CN104804157A - Anti-abrasion graphene oxide composite melamine resin and preparation method thereof - Google Patents
Anti-abrasion graphene oxide composite melamine resin and preparation method thereof Download PDFInfo
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- CN104804157A CN104804157A CN201510220462.9A CN201510220462A CN104804157A CN 104804157 A CN104804157 A CN 104804157A CN 201510220462 A CN201510220462 A CN 201510220462A CN 104804157 A CN104804157 A CN 104804157A
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Abstract
The invention discloses anti-abrasion graphene oxide composite melamine resin which is prepared from the following raw materials in parts by weight: 0.1-0.2 part of silicon carbide, 0.2-0.3 part of a silicon nitride nanowire, 20-25 parts of melamine, 40-45 parts of 37% formalin, 1.8-2.1 parts of graphene oxide, 0.7-0.9 part of trifluoroethyl methacrylate, 0.7-0.9 part of polyacrylonitrile, a proper amount of dimethylformamide, 0.2-0.3 part of polyoxyethylene, a proper amount of a composite solvent with the volume ratio of dimethylformamide to dichloromethane of 1: 1, 0.3-0.5 part of tert-butyl hydroperoxide, a proper amount of citric acid, a proper amount of an alkaline pH value adjustment agent AMP-95 and a proper amount of ethyl alcohol. The resin is added with the graphene oxide, so that the heat conduction coefficient is increased by 38 percent than the resin which is not added with the graphene oxide; by adding of silicon carbide and the silicon nitride nanowire, the abrasion resistance, the hardness and the heat resistance of the resin are improved.
Description
Technical field
The present invention relates to melmac Material Field, particularly relate to a kind of wear-resisting graphene oxide compound melmac and preparation method thereof.
Background technology
Graphene is by the carbonaceous material with the cellular crystalline network of two dimensional surface of the tightly packed one-tenth of monolayer carbon atom, and the nanostructure of its uniqueness determines that it has the performance of a series of excellence, and theoretical specific surface area is up to 2600 ㎡/g; Thermal conductivity is up to 5000W/ (m.K), for adamantine 5 times, intensity is the highest in known materials, reach 130GPa, it is more than 100 times of steel, at present, Graphene is considered to have a wide range of applications space in functional composite material, nano-device, energy storage material and support of the catalyst etc.
Utilize the excellent properties of Graphene, prepare Graphene/polymer composites, first the problem of Graphene stable dispersion in the polymer will be solved, surface of graphene oxide is with many oxygen-containing functional groups, although oxygenizement to a certain degree destroys the crystalline network of Graphene, but the interaction that these functional groups can be strong with polymer formation, thus improve the performance of matrix material.The method preparing graphene oxide/polymer composites mainly contains solution blended process, melt-blending process, in-situ polymerization intercalated method.
Melmac and melamine formaldehyde resin are a kind of widely used thermosetting resines.By using graphene oxide to carry out polymeric modification, the thermostability of resin can be improved, electroconductibility, thermal conductivity.But the improvement in performance of single graphene oxide to resin is limited, also need the performance further improving resin, can by improving technique and the performance becoming to assign to improve resin; Such as need to improve intensity, water-resistant capacity, thermostability, wear resistance, hardness, to the resistivity of chemicals, the performance such as poor toughness is easily broken, the shelf lives is short, make this resin widely for aspects such as furniture, vehicle, buildings.
Summary of the invention
The object of the present invention is to provide a kind of wear-resisting graphene oxide compound melmac, this resin thermal conductivity is good, and hardness is high, and wear resistance is good.
Technical scheme of the present invention is as follows:
A kind of wear-resisting graphene oxide compound melmac, it is characterized in that being made up of the raw material of following weight part: silicon carbide 0.1-0.2, beta-silicon nitride nanowire 0.2-0.3, trimeric cyanamide 20-25, 37% formalin 40-45, graphene oxide 1.8-2.1, trifluoroethyl methacrylate 0.7-0.9, polyacrylonitrile 0.7-0.9, dimethyl formamide is appropriate, polyoxyethylene 0.2-0.3, dimethylformamide/dichloromethane volume ratio is that 1:1 double solvents is appropriate, tertbutyl peroxide 0.3-0.5, citric acid is appropriate, pH value regulator AMP-95 is appropriate for alkalescence, appropriate amount of ethanol.
The production method of described wear-resisting graphene oxide compound melmac, is characterized in that:
(1) polyacrylonitrile is dissolved in dimethyl formamide, is mixed with the solution of 4wt%; Polyoxyethylene being dissolved in dimethylformamide/dichloromethane volume ratio is 1:1 double solvents, be mixed with the solution of 4wt%, again above-mentioned two kinds of solution are mixed, add silicon carbide, beta-silicon nitride nanowire, graphene oxide, stir, add trifluoroethyl methacrylate, tertbutyl peroxide again, be heated to 60-70 DEG C, stirring reaction 1-2 hour, filter, by filter cake ethanol purge 2-3 time, obtain the graphene oxide of modification.
(2) by trimeric cyanamide, 37% formalin mixing, be heated to 70-75 DEG C, stir until all dissolve, add the graphene oxide of the modification that (1) step obtains again, stir 10-20 minute, add alkaline pH value regulator AMP-95, regulate pH value to be 8-9, reaction 3-4 hour, obtains the melmac performed polymer containing graphene oxide;
(3) performed polymer is placed in 30 DEG C of vacuum drying ovens, except being 5-6 by citric acid adjust ph after anhydrating, solidify in 50 DEG C of baking ovens 8-9 hour shaping, obtain graphene oxide/melmac matrix material.
Beneficial effect of the present invention
Resin of the present invention with the addition of graphene oxide, and the resin making resin thermal conductivity not add graphene oxide improves 38%, by adding silicon carbide, beta-silicon nitride nanowire, improves the wear resistance of resin, hardness and thermotolerance; Production technique of the present invention can improve the dispersing uniformity of graphene oxide, improves bonding strength, improves toughness and the anti-bending strength of melmac.
Embodiment
A kind of wear-resisting graphene oxide compound melmac, is made up of the raw material of following weight part (kilogram): silicon carbide 0.1, beta-silicon nitride nanowire 0.2, trimeric cyanamide 23,37% formalin 43, graphene oxide 2, trifluoroethyl methacrylate 0.7-0.9, polyacrylonitrile 0.8, dimethyl formamide are appropriate, polyoxyethylene 0.2, dimethylformamide/dichloromethane volume ratio are that 1:1 double solvents is appropriate, appropriate, the alkaline pH value regulator AMP-95 of tertbutyl peroxide 0.4, citric acid is appropriate, appropriate amount of ethanol.
The production method of described wear-resisting graphene oxide compound melmac, is characterized in that:
(1) polyacrylonitrile is dissolved in dimethyl formamide, is mixed with the solution of 4wt%; Polyoxyethylene being dissolved in dimethylformamide/dichloromethane volume ratio is 1:1 double solvents, be mixed with the solution of 4wt%, again above-mentioned two kinds of solution are mixed, add silicon carbide, beta-silicon nitride nanowire, graphene oxide, stir, add trifluoroethyl methacrylate, tertbutyl peroxide again, be heated to 65 DEG C, stirring reaction 1.5 hours, filter, by filter cake ethanol purge 2 times, obtain the graphene oxide of modification.
(2) by trimeric cyanamide, 37% formalin mixing, be heated to 73 DEG C, stir until all dissolve, add the graphene oxide of the modification that (1) step obtains again, stir 15 minutes, add alkaline pH value regulator AMP-95, regulate pH value to be 8.6, react 3.5 hours, obtain the melmac performed polymer containing graphene oxide;
(3) performed polymer is placed in 30 DEG C of vacuum drying ovens, except being 6 by citric acid adjust ph after anhydrating, solidify in 50 DEG C of baking ovens 8.6 hours shaping, obtain graphene oxide/melmac matrix material.
Experimental data:
The polypropylene of this embodiment is through extrusion moulding, and after tested, thermal conductivity is 0.43W/ (m ﹒ K), flexural strength 103MPa, water-intake rate < 0.1%.
Claims (2)
1. a wear-resisting graphene oxide compound melmac, it is characterized in that being made up of the raw material of following weight part: silicon carbide 0.1-0.2, beta-silicon nitride nanowire 0.2-0.3, trimeric cyanamide 20-25, 37% formalin 40-45, graphene oxide 1.8-2.1, trifluoroethyl methacrylate 0.7-0.9, polyacrylonitrile 0.7-0.9, dimethyl formamide is appropriate, polyoxyethylene 0.2-0.3, dimethylformamide/dichloromethane volume ratio is that 1:1 double solvents is appropriate, tertbutyl peroxide 0.3-0.5, citric acid is appropriate, pH value regulator AMP-95 is appropriate for alkalescence, appropriate amount of ethanol.
2. the production method of wear-resisting graphene oxide compound melmac according to claim 1, is characterized in that:
(1) polyacrylonitrile is dissolved in dimethyl formamide, is mixed with the solution of 4wt%; Polyoxyethylene being dissolved in dimethylformamide/dichloromethane volume ratio is 1:1 double solvents, be mixed with the solution of 4wt%, again above-mentioned two kinds of solution are mixed, add silicon carbide, beta-silicon nitride nanowire, graphene oxide, stir, add trifluoroethyl methacrylate, tertbutyl peroxide again, be heated to 60-70 DEG C, stirring reaction 1-2 hour, filter, by filter cake ethanol purge 2-3 time, obtain the graphene oxide of modification;
(2) by trimeric cyanamide, 37% formalin mixing, be heated to 70-75 DEG C, stir until all dissolve, add the graphene oxide of the modification that (1) step obtains again, stir 10-20 minute, add alkaline pH value regulator AMP-95, regulate pH value to be 8-9, reaction 3-4 hour, obtains the melmac performed polymer containing graphene oxide;
(3) performed polymer is placed in 30 DEG C of vacuum drying ovens, except being 5-6 by citric acid adjust ph after anhydrating, solidify in 50 DEG C of baking ovens 8-9 hour shaping, obtain graphene oxide/melmac matrix material.
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Cited By (3)
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CN105513706A (en) * | 2015-08-23 | 2016-04-20 | 国网山东省电力公司临沂供电公司 | Fiber composite core wire for transmission line |
CN107915956A (en) * | 2017-12-21 | 2018-04-17 | 贺州宝兴新材料有限公司 | A kind of compound melamine resin |
CN107987470A (en) * | 2017-12-20 | 2018-05-04 | 贺州宝兴新材料有限公司 | A kind of production technology of the compound melamine resin of antibacterial graphene oxide |
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CN105513706A (en) * | 2015-08-23 | 2016-04-20 | 国网山东省电力公司临沂供电公司 | Fiber composite core wire for transmission line |
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Application publication date: 20150729 |