화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2017년 봄 (04/26 ~ 04/28, ICC 제주)
권호 23권 1호, p.92
발표분야 고분자
제목 Effect of nano ZnO on thermal aging of natural rubber vulcanizates
초록 The focus of the study was to investigate the effect of thermal aging upon the crosslink-density, structure and mechanical properties of natural rubber (NR) vulcanizates with nano ZnO. The thermal aging was conducted at 80℃ for 8 days. The effect of thermal aging was measured from the changes in the crosslink-density and structure of NR vulcanizates as a function of time. The degree of crosslink density was increased with increasing time for 4 days, but it was decreased for time aging from 6 to 8 days. The percentage of polysulfidic crosslinks was decreased with aging time, while mono- and di-sulfide crosslinks were increased. The change in the degree and the percentage of NR vulcanizates filled with nano ZnO was very lower than that with micro ZnO. The changes in mechanical properties were also monitored and were similar to the changes in the crosslinking behavior. It was found that nano ZnO provide high resistance against thermal aging of NR vulcanizate.
저자 이용환, 이정훈, 윤선규, 조미숙, 이영관
소속 성균관대
키워드 고분자합성; 고분자물성; 고분자가공
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