Melting point: glass is a kind of amorphous and has no fixed melting point. It is generally considered that its softening point is 500~750℃
Boiling point: about 1000 ℃
Density: 2.4~2.76 g/cm3
When glass fiber is used as a reinforcing material for reinforced plastics, the biggest feature is its high tensile strength. The tensile strength is 6.3 to 6.9 g/d in the standard state, and 5.4 to 5.8 g/d in the wet state. Good heat resistance, no effect on strength when the temperature reaches 300℃. It has excellent electrical insulation and is a high-level electrical insulation material. It is also used as a heat-insulating material and fire-resistant shielding material. Generally only corroded by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid.
