CN112143192B - Carbon-plastic alloy material and preparation method thereof - Google Patents

Carbon-plastic alloy material and preparation method thereof Download PDF

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CN112143192B
CN112143192B CN202011073077.3A CN202011073077A CN112143192B CN 112143192 B CN112143192 B CN 112143192B CN 202011073077 A CN202011073077 A CN 202011073077A CN 112143192 B CN112143192 B CN 112143192B
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罗泽阳
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Shenzhen Fengcai New Material Technology Co ltd
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Abstract

The application discloses a carbon-plastic alloy material and a preparation method thereof. The carbon-plastic alloy material comprises: 8289 parts by weight of unsaturated polyester resin 6.20-6.40 parts; 8955 parts by weight of low-shrinkage resin 3.60-3.80 parts; 0.13-0.17 part by weight of a curing agent; 0.020-0.030 parts by weight of polymerization inhibitor; 0.040-0.060 wt% of coupling agent; 0.300-0.400 parts by weight of graphene; 11.80-12.20 parts by weight of graphite; 7.80-8.20 parts by weight of stone powder; 2.90-3.10 parts by weight of short carbon fibers; and 0.48 to 0.52 parts by weight of a mold release agent. The carbon-plastic alloy material has high heat conductivity, mechanical property, corrosion resistance, plasticity and processability. The preparation method is simple, convenient and quick to operate, does not need harsh conditions such as high temperature and high pressure, and has the advantages of high processing speed, high production efficiency and high molding qualification rate.

Description

Carbon-plastic alloy material and preparation method thereof
Technical Field
The application relates to the field of heat-conducting composite materials, in particular to a carbon-plastic alloy material and a preparation method thereof.
Background
The heat dissipation material is a metal material, especially an aluminum alloy, which is widely used at present, and the heat dissipation mode mainly utilizes a high heat conductivity coefficient to lead out the heat of the heating element and dissipates the heat through the air convection exchange effect. The metal material has the advantages of high mechanical strength, good toughness and good heat-conducting property, but has the fatal defects of high density, easy corrosion, general formability, high energy consumption, unadjustable heat-conducting property and low heat-radiating property, and has the problem of complicated processing process when used for manufacturing a radiator with a complex structure, so that the cost is higher, and the metal material is gradually replaced by a novel heat-conducting polymer material.
The research on the heat-conducting polymer material originates from about 80 years of the foreign 20 th century (related research reports begin at the end of the 20 th century in China), and since 90 years of the 20 th century, the research on the mathematical model for predicting the heat conductivity coefficient of the heat-conducting polymer composite material is established worldwide, so that great progress is made, and the development of the manufacturing technology and application of the heat-conducting polymer material is promoted. The countries such as the united states, germany, japan, etc. start early and develop rapidly, and a plurality of varieties are released to the market, and the aluminum and the alloy thereof commonly used are gradually replaced in a plurality of fields (such as LED, automobile or electronic industry, etc.), but because the aluminum and the alloy thereof are limited to the insufficient high thermal conductivity (currently, the aluminum and the alloy thereof can only be below 5W/m · K internationally, and the cost is very high), the aluminum and the alloy thereof are limited to be applied in some fields with large heat productivity (such as commercial illumination, high-power LED illumination such as outdoor illumination, etc.).
In view of the above, the carbon-plastic alloy has a high thermal conductivity (currently adjustable within 30W/m · K), and an emissivity (which is a ratio of energy radiated by an object at a certain temperature to energy radiated by a black body at the same temperature, wherein the emissivity of the black body is equal to 1, and the emissivity of other objects is between 0 and 1, and the closer to 1, the stronger the emissivity) is, the higher the thermal conductivity is, the higher the emissivity is. The carbon-plastic alloy is a new material obtained by organically combining carbon element heat conduction materials (such as graphene, carbon fibers and the like) with resin/rubber by a physical blending or chemical grafting method. Besides high heat conductivity, the composite material also has the advantages of light weight, corrosion resistance, high stability, easiness in forming, low cost and the like. At present, the heat dissipation performance of a carbon-plastic alloy radiator with the same structure and size can be equivalent to that of aluminum alloy, so that the carbon-plastic alloy radiator can well replace aluminum and aluminum alloy and becomes one of the most active varieties in the plastic industry.
However, the existing carbon-plastic alloy has the problems of poor compatibility and low mechanical strength, and the heat conductivity, the heat emissivity and other heat conductivity performances of the carbon-plastic alloy still have room for improvement.
Disclosure of Invention
[ problem ] to
To the deficiencies that exist in the prior art, one object of the present application is to provide a carbon-plastic alloy material. The carbon-plastic alloy material fully considers the heat-conducting property of the carbon heat-conducting material and the mechanical property of the plastic, so that the carbon-plastic alloy material has good performances in the two aspects, and has higher corrosion resistance, plasticity and processability.
Another object of the present application is to provide a method for preparing the carbon-plastic alloy material, wherein the method is simple, convenient and fast to operate, does not require harsh conditions such as high temperature and high pressure, and has the advantages of fast processing speed, high production efficiency and high molding qualification rate.
[ solution ]
In order to achieve the above object, according to one embodiment of the present application, there is provided a carbon-plastic alloy material including the following components:
Figure BDA0002715771060000021
in this application, adopted graphite, three kinds of carbon element heat conduction materials of graphite, graphite alkene and short carbon fiber, through reasonable collocation and with 8289 type unsaturated polyester resin, 8955 type low shrinkage resin mutually supports for the alloy material is moulded to carbon that makes has both shown excellent heat conductivility, if higher coefficient of heat conductivity, coefficient of heat radiation, has shown excellent mechanical properties again, if higher compressive strength, tensile strength, impact strength etc. still has good corrosion resistance, plasticity and processability etc. in addition.
Preferably, the carbon-plastic alloy material comprises the following components:
Figure BDA0002715771060000022
Figure BDA0002715771060000031
at the above component proportion, the carbon-plastic alloy material prepared by the method can show more excellent thermal conductivity, mechanical strength and corrosion resistance.
Further, the carbon-plastic alloy material further comprises: 0.40-0.46 parts by weight of methylcyclopentenol ketone and 0.86-0.90 parts by weight of citral. Preferably, the carbon-plastic alloy material further comprises: 0.43 parts by weight of methylcyclopentenolone and 0.88 parts by weight of citral. In this application, adopt methyl cyclopentenolone and citral to mutually support, can enough promote the mutual integration of graphite, graphite alkene and short carbon fiber etc. and resin, improve whole mechanical properties, can promote the abundant conduction of heat energy in the material again, promote the heat conductivity of carbon-plastic alloy material.
Further, the curing agent may be tert-butyl peroxybenzoate (TBPB). The curing agent can be used for effectively curing the carbon-plastic alloy material into required properties.
Further, the polymerization inhibitor may be p-benzoquinone (PBQ). The polymerization inhibitor can properly delay the crosslinking and curing rate among resins and provide enough time for processing carbon-plastic alloy materials.
Preferably, the p-benzoquinone can be used after being prepared as a 5 to 15 wt%, preferably 10 wt% styrene solution. The carbon-plastic alloy material is dissolved in styrene for use, so that the benzoquinone is conveniently and fully dispersed in resin, and the polymerization inhibition effect is exerted in a balanced manner, so that the solidification of the carbon-plastic alloy material can be synchronously carried out on all parts, and the mechanical property is fully improved.
Further, the coupling agent may be a silane coupling agent RH 570. The coupling agent can be used for coupling graphite, graphene, chopped carbon fibers and the like with resin, so that the compressive strength, the tensile strength and the like of the carbon-plastic alloy material are further improved.
Further, the particle size of the graphite can be 600-800 meshes, and is preferably 700 meshes. Under the granularity, the graphite can be uniformly dispersed in the carbon-plastic alloy material, and the optimal heat conducting property is exerted.
Further, the particle size of the stone powder can be 500-700 meshes, and is preferably 600 meshes. Under the granularity, the stone powder can effectively reinforce the mechanical property of the carbon-plastic alloy material.
Further, the chopped carbon fibers may have a length of 3 mm. Under the length, the thermal conductivity of the carbon-plastic alloy material can be improved, and the carbon-plastic alloy material has better tensile strength and impact resistance.
Further, the release agent may be zinc stearate. The release agent can avoid the adhesion of the carbon-plastic alloy material and a mold, and is convenient to release and take out after the material is solidified.
According to another embodiment of the present application, there is provided a method for preparing the carbon-plastic alloy material, including the steps of:
(1) preparation of resin paste: mixing and dispersing 8289 type unsaturated polyester resin, 8955 type low-shrinkage resin, a curing agent, a polymerization inhibitor and a coupling agent;
(2) kneading and stirring the powder: mixing graphene, graphite, stone powder and a release agent, kneading and stirring;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), and stirring and kneading the mixture in a clockwise and anticlockwise overlapping manner; and
(4) and (4) clockwise rotating and stirring the product obtained in the step (3), adding the chopped carbon fibers, and then continuing kneading and stirring.
In the application, the carbon-plastic alloy material can be prepared by mixing/kneading and stirring the components in batches by the preparation method without severe conditions such as high temperature and high pressure, and has the advantages of mild condition, easy operation, simplicity, convenience, rapidness, no severe conditions such as high temperature and high pressure, high processing speed, high production efficiency and high molding qualification rate. After the processing is finished, the material is injected into the mold and cured to obtain the product with the required structure.
Further, in the preparation method, 0.40-0.46 part by weight of methylcyclopentenol ketone and 0.86-0.90 part by weight of citral are added in the step (1). Preferably, the preparation method further adds 0.43 parts by weight of methylcyclopentenol ketone and 0.88 parts by weight of citral in step (1). According to the application, the methyl cyclopentenolone and the citral are added, so that the thermal conductivity and the mechanical property of the carbon-plastic alloy material are further improved.
Further, in the step (1), the mixing and dispersing may be carried out at a stirring speed of 900 to 1100 rpm, preferably 1000 rpm, for 12 to 18 minutes, preferably 15 minutes. Under the mixing and dispersing operation conditions, the resin, the curing agent, the polymerization inhibitor, the coupling agent and the like can be sufficiently stirred, mixed and uniformly mixed.
Further, in the step (2), the kneading and stirring may be performed at a stirring speed of 60 to 70 rpm, preferably 65 rpm, for 12 to 18 minutes, preferably 15 minutes. Under the kneading and stirring operation conditions, the respective powders can be sufficiently stirred and mixed into a uniform state.
Further, in the step (3), the mixture is stirred clockwise for 8 to 12 minutes, preferably 10 minutes, at a stirring speed of 80 to 90 revolutions per minute, preferably 85 revolutions per minute, and then stirred counterclockwise for 8 to 12 minutes, preferably 10 minutes. Through clockwise and anticlockwise overlapping stirring, can make resin paste and powder fully contact, avoid appearing the inhomogeneous condition of local mixture.
Further, in the step (4), the chopped carbon fibers are added at a stirring speed of 80-90 rpm, preferably 85 rpm, and then kneaded and stirred for 6-10 minutes, preferably 8 minutes. Through stirring and kneading, the chopped carbon fibers can be fully infiltrated with resin and fully contacted with graphite and graphene, so that the dual functions of heat conduction and reinforcement of the chopped carbon fibers are exerted.
[ advantageous effects ]
In summary, the present application has the following beneficial effects:
the carbon-plastic alloy material according to the application shows higher heat conductivity coefficient, heat radiation coefficient, compressive strength, tensile strength, impact strength and the like, and further has excellent corrosion resistance, plasticity, processability and the like. Therefore, the carbon-plastic alloy material can be used for preparing various heat dissipation materials, such as radiators of electronic components and heating equipment radiators (replacing traditional cast iron radiators), and is light in weight, environment-friendly and pollution-free.
In addition, the preparation method of the carbon-plastic alloy material is simple, convenient and quick to operate, does not need harsh conditions such as high temperature and high pressure, and is high in processing speed, production efficiency and forming qualification rate.
Detailed Description
In order that those skilled in the art can more clearly understand the present application, the present application will be described in further detail with reference to the following examples, but it should be understood that the following examples are only preferred embodiments of the present application, and the scope of the present application as claimed is not limited thereto.
Sources of materials
8289 type unsaturated polyester resin, 8955 type low shrinkage resin, available from Xinshugli resin, Inc.;
tert-butyl peroxybenzoate (TBPB), available from Jiangsu crystallized space New Material science and technology Co., Ltd;
p-benzoquinone (PBQ), available from Shanghai Michelin Biochemical technology, Inc.;
silane coupling agent RH570, available from Kyon chemical Co., Ltd of Shanghai;
graphene, purchased from xiamen kana graphene technology, inc;
graphite, purchased from san graphite science and technology limited, guan city, dong;
stone dust, purchased from Shijiazhuang Xuang mineral products processing Limited;
zinc stearate, available from chemical reagents ltd, wungjiang, guangdong;
short carbon fibers, purchased from Jiangsu Chuangyu carbon fiber technology ltd;
methylcyclopentenolone, available from shanghai yan chemical technology ltd; and
citral, purchased from Foshan dao Qi Biotech Ltd.
< example >
Example 1
The carbon-plastic alloy material according to the application is prepared by adopting the following preparation method:
(1) preparation of resin paste: 6.30kg of 8289 type unsaturated polyester resin, 3.70kg of 8955 type low shrinkage resin, 0.15kg of curing agent tert-butyl peroxybenzoate, 0.025kg of polymerization inhibitor p-benzoquinone (dissolved in 0.225kg of styrene), and 0.050kg of silane coupling agent RH570 were mixed and dispersed for 15 minutes at a stirring speed of 1000 revolutions per minute;
(2) kneading and stirring the powder: 0.350kg of graphene, 12.00kg of graphite (700 mesh), 8.00kg of stone powder (600 mesh) and 0.50kg of zinc stearate as a release agent were mixed and kneaded at a stirring speed of 65 rpm for 15 minutes;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 10 minutes at a stirring speed of 85 revolutions per minute, and then anticlockwise stirring and kneading for 10 minutes; and
(4) the product obtained in step (3) was stirred while rotating clockwise at a stirring speed of 85 rpm, 3.00kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 8 minutes.
Thus, the carbon-plastic alloy material according to the application is prepared.
Example 2
The carbon-plastic alloy material according to the application is prepared by adopting the following preparation method:
(1) preparation of resin paste: 6.20kg of 8289 type unsaturated polyester resin, 3.80kg of 8955 type low shrinkage resin, 0.13kg of curing agent tert-butyl peroxybenzoate, 0.030kg of inhibitor p-benzoquinone (dissolved in 0.120kg of styrene), and 0.040kg of silane coupling agent RH570 were mixed and dispersed for 18 minutes at a stirring speed of 900 rpm;
(2) kneading and stirring the powder: 0.400kg of graphene, 11.80kg of graphite (600 mesh), 8.20kg of stone powder (700 mesh) and 0.48kg of zinc stearate as a release agent were mixed and kneaded at a stirring speed of 60 rpm for 18 minutes;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 8 minutes at a stirring speed of 90 revolutions per minute, and then anticlockwise stirring and kneading for 12 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 80 revolutions per minute, 3.10kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 10 minutes.
Thus, the carbon-plastic alloy material according to the application is prepared.
Example 3
The carbon-plastic alloy material according to the application is prepared by adopting the following preparation method:
(1) preparation of resin paste: 6.40kg of 8289 type unsaturated polyester resin, 3.60kg of 8955 type low shrinkage resin, 0.17kg of curing agent tert-butyl peroxybenzoate, 0.020kg of p-benzoquinone inhibitor (dissolved in 0.280kg of styrene), and 0.060kg of silane coupling agent RH570 were mixed and dispersed for 12 minutes at a stirring speed of 1100 rpm;
(2) kneading and stirring the powder: 0.300kg of graphene, 12.20kg of graphite (800 mesh), 7.80kg of stone powder (500 mesh) and 0.52kg of zinc stearate as a release agent are mixed and kneaded for 12 minutes at a stirring speed of 70 revolutions per minute;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 12 minutes at a stirring speed of 80 revolutions per minute, and then anticlockwise stirring and kneading for 8 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 90 revolutions per minute, 2.90kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 6 minutes.
Thus, the carbon-plastic alloy material according to the application is prepared.
Example 4
A carbon-plastic alloy material according to the present application was prepared in the same manner as in example 1, except that 0.43kg of methylcyclopentenolone and 0.88kg of citral were also added in step (1).
Example 5
The carbon-plastic alloy material according to the application is prepared by adopting the following preparation method:
(1) preparation of resin paste: 6.20kg of 8289 type unsaturated polyester resin, 3.60kg of 8955 type low shrinkage resin, 0.17kg of curing agent tert-butyl peroxybenzoate, 0.020kg of polymerization inhibitor p-benzoquinone (dissolved in 0.200kg of styrene), 0.040kg of silane coupling agent RH570, 0.46kg of methylcyclopentenol ketone and 0.86kg of citral were mixed and dispersed at a stirring speed of 1100 rpm for 12 minutes;
(2) kneading and stirring the powder: 0.300kg of graphene, 12.20kg of graphite (700 mesh), 7.80kg of stone powder (500 mesh) and 0.48kg of zinc stearate as a release agent are mixed and kneaded for 12 minutes at a stirring speed of 65 revolutions per minute;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 8 minutes at a stirring speed of 85 revolutions per minute, and then anticlockwise stirring and kneading for 10 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 90 revolutions per minute, 3.10kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 10 minutes.
Thus, the carbon-plastic alloy material according to the application is prepared.
Example 6
The carbon-plastic alloy material according to the application is prepared by adopting the following preparation method:
(1) preparation of resin paste: 6.40kg of 8289 type unsaturated polyester resin, 3.80kg of 8955 type low shrinkage resin, 0.13kg of curing agent tert-butyl peroxybenzoate, 0.030kg of p-benzoquinone retarder (dissolved in 0.300kg of styrene), 0.060kg of silane coupling agent RH570, 0.40kg of methylcyclopentenol ketone and 0.90kg of citral were mixed and dispersed for 18 minutes at a stirring speed of 900 rpm;
(2) kneading and stirring the powder: 0.400kg of graphene, 11.80kg of graphite (800 meshes), 8.20kg of stone powder (600 meshes) and 0.52kg of zinc stearate as a release agent are mixed and kneaded for 15 minutes at a stirring speed of 60 revolutions per minute;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 10 minutes at a stirring speed of 90 revolutions per minute, and then anticlockwise stirring and kneading for 12 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 85 revolutions per minute, 2.90kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 6 minutes.
Thereby, the carbon-plastic alloy material according to the application is prepared.
Comparative example 1
The carbon-plastic alloy material is prepared by the following preparation method:
(1) preparation of resin paste: 6.60kg of 8289 type unsaturated polyester resin, 3.40kg of 8955 type low shrinkage resin, 0.20kg of curing agent t-butyl peroxybenzoate, 0.017kg of polymerization inhibitor p-benzoquinone (dissolved in 0.170kg of styrene) and 0.065kg of silane coupling agent RH570 were mixed and dispersed for 20 minutes at a stirring speed of 800 rpm;
(2) kneading and stirring the powder: 0.250kg of graphene, 12.50kg of graphite (500 mesh), 7.50kg of stone powder (800 mesh) and 0.55kg of zinc stearate as a release agent were mixed and kneaded at a stirring speed of 50 rpm for 20 minutes;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 5 minutes at a stirring speed of 100 revolutions per minute, and then anticlockwise stirring and kneading for 15 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 70 revolutions per minute, 2.50kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 15 minutes.
Thus, the carbon-plastic alloy material is prepared.
Comparative example 2
The carbon-plastic alloy material is prepared by the following preparation method:
(1) preparation of resin paste: 6.00kg of 8289 type unsaturated polyester resin, 4.00kg of 8955 type low shrinkage resin, 0.10kg of curing agent t-butyl peroxybenzoate, 0.033kg of polymerization inhibitor p-benzoquinone (dissolved in 0.330kg of styrene), and 0.035kg of silane coupling agent RH570 were mixed and dispersed at a stirring speed of 1200 rpm for 10 minutes;
(2) kneading and stirring the powder: 0.450kg of graphene, 11.50kg of graphite (900 mesh), 8.50kg of stone powder (400 mesh) and 0.45kg of zinc stearate as a release agent are mixed and kneaded for 10 minutes at a stirring speed of 80 revolutions per minute;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), clockwise stirring and kneading for 15 minutes at a stirring speed of 70 revolutions per minute, and then anticlockwise stirring and kneading for 5 minutes; and
(4) the resultant of step (3) was stirred while rotating clockwise at a stirring speed of 100 revolutions per minute, 3.50kg of chopped carbon fibers (3 mm in length) were added, followed by kneading and stirring for 5 minutes.
Thus, the carbon-plastic alloy material is prepared.
< test examples >
The carbon-plastic alloy materials obtained in examples 1 to 6 and the carbon-plastic alloy materials obtained in comparative examples 1 and 2 were measured for properties such as thermal conductivity, corrosion resistance, and mechanical strength after curing, and the results are shown in the following table 1:
the salt spray test is carried out for 1000 hours according to the determination mode of a neutral salt spray test in the national standard GB/T10125-2012 salt spray test for artificial atmosphere corrosion test, and then whether surface changes such as cracks, peeling, pitting and the like exist or not is observed.
[ Table 1]
Figure BDA0002715771060000101
As can be seen from table 1, the carbon-plastic alloy materials prepared according to embodiments 1 to 3 of the present application have high thermal conductivity, thermal emissivity, breakdown voltage, compressive strength, tensile strength, impact strength, and good salt spray resistance, thereby exhibiting excellent thermal conductivity, mechanical strength, corrosion resistance, and the like; in addition, the carbon-plastic alloy materials prepared according to embodiments 4 to 6 of the present application show further improved thermal conductivity, mechanical strength, corrosion resistance and the like due to the addition of methylcyclopentadienyl alcohol ketone and citral.
In contrast, comparative examples 1 and 2 are significantly lower in properties such as thermal conductivity, mechanical strength and corrosion resistance as a whole than those of the present application due to the use of the component distribution ratio and the production conditions outside the range defined in the present application.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The carbon-plastic alloy material is characterized by comprising the following components:
8289 parts by weight of unsaturated polyester resin 6.20-6.40 parts;
3.60-3.80 parts by weight of 8955 type low-shrinkage resin;
0.13-0.17 part by weight of a curing agent;
0.020-0.030 parts by weight of polymerization inhibitor;
0.040-0.060 wt% of coupling agent;
0.300-0.400 parts by weight of graphene;
11.80-12.20 parts by weight of graphite;
7.80-8.20 parts by weight of stone powder;
2.90-3.10 parts by weight of short carbon fibers; and
0.48-0.52 parts by weight of a release agent;
also comprises 0.40-0.46 weight part of methylcyclopentadienolone and 0.86-0.90 weight part of citral.
2. The carbon-plastic alloy material according to claim 1, comprising the following components:
8289 part by weight of unsaturated polyester resin;
8955 type low shrinkage resin 3.70 weight parts;
0.15 part by weight of curing agent;
0.025 parts by weight of polymerization inhibitor;
0.050 parts by weight of a coupling agent;
0.350 part by weight of graphene;
12.00 parts of graphite;
8.00 parts of stone powder;
3.00 parts by weight of short carbon fibers; and
0.50 part by weight of a release agent;
also comprises 0.40-0.46 weight part of methylcyclopentadienolone and 0.86-0.90 weight part of citral.
3. The carbon-plastic alloy material according to claim 1 or 2,
the curing agent is tert-butyl peroxybenzoate;
the polymerization inhibitor is p-benzoquinone;
the coupling agent is a silane coupling agent KH 570;
the release agent is zinc stearate.
4. The carbon-plastic alloy material according to claim 3, wherein the p-benzoquinone is used after being prepared into a 5-15 wt% styrene solution.
5. The carbon-plastic alloy material according to claim 1 or 2,
the granularity of the graphite is 600-800 meshes;
the particle size of the stone powder is 500-700 meshes.
6. The carbon-plastic alloy material according to claim 1 or 2, wherein the chopped carbon fibers have a length of 3 mm.
7. A method for preparing the carbon-plastic alloy material according to any one of claims 1 to 6, which is characterized by comprising the following steps of:
(1) preparation of resin paste: mixing and dispersing 8289 type unsaturated polyester resin, 8955 type low-shrinkage resin, a curing agent, a polymerization inhibitor, a coupling agent, methyl cyclopentenolone and citral;
(2) kneading and stirring the powder: mixing graphene, graphite, stone powder and a release agent, kneading and stirring;
(3) adding the resin paste prepared in the step (1) into the kneaded powder obtained in the step (2), and stirring and kneading the mixture in a clockwise and anticlockwise overlapping manner; and
(4) and (4) clockwise rotating and stirring the product obtained in the step (3), adding the chopped carbon fibers, and then continuing kneading and stirring.
8. The production method according to claim 7,
in the step (1), the mixing and dispersing are carried out for 12-18 minutes at a stirring speed of 900-1100 r/min;
in the step (2), the kneading and stirring are carried out at a stirring speed of 60-70 r/min for 12-18 min;
the step (3) is that the mixture is stirred clockwise for 8-12 minutes at a stirring speed of 80-90 revolutions per minute and then is stirred anticlockwise for 8-12 minutes;
and the step (4) is to add the chopped carbon fibers at a stirring speed of 80-90 revolutions per minute, and then kneading and stirring for 6-10 minutes.
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TWI405802B (en) * 2010-06-24 2013-08-21 Nat Univ Tsing Hua Method for fabrication of functionalized graphene reinforced composite conducting plate
CN105086361A (en) * 2015-04-29 2015-11-25 宁波职业技术学院 Graphene modified carbon fiber resin material
CN105504695B (en) * 2016-02-01 2018-08-28 四川远鸣科技有限公司 A kind of corrosion-resistant vinyl ester resin SMC sheet shape moulding compound of high-strength and high-modulus and preparation method thereof
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