What are the characteristics of the thermal stability of the film -shaped graphite_Industry Dynamics_News

2023-05-30

GS graphite heat dissipation film characteristic advantage

1. Excellent thermal conductivity: The thermal conductivity is as high as 600-1200 W/(M-K) (equivalent to 2 to 4 times the copper, 3 to 6 times the aluminum), 40%lower than aluminum, 20%lower than copper, 20%lower than copper lower than copper2. Light proportion: 1.0-1.9 g/cm3 (density is equivalent to 1/4 to 1/10 of copper, 1/1.3 to 1/3 of aluminum)3. Low thermal resistance, soft and easy to cut (can bend repeatedly)4. Super thinness: thickness (0.025-0.1mm)5. The surface can be combined with other materials such as metal, plastic, non -drying gum to meet more design functions and needs1. Excellent thermal conductivity: The thermal conductivity is as high as 600-1200 W/(M-K) (equivalent to 2 to 4 times the copper, 3 to 6 times the aluminum), 40%lower than aluminum, 20%lower than copper, 20%lower than copper lower than copper2. Light proportion: 1.0-1.9 g/cm3 (density is equivalent to 1/4 to 1/10 of copper, 1/1.3 to 1/3 of aluminum)3. Low thermal resistance, soft and easy to cut (can

2023-08-01

Development of Expandable Graphite

Graphite crystal has a hexagonal network plane layered structure composed of carbon elements. The carbon atoms on the layer plane are bound by strong Covalent bond, while the layers are bound by Van der Waals force force. The binding is very weak, and the distance between layers is large. Therefore, under appropriate conditions, acid, alkali gold, salt and other chemicals can be inserted into the graphite layers, And combine with carbon atoms to form a new chemical phase - Graphite intercalation compound (GIC). When heated to an appropriate temperature, this interlayer compound can instantly and rapidly decompose, producing a large amount of gas, which makes graphite expand along the axis into a new worm like material, namely expanded graphite. This unexpanded Graphite intercalation compound is expandable graphite.Expandable graphite was first discovered by Schaufautl, a German. In 1841, Schaufautl soaked natural graphite in a mixture of concentrated HNO3 and concentrated H2SO4, and t

2023-02-22

How to clean up the active board?

1. Preparation before work: Wear a hood, raindrops, glue gloves, safety helmets, glue gloves must be allowed to simply water, sore water, and allow them to be allowed to work; Add 109 sodium hydroxide solution water solution; turn on the anode rod back cover, use both hands to gently display the graphite anode board from the anode rod, and migrate to the graphite cleaning slot soak for 30 minutes.2. Actual operation: Remove the graphite anode plate that soaks soaked for thirty minutes from the soaking solution, flatten the electroplating equipment on the wooden frame, and use 240#-320#water matte paper to clean the surface layer of the graphite anode plate. , Hold the positive film with one hand, gently press the policing paper with the other hand, and drink water to clean it until the stains are eliminated, and then use the water matte paper to remove the anode oxidation and touch the guidance. After that, clean all the liquid cold water, and check whether there is dirt on the surfac

2023-08-23

The use of graphite molds is diverse

1. Graphite molds can be used as conductive materials in industry. In this regard, when using electric arc furnaces or submerged arc furnaces to smelt various alloys, strong current will be introduced into the melting zone of the electric furnace through the electrodes of the graphite mold to generate an arc. At the same time, electrical energy will be converted into heat energy to increase the temperature, which can achieve the production conditions for smelting and reaction.2. Graphite molds can be used as corrosion-resistant structural materials in industry. Due to the excellent corrosion resistance of the raw materials in graphite molds, they are often used in stainless steel and other products.3. Graphite molds can be used as compression and casting molds in industry. Due to its relatively small coefficient of thermal expansion and good heat and cold resistance, it can be used as a mold for various glassware and can also save a large amount of metal.4. Graphite molds can be used

2023-03-06

What are the key features of graphite blocks?

1. Heat transfer and conductivity: Graphite has excellent heat transfer and conductivity. It is compared with general raw materials, and its heat transfer conductivity is moderate. It is 100 times higher than ordinary non -metal materials.2. Organic chemistry reliability: The gas -graphite has excellent organic chemical reliability, which can resist acidity, alkaline resistance, and organic solution.3. heat resistance: graphite block is one of the most heat -resistant raw materials that are already known to today. Its dissolution point is 3850 ℃ ± 50 ℃, and the melting point is 4250 ℃. Discard the least, and discard 0.8%according to weight graphite. It is not difficult to see that the heat -resistant function of graphite is excellent.4. Wetness: The moisturizing function of the graphite is similar to sulfide, and the friction resistance is lower than 0.1. Its moisturizing function changes with the size of the fish scales. The larger the fish scales, the smaller the friction resistance

2023-07-17

What are the characteristics of high pure scales graphite

High -pure scales graphite has good high temperature resistance, conductivity, high -pure graphite thermal conductivity, lubrication and chemical stability. Graphite manufacturers are widely used in metallurgical, machinery, environmental protection, chemical, fire, electronics, medicine, military, military, aerospace and other fields. Its status in the national economy is becoming more and more important, and it is an indispensable and important non -metal raw material for modern industry and high -tech development. Trace impurities have a great impact on the performance of graphite products. The higher the carbon content of high pure scales, the better its performance as a functional material.In order to analyze the trace impurities in high pure scales, the sample is usually grayed or wet to digest to remove carbon, dissolved ash with acid, and then determined the impurities in the solution. The grayization method does not need to dissolve gray with ultra -pure acid, avoiding the ri

2023-05-29

Graphite and cold stack

WatereoledgraphiteModer-Fedreactor with graphite as a slow neutron reactor with graphite as a chronic agent and water as a cooling agent. In the early days of the development of the nuclear industry, graphite and cold stacks were mainly used to produce nuclear weapons installation -钚, 氖, etc. This heap is generally fuel with natural uranium metal components. Uranium 235 in the natural uranium in the pile absorbs neutron reactor in neutron and releases neutron and energy. These neutron parts are used to maintain chain nuclear fissure reactions, and some are absorbed by the uranium 238 in natural uranium and converted into it to converted into it into. 钚 239 and other 素 isotopes. Structural graphite and cold stacks use nuclear pure graphite masonry as a chronic agent and reflective layer. There are two or three thousand horizontal tunnels (horizontal piles) or vertical tunnels (vertical piles) in the graphite masonry. Inserting graphite sleeves in these holes, aluminum alloy crafts pipe

2023-12-04

Precautions for using flake graphite?

Flake graphite is a natural crystalline graphite that resembles fish scales and belongs to the hexagonal crystal system with a layered structure. Therefore, it still has good properties such as high temperature resistance, conductivity, thermal conductivity, lubrication, plasticity, and acid and alkali resistance. Below are some precautions for using flake graphite?Flake graphite is a widely used product in the metallurgical industry for refractory materials and coatings. Such as magnesia carbon bricks, crucibles, etc. Now used as anti-corrosion material. Flake graphite is an anti rust primer made of carbon black, talc powder, and oil, which has good resistance to chemicals and solvents. If chemical pigments such as zinc yellow are added to the formula, its rust prevention effect will be better. When used, it has strong thermal shock resistance and good corrosion resistance, and is the main carbon raw material used in conjunction with refractory materials. It has a significant impact

2023-06-25

What are the advantages of high-purity graphite?

High purity graphite, also known as flake like high thermal conductivity carbon powder, is actually a product that we are talking about today. It also has characteristics such as high strength, oxidation resistance, high temperature resistance, good thermal shock resistance, small resistance coefficient, and easy precision machining. What are the advantages of high-purity graphite for everyone?High purity graphite is an ideal inorganic non-metallic material. High purity graphite has common advantages in the processing and manufacturing of structural casting molds, crucible pots for refining high purity metals, sintering molds, metal coating, and emission electron tubes. High purity graphite has corrosion resistance, with a uniform and fine matrix, which delays the corrosion degree of the product. In addition, it also has high thermal conductivity. The high content of fixed carbon ensures good thermal conductivity, shortens dissolution time, and significantly reduces energy consumption

2023-07-12

Graphite powder is a very widely used industrial material

Graphite manufacturer's graphite powder is a very widely used industrial material. It is obtained by crushing and grinding through high -purity graphite. After screening, the type of graphite powder is key basis. The more the number of sieve networks, the thinner the particle size, the higher the price. In the past, the technical strength of our country could not be achieved, and high -end graphite powder depends on imports. However, at this stage, Chinese manufacturing companies have introduced overseas cutting -edge powder and grinding machines to produce fine graphite powder around the world. EssenceGraphite manufacturers' various graphite powder, moisturizing graphite powder, conductive graphite powder, nano -technology graphite powder, high pure graphite powder, graphite sieve nets are: 150 mesh, 425 mesh, 1000 mesh, 3000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 6500 mesh, 12500 mesh, 15000 mesh, etc. The

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