共查询到18条相似文献,搜索用时 156 毫秒
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尼龙短纤维在防撕裂输送带中的应用上海胶带股份有限公司研制成功埋设尼龙纤维胶层的防纵向撕裂输送带。新型输送带所用纤维为从废旧轮胎中回收的长度为3—15mm的尼龙短纤维。在配方设计时主要考虑胶料与尼龙短纤维的粘合问题,另外因在胶料中混人尼龙短纤维比较困难... 相似文献
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研究了不同用量的预处理尼龙短纤维替代炭黑和补强树脂,对乘用胎三角胶混炼胶、硫化胶性能的影响。结果表明:采用7份预处理尼龙短纤维替代6份炭黑N660,混炼胶的门尼粘度下降,硫化速度稍慢;硫化胶的硬度保持不变,100%定伸应力提高10%左右,60℃损耗因子降低10%左右,180℃以下的动态模量保持较好,压缩生热降低2~3℃,比重降低1.5%左右,回弹提高1.5左右,但拉伸强度和拉断伸长率有所降低,且这些变化趋势随替代量的增大而增大;另外,采用15份预处理尼龙短纤维替代3份补强树脂,三角胶的硬度降低1个值,100%定伸应力提高20%左右,60℃损耗因子降低18%左右,比重降低1%左右,耐高温性能提高,但拉伸强度、拉断伸长率和撕裂强度有所降低,且这些变化趋势随替代量的增加而增加。 相似文献
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尼龙短纤维/CR/EPDM复合材料在橡胶坝袋中的应用 总被引:2,自引:1,他引:1
在90份CR与10份EPDM的并用胶中,掺入30份DN-5预处理尼龙短纤维,制备了用做橡胶坝袋外胶复合材料,试验结果表明,与目前生产的橡胶坝袋外胶相比,SFRC的拉伸强度和撕裂强度等均有很大提高,耐老化性能亦有改善。 相似文献
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研究了在农业和拖拉机轮胎胎面中,有效利用废浸胶和压延尼龙帘布,以改善轮胎抗撕裂和抗崩花性能。将废浸胶和压延尼龙帘布制成短纤维,然后以不同用量混入标准农业和拖拉机轮胎胎面配方中。研究了混炼胶在纵向和横向,即辊简方向和垂直于辊筒方向的物理和力学性能。增大纤维用量,胶料的耐磨性、硬度和定伸应力提高,拉伸强度和疲劳寿命下降。填充5份纤维的胶料.撕裂强度和抗裂口增长性能最佳。用5份压延帘布纤维等量替代炭黑的实验室试验表明,大部分物理性能得到提高,而且对加工性能没有影响。 本研究获得的积极结果表明,橡胶工业产生的这种废帘布的利用有很大潜力,从而可大大提高橡胶工业的经济效益。 相似文献
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分别以尼龙66短纤维、芳纶短纤维及聚酯短纤维作为增强剂,天然橡胶(NR)和丁苯橡胶(SBR)作为基体制备了短纤维增强NR/SBR(短纤维/NR/SBR)复合材料,采用正交实验方法研究了短纤维种类、长度及用量对短纤维/NR/SBR复合材料的拉伸性能、硬度、撕裂强度的影响。结果表明,经过浸渍处理后的尼龙66短纤维与NR/SBR基体之间的结合最为紧密;浸渍处理后的尼龙66短纤维可以有效提高NR/SBR复合材料的拉伸强度,在一定范围内,随着短纤维长度和用量的增加,短纤维/NR/SBR复合材料的拉伸强度有所提高;短纤维的加入提高了NR/SBR复合材料的撕裂强度和硬度,但扯断伸长率则有所下降。 相似文献
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采用短纤维(棉、尼龙66、聚酯及芳纶1414)与白炭黑制备短纤维增强溶聚丁苯橡胶复合材料(SFRC),研究其硫化特性、物理机械性能、纤维取向特性及破坏机理,实验结果表明:(1)短纤维使焦烧时间t10延长,加工扭矩ML、MH降低,加工流动性提高,硬度和撕裂强度提高,但拉伸强度降低;(2)聚酯纤维制备SFRC的拉升强度最大,各项异性最大,取向度最高,芳纶1414纤维制备SFRC的撕裂强度最大;(3)芳纶1414纤维制备的SFRC在拉伸速率>400mm/min时,发生屈服,出现屈服软化,并产生塑性形变,其屈服破坏机理是由于纤维界面分子间作用力弱而发生的大尺度滑移;(4)SFRC断裂破坏的主要机理是纤维与其它组分之间相互作用力的破坏,破坏形态以纤维的抽出破坏为主。 相似文献
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文中着重讨论了尼龙短纤维增强的天然,再生橡胶并用胶的硫化特性及机械性能。最小扭矩,最大、最小扭矩之差及硫化速率随着纤维的加入而加大。同样,拉伸强度及剪切强度也随之提高。但回弹性和耐磨性下降。并用胶的生热和压缩永久变形则较高。 相似文献
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用废短纤维/橡胶复合材料,按CN89105652.1技术处理制得4种SFRC母料。试验表明,其中SFRC2性能为最优,并分别与NR,BR,SBR,NBR,CR,IIR等6种橡胶并用制得的纤维增强胶料,以NR为最好;用2种橡胶比SFRC2共混可改善加工行为,其胶料可制作V带,胶管,输送带,胶鞋等制品。 相似文献
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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 相似文献
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《Polymer-Plastics Technology and Engineering》2013,52(2):239-252
Cure characteristics and mechanical properties of short nylon fiber reinforced natural rubber–reclaimed rubber blend was studied. Minimum torque, maximum–minimum torque and cure rate were increased by the addition of fiber. Tensile and tear properties were enhanced by the addition of fibers. Introduction of fibers decreased the resilience and abrasion loss. Heat build up and compression set were higher for the composites. 相似文献
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《Polymer-Plastics Technology and Engineering》2013,52(6):1139-1158
ABSTRACT Cure characteristics and mechanical properties of the short nylon fiber reinforced neoprene rubber with and without epoxy bonding agent at various fiber loadings were studied. The fiber loading was varied from 0 to 30 phr and the resin content was in the range 0 to 5 phr. Minimum torque and cure time were increased in the presence of resin. Mechanical properties like tensile strength and abrasion resistance showed an increase with resin concentration. It was found that epoxy based bonding agents enhanced the properties of short nylon fiber reinforced neoprene rubber. 相似文献
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