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

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...

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 dicyclopentadiene-type cyanate resin, it may reduce its original toughness while toughening. thermal properties, dielectric properties or processing properties