A Study on the Mechanical and Combustion Characteristics According to Fiber Reinforcements Weight Fraction of FRTP

Kim, Kyoung-Jin; Eom, Sang-Yong; Kim, Ki-Hwan

doi:2019.33.3.21

Fire Sci. Eng. > Volume 33(3); 2019 > Article

Research Paper

Fire Science and Engineering 2019;33(3):21-28.
DOI: https://doi.org/10.7731/KIFSE.2019.33.3.021 Published online June 30, 2019.

섬유강화재 함유율에 따른 FRTP의 기계적 특성 및 연소특성에 관한 연구

김경진¹, 엄상용², 김기환³

¹(주)정평이앤씨 대표이사
²LG사이언스파크 안전환경센터장
³한국소방안전원 정책연구소 연구원

A Study on the Mechanical and Combustion Characteristics According to Fiber Reinforcements Weight Fraction of FRTP

Kyoung-Jin Kim¹, Sang-Yong Eom², Ki-Hwan Kim³

¹CEO, Justice and Peace Engineering & Consulting
²EHS Center Manager, LG Sciencepark
³Researcher, Policy Research Institute, Korea Fire Safety Institute

Correspondence: Sang-Yong Eom, Tel: +82-2-6987-1322, Fax: +82-504-044-7375,
Email: eomsy73@naver.com

Received: 10 October 2018 • Revised: 13 March 2019 • Accepted: 21 May 2019

요약

본 연구에서는 섬유강화 열가소성 플라스틱 복합재료(Fiber Reinforced thermo plastics, FRTP)의 기계적 특성 및 화재 위험성 예측을 위한 연소특성을 평가하였다. 폴리카보네이트와 나일론에 섬유강화재로 유리섬유와 탄소섬유를 각각 0~40 wt% 혼합하여 특성변화를 실험한 결과, 섬유강화재의 함유율이 증가할수록 비강도와 열변형 온도가 증가하였고 난연성은 유리섬유 함유율이 30 wt% 이상인 경우 V-0 등급을 보였다. 연소특성의 경우 섬유강화재의 함유율이 증가함에 따라 착화시간도 비례하여 증가하였으며, 최대 열방출율은 섬유강화재를 40 wt% 함유 시 함유하지 않았을 때보다 폴리카보네이트는 약 51%, 나일론은 약 24% 수준으로 낮아졌다. CO 발생율은 일정시간까지 감소하다가 증가하는 경향을 보이며, 이는 시간이 지남에 따라 불완전연소에 의한 것으로 판단된다. CO₂ 발생율은 열방출율과 매우 유사한 경향을 보이며, 최대 CO₂ 발생율은 섬유강화재를 40 wt% 함유 시 함유하지 않았을 때보다 폴리카보네이트는 약 50%, 나일론은 약 28% 수준으로 낮아졌다.

Abstract

To examine the mechanical and combustion characteristics of FRTP, either polycarbonate or nylon were used as a matrix, and either glass fiber or carbon fiber were used as the fiber reinforcement. The fiber reinforcement content was differentiated at 0~40 wt%. The tensile strength and heat distortion temperature increased with increasing reinforcement content. When the fiber reinforcement content was above 30 wt%, the flammability rating showed V-0. As the fiber reinforcement content increased from 0 to 40 wt%, the peak heat release rate of polycarbonate decreased by approximately 51% and that of nylon decreased by approximately 24%. The rate of CO generation decreased for a period of time, and then increased. This appears to have resulted from incomplete combustion. The rate of CO₂ generation shows a similar tendency with the heat release rate. As fiber reinforcement content levels increased from 0 to 40 wt%, the CO₂ peak rate of polycarbonate generation decreased by approximately 50% and that of nylon decreased by 28%.

Key Words: Fiber reinforced thermo plastic (FRTP), Cone calorimeter, Heat release rate, Total heat release