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ISSN : 1225-0112(Print)
ISSN : 2288-4505(Online)
Applied Chemistry for Engineering Vol.10 No.1 pp.46-50
DOI :

Research Papers : The Flame Retardance and Mechanical Properties of Wood Powder - filled PP Composites

Won Keun Son

Abstract

Effects of (NH4)2HPO4and boron compounds (Na2B4O7: H3BO3= 5 : 1 ratio) on the flame retarding characteristics of the surface modified wood powder-filled polypropylene composites were studied experimentally. The mechanical properties of ;m-phenylene dimaleimide(PDMI)-modified polypropylene composite were also compared with those of unmodified one. The flame retardance of (NH4)2HPO4-modified wood powder composites was more improved than that of boron compounds-modified one. The impact strength of composites increased and the tensile strength of those decreased progressively with an increase of wood powder loading. The mechanical properties of modified polypropylene composites are more improved than those of unmodified one. The tensile strength also increased marginally with increasing the concentration of flame retardants, yielding a maximum when the concentration of flame retardant is 25.0 wt%. And the tensile strength of the composite was increased up to 16 wt% with increasing concentration of PDMI.

연구논문 : 목분-PP 복합체의 난연성과 기계적 특성

손원근,황택성

초록

본 연구에서는 표면이 개질된 목분으로 강화된 PP수지 복합체의 (NH4)2HPO4과 boron 혼합물(Na2B4O7: H3BO3= 5 : 1 ratio)에 대한 난연특성에 관해 알아보았다. 또한 m-phenylene dimaleimide(PDMI)로 개질된 PP수지와 비개질된 PP수지 복합체의 기계적 특성을 비교하였다. (NH4)2HPO4로 개질된 복합체의 난연성은 boron 혼합물로 개질된 복합체의 난연성보다 우수하였다. 복합체의 충격강도는 목분의 함량이 증가함에 따라 증가되었고, 인장강도는 감소하였다. 개질된 PP수지 복합체의 기계적 강도는 비개질된 수지의 복합체보다 개선되었다. 또한 난연제의 농도가 증가함에 따라 인장강도는 점진적으로 증가되었고, 25 wt%에서 최대값을 나타내었으며, PDMI의 함량이 증가함에 따라 목분-PP 복합체의인장강도는 16 wt%까지 증가되었다.

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