Advantages and Disadvantages of Common Polystyrene Board 1. Molded polystyrene board (EPS)
Molded polystyrene foam board (EPS) is an insulation board made of expandable polystyrene beads containing volatile liquid foaming agent, which is heated and foamed and then heated in the mold. It has the characteristics of light weight, heat insulation, sound insulation and low temperature resistance.
advantage
Good thermal insulation performance;
Low unit weight has little impact on building load;
It has been used for a long time in China, and the process technology is mature;
The raw materials are easy to get and cheap;
Good durability and low temperature resistance.
shortcoming
Low melting point, easy to soften when the ambient temperature exceeds 75 ℃;
Long time exposure to ultraviolet radiation makes the material easy to age and present brittleness;
Thermoplastic material, melting and dripping when burning, easy to ignite other substances.
In addition, due to the simple processing technology of ordinary molded polystyrene board, it is easy to be imitated and produced by small workshops, and the quality is difficult to guarantee. The products transported to the construction site are often shoddy and shoddy. Compared with organic thermal insulation materials, the thermal conductivity is still on the high side.
2. Graphite modified polystyrene board (SEPS)
Graphite modified molded polystyrene board is a thermal insulation board made of imported graphite modified polystyrene as raw material and heated in the mold. The nano flake graphite particles dispersed in polystyrene have an infrared reflection effect, which can effectively reduce the long wave radiation and the thermal conductivity of the thermal insulation board.
advantage
The fire protection performance reaches Class B1, which is difficult for ordinary EPS to achieve;
The thermal insulation capacity is stronger, which is 30% higher than ordinary EPS;
The cost of equivalent effect is lower;
More ecological efficiency and less environmental burden.
shortcoming
Same as ordinary molded polystyrene board.
In addition, the raw material manufacturers of graphite modified polystyrene board are less than ordinary molded polystyrene board, and the quality reliability is high.