폴리우레탄-실리카 복합 발포체의 합성 및 물성에 관한 연구

강현석; 김상범; Hyeon Seok Kang; Sang bum Kim

Applied Chemistry for Engineering, Vol.31, No.1, 30-35, February, 2020

DOI10.14478/ace.2019.1106 Export Citation

폴리우레탄-실리카 복합 발포체의 합성 및 물성에 관한 연구

Synthesis and Characterization of Polyurethane-silica Composite Foam

강현석, 김상범 ^†

경기대학교 화학공학과

Hyeon Seok Kang, and Sang bum Kim^†

Department of Chemical Engineering, Kyonggi Unuversity, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Korea

E-mail:

초록

본 연구에서는 폴리우레탄-실리카 복합 발포체를 합성하여 복합 발포체의 단열 특성 및 기계적 물성을 분석하였다. 폴리우레탄-실리카 복합 발포체를 합성하기 위해 폴리에스테르-실리카 복합 폴리올을 합성하였다. 폴리에스테르-실리카 복합 폴리올은 실리카 졸과 모노머 상태의 다이카복실산(dicarboxylic acid), 글리콜(glycol)과의 중합 반응을 통해 합성하였다. 합성된 복합 폴리올을 이용하여 폴리우레탄-실리카 복합 발포체를 합성하여 물성을 분석하였다. 폴리우레탄-실리카 복합 발포체의 열전도도는 HPUF0, HPUF1, HPUF3, HPUF5 모두 큰 차이가 없는 것을 확인하였다. 압축강도는 실리카 함량이 증가함에 따라 HPUF0보다 증가하였으며 HPUF0보다 HPUF5가 약 25% 정도 기계적 물성이 향상되는 것을 확인하였다.

In this study, polyurethane-silica composite foams were synthesized to analyze thermal insulation characteristics and mechanical properties. In order to synthesize polyurethane-silica composite foams, polyester-silica composite polyols were first synthesized via a polymerization reaction with silica sol, dicarboxylic acid and glycol in monomer state. Physical properties of polyurethane-silica composite foams synthesized using the composite polyols were analyzed. From the thermal conductivity analysis, no significant differences among HPUF0, HPUF1, HPUF3 and HPUF5 were found. The compressive strength of polyurethane-silica composite foams increased as the silica content increased. The mechanical property of HPUF5 was also about 25% higher than that of HPUF0.

Keywords:Silica sol;Polyurethane;Compressive strength

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Tu YC, Kiatsimkul P, Suppes G, Hsieh FH, J. Appl. Polym. Sci., 105(2), 453 (2007)
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