CN109206816A - A kind of graphene oxide enhancing composite material of polymethyl methacrylate and preparation method thereof - Google Patents

A kind of graphene oxide enhancing composite material of polymethyl methacrylate and preparation method thereof Download PDF

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Publication number
CN109206816A
CN109206816A CN201811031939.9A CN201811031939A CN109206816A CN 109206816 A CN109206816 A CN 109206816A CN 201811031939 A CN201811031939 A CN 201811031939A CN 109206816 A CN109206816 A CN 109206816A
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suspension
graphene oxide
composite material
polymethyl methacrylate
parts
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张慧
张羽
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • C08K3/042Graphene or derivatives, e.g. graphene oxides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/06Elements
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/10Silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/14Glass
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/02Ingredients treated with inorganic substances
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of graphene oxide enhancing composite material of polymethyl methacrylate and preparation method thereof, it is prepared including following parts by weight raw material: 70-80 parts of polymethyl methacrylate, 0.01-0.1 parts of modified graphene oxide, 10-20 parts of modified filler, 5-10 parts of modified additive;The present invention will contain orderly active group and the graphene oxide and polymethyl methacrylate materials handled by modifier modification carries out combined processing in parallel electric field, obtained composite material of polymethyl methacrylate has better toughness, is conducive to composite material of polymethyl methacrylate large-scale application in more areas.

Description

A kind of graphene oxide enhancing composite material of polymethyl methacrylate and its preparation Method
Technical field
The present invention relates to field of compound material, and in particular to a kind of graphene oxide enhancing polymethyl methacrylate is compound Material and preparation method thereof.
Background technique
Graphene oxide is the oxidation material of graphene, has planar structure similar with graphene, since surface is contained A large amount of active group, as hydroxyl (- OH), epoxy group [- C (O) C-], carbonyl (- C=O), carboxyl (- COOH), ester group (- COO-) etc., so graphene oxide and most of materials all have preferable compatibility, and it has property similar with graphene Can, the properties of multiple material can be significantly improved, are one of general composite modification materials best at present, are led in composite material Domain is used widely.Graphene oxide enhancing composite material of polymethyl methacrylate be it is a kind of use graphene oxide into The modified composite material of polymethyl methacrylate of row enhancing is widely used in each neck with excellent mechanical property Domain.But the deficiency of the shortcomings that due to graphene oxide composite material itself and preparation method cause graphene oxide to enhance poly- methyl-prop There are also the possibility further promoted for e pioic acid methyl ester composite property, and especially in the enhancing of toughness, there are also biggish promotions Space, to make graphene oxide enhancing composite material of polymethyl methacrylate that can be answered on a large scale in more fields With.
Summary of the invention
It is an object of the invention to overcome existing for existing graphene oxide enhancing composite material of polymethyl methacrylate The poor defect of toughness provides a kind of graphene oxide enhancing composite material of polymethyl methacrylate and preparation method thereof;This Invention will be containing orderly active group and by the graphene oxide and polymethyl methacrylate materials of modifier modification processing Combined processing is carried out in parallel electric field, obtained composite material of polymethyl methacrylate has better toughness, is conducive to Composite material of polymethyl methacrylate large-scale application in more areas.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of graphene oxide enhancing polymethyl methacrylate is multiple Condensation material is prepared including following parts by weight raw material: 70-80 parts of polymethyl methacrylate, and 0.01-0.1 parts change Property graphene oxide, 10-20 parts of modified filler, 5-10 parts of modified additive.
Wherein, the modified graphene oxide is prepared by following preparation method:
(1) by graphite powder be added be 55% by mass percent concentration sulfuric acid solution and mass percent concentration be 45% nitric acid The first suspension is stirred to obtain in the mixed acid solution that solution mixes;
(2) the first suspension is placed in parallel electric field, potassium permanganate powder is added, heating stirring obtains the second suspension;
(3) after being cooled to room temperature the second suspension, hydrogenperoxide steam generator and hydrochloric acid solution is added, obtains third suspension;
(4) after third suspension being washed with deionized, is filtered dry, the ethanol water for being added 50% is dispersed, and obtains the 4th Suspension;
(5) methallyl alcohol, acrylic acid and the hydro alkoxy that mass ratio is 2 ︰, 4 ︰ 1 are added in the 4th suspension Aluminium, heating after the reaction was completed, obtain the 5th suspension;
(6) the 5th suspension is washed with deionized, is centrifugated, obtain sediment;
(7) sediment is dried in vacuo under constant temperature conditions, obtains modified graphene oxide.
Preferably, the volume ratio of the sulfuric acid solution and nitric acid solution is 3 ︰ 1;Preferred ratio makees the oxidation of graphite With more preferable, carboxyl is more on obtained graphene oxide molecule, stronger with the bonding capability of modifying agent.
Preferably, the mass volume ratio (g ︰ ml) of the graphite powder and mixed acid solution is 2 ︰ 100;Preferred ratio is to stone The oxidation of ink is more preferable, and carboxyl accounting is bigger in obtained graphene oxide, stronger with the bonding capability of modifying agent.
Wherein, under the effect of the parallel electric field described in step (2), polarization occurs for graphitic molecules, prolongs direction of an electric field Graphite electronically active is stronger, so that active group more combines on the direction along electric field line when graphitic molecules are oxidized, Meanwhile can reduce under oxidizing condition, make reaction condition milder, safety;Preferably, the parallel electric field intensity is 2.5- 3.5KV/m;Under preferred electric field strength, the active group order on graphene oxide molecule is best.
Preferably, the mass ratio of the potassium permanganate powder and graphite powder is 1 ︰ 1;Preferred ratio makees the oxidation of graphite With more preferable, carboxyl is more on obtained graphene oxide, stronger with the bonding capability of modifying agent.
Preferably, the heating temperature is 50-70 DEG C;Preferred thermotonus speed is fast, and reaction is thorough, energy consumption Small, production cost is low.
Wherein, in step (3), the concentration of the hydrogenperoxide steam generator is 1.5mol/L;The concentration of hydrochloric acid solution For 1.0mol/L;In the hydrogen peroxide and hydrochloric acid of above-mentioned concentration, the graphene oxide purity being prepared is higher.
Preferably, the volume ratio of the second suspension, hydrogenperoxide steam generator and hydrochloric acid solution is 50 ︰, 2 ︰ 5;In preferred volume Than under, the graphene oxide purity being prepared is best.
Wherein, in step (4), 50% ethanol water and the mass volume ratio (ml ︰ g) of graphite powder are 100 ︰ 2;Dispersion More evenly, modified effect is more preferable.
Preferably, the mass ratio of the modifying agent and graphite powder is 0.1-0.3 ︰ 1;Preferred mass ratio, it is modified The compatibility of graphene oxide and polymethyl methacrylate is best.
Wherein, it is preferred that the temperature of heating reaction is 75-80 DEG C in step (5);In preferred range, modified effect Fruit is best, and the compatibility of obtained graphene oxide and polymethyl methacrylate is best.
Wherein, the modified filler, which refers in the prior art, to have enhancing to be modified polymethyl methacrylate materials The filler of effect;Including one of basalt fibre, glass fibre, carbon fiber or a variety of.
Wherein, the auxiliary agent refer to can improve in the prior art composite material of polymethyl methacrylate processing performance or Assign one of material, including plasticizer, coupling agent, fire retardant, antioxidant of specific function or a variety of.
In order to achieve the above-mentioned object of the invention, further, the present invention provides a kind of graphene oxides to enhance poly- methyl-prop The preparation method of e pioic acid methyl ester composite material, comprising the following steps:
(1) polymethyl methacrylate, modified graphene oxide, modified filler and modified additive are subjected to mixed processing, obtained Mixture;
(2) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Compared with prior art, beneficial effects of the present invention:
1, containing the modified graphene oxide material with orderly active group in composite material of the present invention, obtained composite material Toughness is more preferable.
2, the processing for passing through modifying agent in composite material of the present invention containing modified graphene oxide, with poly-methyl methacrylate The compatibility of ester is more preferable, and obtained composite property is more preferable.
3, the preparation method of composite material of the present invention is simple, reliable, and graphene oxide is suitble to enhance poly-methyl methacrylate Extensive, the industrialized production of ester composite material.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments The range of invention.
Embodiment 1
(1) prepare modified graphene oxide: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;It is that 2g potassium permanganate powder, heating is added in the direct current parallel electric field of 3.0KV/m by the first suspension merging electric field strength It is stirred to 60 DEG C, obtains the second suspension;After second suspension is cooled to room temperature, the concentration that 4ml is added is 1.5mol/L peroxide The concentration for changing hydrogen solution and 10ml is 1.0mol/L hydrochloric acid solution, obtains third suspension;By third suspension deionized water After washing, being filtered dry, 50% ethanol water that 100ml is added is dispersed, and obtains the 4th suspension;In the 4th suspension The mass ratio that 0.4g is added is methallyl alcohol, acrylic acid and the hydro alkoxy aluminium of 2 ︰, 4 ︰ 1, is heated to 78 DEG C, After the reaction was completed, the 5th suspension is obtained;5th suspension is washed with deionized, is centrifugated, sediment is obtained;It will sink Starch is dried in vacuo under constant temperature conditions, obtains oxidation modification graphene;
(2) by 75 parts of polymethyl methacrylate, 0.05 part of modified graphene oxide, 15 parts of glass fibre, 4 parts of idol Join agent and 3 parts of plasticizer carries out mixed processing, obtains mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Embodiment 2
(1) prepare modified graphene oxide: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;It is that 2g potassium permanganate powder, heating is added in the direct current parallel electric field of 3.5KV/m by the first suspension merging electric field strength It is stirred to 70 DEG C, obtains the second suspension;After second suspension is cooled to room temperature, the concentration that 4ml is added is 1.5mol/L peroxide The concentration for changing hydrogen solution and 10ml is 1.0mol/L hydrochloric acid solution, obtains third suspension;By third suspension deionized water After washing, 50% ethanol water that 100ml is added is dispersed, and obtains the 4th suspension;It is added in the 4th suspension The mass ratio of 0.2g is methallyl alcohol, acrylic acid and the hydro alkoxy aluminium of 2 ︰, 4 ︰ 1, is heated to 80 DEG C, reaction After the completion, the 5th suspension is obtained;5th suspension is washed with deionized, is centrifugated, sediment is obtained;By sediment It is dried in vacuo under constant temperature conditions, obtains modified graphene oxide;
(2) by 70 parts of polymethyl methacrylate, 0.01 part of modified graphene oxide, 20 parts of basalt fibre, 5 parts Silane coupling agent and 5 parts of plasticizer carry out mixed processing, obtain mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Embodiment 3
(1) prepare oxidation modification graphene: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;It is that 2g potassium permanganate powder, heating is added in the exchange parallel electric field of 2.5KV/m by the first suspension merging electric field strength It is stirred to 50 DEG C, obtains the second suspension;After second suspension is cooled to room temperature, the concentration that 4ml is added is 1.5mol/L peroxide The concentration for changing hydrogen solution and 10ml is 1.0mol/L hydrochloric acid solution, obtains third suspension;By third suspension deionized water After washing, 50% ethanol water that 100ml is added is dispersed, and obtains the 4th suspension;It is added in the 4th suspension The mass ratio of 0.6g is methallyl alcohol, acrylic acid and the hydro alkoxy aluminium of 2 ︰, 4 ︰ 1, is heated to 75 DEG C, reaction After the completion, the 5th suspension is obtained;5th suspension is washed with deionized, is centrifugated, sediment is obtained;By sediment It is dried in vacuo under constant temperature conditions, obtains modified graphene oxide;
(2) by 80 parts of polymethyl methacrylate, 0.1 part of modified graphene oxide, 10 parts of carbon fiber and 5 parts of coupling Agent carries out mixed processing, obtains mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Comparative example 1
(1) prepare modified graphene oxide: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;2g potassium permanganate powder is added in the first suspension, is heated to 60 DEG C of stirrings, obtains the second suspension;By the second suspended liquid cooling It but is 1.0mol/L hydrochloric acid solution to the concentration that the concentration that 4ml after room temperature, is added is 1.5mol/L hydrogenperoxide steam generator and 10ml, Obtain third suspension;After third suspension is washed with deionized, is filtered dry, be added 50% ethanol water of 100ml into Row dispersion, obtains the 4th suspension;The mass ratio that 0.4g is added in the 4th suspension is the 2- methyl -2- propylene -1- of 2 ︰, 4 ︰ 1 Alcohol, acrylic acid and hydro alkoxy aluminium, are heated to 78 DEG C, after the reaction was completed, obtain the 5th suspension;5th suspension is spent Ion water washing, centrifuge separation, obtain sediment;Sediment is dried in vacuo under constant temperature conditions, obtains oxidation modification Graphene;
(2) by 75 parts of polymethyl methacrylate, 0.05 part of modified graphene oxide, 15 parts of glass fibre, 4 parts of silicon Alkane coupling agent and 3 parts of plasticizer carry out mixed processing, obtain mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Comparative example 2
(1) prepare modified graphene oxide: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;It is that 2g potassium permanganate powder, heating is added in the direct current parallel electric field of 3.0KV/m by the first suspension merging electric field strength It is stirred to 60 DEG C, obtains the second suspension;After second suspension is cooled to room temperature, the concentration that 4ml is added is 1.5mol/L peroxide The concentration for changing hydrogen solution and 10ml is 1.0mol/L hydrochloric acid solution, obtains third suspension;By third suspension deionized water After washing, being filtered dry, 50% ethanol water that 100ml is added is dispersed, and obtains the 4th suspension;4th suspension is used Deionized water washing, centrifuge separation, obtain sediment;Sediment is dried in vacuo under constant temperature conditions, oxidation is obtained and changes Property graphene;
(2) by 75 parts of polymethyl methacrylate, 0.05 part of modified graphene oxide, 15 parts of carbon fiber, 4 parts of coupling Agent and 3 parts of plasticizer carry out mixed processing, obtain mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
Comparative example 3
(1) prepare modified graphene oxide: it is molten that the sulfuric acid for being 55% by the mass percent concentration of 75ml is added in the graphite powder of 2g It is stirred first suspended in the mixed acid solution that the nitric acid solution that liquid and 25ml mass percent concentration are 45% mixes Liquid;It is that 2g potassium permanganate powder, heating is added in the direct current parallel electric field of 3.0KV/m by the first suspension merging electric field strength It is stirred to 60 DEG C, obtains the second suspension;After second suspension is cooled to room temperature, the concentration that 4ml is added is 1.5mol/L peroxide The concentration for changing hydrogen solution and 10ml is 1.0mol/L hydrochloric acid solution, obtains third suspension;By third suspension deionized water After washing, being filtered dry, 50% ethanol water that 100ml is added is dispersed, and obtains the 4th suspension;In the 4th suspension The mass ratio that 0.4g is added is the methallyl alcohol and hydro alkoxy aluminium of 4 ︰ 1, is heated to 78 DEG C, reaction is completed Afterwards, the 5th suspension is obtained;5th suspension is washed with deionized, is centrifugated, sediment is obtained;By sediment in perseverance It is dried in vacuo under the conditions of temperature, obtains oxidation modification graphene;
(2) by 75 parts of polymethyl methacrylate, 0.05 part of modified graphene oxide, 15 parts of glass fibre, 4 parts of idol Join agent and 3 parts of plasticizer carries out mixed processing, obtains mixture;
(3) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
The composite material that will be prepared in above-described embodiment 1-3 and comparative example 1-3, injection molding obtain (every group of sample 10 samples), blank sample is the composite material of polymethyl methacrylate for being not added with graphene oxide, is carried out respectively to sample Performance detection, record data (average data) are as follows:
Performance Tensile strength (MPa) Elongation at break (%) Notch impact strength (kJ/m2)
Embodiment 1 86.94 27.16 25.68
Embodiment 2 87.36 25.87 26.31
Embodiment 3 86.73 28.92 25.97
Comparative example 1 84.38 19.12 25.86
Comparative example 2 82.69 17.82 23.28
Comparative example 3 83.60 20.82 24.02
Blank sample 78.68 13.68 21.27
To above-mentioned analysis of experimental data it is found that composite material is prepared in embodiment 1-3, there is excellent tensile strength, break Split elongation and notch impact strength;And in comparative example 1, the modified graphene oxide of addition is not aoxidized in parallel electric field It handles, active group is in disordered state on graphene oxide, and obtained composite material tensile strength and elongation at break is significant It reduces;The modified graphene oxide added in comparative example 2 is not added with modifying agent, graphene oxide and polymethyl methacrylate Compatibility reduces, and tensile strength, elongation at break and the notch impact strength of the composite material caused significantly reduce;It is right When graphene oxide is modified in ratio 3, the modifying agent of addition is not given to this invention, modified graphene oxide material and poly- The compatibility of methyl methacrylate reduces, and leads to the tensile strength, elongation at break and the notch shock that obtain part composite material Intensity decreases.

Claims (10)

1. a kind of graphene oxide enhances composite material of polymethyl methacrylate, which is characterized in that former including following parts by weight Material is prepared: 70-80 parts of polymethyl methacrylate, 0.01-0.1 parts of modified graphene oxide, and 10-20 parts change Property filler, 5-10 parts of modified additive;
The modified graphene oxide is prepared by following preparation method:
(1) by graphite powder be added be 55% by mass percent concentration sulfuric acid solution and mass percent concentration be 45% nitric acid The first suspension is stirred to obtain in the mixed acid solution that solution mixes;
(2) the first suspension is placed in parallel electric field, potassium permanganate powder is added, heating stirring obtains the second suspension;
(3) after being cooled to room temperature the second suspension, hydrogenperoxide steam generator and hydrochloric acid solution is added, obtains third suspension;
(4) after third suspension being washed with deionized, is filtered dry, the ethanol water for being added 50% is dispersed, and obtains the 4th Suspension;
(5) methallyl alcohol, acrylic acid and the hydro alkoxy that mass ratio is 2 ︰, 4 ︰ 1 are added in the 4th suspension Aluminium, heating after the reaction was completed, obtain the 5th suspension;
(6) the 5th suspension is washed with deionized, is centrifugated, obtain sediment;
(7) sediment is dried in vacuo under constant temperature conditions, obtains modified graphene oxide.
2. composite material according to claim 1, which is characterized in that the volume ratio of the sulfuric acid solution and nitric acid solution For 3 ︰ 1.
3. composite material according to claim 1, which is characterized in that the quality volume of the graphite powder and mixed acid solution It is 2 ︰ 100 than (g ︰ ml).
4. composite material according to claim 1, which is characterized in that the parallel electric field intensity is 2.5-4.5KV/m.
5. composite material according to claim 1, which is characterized in that the mass ratio of the potassium permanganate powder and graphite powder For 1 ︰ 1.
6. composite material according to claim 1, which is characterized in that heating temperature described in step (2) is 50-70 DEG C.
7. composite material according to claim 1, which is characterized in that the concentration of the hydrogenperoxide steam generator is 1. 5mol/L;The concentration of hydrochloric acid solution is 1.0mol/L.
8. composite material according to claim 1, which is characterized in that the second suspension, hydrogenperoxide steam generator and hydrochloric acid are molten The volume ratio of liquid is 50 ︰, 2 ︰ 5.
9. composite material according to claim 1, which is characterized in that the mass ratio of the modifying agent and graphite powder is 0.1-0.3 ︰ 1.
10. a kind of preparation of any one of claim 1-9 graphene oxide enhancing composite material of polymethyl methacrylate Method, which comprises the following steps:
(1) polymethyl methacrylate, modified graphene oxide, modified filler and modified additive are subjected to mixed processing, obtained Mixture;
(2) mixture is squeezed out with double screw extruder, it is compound obtains graphene oxide enhancing polymethyl methacrylate Material.
CN201811031939.9A 2018-09-05 2018-09-05 A kind of graphene oxide enhancing composite material of polymethyl methacrylate and preparation method thereof Withdrawn CN109206816A (en)

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Application Number Priority Date Filing Date Title
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