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试验研究帘线-橡胶复合材料的压缩失效模式.结果表明,帘线-橡胶复合材料在较小的循环压缩负荷下即可发生破坏;高分子材料分子内摩擦产生的高温对材料性能的影响远超过环境温度的影响,采用低滞后高分子材料对提高帘线-橡胶复合材料的抗压缩性能有利. 相似文献
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用矩形斜交结构橡胶帘布试样研究了橡胶帘线复合材料在不同负荷条件下的行为.通过对三种不同线径橡胶帘布片(系统1、2、3;d1<d2<d3,帘线与试样拉伸轴的夹角ψ=20°、45°和90°)的试样进行拉伸试验,分别记录20%、30%、40%和50%变形条件下的应力、拉伸强度及伸长率.用统计法全面记录通过帘线截面的全部应力.在20%~28%的变形范围内,所有被研究的试样到破坏为止的次数值都相近似.橡胶帘线复合材料等级的划分实质上取决于使用条件和帘线中间橡胶的应力应变状态.橡胶钢丝帘线复合材料则应当按照疲劳试验结果,而不是根据静态试验的结果来划分等级. 相似文献
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聚合物帘线与橡胶粘合研究进展 总被引:15,自引:2,他引:13
从测试与分析方法、纤维与粘合剂的界面粘合、浸胶帘线与橡胶的粘合、间苯二酚-甲醛-胶乳浸胶层的物理机械性能等方面总结了人造丝、尼龙、聚酯和芳香聚酰胺等聚合物帘线与橡胶的粘合方法及最新进展。 相似文献
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介绍芳纶纤维的性能和研究现状、芳纶纤维复合材料的应用以及芳纶复合帘线的开发和性能改进。芳纶纤维具有多种独特性能,国内外对芳纶纤维进行了广泛研究,芳纶纤维制备与应用技术难题不断被攻克,芳纶纤维的应用越来越广泛。芳纶纤维生产现主要集中在美国、日本和欧洲,近年来我国芳纶纤维的产业化发展迅速。芳纶纤维复合材料在军用和民用领域均得到广泛应用。芳纶复合帘线主要分为合股复合帘线和芯皮结构复合帘线。芳纶复合帘线改进的性能主要有耐压缩疲劳性能、拉伸性能和粘合性能。 相似文献
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本文研究了PEN、PET 1100dtex、1670dtex纤维的原丝性能、捻线帘线性能、浸胶帘线性能。对浸胶后帘线进行了模拟硫化、蠕变、弯曲疲劳和粘合性能测试。浸胶PEN纤维帘线弯曲疲劳性能表现差之外,PEN纤维在原丝、捻线帘线、浸胶帘线保持更好的尺寸稳定性、更高的模量。PEN纤维浸胶帘线与橡胶具有良好的粘合性能。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(5):365-376
The adhesion of polyvinyl alcohol (PVOH) cord and fabric to different special purpose rubbers has been studied with a view to making use of the textile in various applications such as in gaskets, diaphragms, and other industrial molded goods. Adhesion was measured with both raw and chemically treated cords and fabrics, and in the presence of hydrated silica-resorcinol-hexamethylenetetramine (HRH) dry-bonding agents. The pull adhesion strength of the PVOH cable cord (untreated) to EPDM rubber and polyurethane rubber improved significantly on incorporating HRH dry-bonding agents. However, for chemically treated cords the bond strength improved for EPDM rubber but decreased marginally for polyurethane rubber. The peel adhesion strength of the PVOH fabric (both raw and chemically treated) improved slightly with the introduction of dry-bonding agents for all the rubbers studied except nitrile rubber. The physicomechanical properties and aging characteristics of the rubber vulcanizates in the presence of the dry-bonding agents are reported. 相似文献
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NR composite and PET cord-inserted NR composite were prepared to investigate the contribution level for permanent deformation of fabric cord-inserted rubber composite by thermal aging. The degree of deformation of the PET cord-inserted NR composite was much larger than that of the NR composite without cord. The level of the contribution of the PET cord part on the permanent deformation was much larger than that of the rubber part for the thermal aging below 70 °C. The experimental results were explained by the increased crosslink density change of the rubber part and increased crystallinity of the PET cord part. 相似文献
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考察了N,N'间-苯撑双马来酰亚胺(PDM)的用量对橡胶-镀锌钢丝粘合性能的影响,结果表明:PDM的加入能显著提高橡胶与镀锌钢丝的粘合性能;当PDM用量为1份左右时,老化前后粘合性能最好;PDM的加入改善了硫化胶的力学性能,同时表现出良好的抗硫化返原性和抗疲劳性能。 相似文献
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介绍轮胎用锦纶66帘布压延过程及其工艺控制、压延帘布常见质量问题及其解决措施。严格控制热炼胶塑性值和供胶温度、保证原帘布干燥、导开帘布松紧一致、帘布对中、供胶和递布稳定、帘布压延张力和压延速度合理和均衡、压延机辊温和帘布冷却辊温稳定、压延机积胶量适当、压延帘布卷取协调性好,以及严格工艺操作,可以有效解决压延帘布幅宽和厚度不合格、扒皮、露白、罗股、劈缝、跳线、出兜、压坏和褶子等质量问题。 相似文献
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Polymer adhesion and its evaluation are important from academic and industrial points of view. Today cords are used to reinforce rubber in various products. Cord–rubber adhesion can be evaluated using static and dynamic methods. The static methods are commonly used for qualification of raw materials. These methods are not suitable for prediction of durability of the cord/rubber system in real conditions. The dynamic adhesion tests (e.g., fatigue method) involve some important parameters to simulate the real conditions of cord/rubber composite usage. So they produce reliable results in comparison with static adhesion results. Increase in temperature of cord/rubber system occurs during utilization of product. Adhesion usually decreases with increasing temperature. So the static adhesion test (e.g., H‐pull test) results that are measured in the ambient temperature (23 ± 2°C) cannot be considered as the composite's performance in the utilization condition. Although heat build up occurs in the test samples during the fatigue test procedure, but this is not enough to illustrate the decreasing effect of the increased temperature on the results. The authors produced a heat chamber to improve the dynamic test. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2488–2494, 2006 相似文献
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