丁吡橡胶改性丁苯橡胶/蒙脱土复合材料的性能
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摘要
采用液相改性法研究了丁吡橡胶(VPR)对丁苯橡胶(SBR)/蒙脱土(MMT)复合材料硫化性能、物理机械性能、动态力学性能和微观形态的影响。结果表明,VPR改性实现了对MMT的表面吸附及部分插层,有助于MMT在SBR基体中的剥离和分散。随着VPR质量分数的增加,材料的正硫化时间不断缩短,表明VPR改性具有明显的促硫作用。同时,材料的定伸应力不断增大,拉伸强度先增大后减小,扯断伸长率不断减小,当VPR质量分数为6%时,材料的综合力学性能最优。VPR改性显著降低了SBR/MMT复合材料60℃时的损耗因子,有助于开发低滚动阻力轮胎用胶。
The effects of butadiene-vinylpyridine rubber(VPR) on the curability, physical and mechanical properties, dynamical mechanical properties and micro morphology of styrene-butadiene rubber(SBR)/montmorillonite(MMT) composites were studied through the liquid phase modification. The results showed that VPR was adsorbed onto the MMT surface and inserted into the interlamination partly, which was conducive to the exfoliation and dispersion of MMT layers in SBR matrix. With the increase of mass fraction of VPR, the optimum curing time of composites was shortened, which indicated that the modification of VPR accelerated curing behavior. Simultaneously, the modulus of composites was increasing, the tensile strength increased first and then decreased, and the elongation at break was decreasing. When the mass fraction of VPR was 6%, the comprehensive mechanical properties of the composites were optimal. VPR could significantly reduce the loss factor of SBR/MMT composites at 60 ℃, which was helpful to the development of rubber for low rolling resistance tire.
The effects of butadiene-vinylpyridine rubber(VPR) on the curability, physical and mechanical properties, dynamical mechanical properties and micro morphology of styrene-butadiene rubber(SBR)/montmorillonite(MMT) composites were studied through the liquid phase modification. The results showed that VPR was adsorbed onto the MMT surface and inserted into the interlamination partly, which was conducive to the exfoliation and dispersion of MMT layers in SBR matrix. With the increase of mass fraction of VPR, the optimum curing time of composites was shortened, which indicated that the modification of VPR accelerated curing behavior. Simultaneously, the modulus of composites was increasing, the tensile strength increased first and then decreased, and the elongation at break was decreasing. When the mass fraction of VPR was 6%, the comprehensive mechanical properties of the composites were optimal. VPR could significantly reduce the loss factor of SBR/MMT composites at 60 ℃, which was helpful to the development of rubber for low rolling resistance tire.
引文
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[15] 王新洲,邓玉和,王思群,等.有机蒙脱土改性脲醛树脂的结构与纳米力学研究[J].光谱学与光谱分析,2016,36(6):1680-1684.
[16] 孙思远,刁恩杰,李向阳,等.有机改性蒙脱土吸附黄曲霉毒素B 1能力的研究[J].食品与机械,2017,33(3):66-70.
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[18] 陶燕春.偶联剂Si 747原位改性白炭黑增强溶聚丁苯橡胶复合材料的结构与性能研究[D].北京:北京化工大学,2016.
[19] 王小萍,贾德民,张安强,等.酚醛树脂改性NR/NBR共混物[J].合成橡胶工业,2000,23(5):317-318.
[2] 陈丽珍.丁吡胶乳合成新工艺[J].精细与专用化学品,1986(7):30.
[3] 毕鸿章.玻纤与橡胶的优良黏接剂——丁吡胶乳[J].砖瓦世界,1994(20):7.
[4] 王敏莲.环氧化天然橡胶对累托石/SBR和白炭黑/SSBR两类复合材料结构与性能的影响研究[D].北京:北京化工大学,2012.
[5] 张惠峰.黏土/丁苯橡胶纳米复合材料的气密性能研究以及在内胎中的应用[D].北京:北京化工大学,2001.
[6] Tang Zhenghai,Wu Xiaohui,Guo Baochun,et al.Preparation of butadiene-styrene-vinyl pyridine rubber-graphene oxide hybrids through co-coagulation process and in situ interface tailoring [J].Journal of Materials Chemistry,2012,22(15):7492-7501.
[7] 何少剑,王益庆,张立群.黏土/丁吡橡胶纳米复合材料的结构与性能研究[J].橡胶工业,2013,60(1):5-10.
[8] 崔春,何少剑,张立群,等.剥离型黏土/丁吡橡胶/丁腈橡胶纳米复合材料的制备及表征[J].合成橡胶工业,2012,35(1):81.
[9] 谷正,宋国君,李培耀,等.乳液插层法制备丁苯橡胶/有机蒙脱土纳米复合材料[J].合成橡胶工业,2008,31(3):214-217.
[10] 胡芳,刘俊男.印染废水的季铵型壳聚糖插层蒙脱土处理[J].印染,2016(4):14-18.
[11] 王霞,史晨杰,李晓燕,等.硅烷功能化蒙脱土/苯乙烯-乙烯-丁二烯-苯乙烯嵌段共聚物纳米复合材料的制备及性能[J].合成橡胶工业,2016,39(6):482-487.
[12] Hadj-Hamou A S,Habi A,Djadoun S.Thermal and FTIR analysis of the miscibility and phase behaviour of poly(isobutyl methacrylate-co-4-vinylpyridine)/poly(styrene-co-acrylic acid) systems [J].Thermochimica Acta,2010,497(1):117-123.
[13] 曾幸荣.高分子近代测试分析技术[M].广州:华南理工大学出版社,2007:232.
[14] 曾兆华,杨建文,李卓美.FTIR法研究M-SIIR与PSVP之间的络合作用[J].功能高分子学报,2002,15(1):32-34.
[15] 王新洲,邓玉和,王思群,等.有机蒙脱土改性脲醛树脂的结构与纳米力学研究[J].光谱学与光谱分析,2016,36(6):1680-1684.
[16] 孙思远,刁恩杰,李向阳,等.有机改性蒙脱土吸附黄曲霉毒素B 1能力的研究[J].食品与机械,2017,33(3):66-70.
[17] Ahmad M B,Gharayebi Y,Salit M S,et al.Effect of SiO2,particles on dispersion of montmorillonite (MMT) in polyimide nanocomposite during thermal imidization[J].Research on Chemical Intermediates,2015,41(3):1657-1671.
[18] 陶燕春.偶联剂Si 747原位改性白炭黑增强溶聚丁苯橡胶复合材料的结构与性能研究[D].北京:北京化工大学,2016.
[19] 王小萍,贾德民,张安强,等.酚醛树脂改性NR/NBR共混物[J].合成橡胶工业,2000,23(5):317-318.
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