The market share of high-performance core material foam is gradually increasing, including transportation, electronics, health care, industrial equipment, consumer equipment, construction, boots and sports products. The main reason is the lighter weight of this plastic and the cushioning properties of traditional foam, coupled with high strength, heat and flame retardant properties, damping properties, chemical resistance and biological inertness.
The core material foam high-performance foaming polymers include polyurethane, polyolefin, siloxane, fluoropolymer, benzene polymer and other engineering polymers. Some of these materials have superior mechanical properties, heat resistance and chemical stability. Other materials use molecular chain chemical modification, cross-linking treatment or add special fillers to improve the performance of the material. The core material foam high-performance foam material is fired by standard methods, such as the use of chemical foaming agents and physical foaming agents.
High-performance foam materials are more competitive than non-foamed plastics, metals, natural or synthetic rubbers. Foam materials can be applied to gaskets, sealing products, heat shielding, impact and vibration gaskets, auxiliary equipment and EMI/RFI electromagnetic shielding devices. In fact, there is no accurate definition of high-performance foaming materials, so it is difficult to estimate the market share of its products.
After proper high temperature treatment, the composite material can withstand high temperature curing process requirements, so that foam has been widely used in the aviation field. Medium-density foam has good compressive creep properties and can be autoclaved at a temperature of 120oC -180oC and a pressure of 0.3-0.5MPa. PMI foam can meet the creep performance requirements of the usual prepreg curing process, and can realize the co-curing of the sandwich structure. As aerospace material, PMI foam is a uniform rigid closed-cell foam with basically the same pore size.