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What is the difference between the material of fiberglass woven roving and glass?

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What is the difference between the material of fiberglass woven roving and glass?


June 23,2022


The main material of glass fiber woven roving and glass is not very different, mainly due to the different material requirements during production, so there are some differences in the formula. The silica content of flat glass is about 70-75%, and the silica content of glass fiber is generally below 60%.



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Glass is an inorganic material melted at high temperature (above 800 degrees, daily glass is generally melted at 1100 degrees), and no chemical changes will occur below the softening point temperature. Above the softening point temperature, it will only soften, melt or decompose, and will not burn.



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Fiberglass woven roving is made by drawing glass into very fine glass filaments, and the glass filaments at this time have good flexibility. The glass fiber is spun into yarn, and then woven into glass fiber woven roving through a loom. Because the glass filament is extremely thin and the surface area per unit mass is extremely large, the temperature resistance performance is reduced. It's like melting a thin copper wire with a candle.



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But glass doesn't burn. The burning we can see is actually the resin material coated on the surface of the glass fiber cloth, or the attached impurities to improve the performance of the glass fiber cloth. After pure glass fiber cloth or some high temperature resistant coatings, it can be used to make products such as refractory clothing, refractory gloves, and refractory blankets. However, if it is in direct contact with the skin, the broken fibers will irritate the skin to a certain extent and it will itch.


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