What are the glass materials?

With the continuous improvement of material life, people’s pursuit of quality of life is also higher and higher. All items are purchased in the direction of environmental protection, health, hygiene and high quality. These items add a quality to your daily life. Glass is indispensable in daily life, but its material and technology are very different. Satisfactory glasses can not only add color to our life, but also be very beneficial to our health.
Glass cups are divided into ordinary glass and heat-resistant glass in terms of material. Ordinary glass is a glass cup made of high white or fine white glass by pressing or machine blowing. The glass manufacturer tells you that this glass cup is more common in the market and its price is low. The disadvantage is that it is not resistant to high temperature and easy to crack. High-temperature resistant glass is made of high borosilicate glass, which can resist sudden cold and sudden heat, and can resist 150 ℃ without cracking.
With the current popularity of various water cups in the market, there are a variety of cups on the market, including plastic cups, purple sand cups, and glasses, which has caused great confusion to people’s choice. A study shows that the glass is the most suitable for drinking water. The reasons are as follows. The glass cup has fast heat dissipation, which is conducive to the control of water temperature, and is easy to control the original flavor of tea when making tea; Don’t think the glass is just transparent and beautiful. The glass manufacturer tells you that the glass is the healthiest of all materials. Professor Li Fuxing, director of the Health Water Professional Committee of the China Association for the Promotion of Medical Sciences, enumerated the characteristics of glass cups: the glass does not contain organic chemicals during the process of firing. When people drink water or other drinks from the glass, they do not need to worry about the chemicals being drunk into the stomach. Moreover, the glass surface is smooth and easy to clean, and bacteria and dirt are not easy to breed on the wall of the glass, so people drink water from the glass is the healthiest The safest.
The explanation from the network is for your reference. The main glass materials are as follows:
1. Soda-lime glass
Glasses and bowls used in daily use are made of this material, which is characterized by small temperature difference due to sudden changes. For example, if boiling water is injected into a glass just taken out of the refrigerator, it is likely to burst. In addition, it is not recommended to put soda-lime glass products into microwave oven for heating, because there are also certain safety risks.
2. Borosilicate glass
This material is heat-resistant glass, which is used to make the common glass fresh-keeping box set on the market. It is characterized by good chemical stability, high strength and sudden temperature difference greater than 110 ℃. In addition, this kind of glass has good heat resistance and can be safely heated in a microwave oven or electric oven.
However, there are also some precautions for use: First, if you use this kind of fresh-keeping box to freeze liquid, please pay attention not to overfill it, and the box cover should not be tightly closed, otherwise the liquid expanded due to freezing will exert pressure on the box cover and shorten the service life of the box cover; Second, you can’t put the fresh-keeping box just taken out of the freezer in the microwave oven for strong heating; Third, do not close the lid of the fresh-keeping box when heating it in the microwave oven, because the gas generated during heating will squeeze the lid and then damage the fresh-keeping box. In addition, prolonged heating will also make it difficult to open the box cover.
3. Glass-ceramics
This kind of material is also called super heat-resistant glass, and the very popular glass cookers on the market are made of this material. It is characterized by excellent heat resistance, with a sudden temperature difference of 400 ℃. However, at present, domestic manufacturers rarely produce glass-ceramic cookers, and most of them still use glass-ceramic as cooker panel or lid, so this kind of products still lack standards. It is recommended that consumers check the quality test report of the product in detail to fully understand the product performance when purchasing.
4. Lead crystal glass
Namely known as crystal glass, it is generally used to make goblets. It is characterized by good refraction, good hand feeling, and a crisp and pleasant sound when tapped. However, some consumers questioned its safety and believed that holding acidic drinks in this cup would lead to lead precipitation and endanger health. In fact, this concern is unnecessary, because the state has strict regulations on the amount of lead released from such products and has set experimental conditions, which cannot be replicated in daily life. However, experts still recommend not to use lead crystal glasses to store acid liquid for a long time.
5. Tempered glass
This material is made of ordinary glass through physical tempering. Compared with ordinary glass, its impact resistance and heat resistance are greatly enhanced, and the broken pieces have no sharp corners.
Because glass is a brittle material with poor impact resistance, even tempered glass tableware should be protected from impact. In addition, do not use wire balls when cleaning any glass products. Because the steel ball will scratch the glass surface invisible to the naked eye during friction, which will affect the strength of glass products to a certain extent and shorten its service life