半补强炭黑填充型粉末氯丁橡胶(Ⅱ)物理机械性能

Carbon black (SRF) filled powdered polychloroprene rubber [P(CR/SRF)] (Ⅱ)mechanical properties

采用均匀试验设计的方法研究了三个主要因子(炭黑、炭黑分散剂、包覆剂)对半补强炭黑(SRF)填充型硫调节型粉末氯丁橡胶[P(CR/SRF)]混炼胶的硫化特性、硫化胶老化前与老化后物理机械性能的影响。建立了这些性能与上述变量之间的函数关系模型,并进行了验证。验证结果表明,本章所提出的模型可以很好地表征产物性能与三个变量之间的关系。扫描电镜(SEM)分析表明,炭黑在P(CR/SRF)中的分散程度优于CR/SRF,采用粉末化技术有利于提高填料在橡胶基体中的分散效果。

Carbon black (SRF) filled powdered polychloroprene rubber [P(CR/SRF)] was prepared by the method of coagulation precipitation,using polymer resin as coating resin.The effect of three factors (carbon black content,carbon black emulsifier and coating resin) on curing properties and mechanical properties before and after aging of P(CR/SRF) were studied,the test plan was designed by the Uniform Design Method (UDM),and the test data were fitted by regression analysis method.The quantitative relations among the properties of P(CR/SRF) and the three factors were described by the optimum regression equations,and the properties were predicted and verified in the test range.The results show that these models can fit the test results satisfactory.SEM analysis showed that the dispersion of carbon black in P(CR/SRF) are better than that of CR/SRF,which gives carbon black filled powdered polychloroprene rubber a good respect in improving the dispersion of filler in the rubber matrix.