120目精细轮胎胶粉在轮胎胎冠胶中应用研究

通过对轮胎胎冠胶中的炭黑和120目胶粉进行变量实验,采用回归分析的方法对各项性能进行分析,得到胎冠胶中各项性能随胶粉和炭黑用量改变而变化的规律,确定了胶粉在轮胎胎冠胶中部分替代炭黑的最佳用量范围。120胶粉用量在20份以内,胎冠胶的主要性能基本不受影响。胶粉替代部分炭黑加入到轮胎胎冠胶中,不但能降低轮胎胎冠胶原材料成本,还能减轻废旧轮胎带来的黑色污染。     

胶粉在载重汽车子午线轮胎胎侧胶中的应用

通过小配合试验研究在载重汽车子午线轮胎胎侧胶中添加不同用量废旧轮胎胶粉对胶料性能的影响,通过大配合试验研究添加10份胶粉对胎侧胶性能和成品轮胎耐久性能的影响。结果表明:随着胶粉用量增大,胶料的硬度变化不大,定伸应力和拉伸强度降低,撕裂强度提高;用量在30份以下的胶粉对胶料耐屈挠龟裂性能影响不大;随着胶粉用量增大动态条件下胶料耐臭氧老化性能略有下降;添加10份胶粉的胎侧胶能满足成品轮胎耐久性能的要求。     

白炭黑对跑气保用轮胎胎侧支撑胶性能的影响

研究白炭黑等量替代部分炭黑对跑气保用轮胎胎侧支撑胶性能的影响。结果表明,用5～20份自炭黑等量替代炭黑（炭黑和白炭黑总用量65份）,胶料的加工性能和硫化特性变化不大;硫化胶的拉伸强度、耐屈挠龟裂性能、撕裂强度提高,压缩生热降低,可以更好地满足跑气保用轮胎对胎侧支撑胶的要求。     

炭黑对轮胎胎侧胶黑度的影响

研究炭黑品种和用量对轮胎胎侧胶黑度的影响。结果表明:在胎侧胶的常用炭黑中,当炭黑用量相同时,黑度大小顺序依次为:N375,N326,N330,N660;在全天然橡胶(NR)或NR/顺丁橡胶(50/50)配方中,当炭黑用量为46份时,胎侧胶的黑度达到最大值;通过调整生产配方,在保证性能的同时可以提高胎侧胶的黑度。     

常温法精细硫化胶粉在轮胎胶料中的应用研究

以常温法80目精细胶粉用于载重轮胎的胎面和胎侧胶料为例,系统考察了这两种胶料掺用胶粉后的加工性能及其硫化胶的物理性能,其中着重对胶粉在胶料中的分散状态,硫化胶各项常规物理性能以及动态力学性能等进行了试验研究和对比。结果表明,轮胎胶料中掺用80目精细硫化胶粉对其加工性能影响不大,有利于胶料的混炼操作及胎面的流动性,但用量以小于15份为宜;经精炼的胶粉还可以改善胎面胶的撕裂强度、 拉伸强度及耐磨性。     

40目活化胶粉在载重轮胎胎侧胶中的应用

在载重轮胎胎侧胶中使用４０目活化胶粉,可提高胎侧胶的龟裂屈挠和抗裂口增长性能;生胶体系采用ＮＲ／ＳＢＲ／ＢＲ（并用比为７０／１０／２０）,硫化体系调整为硫黄１．６份,促进剂ＮＯＢＳ０．８５份,活化胶粉用量可加大到１５份。采用原生产工艺,工艺性能正常,成品外观质量有所改善,胎侧胶的成本下降了０．１８元．ｋｇ＾－１。     

胶粉在轿车子午线轮胎胎侧胶中的应用

试验研究常温粉碎胶粉在轿车子午线轮胎胎侧胶中的应用效果.结果表明,在轿车子午线轮胎胎侧胶中加入胶粉和白炭黑,硫化胶拉伸性能有所降低,耐屈挠性能提高,综合物理性能变化不大;胶粉和白炭黑对胶料的加工性能和轮胎成品性能无明显不良影响.     

载重轮胎胎侧胶应用高比例合成橡胶

在胎侧胶中扩大合成橡胶用量，降低含胶率。结果表明，在载重轮胎胎侧胶中应用８５份合成橡胶及１５份胶粉是完全可行的。     

废旧轮胎裂解炭黑在载重轮胎胎侧胶中的应用

研究废旧轮胎裂解炭黑（CBp）及其化学改性品在载重轮胎胎侧胶中的应用。结果表明：在载重轮胎胎侧胶中用10份CBp等量替代炭黑N375,胶料的硬度、拉伸强度和耐屈挠性能等降低,撕裂强度和弹性提高;用10份改性CBp等量替代炭黑N375,胶料的物理性能和耐屈挠性能比添加CBp的胶料改善,综合性能与生产配方胶料基本一致。采用改性CBp的试验轮胎的高速性能和耐久性能均满足企业标准要求,同时可降低生产成本。     

热裂解炭黑N990在轮胎中的应用

对热裂解炭黑Ｎ９９０在轮胎中的应用前景进行了探讨。将非补强型热裂解炭黑Ｎ９９０应用在轮胎的胎侧、胎肩垫胶、气密层等部件中，试制了一批轮胎，并进行了耐久性能和高速性能试验。结果表明，在轮胎中用热裂解炭黑Ｎ９９０替代部分补强型炭黑，对轮胎的耐久性能和高速性能以及耐透气性能无不良影响并能改善工艺性能，降低含胶率，且可降低气密层胶的生产成本，具有实用价值。     

橡胶和轮胎的摩擦

基于摩擦学原理，重点总结干燥对摩(路)表面上橡胶和轮胎的摩擦机理和摩擦特性，分析轮胎胎面胶料的粘弹性能、行驶速度、载荷和胎面沟槽空隙率等因素对轮胎摩擦特性的影响，认为橡胶和轮胎摩擦的起因主要为粘附、滞后和磨耗。     

聚氨酯胎面——复合橡胶轮胎技术进展

随着全球低碳经济的兴起,"绿色制造"已经成为中国橡胶工业可持续发展的重要战略方针之一。加大产品结构调整,大力发展安全、节能、环保的原材料,发展新兴产品是"绿色制造"的基础。聚氨酯材料经过70多年的发展,在中国已经形成一个完整的工业体系。其生产总量已跃升为第五大合成材料,2010年产量约136万吨。广泛用于各类橡胶制     

微纳再生胶在轮胎胎侧胶中的应用

将载重子午胎胶粉通过单螺杆反应挤出获得不同再生程度的再生胶,并将其与天然橡胶和顺丁橡胶共混以替代传统典型胎侧胶配方体系中的全部软化剂及部分炭黑,考察再生胶对胎侧胶结构与性能的影响.结果表明,随着再生胶再生程度的提高,其溶胶含量增加,凝胶从几十微米演变为微纳米尺度;胎侧共混胶的硫化效率明显增大,耐老化性能和耐疲劳性能更好...     

全钢子午胎供胶装置改造

在橡胶轮胎生产企业中,通常在螺杆挤出机前供胶皮带机内设有金属探测仪装置。主要目的是为了防止胶料所含较硬的金属等杂质进入螺杆挤出机中,致使挤出机的螺杆等重要部件受损坏,失去工作能力。近年来,随着轮胎市场的扩张,胶料需求急剧增加,胶料品质非常不稳定,笔者所在公司全钢子午线H8／C6生产线每年的停车处理胶料中杂质的次数在逐渐增加。据生产部门统计,停车次数由2005年的147次、1323分钟上涨到2007年的261次、2349分钟。     

Properties of natural rubber vulcanizates containing mechanochemically devulcanized ground tire rubber

The devulcanization of ground tire rubber (GTR) was carried out with a self-designed pan-mill type mechanochemical reactor. Gel fraction and crosslink density measurements confirmed the occurrence of stress induced mechanochemical devulcanization of GTR. The partially devulcanized GTR (dGTR) was blended with virgin natural rubber (NR) at different ratios. The curing characteristics and mechanical properties of these composites were investigated and compared with those composites of raw ground tire rubber (rGTR) and NR. The results showed that the tensile properties of the dGTR/NR vulcanizates were much better than those of the rGTR/NR vulcanizates, which are comparable to or even better than the virgin vulcanizate, indicating the significant benefit of mechanochemical devulcanization. At the GTR content of 10%, the tensile strength of the dGTR/NR blends increased to 23.2 MPa from 13.7 MPa of the rGTR/NR blends, enhanced by 69% through partial devulcanization of GTR, and the elongation at break increased by 47%.     

高性能轮胎胎面胶的研究进展

综述了近些年来国内外文献,讨论了高性能胎面胶的研究进展和开发现状。评述了溶聚丁苯胺（SSBR）、集成橡胶SIBR、天然橡胶等经改性或并用后作为胎面胶的优缺点。     

Preparation of rubber composites from ground tire rubber reinforced with waste‐tire fiber through mechanical milling

Composites made from ground tire rubber (GTR) and waste fiber produced in tire reclamation were prepared by mechanical milling. The effects of the fiber content, pan milling, and fiber orientation on the mechanical properties of the composites were investigated. The results showed that the stress‐induced mechanochemical devulcanization of waste rubber and the reinforcement of devulcanized waste rubber with waste‐tire fibers could be achieved through comilling. For a comilled system, the tensile strength and elongation at break of revulcanized GTR/fiber composites reached maximum values of 9.6 MPa and 215.9%, respectively, with 5 wt % fiber. Compared with those of a composite prepared in a conventional mixing manner, the mechanical properties were greatly improved by comilling. Oxygen‐containing groups on the surface of GTR particles, which were produced during pan milling, increased interfacial interactions between GTR and waste fibers. The fiber‐filled composites showed anisotropy in the stress–strain properties because of preferential orientation of the short fibers along the roll‐milling direction (longitudinal), and the adhesion between the fiber and rubber matrix was improved by the comilling of the fiber with waste rubber. The proposed process provides an economical and ecologically sound method for tire‐rubber recycling. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 4087–4094, 2007     

Dynamic mechanical properties and flexing fatigue resistance of tire sidewall rubber as function of waste tire rubber reclaiming degree

A stepwise downsizing method of gel particles in reclaimed rubber to a micro-nano scale and its excellent dynamic performance in tire sidewall were introduced by this work. The results showed that the size of gel particles decreased from several micrometers to micro-nanometers with the increase of reclaiming degree, accompanied by reduced molecular weight and widened molecular weight distribution of sol fraction. The addition of reclaimed rubber with low Mooney viscosity improved the dynamic mechanical properties of the natural rubber/butadiene rubber blends effectively, including wet resistance and rolling resistance. Moreover, the flexing fatigue resistance has also been improved dozens of times compared to traditional tire sidewall.     

轮胎橡胶复合材料的制备方法

环氧化天然橡胶是一种对天然橡胶进行环氧化改性得到的新型聚合物,具有优异的气密性、耐油性以及良好的黏着性,同时具有良好的抗湿滑性与较低的滚动阻力,在高性能绿色轮胎的应用中有广阔的应用前景。以环氧化天然橡胶复合材料为例,探究制备方法和过程。