共查询到20条相似文献,搜索用时 218 毫秒
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在胎面胶配方中采用高结构 N134炭黑进行大料对比实验,结果表明:一次法炼胶工艺较传统多段炼胶工艺的混炼胶流动性更好,利于后序半成品部件的加工;一次法生产的混炼胶物性及磨耗均优于传统多段混炼胶;同时,低温一次法减少了混炼段数,提高了生产效率;而且一次法也适用于多白炭黑配方胶料的混炼。因此,低温一次法炼胶工艺更能突出其必然优势 相似文献
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以全钢载重子午线轮胎0°带束层胶料混炼为例,对IM550E/IM1000ET重型串联密炼机与传统BB620型密炼机的混炼工艺性能进行对比研究。结果表明:与BB620型密炼机相比,IM550E/IM1000ET重型串联密炼机一段混炼生产效率低12.5%,门尼粘度高19.3%;二段混炼生产效率高3.1%,二段混炼胶比一段混炼胶门尼粘度下降幅度增大31.6%,炭黑分散性下降。串联密炼机生产混炼胶门尼粘度适宜,胶料的定伸应力、拉伸强度和拉断伸长率等物理性能提高,钢丝帘线粘合性能提高,加工性能更稳定。 相似文献
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采用液相叠层法混炼工艺制备NR胶料,研究白炭黑/炭黑并用比对NR胶料性能的影响,并与采用干法混炼工艺制备的NR胶料对比。结果表明:随着白炭黑/炭黑并用比的增大,采用两种混炼工艺的NR混炼胶的FL和Fmax均呈增大趋势,t10和t90基本呈延长趋势,采用液相叠层法混炼工艺的NR混炼胶的t90比采用干法混炼工艺的NR混炼胶略有缩短;采用两种混炼工艺的NR硫化胶的Payne效应呈增强趋势,填料分散效果变差;采用两种混炼工艺的NR混炼胶的导热性能呈下降趋势,采用液相叠层法混炼工艺的NR混炼胶的导热性能优于采用干法混炼工艺的NR混炼胶;采用两种混炼工艺的NR硫化胶的硬度、拉伸强度和拉断伸长率总体呈下降趋势,采用液相叠层法混炼工艺的NR硫化胶的撕裂强度逐渐下降,采用干法混炼工艺的NR硫化胶的撕裂强度先降低再提高再降低;采用干法混炼工艺的NR混炼胶易出现气孔现象,采用液相叠层法混炼工艺的NR混炼胶的气泡减少,炭黑团聚程度更小,分散更为均匀。 相似文献
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炼胶工艺是橡胶生产的第一道关键工序,混炼胶料质量的好坏直接影响着橡胶制品的质量和性能。橡胶混炼的质量主要取决于采用的混炼设备和相应的炼胶方法。设备和方法两者互为因果,相辅相成、密不可分。而混炼的重要性在于,一道工序决定着橡胶制品最终的质量性能,并对后续生产过程中的工艺性能也有着相当的影响。因此,常把橡胶混炼视为橡胶工业最核心的技术之一。 相似文献
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Deshang Han Yi Pan Junxiu Xue Benhui Yu Gang Yan Chuansheng Wang Kongshuo Wang Yiren Pan 《应用聚合物科学杂志》2021,138(47):51408
The function of silane coupling agent in rubber mixing field is to combine inorganic matrix with rubber organic matrix. Silica is commonly used in the rubber mixing field to strengthen rubber. The size and amount of silica aggregates in the mixing process are important factors affecting the wear of the mixing chamber. The wear of the mixing chamber would lead to a increasing gap between the mixer chamber and the rotor, which caused the mixing efficiency reducing. It also affected the dispersion effect, then affected the mechanical and physical properties of the vulcanized rubber. In this paper, the effects of rubber compound on metal friction and wear were studied by using four silane coupling agents commonly used in rubber mixing field. The experiment was carried out at 15°C, and the attention should be paid to drying during sample preparation to avoid the deviation of the experiment caused by hydrolysis of silane coupling agent. The results showed that silanization reaction occured between silica and silane coupling agent in the mixing process. The mixing temperature was usually maintained at 145 to 155°C for 1 min in the mixer, and the silanization reaction rate was the fastest during this time. We took this rubber compound as the research object and studied the friction and wear of the rubber compound on the mixing chamber in the mixing process. The products of the silylation reaction are alcohol and water. This paper studies the corrosion and abrasion of the mixing chamber by water at high temperatures. In the mixing process, abrasive wear was the main wear form, but the corrosion wear caused by high temperature steam still occupied a large proportion. 相似文献
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采用新型变间隙转子混炼短纤维/橡胶复合材料 总被引:3,自引:0,他引:3
分析短纤维/橡胶复合材料的混炼机理,针对短纤维胶料混炼特点设计新型变间隙六棱同步转子。转子棱峰与密炼室内壁间隙影响短纤维在胶料中的混合和分散以及混炼胶中短纤维的长度。新型六棱同步转子采用变间隙设计,大间隙有助于短纤维的混合,小间隙有助于短纤维的分散。采用新型六棱同步转子可改善短纤维/橡胶复合材料的混炼质量和性能,并能够提高生产效率。 相似文献
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试验研究轻质碳酸钙等量替代普通再生胶在充气轮胎轮辋实心轮胎胎芯胶中的应用。结果表明,在充气轮胎轮辋实心轮胎胎芯胶中以轻质碳酸钙等量替代普通再生胶,对胶料硫化特性、硫化胶物理性能及成品性能无不良影响,可改善胶料的混炼工艺性能,降低生产成本,减少环境污染。 相似文献
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随着胶技术的日益发展,橡胶工艺对设备就有了更高要求,为满足工艺条件、质量、效率的要求,我们要对当前的设备状况进行认真剖析、比较、探讨、总结,引进了目前先进的科学技术,对公司炼胶工段设备进行了持续改进,改进后,使设备得到了最优化的性能,满足了生产、节能、工艺、质量、效率的要求。 相似文献