The difference between borosilicate glass and ordinary glass

  1. Characteristics of borosilicate glass: Borosilicate glass has a very low coefficient of thermal expansion, which is about one-third that of ordinary glass. This will reduce the effects of temperature gradient stress and thus have stronger fracture resistance, which makes it a necessary material for telescopes and mirrors due to its very small shape deviation. It can also be used to treat highly radioactive nuclear waste, and borosilicate glass begins to soften at about 821 ° C, at which temperature the 7740 viscosity borosilicate is 107.6 yoke.

  2. Borosilicate glass is lower than ordinary glass: Although more and more resistance is thermal shock than other types of glass, borosilicate glass can still be broken due to rapid or uneven temperature changes. When broken, the borosilicate glass cracks tend to be larger rather than pulverized. Borosilicate glass has a low dispersion (about 65 Abbe number crown glasses) and a relatively low refractive index (the entire visible range is 1.51-1.54).

     

  3. High borosilicate glass is used for reflective heat-resistant lamp cups of halogen lamps and electrical equipments that must use heat-resistant glass, such as glass turntables for microwave ovens, microwave lampshades, stage lighting reflector cups, drum washing machine observation windows, heat-resistant teapot cups, Solar collector tubes, etc. The borosilicate glass has a coefficient of linear expansion of 3.3 ± 0.1 * 10 -6 / K and is a glass based on sodium oxide (Na 2 O), boron oxide (B 2 O 2 ), and silica (SIO 2 ). The glass component has a high content of borosilicate, which is boron: 12.5 to 13.5%, and silicon: 78 to 80%, so that the glass is called borosilicate glass. PYREX glass belonging to borosilicate glass is resistant to acid, alkali and water, has excellent corrosion resistance, good thermal stability, chemical stability and electrical properties, so it has chemical corrosion resistance, thermal shock resistance and good mechanical properties. , withstand high temperature and other characteristics.

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Email: amanda@biocryocontainer.com

Phone/WhatsApp: +8618937399428


Sales Manager: Andy Du

Email: andy@biocryocontainer.com

Phone/WhatsApp: +8617656208428


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