Cold air began to affect shandong last night, accompanied by wind and visible cooling. Around 1 february, as a colder air arrives, chinan will be warm and windy
When it comes to warming, the writer thinks of the recognized heatmaker, the warm baby! How does the warm baby get hot? Where is the warm baby? Let's get to know
Warm baby fever
Thermal materials in a warm baby are polymers synthesized by iron powder, activated carbon, ricin, inorganic salt and water, torn by a gel layer that reacts immediately with oxygen in the air and deheating。
Iron powder: oxygen in the air reacts to iron powder, which releases heat when it is corroded. These heats bring iron powder to about 68°c。
Small, porous bags: open plastic bags, air penetrates into a small, warm baby bag, where the chemical reaction to heat begins. The more small holes mean more air, so there are more small holes for warming a baby than normal。
Activated carbon: the role of activated carbon is to absorb the water in the air and ensure that the oxidation process is carried out smoothly. It also has thermal function, so it spreads the heat evenly. The volume of charcoal swells after heating。
Sodium chloride: sodium chloride (salt) as an ice-free agent in snowy cities corrupts the vulnerable parts of cars. Here, sodium chloride (with water) is a catalyst for iron powder corrosion。
Selenium: this water-bearing magnesium silicate is swelling in heat and looks like worms. It's light, it's strong, it doesn't react chemically in warm babies, it doesn't smell, so it's a fireproof supermaterial. It's an insulation, and it's used in some building materials. Together with activated carbon, it spreads iron powder and avoids the heating of fillings in warm babies。
Where's the warmest sticker
1. The cervical vertebrae, where the warm baby is attached to the cervical vertebrae, warms the whole body。
2. A person who fears the cold may be placed behind his waist or, if he fears the cold on a day-to-day basis without any special symptoms, on the outside of his waist eye。
3. In the back of the outer garment, the warmer baby is the warmest on the back of the outer garment and can feel the heat throughout the body。
Be careful, warm babies don't touch their skin
In addition, the use of “hot babies” must be safe and the choice of spectrum products should not be used in conjunction with other heating tools, so that local temperatures do not burn the skin or be used in less sensitive sleep times。
Source: tianjinkopp, chinan city science and technology centre
