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What is the difference between glass fiber cloth and glass material?

Glass fiber cloth and glass main material is not very different, mainly due to the production of different material requirements, so there are some differences in formula. The content of silica in flat glass is about 70 - 75%, and the content of silica in glass fiber is more than 60%.
Glass is a high temperature melting of inorganic materials (more than 800 degrees, daily-use glass is usually melting at 1100 degrees) No chemical changes will occur until the softening point is below the temperature. Softening point, above the temperature, is only soft, melting or decomposition, will not appear burning phenomenon.
Glass fiber cloth is made of glass into very fine glass fiber, at this time the glass fiber has very good flexibility. The glass fiber is woven into yarn and then woven into a glass fabric. As the glass fiber is very fine, the unit quality surface is large, so the temperature resistance has declined. Just as a candle can melt a thin copper wire.
But glass doesn't burn. The combustion we can see is in fact to improve the performance of glass fiber cloth, and the resin material or attached impurities on the surface of the glass fiber cloth. Pure glass fiber cloth or coated with some high-temperature coating, it is possible to produce fire-resistant clothing, fire gloves, fire blankets products. However, if you contact the skin directly, the fibers are more sensitive to the skin and itch.

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