Foam material refers to the foam material material that can form pores inside the object, such as the manufacture of foam plastic, foam rubber, foam resin, foam food (steamed bread, buns, bread, cakes), etc. Foaming materials can be divided into soft foam materials, structural foam materials, chemical foam materials, physical foaming materials, active foaming materials and other different types, and different types of foaming materials have different characteristics.
Soft foaming materials are made of plastic (PE, EVA, etc.), rubber (SBR, CR, etc.) and other raw materials, plus catalysts, foam stabilizers, foaming agents and other auxiliary materials, through physical foaming or cross-linked foaming, so that a large number of fine foam appears in plastics and rubber, the volume increases, the density decreases, the soft foaming material is light in weight, good in softness, with buffering, sound absorption, shock absorption, insulation, filtration and other functions, widely used in electronics, home appliances, automobiles, sports and leisure industries.
Structural foam material Structural foam material is based on plastic (PVC, PET, etc.), etc., through the aromatic amide polymerization network through the foaming material, the density is very low, but it has high strength, suitable for high-end fields requiring light materials and high strength, mainly used in wind power generation, rail transit, yachts, aerospace, building energy conservation and other industries.
Chemical foaming materials are compounds that can release gases such as carbon dioxide and nitrogen after thermal decomposition, and form dispersed and relatively uniform pores in the composition of plastics, rubber, resin, and food. It can be divided into organic foaming materials and inorganic foaming materials.