1. rubber molding, after pressing, the elastic body is within the cohesion can not be eliminated, the molding die, often have a very unstable contraction (rubber shrinkage due to rubber vary), required after a period of time, and can be stable. Therefore, when a rubber product design at the beginning, regardless of formula or mold, it is necessary to carefully calculate the coordination, if not, it is easy to produce product size instability, resulting in lower quality products.
The 2. is a rubber elastic body of thermosetting plastic is hot, hot to cold setting. Rubber due to different types of sulfide species, its molding and curing temperature range is also a considerable gap, and even can be affected by climate change, indoor temperature and humidity affected. Therefore, the production conditions of rubber products need to be adjusted at any time. If not, the quality of the products may be different.
3. rubber 9th closed structure can effectively prevent thermal conduction.
4., the thermal conductivity, at 0 degrees C, not more than 0.034W/m. K.
5., the surface heat release coefficient is high, reaching 9W/mk
6. has excellent resistance to water vapor permeability and moisture resistance of more than 5000 mu of "built" the water vapor barrier, the insulation board is the insulation layer is moisture-proof layer.
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