摘要
对硅镁钙晶须(SMC晶须)在丁苯橡胶(SBR)中的应用进行了研究,考察了晶须用量(0～50phr)对胶料的硫化特性和硫化胶的力学性能的影响,并与常用的填料白炭黑(WCB)和碳酸钙(CaCO3)进行了比较。实验结果表明:SMC晶须对SBR有促进硫化作用;SMC晶须对SBR具有一定的补强作用,拉伸强度随着晶须用量的增加而增大;用量相同时,SMC晶须填充的复合材料硬度和撕裂强度与WCB填充的相当,300%定伸应力比WCB填充的高,拉伸永久变形比WCB小得多;SMC晶须补强效果远优于CaCO3。
： A new kind of inorganic whisker SiCh-MgO-CaO （SMC） was added into styrene-butadiene rubber （SBR） on laboratory-sized two-roll mill to prepare SMC whisker/SBR composites. For comparison,two kinds of commonly used fillers precipitated silica and calcium carbonate were also used. The effects of these fillers on the cure characteristics and mechanical properties-of SBR at various loadings,ranging from 0 to 50 phr were investigated. The results showed that SMC whisker can inerease cure rate and exhibit better overall cure properties. Hardness and tear strength of the SMC whisker/SBR composites are equivalent of that of silica-filled SBR materials. Modulus at 300% elongation of the composites is higher and tensile set is much lower than that of silica filled SBR. SMC whisker shows much higher reinforcement effect than CaCO3.
出处
《弹性体》
CAS
北大核心
2009年第5期48-51,共4页
China Elastomerics
关键词
SMC晶须
丁苯橡胶
复合材料
硫化特性
力学性能
SMC whisker
styrene butadiene rubber
composite
cure characteristics
mechanical properties
