Coupled S-sbr Blends The Material Structure Design And Performance Optimization

The research of the thesis can be divided into three parts:Firstly, there is a comprehensive research of properties for SSBR of BUCT, Yanhua academe and JSR company. We investigated the processing performance, physical mechanic properties and dynamic properties of coupled SSBR.Secondly, we researched the change of properties of SSBR with the increasing coupling efficiency, the mechanism of Sn-C transfering and the effect of C.B reinforcing to SSBR and SSBR/BR blending system.Thirdly, on the basis of the former research, we optimized the formula of trend based on SSBR by means of math, the relations between variables SSBR/BR, DM/D C.B/SiO2 and sulfured Rubber's physical properties had been studied by means of three elements quadratic general revolving compound design. The results disclosed the inner regulars among many factors by a series of contours of variable and property. Moreover, we intorduce a advanced design method of formula to anticipate and optimize the tread formula of SSBR/NR/BR blending system. The relations between compounding ratio and properties are showed by triangle graph.The results of experiments show that the SSBR SL552 of Japan JSR company has a better comprehensive properties, the physical mechanic properties of Yanhua SSBR 2305 approaches that of SSBR SL552 and its tan 6 (60℃) is closed to SSBR SL552. The research of BUCT SSBR indicates that the physical mechanic properties are increased with the coupling efficiency and the dynamic heating is declined. In order to guarantee the comprehensive properties of coupled SSBR, the coupling efficiencybetween 40% and 80% is better. The reson of low heating is the mechanism of Sn-C transfering. The method of uniformity design showed a good effect in formula design of rubber. It not noly decreases the experiment number but also discloses the quantitative relation between properties and variables accurately. Furthermore, we can achieve the purpose of adjusting formula and optimizing formula through it.