Defu Electric Heating mainly produces graphene heating sheet, polyimide PI heating film, PET heating film, silica gel heating and other electric heating products.
Daily necessities series: hand warmers, electric gloves, electric scarves, electric clothes, insulation cups, household insulation bowls, etc.
Health products series: health shoes, health insoles, health underwear, warm palace treasures, heating products, electric heating belts, massage goggles, etc.
Other product series: curling iron, car seat cushion, car rearview mirror heating film, etc.
Graphene, also known as "single-layer graphite sheet", refers to a dense layer of carbon atoms wrapped in a honeycomb lattice, and the carbon atoms are arranged in a two-dimensional structure, which is similar to a monoatomic layer of graphite.
In 2004, the discovery of graphene with two-dimensional structure overthrew the cognition that "thermodynamic fluctuations do not allow two-dimensional crystals to exist freely at finite temperatures", which shocked the whole physics community. Its discoverers, Heim and Novoselov of the Department of Physics and Astronomy of Manchester University in England, were nominated for the 2008 Nobel Prize in Physics. Compared with carbon nanotubes, graphene has a perfect hybrid structure, and the large yoke system makes it have strong electron transport ability. Moreover, the raw material for synthesizing graphene is graphite, which is cheap, indicating that graphene will be superior to carbon nanotubes in application. Compared with silicon, graphene also has unique advantages: the microprocessor based on silicon can only perform a certain number of operations per second at room temperature, but there is almost no resistance for electrons to pass through graphene, and the heat generated is very small. In addition, graphene itself is a good heat conductor and can dissipate heat quickly. Because of its excellent performance, if electronic products are made of graphene, the running speed can be greatly improved. Speed is not the only advantage of graphene. Silicon cannot be divided into small pieces smaller than 10nm, otherwise it will lose its attractive electronic properties; Compared with silicon, the basic physical properties of graphene are unchanged when it is segmented, and its electronic properties may be abnormal. Therefore, when silicon can't be smaller, graphene smaller than silicon can continue to maintain Moore's law, and it is very likely to become a substitute for silicon and promote the development of microelectronics technology.
Single-layer graphene refers to a two-dimensional carbon material (hexagonal honeycomb structure) composed of a layer of carbon atoms with benzene ring structure. ?
Double-layer or double-layer graphene refers to a two-dimensional carbon material with benzene ring structure (i.e. hexagonal honeycomb structure) which is formed by stacking two layers of carbon atoms in different stacking ways (including AB stacking and AA stacking). ?
A few layers refers to a two-dimensional carbon material composed of 3- 10 layers of carbon atoms which are periodically and closely packed in a benzene ring structure (i.e. hexagonal honeycomb structure) in different stacking modes (including ABC stacking and ABA stacking).
Multilayer graphene, also known as multilayer graphene, refers to a two-dimensional carbon material with a thickness of more than 10 and less than 10nm, in which carbon atoms with benzene ring structure (i.e. hexagonal honeycomb structure) are periodically and closely stacked in different stacking ways (including ABC stacking and ABA stacking).