Flame Retardancy and Mechanical Property of Recycled Polyolefinic Plastic Composites with Hybrid fillers

폴리올레핀계 폐플라스틱/복합filler 성형체의 난연성 및 기계적 물성 연구

  • 강영구 (호서대학교 환경안전공학부 안전시스템공학과) ;
  • 송종혁 (호서대학교 벤처전문대학원)
  • Published : 2003.06.01

Abstract

Flame retardancy and mechanical properties of recycled polyolefinic plastics/inorganic filler composite systems were investigated by using several inorganic flame retardants such as magnesium hydroxide and slag powder generated electro arc furnace Compatibilizer user each maleic anhydride functionalized polyethylene (PE-g-MAH) and polypropylene(PP-g-MAH) or used mixture of these. The effect of polymeric compatibilizers on the properties of composites was studied by tensile and impact test, differential scanning calorimetry, in the changed fracture mechanism. The improved adhesion was particularly reflected in the mechanical properties. The flame retardancy of composites was examined by measuring limiting oxygen index(LOI, ASTM D2863), smoke density(ASTM D2843) and vertical burning test(UL94). Regarding the flame retardant effect, the EAF slag powder is behaving as synergists as they are only active in the presence of magnesium hydroxide.

Keywords

flame retardancy;recycled plastic;polyethylene;polypropylene;polymer blends;compatibilizer;limiting oxygen index;smoke density

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