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Views: 1 Author: Site Editor Publish Time: 2021-07-15 Origin: Site
New glass fiber products
At present, glass fiber products can be divided into four categories: glass fiber reinforced materials for reinforced thermosetting plastics, glass fiber for reinforced thermoplastic plastics, textile glass fiber products for electrical insulation and other purposes, and glass fiber for roof waterproof materials. Among them, glass fiber reinforced materials account for about 70% ~ 75%, and glass fiber textile materials account for about 25% ~ 30%.
There are more than 3000 kinds of glass fiber and more than 50000 specifications abroad. In recent years, the average annual growth of more than 1000 specifications. Foreign experts believe that such a variety development speed can not meet the market demand to the maximum extent, and can only be regarded as the "starting point" of development. It should be said that up to now, glass fiber is still mainly made of alkali free glass, i.e. E glass. Boron containing medium alkali glass (C glass) is only used in the production of acid resistant medium alkali glass fiber products abroad. Due to the weakness of traditional E-glass in performance and composition (such as poor chemical corrosion resistance and environmental pollution caused by some components in glass), some new glass components have appeared and been put into production in recent 10 years. ECR glass is actually modified E glass. Its composition does not contain B2O3, and it has strong acid resistance, water resistance, stress corrosion resistance and short-term alkaline resistance. This kind of ECR glass fiber has been widely used in the production of corrosion-resistant and stress corrosion-resistant FRP pipes and cans.
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