516 results about "Plastic compound" patented technology

A preparation method for A-level fire-protection energy-saving rubber-plastic thermal-insulating compound foam comprises the following steps: adding polypropylene powder resin, methyl vinyl base silicone rubber, ceramic powder, a fire retardant, glass fiber powder, an antioxidant, white carbon black and polyethylene wax in a high-speed mixer for kneading at a normal temperature, discharging the kneaded materials to an internal mixer so as to obtain material groups through internal mixing, discharging the material groups to a single-screw extrusion pelletizer so as to obtain a basic material A through melting, plasticizing and granulation; adding low-density polyethylene resin in a high mixing machine, then adding an AC blowing agent, talc powder, a lubricating agent and zinc stearate for kneading at the normal temperature, and then discharging the kneaded materials into a single-screw extruder so as to obtain a foaming masterbatch B through granulation; adding the basic material A, the foaming masterbatch B and the polyethylene wax into the high-speed mixer for kneading at the normal temperature, and then discharging the kneaded materials into the single-screw extruder so as to obtain sheets through extruding; carrying out irradiation crosslinking and foaming; grooving on the surface of the prepared foam; and embedding fire-protection filler in the grooves of the foam, immersing in a fire retardant solution and baking so as to obtain the compound building foam.