| abstract |
The invention relates to a preparation method of an integrated multi-layered broadband high-wave transparent microporous foam material, and belongs to the technical field of communication equipment materials. Steps: fully mix polyolefin, modifier and anti-aging agent to extrude the sheet using a three-layer co-extrusion screw extruder; place the obtained sheet in the cavity of the molding foaming machine, and place the upper and lower parts of the cavity. A release film is attached to the surface, filled with supercritical fluid, and the mold is opened to release pressure to obtain a wave-transmitting material. In the preparation process, a three-layer co-extrusion screw was used to extrude a sheet with a three-layer structure, and then it was foamed through a supercritical foaming cavity with a release film to obtain a dense and small foaming ratio on both sides. , The multi-layer wave-transmitting material with large internal foaming ratio realizes the integrated wide-band high-wave-transmitting preparation of the material. |