• 专利标题:   Microfoam composite material comprises polypropylene, cross-linked modified basalt fiber, nano silicon dioxide, maleic anhydride grafted polypropylene, ethylene-vinyl acetate copolymer, zinc stearate, flame retardant, antioxidant, and coupling agent.
  • 专利号:   CN115572436-A
  • 发明人:   HU C
  • 专利权人:   JIANGSU YUHAO NEW MATERIAL TECHNOLOGY CO
  • 国际专利分类:   C08J009/12, C08K003/36, C08K005/098, C08K005/544, C08K007/10, C08K009/02, C08K009/04, C08K009/06, C08L023/08, C08L023/12, C08L051/06, C08L081/06
  • 专利详细信息:   CN115572436-A 06 Jan 2023 C08L-023/12 202315 Chinese
  • 申请详细信息:   CN115572436-A CN11267592 17 Oct 2022
  • 优先权号:   CN11267592

▎ 摘  要

NOVELTY - Microfoam composite material comprises 90-130 pts. wt. polypropylene, 35-60 pts. wt. cross-linked modified basalt fiber, 15-30 pts. wt. nano silicon dioxide, 4-7 pts. wt. maleic anhydride grafted polypropylene, 4-6 pts. wt. ethylene-vinyl acetate copolymer, 2-6 pts. wt. zinc stearate, 2-5 pts. wt. flame retardant, 1-3 pts. wt. antioxidant, and 1-2 pts. wt. coupling agent. USE - The micro-foaming composite material is useful in automobile, building and packaging. ADVANTAGE - The micro-foaming composite material has good comprehensive properties, excellent mechanical properties, hardness and flame-retardant properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing microfoam composite material, comprising (i) air-drying the raw material to obtain dried raw material, (ii) extruding polypropylene, nano-silica, and maleic anhydride-grafted polypropylene with twin-screw extrusion granulator to obtain polypropylene mixed masterbatches, then adding the modified basalt fiber, coupling agent, ethylene-vinyl acetate copolymer and polypropylene mixed masterbatch into an internal mixer for melt blending to obtain composite masterbatch, and (iii) mixing composite masterbatch, zinc stearate, antioxidant, and flame retardant, placing in supercritical foaming extruder, and using nitrogen as foaming gas to obtain micro-foamed composite material; and Cross-linked modified basalt fiber