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Many families are accustomed to placing a thermos jug at home for drinking water. Especially in winter, the thermos jug can provide a long heat preservation time, so that the family can drink warm water all the time, which is very convenient. As we all know, the thermal insulation performance of the thermos jug has a lot to do with its inner tank, so what are the materials of the inner tank of the thermos jug?
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1. Stainless steel liner
Most of the insulation pots with stainless steel insulation liner are made of food-grade 304 stainless steel. The stainless steel material has strong corrosion resistance and low thermal conductivity. After the interlayer is vacuumed, it can provide good insulation effect.
2. Glass liner
Most of the thermos pots with glass liner are made of high borosilicate glass or borosilicate glass. This type of glass has good high temperature resistance and is relatively safe to use. Silver plating on the glass liner can also use the principle of mirror reflection to reduce heat loss and improve the heat preservation effect.
3. Ceramic liner
The ceramic thermal insulation liner is safe and harmless, but the cost and thermal insulation effect are not particularly ideal, so there are generally few thermal insulation pots with ceramic liners on the market.
4. Yixing liner
The inner tank made of Yixing has certain functions of heat preservation, health preservation and conditioning. It is usually matched with a stainless steel shell to improve the heat preservation effect and service life. Another advantage of the Yixing thermos is that it transfers heat slowly and is not easy to burn your hands.
5. Plastic liner
The plastic liner only has heat insulation function, and the heat preservation time is short, the heat preservation effect is poor, and it is generally not used frequently, so there are relatively few plastic heat preservation pots on the market.
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Generally, when you buy a thermos, you will encounter the question of whether it is better to buy a glass thermos or a stainless steel thermos. So how do you choose between these two thermoses? The difference between glass thermos and stainless steel thermos is mainly reflected in the following aspects:
1. Thermal insulation effect
According to the requirements of national standards: the daily thermal insulation container of the double-layer glass vacuum bottle liner is 1.8~2.0L, the diameter is 40~44mm, the temperature measurement time is 24 hours, and the thermal insulation performance is ≥60 degrees Celsius;
The stainless steel product with inner plug has a capacity of 1.8L, a diameter of 39~44mm, a temperature measurement time of 24 hours, and a heat preservation performance of ≥61 degrees Celsius. Therefore, the thermal insulation effect of these two materials is similar when the specifications are the same.
2. Material
The material of the glass thermos is high borosilicate glass or borosilicate glass, and the material of the stainless steel thermos is food grade 304 stainless steel or 316 stainless steel.
3. Purpose
The stainless steel liner is generally not used to hold acid and alkali liquids, or fruit juice, milk, carbonated drinks, etc., so as not to cause chemical reactions, but it is no problem to hold hot water daily. The chemical properties of glass are more stable, and there will be no acid-base reaction, so the glass liner is relatively safer.
4. use
The use experience of glass thermos and stainless steel thermos is similar. However, due to the difference in material, glass thermos is easier to break than stainless steel. If there are children at home, be sure to put the thermos in a safe place out of their reach.
On the whole, stainless steel thermos and glass thermos have their own advantages and disadvantages. How to choose depends on the needs of the family. However, no matter which kettle you choose, you must choose products produced by vacuum flask manufacturer for purchase.
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