Chinese are used to drinking hot water, do not like to drink cold water, so the insulation kettle is an item that every household will use, there are many kinds of materials for thermal insulation, each material has their own advantages and disadvantages, but which material is the healthiest, is our most concerned issue. Let’s take a look at what materials are used in the inner tank:
1. Glass inner tank
Double layer glass, middle vacuum, borosilicate glass surface plated with silver, copper, good heat preservation, acid and alkali resistance, but can not withstand collision, easy to burst. It is suitable for indoor use, but it cannot be placed on the ground, and it is easy to break due to knocking. Although there are many disadvantages, the glass inner tank is one of the healthier materials, and there are still many elderly people who prefer to use the glass inner tank of the insulated kettle.
2. Stainless steel inner tank
Not easy to break, anti-fall, suitable for indoor or outdoor carrying, but the heat preservation of stainless steel inner tank is slightly worse than that of glass, acid resistance is also poor, and some iron elements will be released, so it is worse than glass inner tank in terms of health and safety.
3. Ceramic inner tank
The inner tank of ceramic material is resistant to acid and alkali and corrosion, and is the most healthy and safe material. Due to the high requirements of the production process and the high production cost, it is relatively rare on the market, but you can buy a ceramic insulation water cup with a smaller volume.
4. Purple sand inner tank
Like ceramics, the inner tank fired with purple clay is the healthiest and safest material. Due to the high production cost, it is only found in purple clay insulation water cups with small volume.
4. PTFE coated inner tank
Mainly used for some electric kettles, PTFE coating is added on the surface of stainless steel inner tank, which has the characteristics of acid and alkali resistance, organic solvent resistance, high temperature resistance and corrosion resistance. It can be used for a long time from -180 to 260 degrees. The disadvantage is that the inner tank is not wear-resistant, not scratch-resistant, and use citric acid to clean the scale when cleaning the inner tank. Whether there is an impact on health and safety is yet to be confirmed.