Polyurethane elastomer, dicyclopentadiene cyanate ester resin modifier and method for preparing the same

A technology of dicyclopentadiene cyanate and polyurethane elastomer, which is applied in the field of polyurethane elastomer and dicyclopentadiene cyanate resin modification and preparation, and can solve the problem of reducing thermal performance, dielectric performance or processing Performance and other issues, to achieve the effect of excellent dielectric properties, simple operation process and wide applicability

Inactive Publication Date: 2006-07-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few studies on the toughening modification of dicyclopentadiene-type cyanate resin. If the existing toughening system is used for dicyclopen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] By weight, melt copolymerize 10 parts of liquid polyether type and 10 parts of dicyclopentadiene type cyanate at 120°C for 3 hours; then add 90 parts of dicyclopentadiene type cyanate and mix it evenly to obtain polyurethane elastic Body and dicyclopentadiene type cyanate resin modified body.

Embodiment 2

[0012] By weight, melt copolymerize 40 parts of liquid polyether type and 40 parts of dicyclopentadiene type cyanate at 50°C for 3 hours; then add 100 parts of dicyclopentadiene type cyanate and mix it evenly to obtain polyurethane elastic Body / dicyclopentadiene type cyanate resin modified body.

Embodiment 3

[0014] By weight, melt copolymerize 1 part of liquid polyether type and 1 part of dicyclopentadiene type cyanate at 180 ° C for 1 hour; then add 1 part of dicyclopentadiene type cyanate and mix it evenly to obtain polyurethane Elastomer and dicyclopentadiene type cyanate resin modification.

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PUM

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Abstract

The disclosed modified cyanate resin is fused and copolymerized by the dicyclopentadiene cyanate resin of 2-140 weight shares and 1-40 polyurethane elastomer, has high ductility and strength and super dielectric property, and thermostable and heat-wet proof for wide application. The fractional fusion and copolymerization method has no pollution and wide application.

Description

technical field [0001] The invention relates to a modified body of polyurethane elastomer and dicyclopentadiene type cyanate resin and a preparation method. Background technique [0002] Cyanate resin has excellent dielectric properties, high heat resistance, good comprehensive mechanical properties and extremely low water absorption. It is a functional material and structural material with great potential in the aviation field since the 20th century. Cyanate resin has a variety of structures, among which dicyclopentadiene type cyanate resin has better mechanical, thermal and dielectric properties than commonly used bisphenol A type cyanate resin due to its unique molecular structure. performance. However, like other types of cyanate resin, the cured product of dicyclopentadiene type cyanate resin is brittle, and it has important practical value only after toughening and modification. At present, the toughening modification of cyanate is concentrated on bisphenol A cyanate...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G18/48C08G18/42
Inventor 顾媛娟梁国正王结良赵雯张增平王金合
Owner ZHEJIANG UNIV
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