ENR/CSM Blend의 자기가류

박찬영; 김병규

Polymer(Korea), Vol.17, No.5, 537-542, September, 1993

Export Citation

ENR/CSM Blend의 자기가류

Self-Vulcanization of ENR/CSM Blends

박찬영, 김병규

초록

ENR(epoxidized natural rubber)과 CSM(chlorosulfonated polyethylene)의 자기 공가류를 검토하기 위하여 open roll에서 다양한 조성의 블렌드를 제조하였다. Rheometer측정(최고 torque, tan δ 및 최적 가류시간)결과 70/30(ENR/CSM) 중량조성에서 공가류가 가장 효과적으로 일어남을 확인할 수 있었다. 또한 가류물의 Rheovibron 측정I결과 블렌드는 -20℃ 및 40℃ 부근에서 두 개의 전이를 보였으며 이를 각각 비가류고무 및 가류고무의 T_g로 해석하였다. 또한 70/30 블렌드는 35℃ 부근에서 가류고무전이에 해당하는 단일 T_g를 보인다.

The self-vulcanization, defined as a vulcanization which occurs without any curative, between ENR(epoxidized natural rubber) and CSM(chlorosulfonated polyethylene) was tested for a wide range of the blend(ENR/CSM) composition. Results from Rheometer(maximum torque, tan δ, and optimum cure time) showed that 70/30(ENR/CSM by weight) blend is subject to a most effective crosscure. Viscoelastic properties determined from a Rheovibron generally showed two glass transitions(T_g) for the blends, each indicating T_g of tole uncured(lower one) and cured rubber(higher one) In 70/30 blend, a single T_g corresponding to that of cured rubber was observed.

[References]

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Kim BK, Kim IH, Polym. Plast. Technol. Eng., 32(3), 167 (1993)
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Shem MC, Eisenberg A, Rubber Chem. Technol., 43, 95 (1970)
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[1] Brydson JA, "Rubber Materials and Their Compounds," Elsevier Applied Science, New York (1988)

[2] Roberts AD, "Natural Rubber Science and Engineering," Oxford University Press, Oxford (1988)

[3] Kim BK, Kim IH, Polym. Plast. Technol. Eng., 32(3), 167 (1993)

[4] Mukhapodhyay S, Chaki TK, De SK, J. Polym. Sci. C: Polym. Lett., 28, 25 (1990)

[5] Mukhapodhyay S, De SK, J. Mater. Sci., 25, 4027 (1990)

[6] Hess WM, Vegvari PC, Swor RA, Rubber Chem. Technol., 58, 351 (1985)

[7] Shem MC, Eisenberg A, Rubber Chem. Technol., 43, 95 (1970)

[8] Ardiner JB, Rubber Chem. Technol., 43, 370 (1970)

[9] Loadman MJR, Kinker AJ, Rubber Chem. Technol., 62, 234 (1989)

[10] Ahn TO, Kim CK, Kim BK, Jeong HM, Huh HD, Polym. Eng. Sci., 30(6), 341 (1990)