It is made of pyrophyllite, quartz sand, limestone, dolomite, xonotlite and magnesite through high temperature melting, drawing, winding and weaving. The diameter of its monofilament ranges from several microns to more than twenty microns, which is equivalent to 1/20- 1/5 of a hair filament, and each bundle of fiber precursors consists of hundreds or even hundreds.
Extended data:
Glass fiber characteristics
1. melting point: glass is amorphous. It has no fixed melting point, and its softening point is generally considered to be 500~750℃.
2. Boiling point: 1000℃
3. Density: 2.4 ~ 2.76 g/cm3
When glass fiber is used as a reinforcing material of reinforced plastics, its biggest feature is its high tensile strength. The tensile strength is 6.3 ~ 6.9g/d in standard state and 5.4 ~ 5.8g/d in wet state. The density is 2.54 g/cm3.
Good heat resistance, and the strength will not be affected when the temperature reaches 300℃. It has excellent electrical insulation, is an advanced electrical insulation material, and is also used as thermal insulation material and fire shielding material. Generally only corroded by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid.
References:
Baidu encyclopedia-glass fiber