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Study on Vulcanizing Properties of CB Filled IIR with sulfur Curing System

Luo Quan-kun

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Abstract

The vulcanizing properties of CB filled IIR with sulfur curing system were researched.The results showed that comparing conventional sulfur curing system with sulfurless curing system the former exhibited slightly shorter scorch time and longer optimum cure time and better mechanical property,but its heat age stability was worse.With sulfurless vulcanizing system both the scorch time and the optimum cure time decrease as the level of DTDM varies from 2.5phr to 4.5 phr.While DTDM blending with TRA as vulcanizating agent of IIR the scorch time decreased and the optimum cure time increases as the blending ratio of DTDM and TRA varies from 2∶1 to 1∶2.

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What this paper is about

The vulcanizing properties of CB filled IIR with sulfur curing system were researched.The results showed that comparing conventional sulfur curing system with sulfurless curing system the former exhibited slightly shorter scorch time and longer optimum cure time and better mechanical property,but its heat age stability was worse.With sulfurless vulcanizing system both the scorch time and the optimum cure time decrease as the level of DTDM varies from 2.5phr to 4.5 phr.While DTDM blending with TRA as vulcanizating agent of IIR the scorch time decreased and the optimum cure time increases as the blending ratio of DTDM and TRA varies from 2∶1 to 1∶2.

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Available abstract

The vulcanizing properties of CB filled IIR with sulfur curing system were researched.The results showed that comparing conventional sulfur curing system with sulfurless curing system the former exhibited slightly shorter scorch time and longer optimum cure time and better mechanical property,but its heat age stability was worse.With sulfurless vulcanizing system both the scorch time and the optimum cure time decrease as the level of DTDM varies from 2.5phr to 4.5 phr.While DTDM blending with TRA as vulcanizating agent of IIR the scorch time decreased and the optimum cure time increases as the blending ratio of DTDM and TRA varies from 2∶1 to 1∶2.

Key concepts: Vulcanization, Curing (chemistry), Materials science, Sulfur, Composite material, Natural rubber, Metallurgy

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