基于胶乳/炭黑湿法混合的丁苯橡胶/炭黑湿法预混胶(P(SBR/CB))是一种在低剪切力环境下制备得到的炭黑在丁苯橡胶基体中分散优良的橡胶/炭黑预混胶,与采用传统机械混炼得到的充炭黑母胶相比,未经塑炼加工的P(SBR/CB)中的橡胶-炭黑相互作用较弱,故其加工行为表现出诸多新的特点.本文在分析P(SBR/CB)结构的基础上,采用实验室开炼机和Brabender转矩流变仪研究了其塑炼特性,探讨了开炼机薄通次数和密炼机塑炼工艺参数(循环油温、转速、塑炼时间等)对其塑炼特性(表观黏度、门尼黏度、排胶温度和结合胶合量)的影响规律,发现P(SBR/CB)的塑炼过程主要包括2个同时进行的进程,即炭黑网络的破坏和橡胶-炭黑相互作用的增强,且可通过调节密炼机塑炼参数,调控P(SBR/CB)混炼胶的门尼黏度和结合胶合量.
Styrene-butadiene rubber / carbon black masterbatch based on SBR latex and carbon black,also called powdered carbon black filled styrene-butadiene rubber,i.e.,P(SBR/CB),is a pre-mixture of SBR latex and carbon black in powdered form with good carbon black dispersion throughout the rubber matrix.In this study,after the characterization of the micro-structure of the filler dispersion in P(SBR/CB),the mastication properties of P(SBR/CB) were observed under a wide circling temperature,rotor speed and masticating time range,using a open mill and a mixing head attached to Brabender Plasticorder.It is found that there are two paralleled process during the masticating of P(SBR/CB),i.e.,the destruction of filler network and the rubber-carbon black interaction,and the Mooney viscosity and bound rubber contents could be tuned via the controlling of masticating speed and temperature.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%