화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.40, No.3, 446-451, May, 2016
DOI10.7317/pk.2016.40.3.446  Export Citation
응고 방법에 따른 천연고무의 동적특성
Characterization of the Dynamic Properties of Natural Rubbers Coagulated Using Different Methods
, , , , , , 정경호†
  • 수원대학교 신소재공학과
Tianming Gao1, 2, Ruihong Xie1, 3, Linghong Zhang4, Puwang Li1, 3, Hongxing Gui1, 3, Maofang Huang1, 3, and Kyungho Chung2, †
  • 1Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agriculture Science, Zhanjiang 524001, China
  • 2Department of Polymer Engineering, The University of Suwon, Hwaseong-Si, Gyeonggi-Do 445743, Korea
  • 3, China
  • 4Rubber Research Institute, Chinese Academy of Tropical Agriculture Science, Danzhou 571737, China
E-mail:
초록
천연고무 라텍스를 아세트산을 사용한 응고(A-NR), 자연 응고(N-NR) 및 미생물을 사용한 응고(M-NR) 등 다른 방법들로 응고하였고, 이들의 가교도, 가교특성, 동적특성 및 열축적 특성 등을 조사하였다. 결과에 따르면 MNR의 경우 가장 높은 가교도와 가장 빠른 경화속도를 나타냈으며, A-NR은 정 반대인 가장 낮은 가교도와 가장 느린 경화속도를 나타내었다. 이들 고무의 동적특성은 rubber process analyzer(RPA), dynamic mechanical analyzer(DMA) 및 압축 열축적 분석방법 등을 이용하여 측정하였다. 동적특성은 고무의 가교도와 매우 밀접한 관계가 있었음을 알 수 있었고, 손실계수는 M-NR이 가장 낮았으며 A-NR의 경우는 가장 높은 값을 나타내었다.
Natural rubber (NR) was coagulated using different methods, i.e., acid coagulation with acetic acid (A-NR), natural coagulation (N-NR), and microorganism coagulation (M-NR). The crosslink density, vulcanization properties, dynamic properties, and heat build-up were investigated. The results showed that M-NR had the highest crosslink density and fastest cure rate, and A-NR had the lowest crosslink density and slowest cure rate. The dynamic properties were measured using a rubber process analyzer, dynamic thermomechanical analysis and compression heat build-up tester; the results showed that the dynamic properties had a close relationship with the crosslink density. The loss factor was lowest for M-NR and highest for A-NR.
Keywords:natural rubber;crosslink density;dynamic properties;coagulation method
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