HyboFOAM® CRH（Railway High-Speed）is closed-cell rigid foam plastic, based on PMI (polymethacrylimide) polymer, which does not contain any CFC's. HyboFOAM® CRH attributes a fine and unique cell size grade (0.1 to 0.3mm), with particular fireproof property.
The processing parameter is up to temperature of 150°C and maximum pressureup to 0.5 MPa.Structural components can be manufactured by the following cure methods; Autoclave, Vacuum bagged, RTM, VARTM, VARI，HP-RTM and others. Due to superb resin absorption property, engineer will seek an excellent balance between peel-off strength and light-weight requirement. To meet different dimension parts and geometry, it is very easy to shape HyboFOAM® CRH by thermo-shaping, bonding by various adhesive, and common CNC machine.
The application of HyboFOAM® RF is pretty wide. Basically, it is suitable for most of sandwich structure composites parts in vehicle/high speed railway, such as interiors and wall panel, as well as the ones require fireproof or fire volatile matters.
| 密度 Density | 压缩强度 Compression Strength | 拉伸强度 Tension Strength | 剪切强度 Shear Strength | 弹性模量 Elastic Modulus | 剪切模量 Shear Modulus | 热变形温度 Heat Distortion | 空隙直径 Cell Size | ||
| Grade | Kg/m3 (lb/ft3) | MPa (bf/in2) | MPa (bf/in2) | MPa (bf/in2) | MPa (bf/in2) | MPa (bf/in2) | ℃ | mm | |
| Spec. | ASTM D1622 | ASTM D1621 | ASTM D638 | ASTM C273 | ASTM D1621 | ASTM C273 | DIN53424 | GB/T 12811 | |
| CRH-52 | 52(3.24) | 0.7(102) | 1.1(160) | 0.6(87) | 50(7252) | 21(3046) | 190 | 0.1mm-0.3mm | |
| CRH-75 | 75(4.68) | 1.5(218) | 1.9(276) | 1.2(174) | 90(13053) | 35 (5076) | 190 | ||
| CRH-110 | 110(6.86) | 2.8(406) | 3.2(464) | 2.2(319) | 150(21756) | 52(7542) | 190 |
In order to better guide users, we have conducted extensive testing in various aspects, including:
· Moisture absorption performance
· Dielectric constant
· Compression creep
· High temperature mechanical properties
· Coefficient of thermal expansion
· Resin absorption rate
You can contact our sales team for more detailed test results.
Note: The above values are typical values of nominal density and cannot be used for product design and acceptance. Actual measured values may differ due to manufacturing deviations. Please contact our company's quality management department to confirm the material quality standards.
