• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Eutectic Alloys in Sulfur-Based Rubber Vulcanizing Systems and Related Problmes
【24h】

Eutectic Alloys in Sulfur-Based Rubber Vulcanizing Systems and Related Problmes

机译：硫基橡胶硫化体系中的低共熔合金及相关问题

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An analysis of phase diagrams for alloys of components of sulfur-based rubber-vulcanizing systems permitted the calculation of weight ratios and melting temperatures of their eutectic alloys. From Mukhutdinov studies it is known that the formation of a simple eutectic alloy of chemical additives makes possible the reduction of their concentration in sulfur-based vulcanizing systems without decreasing, or even while increasing, their effectiveness. However, to create eutectic alloys, these additives should be in adequate concentration and dispersed within rubber compounds. There- fore, as a successive step of this investigation, zinc stearate dispersion was determined using the radioisotopic method. For this purpose atypical tread-rubber compound with a radioactive zinc stearate (containing 65Zn) was prepared, and then the 'Y radiation intensity from the rubber samples was measured to determine the zinc stearate dis- persion. There wasn't a uniform distribution of this additive within the rubber com- pound. It was found that zinc stearate doesn't bloom from the compound at a 3% concentration. Also, oil dispersion in different sulfur granules was determined by an ultrasensitive CCD camera. It had been employed to monitor the surface intensity of an ultraweak chemiluminescence of oil in sulfur subjected to oxidative deterioration stim- ulated by ozonization. The tested samples of soluble sulfur were oiled uniformly, but the polymeric sulfur samples were not. Thus, the probability of creating eutectic alloys with such kinds of sulfur during rubber compounding and processing depends on their local concentration of oil.
机译：通过分析硫基橡胶硫化系统各组分的合金相图，可以计算出其低共熔合金的重量比和熔融温度。从Mukhutdinov的研究中知道，化学添加剂的简单共晶合金的形成可以降低其在硫基硫化系统中的浓度，而不会降低甚至提高其有效性。然而，为了产生低共熔合金，这些添加剂应以足够的浓度分散在橡胶混合物中。因此，作为本研究的后续步骤，使用放射性同位素方法确定了硬脂酸锌的分散度。为此，制备了具有放射性硬脂酸锌（含65Zn）的非典型胎面胶化合物，然后测量了橡胶样品的Y辐射强度，以确定硬脂酸锌的分散度。这种添加剂在橡胶混合物中没有均匀分布。发现硬脂酸锌在3％的浓度下不会从化合物中绽放出来。而且，通过超灵敏CCD照相机确定了油在不同硫颗粒中的分散性。它已被用于监测硫中油的超弱化学发光的表面强度，该化学发光受臭氧化刺激而导致氧化变质。测试的可溶性硫样品均匀上油，而聚合硫样品则不均匀。因此，在橡胶混炼和加工过程中用这类硫产生低共熔合金的可能性取决于其局部油的浓度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号