Many families are used to putting a thermos pot at home to drink water. Especially in winter, the thermos pot can provide a long heat preservation time, which is very convenient for families to drink warm water all the time. As we all know, the insulation performance of a thermos pot has a lot to do with its inner container, so what materials are the inner container of the thermos pot?
1, stainless steel liner
Most of the thermos pots with stainless steel insulation liner are made of food-grade 304 stainless steel, which has strong corrosion resistance and low thermal conductivity, and can provide good insulation effect after interlayer vacuum treatment.
2, glass liner
High borosilicate glass or borosilicate glass is mostly used in insulated kettles with glass liners, with good high temperature resistance and safe use. Silver plating on glass liner can also use the principle of specular reflection to reduce heat loss and improve heat insulation effect.
3, ceramic liner
Ceramic insulation liner is safe and harmless, but the cost and insulation effect are not particularly ideal, so there are few insulation pots with ceramic liners in the market.
4, purple sand liner
The inner container made of purple sand has certain functions of heat preservation, health preservation and conditioning, and is usually used with stainless steel shell to improve the heat preservation effect and service life. Another advantage of purple sand thermos is that it is slow in heat transfer and not easy to heat.
5, plastic liner
The plastic liner only has heat preservation function, which has short heat preservation time and poor heat preservation effect, and is generally not used often, so there are fewer plastic heat preservation pots on the market.
The above are five kinds of common liner materials for thermos pots. Usually, stainless steel liner and glass liner are two common liners. So is the glass liner of the thermos good or stainless steel?
2. Is the glass thermos better or the stainless steel thermos better?
Generally, buying a thermos will encounter the problem of buying a glass thermos or a stainless steel thermos. So how to choose these two kinds of thermos? The difference between glass thermos and stainless steel thermos is mainly reflected in the following aspects:
1, insulation effect
According to the requirements of national standards, the daily thermal insulation container for double-layer glass vacuum bottle liner is 1.8~2.0L, with a diameter of 40~44mm, temperature measuring time of 24h, and the thermal insulation efficiency is ≥60 degrees Celsius; The capacity of stainless steel products with inner plugs is ≥ 1.8L, and the caliber is ≥ 39 ~
2. Materials
Glass thermos adopts high borosilicate glass or borosilicate glass, and stainless steel thermos adopts food-grade 304 stainless steel or 3 16 stainless steel.
Step 3 use
Stainless steel liners are generally not used to hold acid-base liquids, or fruit juice, milk, carbonated drinks, etc. So as not to cause chemical reaction, but it is no problem to hold hot water every day. The chemical properties of glass are more stable and there will be no acid-base reaction, so the glass liner is relatively safer.
Step 4 use
The use experience of glass thermos and stainless steel thermos is similar, but due to the different materials, glass thermos is easier to break than stainless steel thermos. If you have children at home, you must put thermos flask in a safe place where they can't reach.
Generally speaking, stainless steel thermos and glass thermos have their own advantages and disadvantages. How to choose depends on the needs of the family, but no matter what kind of kettle you choose, you must choose the products produced by regular manufacturers to buy.