In the cold winter, there's a warmth, which is probably the happiest thing in life! When taking the child out, the cold blows and parents worry about the child's cold. At this point, it's lightWarm babyNot only are the little hands and feet warm for the children, but the children are less concerned and less reassured。
What are the structural components of a warm baby? What the hell is its heat? This knowledge not only meets the child's curiosity, but is also a living family science classroom. Let's explore science with the kids, start with the little things around us。
Why does a warm baby get hot
The response principle for warm babies is to use the original battery to accelerate the oxidation reaction and to convert chemical energy to thermal energy. In short, a warm baby consists mainly of carbon powder, iron powder, water and salt water, supplemented by additives, which, due to the absence of positive and negative poles, prevent the electronics from dissecting the positive and negative electrons and creating short circuits that produce heat (original battery principles)。
In order to keep the temperature warm, warm babies use mineral material leeches to keep the temperature warm. Because warm babies can't react before they are used, the bags are special. The warmed baby consists of a layer of raw materials, a layer of back rubber and a bag of unswipeded bags. Sluice-free bags are made using micro-pore-transmitting membranes. It's also got to have a conventional inhalant exterior -- the back layer. When used, the outer bag is removed and the inner bag (without a swipe bag) is exposed to the air, where the oxygen in the air enters through the venting film. The heating time and temperature is controlled by the oxygen penetration rate of the permeable membrane。
Warm babies use iron oxidation to heat. In fact, it is based on the principle that iron is aerobic corrosion in wet air. At the same time, using the strong adsorption of activated carbon, water vapour is stored in the accelerator structure of activated carbon, water vapour is liquidized into droplets, in contact with air and iron powder, and reacts more rapidly to produce iron hydroxide and release heat under the catalytic effect of sodium chloride。
Warming and colding, rational use
There is no adverse reaction to warm babies in general, who provide heat to the body and are covered in shoulders, waists, knees, etc., and relieve the cooling and ageing of joints. However, people with diabetes, children and the elderly must be careful to warm their babies. As the end of the body of a diabetic patient is reduced and the children and the elderly are not sensitive, they are prone to cold burns. The elderly are the most affected by the burning of warm babies, which is related to the lack of careful reading of methods and care before use. Poor-quality products may use industrial iron powder, so consumers are advised not to buy cheap products。
The maximum heat temperature of a warm baby can reach 66°c and is spread over a 12-hour period, so that the warm baby is strictly forbidden to be attached directly to the skin, and not to be attached to thinner clothing or to sleep. Use should preferably be performed every one hour to check the skin and find red spots or other discomfort and should be stopped immediately。
When we understand the principles of warm babies, we can see that there's not much of a complicated theory behind convenience, and sometimes a little simple common sense that can be used properly to create higher value. Next time you warm up with the baby, you can talk about the "breath" of iron powder, the "magic power" of the original battery, so that each warmth becomes a time for parent-child learning. Science is in life, and warmth is in knowledge。
If you also have a good idea of using life supplies and children for science experiments, welcome to the comment section, to protect the children's curiosity and warmth throughout the winter
In order to learn more about science, you are invited to make an appointment for the official broadcast of knowledge is power at 12:30 on january 15th。
