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首页> 外文期刊>Journal of Applied Polymer Science >Effect of thiophosphoryl compounds as accelerators and coupling agents on the vulcanization of NR-XNBR blend
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Effect of thiophosphoryl compounds as accelerators and coupling agents on the vulcanization of NR-XNBR blend

机译：硫代磷酰基化合物作为促进剂和偶联剂对NR-XNBR共混物硫化的影响

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摘要

The effect of a number of thiophosphoryl compounds [viz., bis(isobutyl) thiophosphoryl di-, tri-, and tetrasulfides and bis(dicyclohexyl) thiophopsphoryl di-, tri-, and tetrasulfides] on natural rubber (NR)-carboxylated nitrile rubber (XNBR) blend was studied. All these thiophosphoryl compounds are capable of forming interrubber links leading to covulcanized blends which exhibit a fair degree of synergism with respect to physical properties, the maximum being obtained at the 25% NR and 75% XNBR blend composition. This is an obvious claim that the blend under investigation is technologically compatible, having some degree of interrubber interaction which is enhanced in case of two-stage vulcanization. The existence of interrubber interaction is judged by the swelling experiment. The blend morphology assessed by SEM micrographs corroborates the foregoing observations and accounts for the significant improvement in physical properties of the blend vulcanizates, particularly in two-stage vulcanization. (C) 2002 Wiley Periodicals, Inc. [References: 23]
机译：多种硫代磷酰基化合物[即，双（异丁基）硫代磷酰基二硫化物，三硫化物和四硫化物以及双（二环己基）硫代磷酰基二硫化物，三硫化物和四硫化物]对天然橡胶（NR）-羧化丁腈橡胶的影响研究了（XNBR）共混物。所有这些硫代磷酰基化合物都能够形成橡胶间键，从而导致共硫化的共混物在物理性能方面表现出相当程度的协同作用，在25％NR和75％XNBR共混物组合物中可获得最大的增效作用。这是一个显而易见的主张，即所研究的共混物在技术上是兼容的，具有一定程度的橡胶间相互作用，这种相互作用在两阶段硫化的情况下得到增强。橡胶间相互作用的存在通过溶胀实验来判断。通过SEM显微照片评估的共混物形态证实了上述观察结果，并说明了共混物硫化物的物理性能的显着改善，特别是在两阶段硫化中。 （C）2002 Wiley Periodicals，Inc. [参考：23]

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