Preparation method of bicontinuous-phase alumina/epoxy resin composite material

A technology of epoxy resin and phase alumina, applied in ceramic products, applications, household appliances, etc., can solve the problem of low thermal conductivity, and achieve the effects of simple preparation process, improved high and low temperature mechanical properties, and easy operation.
CN106633652AInactive Publication Date: 2017-05-10STATE GRID CORP OF CHINA +2
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2017-05-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a preparation method of a bicontinuous-phase alumina / epoxy resin composite material, belonging to the technical field of composite materials. The method comprises the following steps: carrying out compression molding on Al2O3 powder with different particle sizes under different pressures, and sintering at different temperatures under normal pressure for holding time to obtain the porous Al2O3 ceramic with adjustable porosity and pore size; and after carrying out surface modification, standing the preheated porous Al2O3 ceramic in a mixed solution composed of an epoxy resin, an accelerator and a curing agent for some time, and carrying out solidifying formation to obtain the bicontinuous-phase alumina / epoxy resin composite material. The porosity of the porous alumina ceramic is regulated by controlling the content of the foaming agent and the volume density of the green compact, thereby regulating the volume percent of the alumina reinforcement phase in the composite material. The alumina phase in the composite material is a continuous phase, can greatly enhance the high / low-temperature mechanical properties, thermal conductivity and high-temperature creep resistance of the alumina / epoxy composite material, and provides a new idea for researching and developing high-performance epoxy resin composite materials.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] Technical field:

[0002] The invention relates to the field of polymer composite materials, in particular to a preparation method of a bicontinuous-phase alumina / epoxy resin composite material.

[0003] Background technique:

[0004] Doping SiO into epoxy resin matrix 2 、Al 2 o 3 , CaCO 3 , carbon fiber, carbon nanotube, graphene and other inorganic nano / micro particles can effectively improve the mechanical properties such as Young's modulus, tensile strength and fracture toughness of the material, and can also improve the heat resistance and thermal conductivity of the epoxy resin material , And electrical properties such as dielectric constant.

[0005] As an epoxy resin composite material for gas insulated switchgear (GIS), because it is filled with a certain pressure of SF 6 Gas, the inorganic particles required to be added can effectively resist SF 6 Toxic gas from gas decomposition. al 2 o 3 Particle resistant to SF 6 Gas corrosion, also has the advanta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More