Qingdao Hensen Graphite Co., Ltd.
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Expandable flake graphite flame-retardant refractory conductive graphite powder 80 mesh 100 mesh
Production
As a new functional carbon material, Expanded Graphite (EG) is a kind of loose porous wormlike substance obtained by natural Graphite scales through intercalation, water washing, drying and high temperature expansion. EG in addition to the natural graphite itself cold and heat resistance, corrosion resistance, self-lubrication and other excellent properties, but also has natural graphite without softness, compression resilience, adsorption, ecological environment coordination, biocompatibility, radiation resistance and other characteristics.
Brodie discovered expanded graphite in the early 1860s by heating natural graphite with chemical agents such as sulfuric and nitric acid, but its application did not begin until a hundred years later. Since then, many countries have launched the research and development of expanded graphite and made a significant breakthrough in scientific research.
Expanded graphite in high temperature can be instant volume expansion 150~300 times, from flake into vermicular shape, thus loose structure, porous and bending, surface area expansion, surface can improve, adsorption flake graphite force enhanced, vermicular graphite can be inserted between themselves, so as to increase its softness, resilience and plasticity.
| Grade Name | Mesh | Expansion Ratio (cc/g) | Purity (%) |
Moisture (%) |
PH | Sulfur (ppm) |
Onset Temp (°C) |
Application |
| HS555 | +50 | 250:1 | 95-97 | <1 | 6-9 | * | 160-180 | PU foam, Bituman. |
| HS855 | +50 | 250:1 | 98-99 | <1 | 6-9 | * | 160-180 | PU foam, Bituman. |
| HS955 | +50 | 250:1 | 99-99.5 | <1 | 6-9 | * | 160-180 | PU foam, Bituman, for application require least instruments damage. |
| HS085 | +80 | 250:1 | 90-95 | <1 | 6-9 | * | 160-180 | PU foam, EPS foam, XPS foam, sealing strip. |
| HS585 | +80 | 250:1 | 95-97 | <1 | 6-9 | * | 160-180 | PU foam, EPS foam, XPS foam, sealing strip. |
| HS055 | +50 | 250:1 | 90-95 | <1 | 6-9 | * | 160-180 |
Q: Where is your factory located? How can I visit there?
A: Our factory is located in Shandong Province,China which has rich coal.All our clients, from home or
abroad, are warmly welcome to visit us.
Q: How can I get the sample?
A: We’d like to supply samples free of charge, but you need pay for the freight fees.
Q: How does your factory do regarding quality control?
A: Quality is priority. My company always attaches great importance to quality controlling from the very beginning to the very end.
Q: How can I pay you?
A: After you confirm our PI, we will request you to pay. T/T is the most usual ways we are using.
Q: How do you check all the goods in the production line?
A: We have spot inspection and finished product inspection. We check the goods when they go into next step production procedure.