排序方式: 共有16条查询结果,搜索用时 31 毫秒
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锡偶联型溶聚丁苯胶性能评价 总被引:7,自引:0,他引:7
本文研究了具有适宜的苯乙烯、乙烯基含量及其配比的15立升釜聚合的锡偶联型溶聚丁苯橡胶(S-SBR)的硫化及力学性能、古德里奇疲劳温升、动态力学及摩擦性能,并与低温乳聚丁苯橡胶(E-SBR)进行了平行对比。结果表明,锡偶联型S-SBR是一种集较佳的静态性能、优异的动态性能、令人满意的安全及低能耗性为一体的新型胎面材料。 相似文献
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叙述了世界合成橡胶生产国的合成橡胶产量、装备能力、消费量、品种比例。以美国、欧盟、俄罗斯、日本、中国、韩国等几个国家为例,阐述合成橡胶工业近80年的发展变化。并重点介绍了当今世界10强合成橡胶企业集团(朗盛、中石化和中石油、锦湖化学、固特异与埃克森美孚、西伯儿、宝力米-欧罗巴等)的生产能力和发展状况等。现在的金融危机给合成橡胶工业的发展带来困难,但应看到这也是给合成橡胶企业一个调整的机会。并给出如下预测:合成橡胶企业将朝着经营多元化、规模大型化、装置多功能化、品种多样化、产品高性能化、生产环保化、橡胶低成本化的方向发展。 相似文献
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降低轮胎滚动阻力方法的初步探讨 总被引:1,自引:1,他引:0
综合国外文献,论述降低轮胎胎面胶滚动阻力的方法。主要方法有:选择在0℃左右具有较高的损耗因子,在70℃左右具有较低的损耗因子的聚合物,如选用通过调整合成工艺和化学改性得到的最佳滞后损失的溶聚丁苯橡胶;在胎面胶中使用白炭黑和低滚动阻力炭黑。简要论述了操作油,防老化体系,硫化体系,操作助剂和偶联剂等的选择对胶料滚动阻力的影响。 相似文献
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溶聚丁苯橡胶在绿色轮胎胎面体系中的应用 总被引:2,自引:0,他引:2
进行了不同种类溶聚丁苯橡胶在绿色轮胎胎面体系中的应用研究。从试验结果看,溶聚丁苯胶中苯乙烯含量、乙烯基含量的变化,以及所充油品种类的变化,对胶料的基本物理性能及动态性能有一定影响。依据苯乙烯含量及乙烯基含量比较,使用苯乙烯含量高、乙烯基含量低的溶聚丁苯胶的胎面混炼胶tanδ(0℃)低,tanδ(60℃)低,即抗湿滑性差,滚动阻力好;充环保芳烃油(TDAE)的溶聚丁苯胶与充环烷油(NAP-10)的溶聚丁苯胶相比较,充环保芳烃油(TDAE)的溶聚丁苯胶使用后,混炼胶tanδ(0℃)高,tanδ(60℃)低,即抗湿滑性及滚动阻力好。 相似文献
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叙述了世界合成橡胶生产国的合成橡胶产量、装备能力、消费量、品种比例。以美国、欧盟、俄罗斯、日本、中国、韩国等几个国家为例,阐述合成橡胶工业近80年的发展变化。并重点介绍了当今世界10强合成橡胶企业集团(朗盛、中石化和中石油、锦湖化学、固特异与埃克森美孚、西伯尔、宝力米-欧罗巴等)的生产能力和发展状况等。现在的金融危机给合成橡胶工业的发展带来困难,但应看到这也是给合成橡胶企业一个调整的机会。并给出如下预测:合成橡胶企业将朝着经营多元化、规模大型化、装置多功能化、品种多样化、产品高性能化、生产环保化、橡胶低成本化的方向发展。 相似文献
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探讨了白炭黑Z125用量对NR和S-SBR硫化胶性能的影响.结果表明:随Z125用量增大,NR和S-SBR两种硫化胶的物理机械性能得到明显改善,且分别在填充量为45 phr和60 phf时有较好的综合物理机械性能;与S-SBR硫化胶相反,NR硫化胶的耐疲劳破坏性随Z125用量增大明显降低;随屈挠次数的增加,NR硫化胶的割口尺寸单调增大,而S-SBR硫化肢的初始割口尺寸迅速增大,之后稍有升高;随Z125用量增大,NR和S-SBR硫化肢的损耗因子峰值(tan δmax)减小,0~70℃时,NR的损耗因子值(tan δ)和弹性模量(E')增大,S-SBR高于20℃时的tanδ艿值增加,E,基本呈增大趋势. 相似文献
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《Journal of Adhesion Science and Technology》2013,27(20):2755-2774
The surface properties of reinforcing fillers are a crucial factor for dispersion and filler–polymer interaction in rubber compounds, as they strongly influence the final vulcanized properties of the rubber article. Silica is gaining more and more importance as reinforcing filler for rubbers, as it allows for a reduction of rolling resistance and thus energy losses in tires, compared to the use of carbon black as filler. However, silica and common elastomers differ greatly in polarity and, therefore, are difficult to mix and thus have little interaction. In the present study plasma-coating of silica-filler with acetylene, thiophene and pyrrole is applied, and the surface-treated silicas are blended with S-SBR rubber, in an attempt to enhance the compatibility between the two. The dispersion and reinforcing effects of the modified silicas are investigated and compared with untreated and silanized silica. The relative rankings of the various coatings in reduction of filler–filler interaction, improved dispersion, enhanced polymer–filler interaction, apparent crosslink density and tensile mechanical properties are mutually different. Where the best silica dispersion and largest reduction in filler–filler interaction are obtained with polyacetylene coating and the worst with polythiophene coating, but the tensile properties achieved with the polythiophene coating are far better than all others. Apparently, the sulfur contained in the thiophene-moiety enhances the filler–polymer interaction and contributes to the degree of crosslinking. Unmodified silica performs worst in all aspects, also because its acidic nature harms the preferably alkaline vulcanization process. Silane treatment of silica has a positive effect on reduction of filler–filler interaction and improved dispersion, but has little effect on polymer–filler interaction in the still unvulcanized state. Its tensile properties after vulcanization are comparable with polyacetylene- or polypyrrole-coated silica. This investigation shows that the compatibility and interaction of silica with a polymer can be controlled by tailoring the surface energy of the filler by coating with plasma polymers. An appropriate monomer for the plasma polymerization process allows to improve the cured rubber properties. 相似文献