| 摘要 |
PURPOSE:To provide the titled compsn. having low compression set and improved crack resistance, containing chloroprene rubber, an imidazole antioxidant and vegetable oil. CONSTITUTION:100pts.wt. chloroprene rubber is blended with 0.1-3pts.wt. imidazole antioxidant (e.g., 2-mercaptoimidazoline), 1-40pts.wt. vegetable oil (e.g., rape oil) and optionally 0.5-2pts.wt. vulcanization accelerator (e.g., thiocarbanilide) or a combination of 0.5-2pts.wt. sulfur and 0.1-2pts.wt. vulcanization accelerator (e.g., di-o-tolylguanidine) and 4-20pts.wt. metallic compd. (e.g., ZnO). The mixture is vulcanized at 100-200 deg.C for 0.5-120min.
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