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Structural characteristics of PMI foam

Structural characteristics of PMI foam

Update:07-01-2022
Summary:PMI foam is a cross-linked rigid structure foam material wit...

PMI foam is a cross-linked rigid structure foam material with a 100% closed cell structure. Its uniform cross-linked cell wall structure can give it outstanding structural stability and excellent mechanical properties. The main molecular chain is a chain, and the side chain of the molecular side chain contains an imide structure foam, which can be manufactured by a variety of methods.

 

The foam is a heat-resistant foam with high strength and rigidity at present. It can meet the requirements of medium and high temperature, high pressure curing and prepreg process at 180-240°C. It has good compatibility with various types of resins, and is suitable for use as a core material in high-performance sandwich structures, and can replace honeycomb structures.

 

 

It is isotropic, easy to be machined into various complex cross-sectional shapes, and does not contain any Freon. It is an environmentally friendly material, and its fire resistance reaches FAR 25.853 and AITM and other relevant standards. It represents the Z of high-performance polymer structural foam. New development areas. At present, PMI foam has been widely used in aerospace, aviation, military industry, ships, automobiles, railway locomotive manufacturing, radars, antennas and other fields.

 

PMI foam has properties: 100% closed-cell structure and isotropic; good heat resistance, heat distortion temperature is 180~240℃; excellent mechanical properties, high specific strength, high specific modulus, in various foams Medium is high; surface contact has good compressive creep properties.

 

High temperature autoclave molding (180~230℃, 0.5~0.7MPa), vacuum package heating molding (180~230℃, several Pa), and melt injection molding can be used to realize the disposable foam interlayer and prepreg Co-curing; free of freon and halogen; good fire resistance, non-toxic, low smoke; good compatibility with various resin systems.