Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Phyllite as a New Flame Retardant Synergist for ABS Resin Containing Bromine Flame Retardant

브롬계 난연제를 사용한 ABS 수지에 대한 신규 난연 상승작용제로시의 천매암

  • Kim, Seog-Jun (Department of Nano & Chemical Engineering, Kunsan National University)
  • 김석준 (군산대 공대 신소재.나노화학공학부 나노화학공학전공)
  • Published : 2006.09.30
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Abstract

Flame retardant synergism of phyllite was studied in ABS resins containing brominated flame retardant(tetrabromobisphenol A(TBBA) or brominated epoxy oligomer(BEO)) and antimony trioxide($Sb_2O_3)$. Talc was used for the comparison purpose. ABS compounds were manufactured by a twin-screw co-rotating extruder and subsequently injection molded into several specimen for mechanical and thermal properties. Flame retardancy of ABS compounds measured by UL 94 vertical test with 1.6 mm thick bar specimen was enhanced by the replacement of antimony trioxide into phyllite or talc in the range of 12.5%(0.5 wt%) to 37.5%(1.5 wt%). Phyllite showed better synergistic effect comparing with talc especially for BEO. Only phyllite enhanced the flowability of ABS compounds. Notched Izod impact strength decreased with the proportion of phyllite or talc content. Phyllite could replace the antimony trioxide up to the content of 25%(1 wt%) to give better flame retardancy and flowability without darkening problem.

브롬계 난연제인 테트라비스페놀 A 또는 브롬화 에폭시 올리고머(BEO) 및 산화안티몬을 포함하는 ABS 컴파운드에서 천매암의 난연 상승효과를 연구하였다. 탈크는 비교목적으로 사용되었다. ABS 컴파운드는 동일방향으로 회전하는 이축압출기를 통해 제조되었고 사출기를 이용하여 기계적 및 열적 성질을 측정하기 위한 시편으로 만들었다. ABS 컴파운드의 난연성을 1.6 mm 두께의 막대시편을 이용한 UL 94 수직 시험으로 알아 본 바 천매암 및 탈크는 산화안티몬을 12.5%(0.5 wt%)에서 37.5%(1.5 wt%) 대체하였을 때 모두 난연 상승효과를 보였다. 특히 BEO를 사용하였을 때 천매암이 탈크보다 우수한 난연 상승효과를 보였다. 천매암에서만 ABS 컴파운드의 유동성 증가가 나타났다. 노치드 Izod 충격강도는 천매암 또는 탈크의 함량에 비례하여 감소하였다. 천매암은 색상문제가 없는 조건에서 산화안티몬을 25%(1 wt%)까지 대체 할 수 있고 우수한 난연성과 유동성을 부여할 수 있다.

Keywords

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