Do you know high borosilicate glass? In our daily life, we just know normal glass cup can not bear the sudden and violent temperature change, and it will burst. And have no idea on a glass material which can bear high temperature and low temperature safely. Today follow me to learn more new knowledge of glass!
Ordinary glass is soda lime glass, whose main composition is silicon for 70% at least, not includes boron. So it can only withstand the temperature difference of 75 degree in an instant. In our daily life, the normal glass is used widely and mainly used in cold drink, mainly in pressing process and blowing process.
High borosilicate glass (also known as hard glass), is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high transmittance and high chemical stability.
The main components of the high-borosilicate glass are boron for 12.5-13.5% and the silicon for 78-80%, so the acid resistance of the high-borosilicate glass is excellent, and the strain temperature difference of the high-borosilicate glass is 520 degree. So it does not contain toxic substances, and the high temperature resistance and acid resistance of high borosilicate make it difficult to precipitate harmful substances in daily drinking water use.
The main processes are manual blowing and semi-automatic assembly line, as well as special case suppression. So the borosilicate glasswares are usually light and thin. There are some high borosilicate glasswares for your reference, such as single wall and double wall glass, hot tea glass botter and kettle, storage jars, etc.
Tips for suing high borosilicate glass:
1. Direct heating with open fire is prohibited
2. Empty in microwave oven is prohibited
3. When taken out of the microwave oven, should be placed on a dry board, do not touch wet and cold objects.
All in all,compared with normal glass, high borosilicate glass has a good heat resistance and acid resistance, very convenient for us to drink hot tea and coffee.