What Is Heat-Resistant Glass?
Heat-resistant glass refers to special glass that can withstand the change in temperature difference between hot and cold fusion. It has a series of excellent properties such as low expansion, thermal shock resistance, heat resistance, corrosion resistance and high strength. Wait.
- Heat-resistant glass (referred to as containing heat-resistant boric acid and silicic acid components, capable of withstanding the temperature difference between hot and cold fusion
- According to data from Japan and the United States, the difference in thermal conductivity between various types of heat-resistant glass is relatively small. For the same material, the thermal conductivity of opaque heat-resistant glass is 1% lower than that of transparent heat-resistant glass. Thermal conductivity is a function of temperature. High thermal conductivity. Below 0 ° C, the thermal conductivity of heat-resistant glass [1J / (ms ° C) = 0.0124W / (mK), hereinafter the same] is 1.33J / (ms ° C) at 100 ° C Formula 1.53J / (ms ° C).
- The thermal conductivity of 1200 heat-resistant glass under various temperature ranges is shown in the table below:
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- The main uses are as follows:
- Use at high temperature (oven, hot water disinfection, etc.)
- Heat-resistant glass can be used for microwave oven heating, high-temperature oven, hot water disinfection equipment, and also can be used for refrigerators, dishwashers and other household appliances.
- Use of medical ampoules
- Heat-resistant glass is generally glass that works in high temperature environments, and its use and installation require special attention.
- Difference from tempered glass
- Among many heat-resistant glass fiber products, heat-resistant coated glass fiber products have been continuously developed. Compared with uncoated products, glass fiber products coated with heat-resistant inorganic materials have greatly improved heat resistance, and have superior properties such as high temperature resistance and fire resistance. Vermiculite-coated glass fiber products, as a member of heat-resistant coating products, have developed rapidly in the past 20 years. This coated glass fiber product has excellent thermal insulation and flame retardancy. Compared with high-temperature-resistant fiber products such as ceramic fiber products and high-silica glass fiber products, the production process of this coating product is relatively simple and cheap, so it has attracted much attention and its application field has been expanding. In foreign countries, the vermiculite-coated heat-resistant glass fiber products have a wide variety and are becoming increasingly mature, such as the series products of the American company OBS under the trade name VEXTRA. These heat-resistant glass fiber products are widely used in welding protection, furnace curtains, pipe banding, expansion joints, heat shields, machine protection, and exhaust branch pipe banding [1] .