J / m; the high-strength graphene material is convenient in use, good in thermal conductivity and simple in process, and can be widely used.

Description

technical field [0001] The invention relates to graphene materials, in particular to a preparation method of high-strength graphene materials. Background technique [0002] Graphene is one of the materials with the highest strength known, and it also has good toughness and can be bent. The theoretical Young's modulus of graphene reaches 1.0TPa, and its inherent tensile strength is 130GPa. The reduced graphene modified by hydrogen plasma also has very good strength, and the average modulus can be greater than 0.25TPa. Graphite paper composed of graphene flakes has many pores, so graphite paper is very brittle. However, functionalized graphene obtained through oxidation, and then graphite paper made from functionalized graphene will be extremely strong and strong. [0003] The carrier mobility of graphene at room temperature is about 15000 cm 2 / (V s), this value is more than 10 times that of silicon materials, and more than twice that of indium antimonide (InSb), the materi...

Claims

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Application Information

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IPC IPC(8): C04B35/52C04B35/622
CPCC04B35/522C04B35/622C04B2235/3232C04B2235/3284C04B2235/96C04B2235/9607
Inventor 王勇夏英
Owner 苏州牛麦田新材料科技有限公司
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