Heat-resisting glass (Heat – resistant glass) refers to contain Heat resistance strong boric acid, silicic acid composition, to withstand a sharp temperature change of glass. Coefficient of thermal expansion (because of temperature increase in vitreous expansion ratio) are small, with the rapid change of temperature is not easy to break down. With low expansion, thermal shock resistance, high temperature resistance, corrosion resistance, high strength a series of good performance. Its raw material price is higher than common glass is high, the manufacturing cost is higher, therefore heat-resisting glass sales than common glass, toughened glass high. Heat-resisting glass material use high safety coefficient, it never happens similar of toughened glass spontaneous detonation phenomenon; Thermal expansion coefficient is small, the resistance to a sharp change of temperature range was 120 ℃), the highest heat up to 400 ℃. Heat-resisting glass more for the vessels, bottle, the experimental beaker, etc.
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