Polymethacrylimide (PMI) foam is a cross-linked rigid structural 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. PMI foam is a heat-resistant foam (180~240℃) with excellent strength and stiffness properties, which can meet the requirements of medium-high temperature, high-pressure curing and prepreg processes. It has good compatibility with various types of resins and is suitable for use as a core material in high-performance sandwich structures. It does not contain any Freon and is an environmentally friendly material. Its fire resistance reaches relevant standards such as FAR 25.853 and AITM, which represent the latest development field of high-performance polymer structural foam.
Performances of PMI Foam Board
- 100% closed cell structure and isotropic.
- Good heat resistance, heat distortion temperature of 180～240°C.
- Excellent mechanical properties, high specific strength, high specific modulus, and better performance in various foams.
- Does not contain Freon and halogen.
- Good fire performance, non-toxic, low smoke.
- Good compatibility with various resin systems.
- Excellent dielectric properties: dielectric constant 1.05 ~ 1.13, loss angle tangent in (1 ~ 18) × 10-3 in the frequency range of 2 ~ 26 GHz, its dielectric constant and dielectric loss changes are very small.
Product Size (Customization)
Performance parameters
Application industries of PMI Foam
- Applications in aerospace
PMI foam can withstand the 180°C curing temperature and 10 bar curing pressure (depending on density) commonly used in the aerospace industry without significant creep. The material’s good high-temperature resistance ensures that the curing pressure remains stable even in the presence of exothermic reactions, thus ensuring better product quality. Additionally, this helps reduce waste and stabilize processes, ensuring efficient, streamlined component production.
- Application in wind power field
PMI core materials can provide lightweight turbine blades for wind turbines and increase power generation efficiency.
- Application in box body manufacturing
PMI can replace the existing box core materials (XPS/PET/PVC/PU, etc.) because it has the characteristics of thermal insulation, high strength, lightweight, waterproof, flame retardant, and high temperature resistance. It is used in the manufacture of boxes with high requirements, such as high-end RVs, refrigerated trucks, mobile homes, etc.
- Applications in the medical field
High-quality X-ray and CT bed boards made of PMI structural core materials can obtain high-resolution X-ray images with low radiation. Whether it is an X-ray bed, CT bed or X-ray mammography board for diagnosis, emergency stretcher and OR bed, or a specialized treatment table and accessories for treatment, PMI foam board is an ideal choice as a structural core material.
- Applications in shipbuilding
Composites play an increasingly important role in the shipbuilding industry. PMI materials are not only lightweight but also enable ships to have greater payloads and faster speeds. Significant fuel savings can be achieved by using composite sandwich structures in deck and bulkhead structures. It significantly reduces the weight of the mast and, as part of the composite bulkhead, fits snugly into the hot air ductwork.
- Applications in the field of sports
PMI foam can be combined with all common plastics to form extremely durable composites. These materials are ideal for making lightweight, durable sports equipment such as cross-country and alpine skis, bicycle racing wheels, tennis rackets, snowboards and surfboards.