Decryption of graphene heating service principle
At the closing ceremony of the PyeongChang Winter Olympics in 2018, "Beijing 8 minutes" was unveiled, and the temperature was -3 °C. In order to do the cold and warm work of 72 actors, the main team used graphene intelligent heating clothes to ensure them. In the light costumes, it will not be frostbitten, and it can also ensure the movement is stretched; and there are graphene heating vests, graphene waistbands, graphene heating, etc. on the market, you know the main components of graphene heating clothes. What is it? The graphene heating suit is a warm clothing made of graphene. Graphene is nearly transparent and absorbs only 2.3% of light. And it is very dense, even the smallest gas molecules can not penetrate. These features make it ideal for use as a raw material for transparent electronic products such as transparent touch displays, illuminators and solar panels. As a new type of nanomaterial that is currently found to be the thinnest, strongest, and most conductive and thermally conductive, graphene is called "black gold" and "king of new materials." Graphene has a perfect two-dimensional crystal structure, and its crystal lattice is a hexagon surrounded by six carbon atoms and has an atomic layer thickness. The carbon atoms are connected by σ bonds, and the bonding mode is sp2 hybridization. These sigma bonds make graphene extremely excellent in mechanical properties and structural rigidity. Graphene is 100 times stronger than the best steel and even exceeds diamonds. In graphene, each carbon atom has an unbonded p-electron that can move freely in the crystal and move at a speed of up to 1/300 of the speed of light, making graphene have good electrical conductivity. Graphene is a thin layer composed of a layer of carbon atoms, and the carbon atoms are sp2 hybridized to form a planar hexagonal single-layer nanomaterial. A large amount of graphene exists in nature, but since it exists in the form of layers of graphite, it is very difficult to obtain a single layer of graphene. Until 2004, two scientists at the University of Manchester, André Haichou and Konstantin Novoselov, succeeded in separating graphene from graphite and won the 2010 Nobel Prize in Physics. The heating principle of graphene heating suit is based on the characteristics of single-layer graphene. First, graphene is the material with the highest thermal conductivity so far, and has very good thermal conductivity. Secondly, graphene has a carrier (conducting ion) of 15000 cm/(vs) at room temperature, which is ten times higher than that of silicon material. It is the two substances known as the indium antimonide (InSb) which has the highest carrier mobility. More than double, unlike many materials, the electron mobility of graphene is less affected by temperature changes. Joule's law is a law that quantifies the conduction current that converts electrical energy into heat. The content is: the heat generated by the current through the conductor is proportional to the square of the current, proportional to the resistance of the conductor, and proportional to the time of energization. Therefore, in the process of using the graphene heating device, after charging through the battery, it will rapidly heat up, and heat is generated to keep people warm. Rain Cap,Stove Accessories Rain Cap,Solo Stove Accessories,Camp Chef Stove Accessories Jinan Huancheng Heating Equipment Manufacturing Co., Ltd. , https://www.globalstove.com