Modern people pay more attention to health preservation. One of the most important elements in health preservation is water. 70% of our body is composed of water. Drinking water for health preservation has also become a hot topic. An adult should drink about 2L of water a day. Therefore, people’s requirements for water quality are getting higher and higher. When it comes to drinking water, you can’t do without water cups. There are also a variety of water cups on the market. Thermos cups, glass cups, ceramic cups, and plastic cups can be said to have everything. Are the quilts safe? Certainly not, some cups will cause harm to the human body.
glass
We know that the main component of glass is silicate, which has relatively stable chemical properties and high temperature resistance and corrosion resistance. Therefore, generally speaking, glass is relatively safe and healthy. The only disadvantage is that it is easy to break. If you have children at home, you can use less Use a glass, beware of damage from shards of glass.
plastic cup
Plastic cups are usually very common, easy to carry and not easy to break, but many plastic cups will volatilize harmful substances when they encounter high temperatures, causing harm to the human body, so we should choose carefully when choosing plastic cups, usually For plastic cups, there are several materials: No. 1 PET, which is commonly used in mineral water bottles. When the water temperature reaches 70 degrees, it will deform and volatilize substances that are harmful to the human body. The same is true for long-term sun exposure. It will also volatilize harmful substances. In addition, HDPE No. 2, PVC No. 3, and PE No. 4 will volatilize harmful substances when the water temperature is high, so the above four plastic materials cannot be used to make water cups. The safer plastic is No. 7 PC, which has a high melting point, high temperature resistance, relatively stable chemical properties and high safety. However, the plastic cups on the market are rarely made of No. 7 material, so it is better to use less plastic cups.
porcelain cup
Ceramic cups are relatively stable, but some ceramic cups will have a dish pattern in them, which are usually first colored and then fired, so there is usually no problem, but some ceramic cups are fired. It is not safe to color after completion, so when choosing a ceramic cup, it is best to choose the inner wall without coloring.
stainless steel cup
The stainless steel cup is very strong and looks very beautiful, but due to the relatively strong thermal conductivity of stainless steel, it is easy to burn your hands when you hold hot water. In addition, stainless steel is easy to react with acidic substances, so it is not suitable for holding vinegar and juice. Wait.
Generally speaking, the safer cups are glass cups and ceramic cups, and they have various shapes, beautiful and fashionable, and the least safe is plastic cups, so when choosing plastic cups, it is best to choose No. 7 plastic cups.
Post time: Aug-15-2022