Is the thermos cup poisonous?

Hello, I'm a stranger, Mulberry, and I'll answer this question.

Our diet should adapt to the times. When the weather is hot, people will eat some cold food and drink some cold drinks in order to regulate their body temperature. But now that the weather is getting cold, the thermos cups should be taken out by every household.

But when it comes to baby, it's like putting forward a poisonous thermos cup exposed by CCTV, which directly shocked the whole network. Everyone never imagined that such an ordinary thermos cup in our life would be toxic.

So what's the news? Why is it poisonous? Or are the thermos cups poisonous? Let's explain it in detail below.

The material of the thermos cup. In fact, the earliest thermos cups were made of glass, which is similar to our current thermos bottles. The thermos cup was originally invented to liquefy a gas, but later something like this was invented by accident.

In fact, the structure of stainless steel thermos cup is similar to that of thermos bottle, because it is divided into two layers, inner and outer, and then there is vacuum in the middle, so the heat preservation effect is better, because convection can only dissipate heat when it is conducted to vacuum, while metal dissipates heat slowly.

Because of this, the insulation effect of the thermos cup can be preserved for a long time, and because of the material of stainless steel itself, it is actually better than those glass bottles, because it will not break.

Why are thermos cups poisonous? In fact, not all thermos cups are toxic, mainly because of the different materials. First of all, the metal used in thermos cups is generally stainless steel. There are some heavy metals in stainless steel, such as lead, arsenic, cadmium and other metals with impurities. If the intake of these metals is relatively high, it will have a very serious impact on our human body.

Therefore, the corrosion resistance of stainless steel cups must be strong, and in our life, there are three kinds of stainless steel materials: 20 1, 304, 3 16.

The thermos should be made of at least 304 material. Because if it is unqualified, the first thing is poor corrosion resistance, and at the same time it may rust, which is actually the material of 20 1, so you must pay attention to at least 304 when buying cups.