【作者】 丁琳；

【导师】 赵树高；

【作者基本信息】 青岛科技大学 ， 高分子化学与物理， 2010， 硕士

【摘要】 本文通过傅里叶红外光谱仪(FTIR)、差示扫描量热仪(DSC)、热重分析仪(TG)等分析测试方法对具有不同1,2结构含量的充油溶聚丁苯橡胶和具有不同端基偶联方式的非充油溶聚丁苯橡胶的微观结构进行了表征,并与两种乳聚丁苯橡胶进行对比,考察了十五种炭黑填充溶聚丁苯橡胶的结构对其物理机械性能及动态粘弹性的影响,还对SSBRT2003的异构化现象进行了研究,并与BR进行了比较。结果表明:端基偶联溶聚丁苯橡胶中SL563的1,2结构含量最高,T5800的反-1,4结构含量最高,2305的顺-1,4结构含量最高;炭黑填充胶中,2305的拉伸强度最高,T5800的撕裂强度最高,2606的定伸应力最高;2305的损耗因子峰最高,且其峰温最高,2606的Payne效应最高。端基非偶联溶聚丁苯橡胶T2003的顺-1,4结构含量最高,5025-0的反-1,4结构含量最高,1,2结构含量也最高;炭黑填充胶中,T2000R的回弹性最好,T2003的硬度和Payne效应最高,5025-0的300%定伸、损耗因子峰高和峰温均最高。高乙烯基溶聚丁苯橡胶中,2557A的Tg最低,72606的分子量最高,且其分子量分布最窄;炭黑填充胶中,5025-1在高弹态的储能模量最大,2564T的储能模量最小且损耗因子峰最高,5025-1的损耗因子峰最低,2564A和5025-1的Payne效应较大。低乙烯基溶聚丁苯橡胶中,T1534的Tg最低;炭黑填充胶中,2535L的拉伸强度最高,储能模量最低,而T1534的耐磨性最低,Payne效应最小,2530的Payne效应最大。BR/S/NS体系的非等温硫化过程和等温硫化过程中均存在顺反异构化反应,且非等温硫化过程中的顺反异构化程度比等温硫化过程高。BR/S/NS体系的非等温硫化过程和等温硫化过程中的顺反异构化均在硫化后期比较明显。SSBR/S/NS体系的非等温硫化过程和等温硫化过程中均存在顺反异构化反应,且非等温硫化过程中的顺反异构化程度比等温硫化过程高。SSBR/S/NS体系非等温硫化过程中的顺反异构化在硫化后期比较明显,而等温硫化过程中的顺反异构化在整个反应过程中稳步上升。对于SSBR/S/NS体系的非等温硫化过程,促进剂对顺反异构化的作用小于硫黄。更多还原

【Abstract】 In this paper, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TG) were used to test the microstructure of oil filled-SSBR with different content of 1,2-polymerized styrene butadiene rubber and non-oil filled-SSBR coupled with different terminal groups.And then 15 types of carbon black filled SSBR’s physical and mechanical properties,dynamic viscoelastic properties were researched to investigate the effect according to the structure compared with two kinds of ESBR. And the impact of the isomerization about SSBRT2003R had been studied and compared with the BR. The results showed that:Among the SSBR with coupling terminal group, SL563 had the highest content of vinyl. T5800 contained the most content of trans-1,4. 2305 had the largest amount of cis-1,4. As for the SBR filled with carbon black N330, the tensile strength of 2305 was the highest. The tearing strength of T5800 was the highest. The modulus at 100%&300% of 2606 was the highest and its Payne effect was also higher than any other one. The peak of loss factor of 2305 was the largest and so as to the temperature of the peak.As to the SSBR with uncoupling terminal group, the cis-1,4 content of T2003 was the highest. The trans-1,4 content of 5025-0 was the highest and the content of vinyl was also the highest. For the SBR filled with carbon black, the rebound resilience of T2000R was best, The hardness and Payne effect of 2003 were the highest and 5025-0 had the highest 300% modulus,peak of loss factor, and temperature of the peak.Among the SSBR with highvinyl, The Tg of 2557A was the lowest, and 72606 had the highest molecular weight and its molecular weight distribution was the narrowest. About the SSBR filled with carbon black, 5025-1 had the largest storage modulus and the lowest peak of loss factor, however, 2564T had the lowest storage modulus and the highest peak of loss factor. Both 2564A and 5025-1 had the highest Payne effect.As to the SSBR with lowvinyl, the Tg of 1534 was the lowest. Among carbon black filled SSBR, The 2535L had the highest tensile strength and the lowest storage modulus, however, 1534 had the lowest abrasive resistance and Payne effect. 2530 had the highest Payne effect.The cis-trans isomerism on the system of BR/S/NS appeared regardless of the isothermal or non-isothermal vulcanizated process. And the degree of cis-trans isomerism of non-isothermal vulcanizated process was much deeper than isothermal vulcanizated process. The cis-trans isomerism of BR/S/NS was evident during the last stage of vulcanization.There was cis-trans isomerism on the system of SSBR/S/NS and the degree of cis-trans isomerism in the process of non-isothermal vulcanization was deeper than the isothermal vulcanization. The cis-trans isomerism of non-isothermal vulcanizated process on the system of SBR/S/NS was obvious during the later stage of vulcanization, however, the cis-trans isomerism of isothermal vulcanizated process was steady during the process of vulcanization. As to the process of non-isothermal vulcanization about SSBR/S/NS, The effect of accelerator to cis-trans isomerism was smaller than the effect of sulphur.更多还原