Polymer composite material and preparation method thereof
A technology of composite materials and polymers, which is applied in the field of carbon nanomaterials modified polymer composites, can solve the problems of poor balance between thermal conductivity and mechanical properties of polymer composites, difficulty in obtaining comprehensive performance, and limited application range of composite materials. Achieve the effect of improving mechanical properties, high thermal conductivity, thermal conductivity and mechanical properties
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[0044] The embodiment of the present invention also provides a preparation method of a polymer composite material, please refer to figure 2 , including:
[0045] Step S1: adding graphene and carbon nanotubes into the first solution containing a dispersant to obtain a second solution.
[0046] In some embodiments, when configuring the above-mentioned first solution containing a dispersant, the solvent can be selected from at least one of water, ethanol, isopropanol, N-methylpyrrolidone, carbon tetrachloride and ethyl acetate, and the dispersant At least one of polyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, sodium dodecylbenzenesulfonate, fatty acid glycerides, polyethylene glycol p-isooctylphenyl ether and carboxymethyl cellulose can be selected .
[0047] In order to enable the first solution to have a better dispersion effect, the fully stripped graphene and the fully stripped carbon nanotubes can be uniformly dispersed and suspended in the first solution, a...
Embodiment 1
[0069] A kind of preparation method of polymer composite material, as follows:
[0070] 10 parts by mass of polyvinylpyrrolidone was added to 100000 parts by mass of water to obtain a first solution, and 100 parts by mass of graphene and 5 parts by mass of carbon nanotubes were added to the first solution to obtain a second solution.
[0071] Carry out liquid phase shearing to the second solution, that is, carry out high-speed homogeneous stirring treatment on the second solution for 30 minutes, and then use a pin-type sand mill to sand the second solution for 2 hours, so that both high-pressure homogeneous stirring and sand grinding The ratio of the sum of consumed energy to the mass of the second solution is 0.5kWh / kg to obtain a third solution, in which graphene and carbon nanotubes are fully stripped and uniformly dispersed to form a three-dimensional heat conduction network chain structure.
[0072] The third solution is placed in a microwave reactor, and the third soluti...
Embodiment 2
[0075] A kind of preparation method of polymer composite material, as follows:
[0076] 12 parts by mass of polyethylene glycol were added to 468 parts by mass of water to obtain a first solution, and 20 parts by mass of graphene and 100 parts by mass of carbon nanotubes were added to the first solution to obtain a second solution.
[0077] Liquid-phase shearing of the second solution, that is, ultrasonic crushing of the second solution for 10 hours, and then micro-jet homogenization and circular shearing of the second solution for 4 hours, so that the sum of the energy consumed by ultrasonic crushing and micro-jet homogenization , and the mass ratio of the second solution is 100kWh / kg to obtain the third solution, in which the graphene and carbon nanotubes are fully stripped and uniformly dispersed to form a three-dimensional heat conduction network chain structure.
[0078] The third solution is placed in a microwave reactor, and the third solution is subjected to high-tempe...
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