共查询到19条相似文献,搜索用时 896 毫秒
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采用半预聚法,合成了灌注式实心轮胎用聚氨酯原液,比较了不同聚醚多元醇和扩链剂对材料性能的影响,确定了预聚体的NCO含量和异氰酸酯指数,研制出邵A硬度为1040的系列产品,满足不同硬度灌注式聚氨酯实心轮胎的填充要求。 相似文献
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正2014年6月3日,黎明化工研究设计院有限责任公司(以下简称黎明院)主持开发的轮胎填充用聚氨酯材料成功应用于工程车、采矿车等大型工程机械轮胎,并经受住各种复杂环境的考验。这一国内首创的新工艺聚氨酯材料已达到国际先进水平,打破了此前国外公司在轮胎填充用聚氨酯材料领域的垄断。据介绍,该公司开发的轮胎填充用聚氨酯材料综合成本低,价格优势明显,轮胎在使用过程中不会发生爆胎或漏气现象,使用安全且可节省大量维修费用。实际应用显示,采用该材料制作的轮胎回弹性好、形变恢复快,滞后生热少,使用寿命长,减震性能好,特别适于制造大型工程机械轮 相似文献
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黎明化工研究设计院有限责任公司(以下简称黎明院)主持完成的国家科技部科研院所技术开发研究专项资金项目——"轮胎填充用聚氨酯(PU)材料的研究及应用"新技术,已广泛应用于工程车、采矿车等大型工程载重车辆轮胎领域,打破了目前轮胎填充用聚氨酯材料进口垄断,该产 相似文献
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聚氨酯弹性体既有橡胶的高弹性,又有塑料的高硬度和高强度,其耐磨性能卓越,具有较高的机械强度和优异的耐油、耐化学药品、耐屈挠、耐低温性能。聚氨酯轮胎滚动阻力低,有利于降低汽车燃油消耗;耐磨性能提高数倍,使用寿命长;胎面材料中不含炭黑和橡胶填充油,磨损时不会污染空气和土壤;废旧轮胎部分可以回收用作其他聚氨酯产品,不会造成环境污染。聚氨酯弹性体是制造绿色轮胎和轮胎绿色制造的理想材料。 相似文献
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《精细化工原料及中间体》2016,(1)
正聚氨酯弹性体既有橡胶的高弹性,又有塑料的高硬度和高强度,其耐磨性卓越,具有较高的机械强度和优异的耐油、耐化学药品、耐屈挠、耐低温性能。聚氨酯轮胎滚动阻力低,有利于降低汽车燃油消耗;耐磨性能提高数倍,使用寿命长;胎面材料中不含有炭黑和橡胶填充油,磨损时不会污染空气和土壤;废旧轮胎部分可以回收用作其他聚氨酯产品,不会造成环境污染。聚氨酯弹性体是制造绿色轮胎和轮胎绿色制造的理想材料。 相似文献
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刘道春 《化学推进剂与高分子材料》2012,10(5):46-52
根据聚氨酯材料在轮胎产业中的发展现状,论述了聚氨酯轮胎的研制及其应用材料,分析了聚氨酯轮胎的性能优势,展望了聚氨酯轮胎的市场前景,同时指出了聚氨酯轮胎的未来发展趋势。 相似文献
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轮胎工业用填充材料及填充体系 总被引:1,自引:0,他引:1
用炭黑作为补强材料已经伴随着橡胶工业,特别是轮胎工业发展了一个多世纪。由于聚合物复合材料的蓬勃发展和橡胶原材料市场的剧烈竞争以及人们对轮胎性能要求的不断提高,促进了填充材料的使用日益扩大,发展迅速。因此,增加填充材料的品种和来源,控制填充材料的质量和提高填充材料的性能以及改进填充体系具有非常重要的意义。 相似文献
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《玻璃钢/复合材料》1989,(4)
一家中国与美国加州UTI化学公司合资的企业,使用聚氨酯填充发泡及离心浇铸工艺生产自行车无气轮胎。这种轮胎性能十分接近充气轮胎。目前这家合资企业已生产了180000个无气轮胎。所用的聚氨酯是由美国Mobay公司 相似文献
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含白炭黑胎面胶的混炼 总被引:1,自引:0,他引:1
以白炭黑作填充剂的轮胎具有滚动阻力低等优点。但是白炭黑在橡胶中不易分散。介绍了为提高含白炭黑的胎面胶的混炼质量,加速白炭黑在轮胎中的推广应用而采取的原材料、混炼工艺和混炼设备。 相似文献
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骨架材料是制造轮胎的重要材料,其所起的作用是:保持轮胎形状和尺寸的稳定性,抗机械损伤和支承负荷;骨架材料应满足轮胎所需的耐疲劳、耐冲击、抗变形等性能要求;骨架材料还对轮胎的乘坐舒适性、噪音、高速性能、滞后性能、脱层和寿命有重要影响。笔者拟对轮胎用纤维骨架材料的现状、发展前景及其今后的研究课题作论述。 相似文献
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Rubber particles from tires out of use (TOU) were used to modify an epoxy-based thermoset. The effect of size and particle content were evaluated. Three bending point and Charpy tests were carried out to study the mechanical behavior of the materials. A steady decrease in the critical stress intensity factor, KIc, with the content of TOU was observed, being attributed to the fact that the particles might also act as defects in the polymer matrix. Fractographic analysis confirmed that filled specimens showed localized shear yielding at the end of the particles along the crack propagation direction. No signs of cavitation mechanism were found on the surfaces of fracture, evidencing an extraordinary interfacial adhesion. The total energy absorbed at break increased as the size of TOU particles decreased, pointing out that particle size is crucial for the performance of these materials. Matrix yielding and plastic deformation were considered to be the main toughness mechanisms. 相似文献
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A. Torr -Palau J. C. Fern ndez-Garcí a A. C. Orgil s-barcel M. M. Pastor-Blas J. M. Martí n-martí nez 《The Journal of Adhesion》1997,61(1):195-211
Fumed silica is a well-known mineral filler of epoxy and polyurethane adhesives. Although effective, the small particle size and the relative high cost of fumed silicas suggest the need for an alternative filler. In this study, the usefulness of adding a natural hydrated magnesium silicate (sepiolite) as a new filler in solvent-based polyurethane (PU) adhesive formulations has been demonstrated. The rheological and adhesion performance of the sepiolite-filled PU adhesive was compared with that in PU adhesives containing fumed silicas. The addition of a filler to PU adhesives provided an increase in viscosity, imparted thixotropy and pseudoplasticity to the adhesive solution, produced an increase in storage and loss moduli, and improved the rheology of the PU. The mechanical properties of adhesive films were increased by adding filler, mainly with fumed silica. On the other hand, the immediate T-peel strength of roughened or (roughened + chlorinated) styrene-butadiene rubber/PU adhesive joints was greatly improved in filled PU adhesives. The effects produced by adding sepiolite or fumed silica to the adhesives were very similar, although in general more noticeable in fumed silica filled PU due to the formation of hydrogen bonds between the filler and the solvent and/or the polyurethane (in sepiolite-filled adhesives, van der Waals forces seemed to be responsible for the interactions between the filler and the solvent and/or polyurethane). 相似文献
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R. K. Idiatulov Yu. P. Nekrasov A. V. Genis T. I. Samsonova L. V. Polyakov G. S. Kabanova I. F. Babich 《Fibre Chemistry》2011,43(1):75-79
We have studied the effect of elastomer additives on the properties of spin dopes for obtaining filled fiber materials by
aerodynamic spinning from polymer solutions. We have obtained laboratory samples of materials with different polyurethane
content. We have analyzed the results of physicomechanical, sorption, and physical tests of these materials. We show that
modification of filled fiber materials by introducing elastomeric additives has only an insignificant negative impact on the
sorption properties and markedly improves their physicomechanical characteristics. 相似文献