Preparation method of GO/IIR high-thermal-conductive composite material

Abstract

The invention belongs to the technical field of rubber preparation, and relates to a preparation method of a graphene oxide (GO) / isobutylene-isoprene rubber (IIR) high-thermal-conductive composite material. According to the method provided by the invention, dry ice is introduced into a graphene oxide / isobutylene-isoprene rubber latex (IIRL) mixed solution based on the easy sublimation characteristic of the dry ice, the volume of the dry ice in case of heat can be instantly expanded by 600-800 times, bubble expansion bursting generates great energy and is similar to micro explosion, explosion shock waves make a molecular chain of rubber broken to reduce viscosity of the rubber, so that dispersion of a nano filler is facilitated; sublimation of the dry ice absorbs a large amount of heat, sothat the rubber molecular chain is quenched, the rigidity is increased, the shearing force of a rotor is more effectively transmitted into the rubber, a graphene oxide aggregate is broken to drive dispersion of the GO, the contact area of the GO and rubber hydrocarbons in IIRL is increased, and the thermal conductivity of the GO / IIR composite material is improved; and the process is simple and controllable, the principle is scientific and reasonable, the energy consumption and production costs are low, the operability is strong, and the use environment is friendly.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of rubber preparation, and specifically relates to a method for preparing GO / IIR high thermal conductivity composite material, using graphene oxide (GO) dispersion liquid and butyl latex (IIRL) as raw materials, and adopting a dry ice expansion pre-dispersion flocculation method to prepare GO / IIR composites. [0003] Background technique: [0004] With the rapid development of high-tech fields such as aviation, spaceflight, and electronics, more and more attention has been paid to the thermal conductivity of rubber. For example, the rubber seals of high-performance electronic products must not only have excellent thermal conductivity and insulation properties, but also have moisture-proof, dust-proof and shock-absorbing properties; fields such as chemical industry production and wastewater treatment require heat exchanger rubber gaskets to have good performance. Thermal conductivity, high temperatur...

AI Technical Summary

Problems solved by technology

[0006] Butyl rubber is a kind of synthetic rubber, which is synthesized from isobutylene and a small amount of isoprene. Butyl rubber has good air tightness, heat resistance, ozone resistance, aging resistance, chemical resistance, shock absorption and electrical insulation Performance, good resistance to sunlight and ozone, can be exposed to animal or vegetable oils or oxidizable chemicals, generally used in the production of car tires and car sound insulation products, in the field of building waterproofing, butyl rubber is environmentally friendly The title of butyl rubber has been fully popularized to replace asphalt, and occupies an important position in the rubber industry. However, the structural characteristics of butyl rubber make it slow in vulcanization, poor in mutual adhesion, poor in compatibility with other rubbers, and weak in interaction with reinforcing agents. , these shortcomings restrict the processing and application of butyl rubber, and it is particularly important to improve the performance of butyl rubber

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