Glasses are considered safe drinking water containers due to their stable chemical properties. Therefore, how to choose a high temperature resistant and anti explosion glass is a concern for many people.
The method is actually very simple. After filling hot water, the surface of a high-temperature resistant glass cup is not hot, while the surface of a high-temperature resistant glass cup is hot after filling hot water. Some glasses adopt a double layer design, which not only provides insulation but also provides insulation.
If you buy a glass that is not heat-resistant at home, you don't need to throw it away. As long as it is handled properly, it can still be used normally. Ordinary glass cups that are not resistant to high temperatures can be used at temperatures ranging from -5 to 70 degrees Celsius. The reason for sudden breakage is due to sudden contact with cold and heat, resulting in a large temperature difference and uneven expansion between different parts of the glass. When the uneven difference is too large, the glass is prone to cracking. Therefore, when using ordinary glass cups, before pouring in boiling water, a little warm water should be added first. After the glass is warm, add boiling water, Reduce the temperature difference that the glass can withstand, so there is no problem.
High temperature resistant glass is generally made of Gaopeng silicon glass. The special material has a very low coefficient of thermal expansion, which can not only withstand the high temperature of about 400 degrees Celsius, but also withstand the instantaneous temperature difference of about 150 degrees Celsius. It is convenient and reassuring to use.
When choosing a cup, if it is a high-temperature resistant glass cup, there is usually a relevant label on the cup, indicating the temperature of use and the applicable range. When purchasing, remember not to be greedy for cheap. Some nominal heat-resistant glass cups are actually made of ordinary materials.