共查询到19条相似文献,搜索用时 106 毫秒
1.
2.
不溶性硫磺是高质量子午线轮胎的专用硫化剂,近几年国内外正在开发利用低温液相法制备不溶性硫磺.本文主要探讨了反应条件对不溶性硫磺产率及含量的影响,从而选择适宜的生产工艺. 相似文献
3.
《精细化工原料及中间体》2005,(1):51-51
随着高速公路日益普及,子午线轮胎需求量日益增大。不溶性硫磺是生产子午线轮胎的主要原料之一,是其他硫化剂不能替代的产品。目前国内不溶性硫磺生产能力不足5000t/a,市场容量较大。 相似文献
4.
介绍了不溶性硫磺作为橡胶的硫化剂在子午线轮胎生产中的广泛应用,并对不溶性硫磺的开发前景、生产工艺及其技术条件和预熔温度、淬冷液的选择、萃洗剂的选择等方面作了较详细的讨论。 相似文献
5.
较详细地介绍了子午线轮胎用不溶性硫磺的开发与应用情况。分别从硫磺的同素体结构和制备方法几个方面加以论述。 相似文献
6.
较详细地介绍了子午线轮胎用不溶性硫磺的开发与应用情况。分别从硫磺的同素体结构和制备方法几个方面加以论述。 相似文献
7.
不溶性硫磺的应用及生产工艺研究 总被引:11,自引:0,他引:11
介绍了不溶性硫磺作为橡胶的硫化剂在子午线轮胎生产中的广泛应用,并对不溶性硫磺的开发前景、生产工艺及其技术条件和预熔温度、淬冷液的选择、萃洗剂的选择等方面作了较方面的讨论。 相似文献
8.
不溶性硫磺生产现状与市场分析 总被引:1,自引:0,他引:1
不溶性硫磺是普通硫磺的高聚合形态同素异构体和高分子改性品种,作为一种重要的橡胶硫化交联剂,在轮胎工业中应用潜力巨大,开发生产这种硫磺深加工产品,符合循环经济发展的理念,可大幅提高普通硫磺产品的附加值和市场竞争力。本文介绍了汽化法、熔融法和接触法3种不溶性硫磺的工业化生产方法,简述了当前不溶性硫磺在国内外的发展趋势及主要应用领域,对其产需现状的分析说明不溶性硫磺具有广阔的市场前景,面临重大的发展机遇。 相似文献
9.
10.
11.
12.
从配方及硫化工艺角度分析了载重斜交轮胎在实际使用中耐磨性差的原因,认为胎面胶生胶体系采用NR/BR/SBR三胶并用体系,软化剂采用芳烃油,补强填充剂采用新工艺炭黑N234,加工助剂采用新型加工助剂及通过强化轮胎硫化测温来确定最佳硫化工艺条件可提高载重斜交轮胎耐磨性,试验结果表明,采取这些措施可使9.00~20 16PR载重斜交轮胎总行驶时间和总行驶里程均提高16.9%,11.00-2018PR轮胎 相似文献
13.
E. D. Farlie 《应用聚合物科学杂志》1970,14(5):1127-1141
The physical creep of unfilled natural rubber vulcanizates, prepared with different vulcanizing systems, has been studied. For each of the three vulcanizing systems chosen there is a strong dependence of creep rate on crosslink density, but the rates for accelerated sulfur vulcanizates are two or three times higher than those of peroxide vulcanizates of similar crosslink density. Supplementary experiments, in which the crosslink structure of sulfur vulcanizates is modified either by chemical treatment or by variations in the vulcanizing conditions, show that the nature of the crosslink itself is not a determining factor in the type of vulcanizate. Other features, such as the type and quantity of extranetwork material arising from the vulcanizing process, contribute significantly to the viscoelastic behavior of accelerated sulfur vulcanizates. 相似文献
14.
介绍LLY—B1665×4580×2A载重子午线轮胎侧板式液压硫化机的设计。该硫化机主要由主机结构、装卸胎机构、液压系统、电气控制系统、硫化管阀系统等组成。该机主构架采用独立单元的侧板框架结构,加压装置的4个油缸在圆周方向上均匀分布,开合模、加压、活络模驱动及装卸胎机械手和中心机构运行等操作均采用油缸驱动,液压系统功率匹配合理、经济。 相似文献
15.
为解决轮胎硫化过程中各部位温差大、硫化不均匀、一些部位出现过硫化和外温管道加热不均匀的情况,试验一种新型中心机构和新型硫化模具。优化中心机构的结构和喷射角度,对现有模具外温加热管道进行调整,改变现有模具安装方式,并对模具结构和外温管道进行优化。利用新型中心机构和新型模具能够有效减小硫化过程中轮胎各部位温差,提高轮胎硫化均匀性,缩短轮胎硫化时间,提高轮胎质量。 相似文献
16.
介绍我国液压硫化机的生产和发展概况。液压硫化机具有精度和自动化程度高、基本无易损件、硫化轮胎均匀性好、运行成本低等优点,是轮胎硫化机的发展方向。我国液压硫化机生产企业近20家,年生产能力和年需求量均约1200台,已初步形成产业化规模。 相似文献
17.
Vulcanizing reagent (VR) suspensions with different sulfur additions were mixed with CNTs suspensions and SBR latex, and then powder CNTs/SBR (PSBR) composites were prepared by spray‐drying process. Investigations showed that VR additions have significant influences on the properties of CNTs/PSBR composites. With the increment of VR additions, glass transition temperature (Tg) of the composites increased gradually, and reached the maximum when the sulfur addition was 4.0 phr, and then it would decrease if the sulfur addition continued to rise. The elongation at break of the vulcanizates decreased linearly. The tensile strength and hardness reached the maximum when the sulfur addition was 4.0 phr, and almost kept constant when the addition continued to rise. Yet the tear strength reached the maximum when the addition was of 2.5 phr, and then decreased slightly when the addition exceeded 4.0 phr, which was corresponding to the structure designability of the composites affected by the sulfur aggregates in the matrix. Under different temperatures, when the vulcanizing temperature was 150°C, the vulcanizing speed was proper, vulcanizing time was prolonged, and the vulcanizing security was intensified. Compared with the vulcanization of carbon black/PSBR composites, more sulfur additions are needed in the vulcanization of CNTs/PSBR composites. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007 相似文献
18.