High-performance glass fiber impregnating agent

Abstract

The invention discloses a high-performance glass fiber impregnating agent. The high-performance glass fiber impregnating agent is prepared from, by weight, 30-40 parts of epoxy dicyclopentadiene epoxy resin, 20-30 parts of cyclopentanediol, 10-20 parts of trimethylolethane, 5-10 parts of polyvinyl acetate, 5-8 parts of castor oil, 3-5 parts of a coupling agent, 0.5-2 parts of a lubricant, 0.5-1 part of an antiseptic, 0.5-1 part of a pH regulator, 0-0.5 parts of an antistatic agent, 0.5-1 part of a compatilizer, and a proper amount of water. Epoxy dicyclopentadiene epoxy resin, cyclopentanediol, trimethylolethane and polyvinyl acetate are adopted as a film forming agent, so the impregnating agent has excellent high temperature resistance and excellent electric performances, can tolerate the temperature reaching 300 DEG C or above, has high stiffness, high toughness, high tensile strength, high bending strength, high adhesion stress, good film forming property and good protection property, is in favor of realizing protection and bundling of glass fibers in the high speed injecting and rolling process, increases the production efficiency, improves the mechanical performances of the glass fibers, and makes the glass fibers have good cutting property, dispersibility, lubricity, antistatic property, weaving property and fluidity.

Description

technical field [0001] The invention relates to glass fiber production technology, in particular to a high-performance glass fiber sizing agent. Background technique [0002] Disperse glass fiber in water or water alcohol or ester solution medium, and then be used to produce glass fiber insulation packaging materials, glass fiber mat, especially glass fiber mixed with polymer resin fiber to make high-strength glass such as glass fiber reinforced resin Fiber composite material is an important field of modern glass fiber application, and has broad market prospects and development prospects. [0003] Most of the currently commonly used water-dispersible glass fiber sizings use a single compound of amines or alcohols or a mixture of nonionic or cationic surfactants as a dispersant. Its shortcomings are: it is difficult to adjust according to the actual situation of industrial production, and it cannot meet the actual needs of dispersing various glass fibers of different types a...

AI Technical Summary

Problems solved by technology

Its shortcomings are: it is difficult to adjust according to the actual situation of industrial production, and it cannot meet the actual needs of dispersing various glass fibers of different types and chemical compositions or different dispersion media of glass fibers

[0004]In the past, most of the sizing agents in the field of glass fiber used urea as a humectant, which has poor thermal stability and is prone to odor at high temperatures, which seriously affects the use of glass fiber , and it is easy to cause environmental pollution. The application number is CN201010252613.6, which discloses a glass fiber lubricant, a dispersant composed of two different nitrogen-containing surfactants, composed of one or more polyhydric or carbonyl alcohols, esters, Protective agent composed of acyl polymer, moisturizing agent composed of polyol mixture, lubricant, silane coupling agent commonly used in glass fiber industry, and the rest is distilled water or deionized water. This wetting agent is suitable for various alkali-free, Dispersion of medium-alkali glass fiber in water medium, the glass fiber treated by this product has good dispersion performance, good thermal stability and no pollution, but this kind of sizing agent has poor wettability, poor reinforcing effect, and high production cost