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Graphite polystyrene board is commonly known as "black foam" or "blackboard", referred to as GEPS, its full name for the B1-level graphite molded Expanded polystyrene board, it is widely used in building, wall insulation system, especially is used in the exterior insulation project which the polystyrene board need reach B1-level fire safety requirements
1, graphite polystyrene board with good fire performance, combustion performance can reach B1 level flame retardant;
2, Insulation capacity is stronger, it is a classic insulation material foamed polystyrene further refined by chemical products, thermal conductivity ≤ 0.032, its thermal insulation capacity is 30% higher than ordinary EPS, can improve energy efficiency and reduce carbon dioxide emission.
3, the same effect of lower cost, cost-effective graphite polystyrene board, with outstanding thermal insulation ability, especially in the low density, it can be clearly demonstrated, in the case of the same effect, than other fire-resistant insulation system can save more cost.
4, Simple construction, good system integrity, graphite polystyrene board insulation system construction and EPS thin plastering exterior insulation system construction methods are consistent, higher system integrity and durability.
SEPS graphite polystyrene board performance indicators> |
Item |
Unit |
Test Requirements |
Test result |
surface density |
Kg/m3 |
≥20.0 |
22.8 |
compression strength |
Kpa |
≥100 |
134 |
Thermal conductivity |
% |
≤0.041 |
0.031 |
Dimensional stability |
w/m.k |
≤3 |
0.3 |
Melting property (fracture bending load) |
N |
≥25 |
35 |
Water absorption |
% |
≤4 |
3.7 |
Water vapor transmission coefficient |
Ng/pa.m.s |
≤4.5 |
3.8 |
Combustion performance (oxygen index) |
% |
≥30 |
33 |
Graphite Polystyrene board Data
Test Item |
Test requirement |
Test result |
combustion performance
fire-retardant level Flat building materials and product |
Single Burning |
Rate of combustion growth W/s |
≤250 |
242 |
Flame horizontal spread length. |
Not reaching the edge wing of the sample |
Not reaching the edge wing of the sample |
Total heat release in 600s |
≤ 15 |
13 |
flammability |
Combustion length |
Flame height in 60s≤ 150mm |
Flame height in 60s
< 150mm |
Combustion phenomena |
no flaming droplets in 60s |
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oxygen index% |
≥30 |
31.5 |
performance density kg/m3 |
≥20 |
22.4 |
appearance quality |
color |
Uniform， flame retardant type should be mixed with colored particles to show the difference |
uniform color
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appearance |
Surface smooth, No obvious shrinkage deformation and expansion deformation |
Surface smooth, No obvious shrinkage deformation and expansion deformation |
welding |
Welding good |
Welding good |
impurity |
No obvious oil or impurities. |
No obvious oil or impurities. |
Dimensional stability % |
≤3 |
1.1 |
compression strength kpa |
≥100 |
115 |
Thermal conductivity W / (m.K) |
≤0.041 |
0.032 |
Water Vapor Permeability |
≤4.5 |
3.7 |
water absorption |
≤4 |
1.9 |
Bonding（Fracture bending load） |
≥25 |
28 |
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| Contact Us |
| Beijing Wu Zhou Foam Plastics Co., Ltd |
| Office: No. 1005,Building B2,Hong Kun I-Cloud Times , Ke Chuang 12th street, Da Xing District, Beijing ,China |
| Email: carsonzhang@bjwzsl.com.cn |
| Tel: +86-13263335347 |
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| Advantage |
1. Near 20 years’ experience in foam insulation
2. Manufacture, research and development
3. Professional, automated production, international cutting-edge technology
4. Product used in National project, such like Bird's Nest, Water Cube
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Customer success, Quality is life,Health and Creativity
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