转子棱顶与密炼室的宽大间隙对短纤维混炼胶性能的影响  

Effect of big clearance between wing top and mixing room on performances of short fiber-rubber composite

作　　者：汪传生[1] 张德伟[1] 刘彩军[2] 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]枣庄学院物理与电子工程系,山东枣庄277160

出　　处：《合成橡胶工业》2011年第1期16-21,共6页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(50775116)

摘　　要：根据密炼机转子的棱顶与密炼室壁之间的大间隙理论,设计并试制了新型六棱同步转子,通过与普通四棱同步转子和六棱同步转子对比,分析了它们对短纤维-橡胶复合材料混炼特性和硫化胶性能的影响。结果表明,新型六棱同步转子对短纤维-橡胶复合材料的混炼作用优于普通四棱同步转子和六棱同步转子。在天然橡胶中加入聚酯短纤维后,胶料的流动性变差,从而导致混炼时能耗增大,排胶温度升高,并且硫化胶的拉伸强度、定伸应力、撕裂强度等都随短纤维添加量的增加而先升高后降低;适宜的短纤维添加量为3份,过量添加会使硫化胶的物理机械性能下降。According to the theory of big clearance between wing top and mixing room,the new type of six-wing synchronous rotor was designed and manufactured.And the effects of rotor structure on mixing process and properties of short fiber-rubber composite were analyzed by comparing with four-wing synchronous rotor and six-wing synchronous rotor.The experimental results indicated that the mixing performances of new type six-wing synchronous rotor were better than four-wing synchronous rotor and six-wing synchronous rotor.When being mixed with short fibers,the rubber would get worse in flow performance,hence leading the maximum power and discharging temperature both to increase.Also,the properties of short fiber-rubber composites,such as tensile strength,modulus at 300% and tear strength etc would improve and then deteriorate along with the addition of short fiber.The proper loading level of short fiber was 3 phr.

关 键 词：同步转子 间隙 短纤维 天然橡胶 混炼 

分 类 号：TQ330.43[化学工程—橡胶工业]