에폭시화 천연고무의 물성 향상을 위한 전분과 이황화몰리브덴 첨가에 관한 연구

진 욱; 리시앙수; 조을룡; Xu Chen; Xiang Xu Li; Ur Ryong Cho

Polymer(Korea), Vol.42, No.6, 1085-1090, November, 2018

DOI10.7317/pk.2018.42.6.1085 Export Citation

에폭시화 천연고무의 물성 향상을 위한 전분과 이황화몰리브덴 첨가에 관한 연구

Study on Improvement of Properties for Epoxidized Natural Rubber by Addition of Starch and Molybdenum Disulfide

진 욱¹, 리시앙수¹, 조을룡^{1, 2, †}

¹한국기술교육대학교 에너지 신소재, 화학공학부
²친환경고성능화학소재연구소

Xu Chen¹, Xiang Xu Li¹, and Ur Ryong Cho^{1, 2, †}

¹School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Cheonan, Chungnam 31253, Korea
²Research Center of Eco-friendly & High Performance Chemical Materials, Cheonan, Chungnam 31253, Korea

E-mail:

초록

Epoxidized natural rubber(ENR)에 전분과 이황화몰리브덴이 다양한 비율로 혼합되었다. 제조된 복합체의 경화 물성과 동적점탄성은 고무 가공 분석기로 측정되었고, 시료의 형태학적 구조는 SEM으로 확인되었다. 기계적 물성, 열분해성, 인장강도, 경도, 마찰계수, 내마모성, 팽윤율도 물성 향상을 확인하기 위하여 조사되었다. 모든 실험결과에서, 충전제-충전제 상호작용은 전분 함량이 증가함에 따라 향상되었음을 알 수 있었다. 그리고 기계적 물성도 따라 향상되었다. 그 원인은 전분과 ENR 고무 사이에 수소 결합이라는 더 나은 결합의 형성이었다. 또한 이황화몰 리브덴의 첨가에 따라, 고무복합에의 윤활성이 증가되어 마찰계수와 내마모성이 개선됨을 알 수 있었다.

Epoxidized natural rubber (ENR) was filled with starch and molybdenum disulfide (MoS2) on different ratios. The curing properties and viscoelastic behavior of the composites was tested by rubber processing analyzer, and the morphological structure of the composites samples were characterized by SEM. The mechanical properties, the thermal decomposition behavior, tensile strength, hardness value, friction coefficient, abrasion resistance and swelling ratio were investigated to verify the property improvement of the ENR composites. From the results of all the tests, it can be found that the intermolecular interaction increased with increasing starch content. And the mechanical properties also increased. The possible reason may be the starch could provide the better combination with ENR rubber matrix due to the hydrogen bonding. And with the addition of molybdenum disulfide, the friction coefficient and abrasion resistance properties were improved due to the lubrication of molybdenum disulfide.

Keywords:epoxidized natural rubber;starch;molybdenum disulfide;mechanical properties

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