The advantage of graphite paper is that the carbon content is very high. It can be seen that the conductive nature of graphite paper is due to the carbon content. Of course, there are other components in graphite paper, such as the chlorine content, which has been said to exceed 35 and the sulfur content exceeds 300 or more. From this content, we can see that the tensile strength of the successfully made graphite paper is very high, and its compression rate is also very good. We can freely store graphite paper. In terms of application, it is also very convenient. Why we announced today, I will be conducting graphite paper and graphite paper principle electrically conductive relevant knowledge.
Graphite paper introduction
Graphite paper (graphite paper): The high carbon phosphorus graphite is chemically treated and expanded at a high temperature. It is the base material for the manufacture of various graphite seals.
Graphite paper use
With the acceleration of the upgrading of electronic products and the ever-increasing thermal management requirements of miniaturized, highly integrated, and high-performance electronic devices, new new technologies for cooling electronic products, namely the new solution for heat dissipation of graphite materials, have also been introduced. This new natural graphite solution utilizes graphite paper for high heat dissipation, small footprint, and light weight. It evenly conducts heat in both directions, eliminates “hot spotsâ€, and shields heat sources and components while improving the performance of consumer electronics.
Mainly used for seal ring seals, mechanical seals, graphite strips, fillers, composite plates, cylinder head gaskets, and graphite seal base materials.
Widely used in electric power, petroleum, chemical, instrumentation, machinery, diamond and other industries, dynamic sealing and static sealing of machines, tubes, pumps and valves. It is an ideal new sealing material to replace traditional seals such as rubber, fluorine plastic, and asbestos.
The main purpose of graphite paper application technology
Used in laptops, flat panel displays, digital video cameras, mobile phones, and personal assistant devices.
Graphite Paper 6 Features
1. Easy Processing of Graphite Paper: Graphite paper can be die-cut into different sizes, shapes, and thicknesses, and can provide die-cutting flat plates. The thickness can be from 0.05 to 1.5 m.
2, high temperature resistance of graphite paper: Graphite paper use temperature up to 400 °C, the lowest can be lower than -40 °C.
3. High thermal conductivity of graphite paper: In-plane thermal conductivity of graphite paper can reach 1500W/mK, thermal resistance is 40% lower than aluminum, and 20% lower than copper.
4, the flexibility of graphite paper: graphite paper is easy to make laminates with metal, insulating layer or double-sided adhesive, increase design flexibility, there can be adhesive on the back.
5. Lightness and thinness of graphite paper: Graphite paper is 30% lighter than the same size aluminum and 80% lighter than copper.
6, the ease of use of graphite paper: graphite heat sink can be smooth attached to any plane and curved surface.
Graphite paper manufacturer
Ningbo Yinzhou Huaxin Seals Factory, Main Products or Services: Graphite Products; Graphite Profile Processing; Graphite Powders; Graphite Bases; Graphite Casting Tubes; Graphite Paper; Graphite Blocks; Crystallizers for Copper Materials; Graphite (Carbonizer); Graphite Rod; Small Graphite Rod (5-19mm); Flow Tank Sheath; Graphite and Carbon Products; Graphite Crusher; Graphite Ball; Graphite Heater; Manufacturers, widely used in electric power, petroleum, chemical, instrumentation, machinery, diamond and other industries of the machine, pipe, pump, valve dynamic seal and static seal, product quality is excellent, to meet the different consumers of graphite paper applications.
Shanghai Luolai Graphite Products Co., Ltd. mainly exports graphite paper. The graphite paper produced by the company is more leak-proof than other graphite papers. It is an ideal new type that can replace traditional seals such as rubber, fluorine plastic and asbestos. Sealing materials, while eliminating "hot spot" areas, shielding heat sources and components while improving the performance of consumer electronics products.
Qingdao Heilong Graphite Co., Ltd. mainly produces and sells graphite paper. Graphite paper produced by the company is widely used in petroleum, chemicals, electronics, toxic, flammable, high temperature equipment or components, high temperature resistance, corrosion resistance, and good electrical conductivity. Graphite strips, fillers, gaskets, composite plates, cylinder head gaskets, etc. Excellent product quality has always been a leader in the industry and is deeply loved by consumers.
Graphite paper production process
1. With the upgrading of electronic products, more and more mini, acceleration, high integration and other electronic devices are flooding into the electronics market. These electronic products require a certain amount of cooling effect. We can use graphite paper to solve the problem of high temperature products. cooling problem. Widely used in electric power, petroleum, chemical, instrumentation, machinery, diamond and other industries, dynamic sealing and static sealing of machines, tubes, pumps and valves. It is an ideal new sealing material to replace traditional seals such as rubber, fluorine plastic, and asbestos.
2. Graphite paper is made of flake graphite under the action of nitric acid and hydrogen peroxide, made of expanded graphite products, Qingdao Huatai graphite will be filtered through a drying machine and placed in a cyclone for heating and expansion of 950 °C.
3. Then several times of rolling according to different specifications to form graphite paper.
Why graphite paper can conduct electricity
Because graphite contains free-moving charges, the charge moves freely after being energized to form a current, so it can conduct electricity. The real reason why graphite conducts electricity is that six carbon atoms share six electrons and six electrons, and six centers of big yttrium 66 bonds. In the same layer of graphite carbon rings, all 6-membered rings form a yttrium-fluorene conjugated system. Or in the same carbon ring of graphite, all the carbon atoms form a huge big bond, and all the electrons in this big bond can flow freely in the layer, which is why graphite paper can conduct electricity.
Graphite is a lamellar structure with unbonded free electrons between the layers and can move directionally after being energized. In fact, all substances are conductive, only the size of the resistivity problem. The structure of graphite determines that it is the smallest in the carbon material.
Graphite paper conductive principle
Carbon is a tetravalent atom. On the one hand, just as the outermost electrons of a metal atom are easy to lose, and the outermost layer of carbon is less like electrons, it has a certain conductive property, in which pentavalent phosphorus and trivalent boron are infiltrated. , will produce the corresponding free electrons and holes. In addition to the outer electrons that carbon would have easily lost, under the action of the potential difference, there will be movement and fill holes. Generates electron flow. This is the principle of semiconductors.
Graphite paper conductive properties
Conductivity, thermal conductivity: The electrical conductivity of graphite is 100 times higher than that of non-metallic minerals. Thermal conductivity exceeds metal materials such as steel, iron, and lead. Thermal conductivity decreases with increasing temperature, and even at extremely high temperatures, graphite becomes a thermal insulator. Graphite can conduct electricity because each carbon atom in graphite forms only three covalent bonds with other carbon atoms, and each carbon atom still retains one free electron to transfer the charge.
Editor's summary: The conductive nature of graphite paper is well known. Therefore, we should not place graphite paper next to the extremely high-electricity in thunderstorms and should not be touched by children. If children are contaminated with carbon, Playing electrical appliances again is detrimental to your health. Of course, although graphite paper has conductive properties, its heat dissipation effect can be extremely high, and it is not relevant to use graphite paper to wrap thermal energy. Afterwards, as long as you pay attention to storage, you will be perfectly safe.
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