Corona-resistant polyimide based composite material and preparation method thereof

A polyimide-based, composite material technology, applied in the field of insulating materials, can solve the problems of reduced mechanical properties of composite materials, reduced uniformity of film corona resistance, and reduced corona resistance performance
CN108752584AActive Publication Date: 2018-11-06CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
5 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2018-11-06

Smart Images

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

Abstract

The invention provides a corona-resistant polyimide based composite material and a preparation method thereof. The preparation method provided by the invention comprises the steps that an anionic two-dimensional layered material and an organic intercalation agent are subjected to heating reaction in a solvent; then, the mixture and polyimide polymerization monomers are subjected to in-situ polymerization reaction in the solvent; a mixed solution I is obtained; inorganic nanoparticles and the polyimide polymerization monomers are subjected to in-situ polymerization reaction in the solvent; a mixed solution II is obtained; then, the solution I and the solution II are mixed; heat treatment is performed to obtain the polyimide based composite material. The composite material prepared by the preparation method provided by the invention can improve the polyimide corona-resistant performance and also obtains higher mechanical property and excellent temperature resistant performance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of insulating materials, in particular to a corona-resistant polyimide-based composite material and a preparation method thereof. Background technique

[0002] Corona-resistant film is a functional film material used for motor insulation. This film material is widely used in the turn-to-turn insulation and main insulation of high-power variable-frequency motors such as motor vehicle traction motors, wind power generators, high-frequency and high-voltage motors, and Extra-large coil outer insulation and corona-resistant protective layer, wind power generation cables, petroleum motor cables and other fields.

[0003] Corona-resistant film materials in the prior art are mainly polyimide film composite materials, and this composite material mainly improves the corona-resistant performance of the film by adding corona-resistant fillers to polyimide. At present, the main application in the market is Kapton CR, a ...

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