Foam plastic is a kind of polymer material formed by dispersing a large amount of gas micropores in solid plastic, which has the characteristics of light weight, heat insulation, sound absorption and shock absorption.
A kind of polymer material formed by dispersing a large amount of gas micropores in solid plastic has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and has better dielectric properties than matrix resin and has wide application. Almost all kinds of plastics can be made into foam, and foam molding has become an important field in plastic processing. Also called porous plastic. A resin made of resin as the main raw material with numerous micropores inside. Light weight, heat insulation, sound absorption, shockproof and corrosion resistant. There are soft and hard points. Foam is widely used as insulation, sound insulation, packaging materials and car shells. , microporous plastic, plastic containing numerous micropores as a whole.
A plastic with many tiny pores inside. It is prepared by a mechanical method (with air or carbon dioxide foamed while mechanically stirring) or by a chemical method (with a blowing agent). The foam is divided into two types: closed-cell type and open-hole type. The pores in the closed-cell type are isolated from each other and are floating; the pores in the open-hole type are connected to each other and have no floating property. It can be made of resin such as polystyrene, polyvinyl chloride or polyurethane. It can be used as insulation and sound insulation material and has a wide range of uses.
A kind of polymer material formed by dispersing a large amount of gas micropores in solid plastic has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and has better dielectric properties than matrix resin and has wide application. Almost all kinds of plastics can be made into foam, and foam molding has become an important field in plastic processing. The structural foam developed in the 1960s is characterized by core foaming, non-foaming of the cortex, external hard and toughness, high specific strength (strength per unit mass), low consumption, and increasingly extensive replacement of wood. Used in the construction and furniture industries.
The chemical or radiation cross-linked foaming technology of foamed polyolefins has been successful, resulting in a significant increase in the production of foamed plastics. The foamed plastic obtained by blending, filling, reinforcing and other modified plastics has better comprehensive performance and can meet the needs of various special purposes. For example, a glass fiber reinforced polyurethane foam obtained by reaction injection molding has been used as a structural component of an airplane, a car, a computer, etc., and a foam made of polybenzimidazole filled with hollow glass beads is light and resistant to high temperatures. , has been used in spacecraft.
This article is reproduced from Langfang Tongtai Packaging Materials Co., Ltd.: http://
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