Do you know the difference between borosilicate glass and ordinary glass?

Borosilicate heat-resistant glass is a type of "cooked glass", the cost is quite expensive, fully meet the international environmental testing standards. Due to its own heat and anti-instantaneous temperature difference performance requirements, the use of high-boron silicon material to replace the "raw glass" in a large number of lead, zinc and other harmful heavy metal ions, so its brittleness and weight is far less common in life ordinary " But also to ensure that, in the case of instantaneous temperature difference will not burst; its weight, than with a large number of heavy metal ions in the "raw glass" light more; in appearance, it seems with the ordinary glass also has Difference, visually out of the "raw glass" hard, crisp feeling.

1, the composition of raw materials: high borosilicate glass containing boron trioxide and silica in the amount of ordinary glass is higher, even boron content can reach 14%, silicon content of 80%. Ordinary flat glass silicon content of about 70%, ordinary glass is generally not boron, but sometimes up to 1%

2, glass features: Gao Peng glass expansion coefficient is low, softening point high, good resistance to rapid cooling performance. The expansion coefficient of about 32 ~ 33 * 10 (-7), ordinary glass about 80-100 * 10 (-7); resistance to rapid cooling about 200 to 300 degrees Celsius.

3, use: mainly used in the production of glass equipment, glass lid, chemical equipment.