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Effects of Environmental Factors such as Temperature and Ozone Concentration on the Properties of BR/Crystalline Rubber Blend  

Park, Chan-Young (Division of Applied Chemical Engineering, Pukyong National University)
Lee, Won-Kee (Division of Applied Chemical Engineering, Pukyong National University)
Min, Seong-Kee (Division of Applied Chemical Engineering, Pukyong National University)
Publication Information
Elastomers and Composites / v.45, no.1, 2010 , pp. 44-50 More about this Journal
Abstract
The butadiene rubber(BR) blends with chloroprene rubber(CR) were prepared by mechanical mixing method. Cure characteristics, mechanical properties, ozone resistance properties and dynamic mechanical properties were subsequently examined. The properties of ozone resistance of pure BR was significantly improved through blending with 50 wt% CR. Dynamic characteristics determined from a Rheovibron generally showed two glass transition($T_g$) for the entire blends, $tan{\delta}$ peak monotonically shifted toward the higher temperature with the increasing content of CR. Optimum cure time of compound was significantly lengthened with loading of CR.
Keywords
Ozone resistance properties; dynamic mechanical properties; Rheovibron; $tan{\delta}$; optimum cure time;
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