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通过气相色谱/质谱联用法测定丁苯橡胶(SBR)提取液中的松香酸类物质,以攀定溶聚丁苯橡胶(SSBR)和以松香酸皂或混合酸皂为乳化剂的乳聚丁苯橡胶(ESBR)。结果表明:对生胶而言,无论ESBR使用何种乳化剂,均可以通过松香酸类物质和/或脂肪酸类物质完全区分ESBR和SSBR;混炼胶、硫化胶和橡胶制品在确定含有SBR的基础上,通过检出松香酸类物质的存在即可确认ESBR。 相似文献
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经过近50年的发展,我国合成橡胶产业已经发展成为产品体系较完整、年产量超过百万吨以上的重要产业。目前已经建成丁苯橡胶(SBR)(包括乳聚丁苯橡胶(ESBR)和溶聚丁苯橡胶(SSBR)、聚丁二烯橡胶(BR)、丁基橡胶(IIR)、氯丁橡胶(CR)、丁腈橡胶(NBR)和乙丙橡胶(EPR)等基本胶种的产品生产体系。此外,我国也大量生产丁苯热塑性弹性体(SBS)和丁苯胶乳,生产丙烯酸酯橡胶、硅橡胶、 相似文献
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丁苯橡胶(SBR)根据生产工艺可以分为乳聚丁苯橡胶(ESBR)和溶聚丁苯橡胶(SSBR)两大类。目前,我国是世界最大的ESBR生产国,产能约占世界总产能的18%;SSBR产能居世界第3位,约占世界总产能的10%。 相似文献
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目前,我国是世界最大的乳聚丁苯橡胶(ESBR)生产国,产能约占世界ESBR总产能的18%。溶聚丁苯橡胶(SSBR)产能居世界第3位,约占世界SSBR总产能的10%。 相似文献
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锡偶联型溶聚丁苯橡胶的流变性能 总被引:4,自引:1,他引:4
研究了锡偶联型溶聚丁苯橡胶(SSBR)生胶及其混炼胶的流变性能。并与乳聚丁苯橡胶(ESBR)作了对比。结果表明,锡偶联型SSBR生胶及混炼胶均属切力变稀的假塑性流体,混炼胶对剪切速率和温度的敏感性比生胶强。SSBR混炼胶对剪切速度的敏感性比ESBR混炼胶的强。挤出胀大效应表明锡偶联型SSBR混炼胶的弛豫速度比ESBR混炼胶的快,挤出胀大小,加工性能优于ESBR。 相似文献
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对溶聚丁苯橡胶(SSBR)2506的结构及性能进行了测试,与乳聚丁苯橡胶(ESBR)1500进行了对比,并研究了SSBR 2506与天然橡胶(NR)并用在轮胎胎面胶中的应用。结果表明,与ESBR 1500相比,SSBR 2506具有较高的1,2-结构含量;SSBR 2506的焦烧时间和正硫化时间较长,加工安全性好,拉伸性能稍差,耐老化性能和耐磨性能大幅提高;SSBR 2506的玻璃化转变温度较低,抗湿滑性能稍差,滚动阻力大幅降低。当SSBR 2506/NR的质量比为20/80时,轮胎胎面胶的综合性能较佳。 相似文献
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SSBR2530在轮胎胎面胶中的应用 总被引:1,自引:0,他引:1
研究溶聚丁苯橡胶(SSBR)2530等量代替乳聚丁苯橡胶(ESBR)1712在轮胎胎面胶中的应用.结果表明,与ESBR1712胶料相比,SSBR2530胶料具有较好的耐磨和耐屈挠疲劳性能,并且生热较低.采用SSBR2530的成品轮胎与采用ESBR的成品轮胎相比,胎面胶物理性能相似,经济效益显著. 相似文献
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以溶聚丁苯橡胶(SSBR)Buna VSL 5025-1和2438-2HM、乳聚丁苯橡胶(ESBR)1712和1721并用BR9000为基体,以炭黑和白炭黑为补强剂,对比研究几种胶料的硫化特性、物理性能、动态力学性能、耐磨性能和抗湿滑性能。结果表明:与ESBR1712和1721胶料相比,炭黑或白炭黑填充SSBR Buna VSL 5025-1和2438-2HM胶料的操作安全性、耐磨性能、抗湿滑性能较好;白炭黑填充SSBR Buna VSL 5025-1和2438-2HM胶料的滚动阻力较小、耐热老化性能较差,炭黑填充SSBR Buna VSL 5025-1和2438-2HM胶料的滚动阻力较大、耐热老化性能较好。 相似文献
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Preparation,structure, and properties of end‐functionalized miktoarms star‐shaped polybutadiene–sn–poly(styrene–butadiene) rubber
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Two miktoarm star‐shaped rubbers with large‐volume functional groups of 1,1‐diphenylhexyl at the ends of arms (DMS–PB–SBR) and one miktoarm star‐shaped rubber with n‐butyl groups at the ends of arms (BMS–PB–SBR) were prepared by 1,1‐diphenylhexyllithium (DPHLi) and n‐butyl lithium as initiators, respectively. The molecular structures and morphological properties of the three rubbers (MS–PB–SBR) were studied and compared with those acquired from the blend consisting of star‐shaped solution‐polymerized butadiene styrene rubber (S‐SSBR) and butadiene rubber (PBR) prepared by ourselves. The results showed that MS–PB–SBR exhibited a more uniform distribution of PBR phase and a smaller phase size of PBR than that of S‐SSBR/PBR blend. It is found that MS–PB–SBR composites filled with CB showed the lower Payne effect than that of S‐SSBR/PBR/CB composite, suggesting that the MS–PB–SBR/CB composite (particularly the DMS–PB–SBR/CB composites) would possess excellent mechanical properties, high wet‐skid resistance, and low rolling resistance. For the studied MS–PB–SBR systems, the contribution of large‐volume functional groups at the end of PBR molecular chains to decrease the rolling resistance was larger than that of Sn coupling effect. It is envisioned that the miktoarm star‐shaped rubbers with 1,1‐diphenylhexyl groups at the molecular ends would be useful for making treads of green tires. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2014 , 131, 40002. 相似文献
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Grafting reaction of solution polymerized styrene butadiene rubbers (SSBR) and 3‐mercaptopropionic acid in situ was investigated in a solid state and a series of SSBR with different polarity degree were prepared through grafting 3‐mercaptopropionic acid onto SSBR chains in the process of mixing. The feasibility of solid‐phase grafting in situ (SPGiS) was verified by 1H‐nuclear magnetic resonance and Fourier transform infrared spectroscopy. Compared with unmodified SSBR/silica compounds, the SSBR/silica compounds with SPGiS exhibited preferable performance in silica dispersion, rubber‐filler interaction, and reinforcing efficiency. The scanning electron microscope and transmission electron microscope showed that silica presented better dispersion and smaller aggregates in the SSBR of SPGiS. Dynamical mechanical analysis of vulcanized rubber compounds with SPGiS showed that the wet skid resistance and the rolling resistance of SSBR/silica compounds were improved separately. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46653. 相似文献
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研究了微晶纤维素(MCC)和改性微晶纤维素(MMCC)的用量对丁苯橡胶(SBR)硫化胶物理机械性能的影响,以及分别填充20phrMCC和MMCC的SBR复合材料的耐磨性和动态力学性能分析。结果表明,当MCC和MMCC的用量都为20phr时,硫化胶有最大的拉伸强度,分别为15.3MPa和19.0MPa;填充MMCC的SBR复合材料的磨耗体积比填充MCC的降低了41%;填充20phr的MCC和MMCC的SBR具有相似的玻璃化温度。 相似文献