Plastic foam to improve the shock, thermal insulation performance

Foam plastics is a kind of contains numerous microporous plastic products. Light is an important characteristic of foam plastic, generally the relative density of the foam injection molding processing products is 0. 9 - 1. 4, and the relative density of foamed plastics is of foamed plastics, a fraction of a small percentage even. Heat insulation, foam plastic products within the pores which can effectively prevent or delay the heat transfer, so as to achieve the purpose of insulation. Excellent thermal insulation of PU and PF foam thermal conductivity is only 0. 01 - 0. 03W。

shockproof, foam plastic products received shocks, bubble hole in the gas can be compressed by stagnation and etc make the impact energy dissipation, passed at the rate of smaller and gradually ending impact load, so as to achieve the aim of shock. Sound insulation, plastic foam insulation ability is mainly from two aspects: one is by the viscous flow of the gas porosity and compression, the sound waves with the above said rushed as degradation of skills, second, by increasing the object itself rigidity to eliminate by the acoustic shock caused by resonance and noise. High resilience, said the main soft polyurethane foam, its capacity can reach more than 85%. Low into nature, said the foam can reduce need resin with feed rate per unit volume.

common foam, foam injection molding products processing internal and surface the same degree, foam structure, internal and surface foaming degree, said only contains a small amount of pores or contains no pores. Foam can replace wood structure, therefore also called synthetic wood. Hole foam is said porosity interconnection products within each type of foam plastics, open hole foam can be used as a filtration material, closed-cell foam, mean products within different porosity are separated type of foam plastics, closed-cell foam for not bibulous, can be used as a floating materials.

foam is mainly used in: rigid foam, closed-cell rigid foam is mainly used for heat insulation, insulation, structural foam and floating material, etc. , opening rigid foam as long as is used for insulation and filter and so on. Soft foam plastic, the obturator soft foam plastic is mainly used for heat insulation, insulation, packaging, air cushion, floating and decoration material and so on.

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