Core foam can be divided into rigid foam, soft foam and […]
Core foam can be divided into rigid foam, soft foam and semi-rigid (or semi-soft) foam. Core foam plastic is also called porous plastic, a plastic with numerous micropores inside made of resin as the main raw material. It is widely used as heat insulation, sound insulation, packaging materials and car and ship shells. Core foam plastics can be divided into soft, rigid and semi-rigid foams in between according to their flexibility.
Rigid foamed plastics can be used as thermal insulation materials and sound insulation materials, thermal insulation materials for pipes and containers, floating materials and shock-absorbing packaging materials. Soft foam plastic is mainly used as cushion material, foam artificial leather and so on. Commonly used foam plastics are polyurethane, polystyrene, polyvinyl chloride, polyethylene, phenolic foam and so on. Core foam plastic is also called porous plastic, a plastic with numerous micropores inside made of resin as the main raw material. Lightweight, heat-insulating, sound-absorbing, shock-proof and corrosion-resistant. There are soft and hard points. It is widely used as heat insulation, sound insulation, packaging materials and car and ship shells.
Compared with pure plastic, core foam plastic has low density, light weight and high specific strength. Its strength increases with the increase of density. It has the ability to absorb impact load, excellent cushioning and shock absorption performance, sound insulation and sound absorption performance. Low conductivity, good heat insulation performance, excellent electrical insulation performance, corrosion resistance and mildew resistance. Flexible foam has excellent elasticity and other properties.
Plastic with many tiny pores. It is made by mechanical method (inject air or carbon dioxide to make foam while performing mechanical stirring) or chemical method (add foaming agent). There are two types: closed cell type and open cell type. The pores in the closed-cell type are isolated from each other and have floatability; the pores in the open-cell type are connected to each other and have no floatability. It can be made of polystyrene, polyvinyl chloride, polyurethane and other resins. It can be used as heat insulation and sound insulation material and has a wide range of uses.