What is the difference between ordinary glass and borosilicate glass? Heat-resistant high borosilicate glass is based on ordinary glass, adding 12.5 ~ 13.5% boron, adding glaze sodium silicate sand, soda water and lime in the manufacturing process, the strain temperature can reach 520 ° c, the strength is also higher. A Lower Coefficient of thermal expansion, (3.3 + 0.1) x 10-6 K, is about a third the size of normal glass, which is how 3.3-high borosilicate glasses are called. It is also the best borosilicate glass.glassware , kitchenwere, double wall coffee mug, food containers.
English: borosilicate glass is more heat-resistant, can withstand the instantaneous temperature difference of 150 ° C or so, ordinary glass can only withstand 75 ° C. The water just boiled is 100 ° C, if you are not in the extremely cold region, the temperature difference of 150 ° C, no matter how toss do not crack. But ordinary glass is not good, a little cold pour into boiling water on the crack. Safety glass performance is particularly stable, whether ordinary glass or high borosilicate glass, ordinary drinking water will not have any harmful substances precipitated.
As you no doubt know, when you go into the lab in chemistry class, you find that almost all the chemical reagents are contained in various glass test tubes and bottles. If its chemical properties are not stable, it can not be widely used. Appearance High borosilicate glass because of its higher strength, can be made thinner, lighter.
At the same time, compared with ordinary glass, high borosilicate glass transmittance is higher, more crystal transparent, use experience is better.