Abstract: The effect of asymmetric block copolymer of PI-b-PB (LIR-390) on phase morphology, processing capability and mechanical properties of isoprene rubber/butadiene rubber (IR/BR) blends was investigated in this study. The phase morphology of IR/BR blends characterized by atomic force microscopy (AFM) showed that LIR-390 was conducive to reduce the size of dispersed phase (BR) and uniformize the distribution of dispersed phase. When the concentration of LIR-390 in the blends was too high (7 phr), BR phase size increased and compatibilization effect of LIR-390 was attenuated. The rheological behavior of IR/BR uncured rubber was studied by HAAKE rotational rheometer and the result showed that the storage modulus (G′) was reduced due to the addition of LIR-390, which indicated that the addition of LIR-390 could mitigate energy consumption in the processing of rubber blends. Moreover, the blends′ resistances to fatigue crack growth were analyzed by crack growth test unit. It was found that the introduction of LIR-390 could reduce the dispersed phase size and thus lower the rate of crack growth, but excess LIR-390 (7 phr) would encourage crack growth.
王文锦, 王克强, 叶深杰, 苗伟俊, 陈忠仁. 非对称嵌段共聚物PI-b-PB对IR/BR并用胶相形态与性能的影响*[J]. 《材料导报》期刊社, 2017, 31(2): 96-100.
WANG Wenjin, WANG Keqiang, YE Shenjie, MIAO Weijun, CHEN Zhongren. Effect of Asymmetric Block Copolymer of PI-b-PB on Phase Morphology and Properties of IR/BR Blends. Materials Reports, 2017, 31(2): 96-100.
1 杨清芝. 实用橡胶工艺学[M].北京:化学工业出版社,2005. 2 Robeson L M. Polymer blends: A comprehensive review[M]. Munich: Hanser,2007. 3 Dorel Feldman. Polyblend compatibilization[J]. J Macromol Sci Part A Pure Appl Chem,2005,42(5):587. 4 Galloway J A, Jeon H K, Bell J R, et al. Block copolymer compatibilization of cocontinuous polymer blends[J]. Polymer,2005,46(1):183. 5 Sauvarop B, Yuko I, Shinzo K, et al. Natural rubber and butadiene rubber blend using diblock copolymer of isoprene-butadiene as compatibilizer[J]. J Appl Polym Sci,1993,49(5):807. 6 Zanzig D J, Magnus F L, Hsu W L, et al. IBR block copolymers as compatibilizers in NR/BR blends[J]. Rubber Chem Technol,1993,66(4):538. 7 Liang Tao, Wei Xuling, Zhang Huiyi, et al. Progress in research and development of diene liquid rubber[J]. Chin Polym Bull,2012(4):11(in Chinese). 梁滔,魏绪玲,张惠怡,等.双烯类液体橡胶的研发进展[J].高分子通报,2012(4):11. 8 Zhou Rongjie, Li Chaoqun, Yang Xiaohong, et al. Effect of liquid natural rubber as a softener on the property of NR/silica composite[J]. Mater Rev: Res,2015,29(4):60(in Chinese). 周荣杰,李超群,杨晓红,等.液体天然橡胶作软化剂对NR/白炭黑复合材料性能的影响[J].材料导报:研究篇,2015,29(4):60. 9 Yang Yang, Yin Guojie, Wang Xiaoping, et al. Influence of LIR-50 on mixing characters and physical properties of NR/BR compounds[J]. Chin Elastom,2005,15(5):47(in Chinese). 杨阳,尹国杰,王小萍,等.LIR-50对NR/BR胶料混炼特性和力学性能的影响[J].弹性体,2005,15(5):47. 10 Yin Guojie, Yang Yang, Wang Xiaoping, et al. Influence of LIR on processibility of NR/BR blend[J]. Chin Rubber Ind,2006,53(6):325(in Chinese). 尹国杰,杨阳,王小萍,等.LIR对NR/BR混炼胶加工性能的影响[J].橡胶工业,2006,53(6):325. 11 Zhong Shuo, Wang Chao, Weng Gengsheng, et al. Effect of LIR-390 on structure and properties of natural rubber and butadiene rubber[J]. Mater Rev,2015,29(S1):267(in Chinese). 钟硕,王超,翁更生,等.液体异戊二烯－丁二烯共聚物对天然橡胶、顺丁橡胶结构与性能的影响[J].材料导报,2015,29(专辑25):267. 12 Shi J, Zou H, Ding L, et al. Continuous production of liquid reclaimed rubber from ground tire rubber and its application as reactive polymeric plasticizer[J]. Polym Degrad Stab,2014,99(13):166. 13 Zhu Jie, Sun Runguang. Introduction to atomic force microscope and its manipulation [J]. Life Sci Instrum,2005,3(1):22(in Chinese). 朱杰,孙润广.原子力显微镜的基本原理及其方法学研究[J].生命科学仪器,2005,3(1):22. 14 Galuska A A, Poulter R R, Mcelrath K O. Force modulation AFM of elastomer blends: Morphology, fillers and cross-linking [J]. Surf Interface Anal,1997,25(6):418. 15 Brown H R. Effects of chain pull-out on adhesion of elastomers[J]. Macromolecules, 1993, 26(7):1666. 16 Wu Ting, Wen Xiufang, Pi Pihui, et al. Research progress and application of interpenetrating polymer networks[J]. Mater Rev,2009,23(9):53(in Chinese). 吴婷,文秀芳,皮丕辉,等.互穿网络聚合物的研究进展及应用[J].材料导报,2009,23(9):53. 17 Silva J, Machado A V, Maia J. Rheological behavior of compatibilized and non-compatibilized PA6/EPM blends[J]. Rheol Acta,2007,46(8):1091. 18 Fetters L J, Lohse D J, Richter D, et al. Connection between polymer molecular weight, density, chain dimensions, and melt viscoelastic properties[J]. Macromolecules,1994,27(17):4639. 19 Wang Jian, Lu Yuyuan, Xu Yuci, et al. Effects of block copolymer compatibilizers on phase behavior and interfacial properties of incompatible homopolymer composites[J]. Acta Polym Sinica,2016(3):271(in Chinese). 王健,卢宇源,徐玉赐,等.嵌段共聚物增容剂对不相容均聚物共混体系相行为和界面性质的影响[J]. 高分子学报,2016(3):271. 20 Weng G, Yao H, Chang A, et al. Crack growth mechanism of natural rubber under fatigue loading studied by a real-time crack tip morphology monitoring method[J]. RSC Adv,2014,4:43942. 21 Ghosh P, Stocek R, Gehde M, et al. Investigation of fatigue crack growth characteristics of NR/BR blend based tyre tread compounds [J]. Int J Fract,2014,188(1):9. 22 Greensmith H W. Rupture of rubber. XI. Tensile rupture and crack growthin a noncrystallizing rubber [J]. J Appl Polym Sci,1964,8:1113. 23 Liu Yanpeng, Weng Gengsheng, Yao Hong, et al. Crack growth mechanism of natural rubber/butadiene rubber blend under fatigue loading[J]. Polym Mater Sci Eng,2015(3):81(in Chinese). 刘衍朋,翁更生,姚鸿,等.天然橡胶/顺丁橡胶共混胶体系裂纹生长行为的形态演变机理[J].高分子材料科学与工程,2015(3):81.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
