Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyimide semi-interpenetrating network resin and its prepn. method

A technology of semi-interpenetrating network and polyimide, which is applied in the field of engineering plastics, polyimide semi-interpenetrating network resin and its preparation, can solve the problem of high service temperature, achieve wide application fields, high mechanical properties, high The effect of heat resistance

Active Publication Date: 2009-04-29
CHANGCHUN HIPOLYKING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermoplastic polyimide is easy to process and has outstanding comprehensive performance; thermosetting polyimide has a high service temperature but is brittle

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyimide semi-interpenetrating network resin and its prepn. method
  • Polyimide semi-interpenetrating network resin and its prepn. method
  • Polyimide semi-interpenetrating network resin and its prepn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix 70g of thermoplastic polyimide powder, 30g of bismaleimide powder and 10g of graphite in a high-speed mixer for 2 minutes, and put the resulting mixture that can form a semi-interpenetrating network (hereinafter referred to as the mixture) into the mold. Molding at 380°C and 20Mpa to obtain a plate with a thickness of 5mm.

Embodiment 2

[0022] A solution of 70g of thermoplastic polyimide in 600ml of cresol was mixed with 30g of bismaleimide powder and 10g of carbon fiber at 120°C for 30min, poured into 2000ml of ethanol, and the resulting precipitate was washed 3 times with cold ethanol, 70 ℃ vacuum drying to obtain the mixture.

Embodiment 3

[0024] 30 g of bismaleimide is melted in a constant temperature bath of 150° C., 30 g of thermoplastic polyimide and 5 g of polytetrafluoroethylene powder are added under stirring, and then stirred for 2 minutes, cooled and pulverized to obtain a mixture.

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

PUM

No PUM Login to View More

Abstract

The invention belongs to the domain of the polymers technology and is the polyimide half interpenetrating networks pitch and the producing process. With the method of the dry mixing, the wet mixing or the melt mixing, the tri-benzene bis ether polyimide with thermal plasticity is combined with the thermoset bi-smaleimide, then the half interpenetrating networks is formed by the hot pressing. The dosage of the tri-benzene bis ether polyimide is 5-90 percentage and 10-70 percentage optimally. The mixed pitch can be shared with other filler material such as the fraphite, the supramoly, the silicon dioxide, the titanium dioxide, the polyetrafluoroethylene, the carbon fiber and the fibergals in order to improve the ability of the engineering plastic and to satisfy the consumer. Using the high tenacity of the tri-benzene bis ether polyimide with thermal plasticity to reinforce the rigid cross linked structure of the bismaleimide, we can gain the half interpenetrating of the high tenacity and the intension; the material requirement of the different capability needed by a vatiety of purpose can be satisfied by the different mixing methods.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and relates to an engineering plastic, specifically a polyimide semi-interpenetrating network resin and a preparation method thereof. Background technique [0002] Polyimide is currently the highest temperature engineering plastic, which can be divided into two types: thermosetting and thermoplastic. Thermoplastic polyimide is easy to process and has outstanding comprehensive performance; thermosetting polyimide has a high service temperature, but it is brittle. Combining thermoplastic polyimide and thermosetting polyimide can make up for the shortcomings and obtain engineering plastics with comprehensive performance. Summary of the invention [0003] The invention uses thermoplastic triphenyldiether polyimide and thermosetting bismaleimide as raw materials, and combines them through dry mixing, wet mixing or melting mixing, and aims to provide a polyimide semi-interpenetrating Network resi...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10C08L79/08C08K7/14C08L27/18C08K3/30
Inventor 薛大伟耿丽周建杰丁孟贤
Owner CHANGCHUN HIPOLYKING