Cross-Linking of Ethylene-Octene Copolymer (EOC) by Dicumyl Peroxide (DCP)

被引：14
|
作者：
Svoboda, Petr [1 ]
Poongavalappil, Sameepa [1 ]
Theravalappil, Rajesh [1 ]
Svobodova, Dagmar [1 ]
Mokrejs, Pavel [1 ]
Kolomaznik, Karel [2 ]
Ougizawa, Toshiaki [3 ]
Inoue, Takashi [4 ]
机构：
[1] Tomas Bata Univ Zlin, Fac Technol, Zlin 76272, Czech Republic
[2] Tomas Bata Univ Zlin, Fac Appl Informat, Zlin 76005, Czech Republic
[3] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan
[4] Yamagata Univ, Dept Polymer Sci & Engn, Yonezawa, Yamagata 9928510, Japan
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2011年 / 121卷 / 01期
关键词：
ethylene-octene copolymer; dicumyl peroxide; cross-linking; chain scission; RPA; DSC; ETHYLENE-1-OCTENE COPOLYMERS; VISCOELASTIC PROPERTIES; GAMMA-IRRADIATION; CURE KINETICS; POLYETHYLENE; POLYPROPYLENE; ELASTOMER; RADIATION;
D O I：
10.1002/app.33655
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Ethylene-octene copolymer (EOC) was crosslinked by dicumyl peroxide (DCP) at various temperatures (150-200 degrees C). Six concentrations of DCP in range 0.2-0.7 wt % were investigated. cross-linking was studied by rubber process analyzer (RPA) and by differential scanning calorimetry (DSC). From RPA data analysis real part modulus s`, tan delta, and reaction rate were investigated as a function of peroxide content and temperature. The highest s`(max) and the lowest tan d were found for 0.7% of DCP at 150 degrees C. Chain scission was analyzed by slope analysis of conversion ratio, X in times after reaching the maximum. Less susceptible to chain scission are temperatures in range 150-170 degrees C and peroxide levels 0.2-0.5%. Heat of reaction was analyzed by DSC at various heating rates (5-40 degrees C min(-1)). It was found to be exothermic. By projection to zero heating rate, the reaction was found to start at 128 degrees C with the maximum at 168 degrees C. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 521-530, 2011
引用
收藏
页码：521 / 530
页数：10
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