Every time the hand warmer is used up, many friends will always tear it apart to see the composition inside, and at the same time, they will be afraid of the black powdery stuff inside. So what exactly is inside the hand warmer? Today, I will explain to you its composition and function.
Composition
The powder in the hand warmer is mainly composed of activated carbon, vermiculite, iron powder, water-absorbent resin, and salt.
Function
A. Iron powder:
These are the main ingredients that promote the heat of the hand warmer. The hand warmer can generate heat, mainly due to the fine iron powder. During production, the iron powder is wrapped in a sealed bag to isolate the air. After the transparent film is removed, the oxygen in the air passes through the non-woven bag and comes into contact with the iron powder. Under the catalysis of water and salt, the iron powder undergoes an oxidation reaction and becomes iron oxide (Fe2O3). Since this oxidation reaction is exothermic, heat is released.
B. Activated carbon:
Everyone knows this term, ordinary activated carbon can be used to absorb impurities, and it is usually used to absorb the smell of new houses or new cars. The activated carbon in the hand warmer is used to absorb the moisture generated during the heating process.
C. Vermiculite:
Vermiculite is an iron-magnesium aluminosilicate mineral with a composition of Mg0.5(H2O)4Mg3AlSi3O102. It is named after it can rapidly expand and bend in the shape of a leech when heated. Vermiculite is the world’s premier super-insulation material. After the vermiculite is subjected to a series of complex chemical treatments, the extracted vermiculite film is translucent. The thermal insulation properties of the surface layer of this film are excellent. It is suitable for making fire-proof covering, roof heat-proof, high-temperature gaskets, expansion joints for furnaces or boilers, household appliances such as refrigerators, heat-proof layers of incubators, and cable outer layers.
Features.
1: Natural minerals, green and environmental protection. Vermiculite is made by firing at a high temperature of 800 degrees, which is non-toxic and harmless;
2: Large volume and lightweight (five to six square meters per ton)
3: High heat resistance (maximum operating temperature 1100 degrees)
4: High thermal insulation (because the vermiculite that has been expanded by roasting has a small air barrier, it has excellent thermal insulation performance.)
After reading it, you should know that this is used to maintain the warmth of the hand warmer, so it will not get cold after a while!
Therefore, after reading the powder composition of these hand warmers, you should have a deep understanding of the safety of hand warmers, and start to feel more and more confident about hand warmers. As a hand warmer manufacturer, we also use the best raw materials and the safest processing to improve the evaluation of each customer. Qingdao HongKing Maxwarm Co., Ltd. is willing to provide you with the best warm stickers!