共查询到20条相似文献,搜索用时 406 毫秒
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研究氢化丁腈橡胶(HNBR)/氢化羧基丁腈橡胶(HXNBR)并用比、硫化剂过氧化二异丙苯(DCP)用量以及混炼工艺对汽车同步带胶料性能的影响。结果表明:随着HXNBR用量增大,胶料交联密度增大,耐热老化性能提高,尼龙帆布粘合力增大,有利于延长汽车同步带使用寿命;随着硫化剂DCP用量增大,胶料交联密度增大,拉伸强度和耐热老化性能先提高后降低;HNBR/HXNBR并用比为70/30、硫化剂DCP用量为7份时,胶料综合性能较好。采用开炼工艺和开炼/密炼工艺(排胶温度110℃)制备的胶料加工安全性能较好。 相似文献
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研究新型环保橡胶助剂增塑剂D810、分散剂WBP-100、助交联剂Ricobond 1756和改性酚醛树脂对氢化丁腈橡胶(HNBR)性能的影响及其在HNBR汽车同步带胶料中的应用。结果表明:增塑剂D810可有效代替传统增塑剂TOTM和TP-95用于HNBR中;分散剂WBP-100可改善HNBR的拉伸性能,提高硫化效率,在一定程度上延长HNBR汽车同步带的使用寿命;助交联剂Ricobond1756用量为2.5份可改善HNBR胶料的拉伸性能,使HNBR汽车同步带动态疲劳寿命延长约13%;新型改性酚醛树脂可有效提高HNBR胶料与尼龙帆布和玻璃纤维线绳的粘合性能。 相似文献
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使用活性氧化锌(100 nm)和标准氧化锌(1μm),利用相转移催化剂18-冠-6醚,研究减少IR和E-SBR胶料中氧化锌的用量对胶料硫化和硫化胶性能的影响.结果表明:活性氧化锌易在胶料中聚集.活性氧化锌和标准氧化锌的活性在IR胶料中比在SBR胶料中低.18-冠-6醚具有活化作用,可以催化交联反应,但会导致IR胶料硫化... 相似文献
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介绍了膏状氯丁橡胶的基本性能及在橡胶加工中的应用。膏状氯丁橡胶不仅能改善氯丁橡胶的加工性能.也能改善丁腈橡胶的加工性能,尤其对高硬度的氯丁橡胶制品效果更佳。列举了膏状氯丁橡胶在防腐衬里胶板、同步带、双面带、电缆、汽车空调管中的应用实例。 相似文献
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根据无机配合剂在橡胶中的分散形态,研究纳米氧化锌在橡胶中的作用机理及其对胶料性能的影响。在硫化过程中氧化锌作为活性剂与有机促进剂、硬脂酸、硫黄等的反应发生在氧化锌粒子的表面。以纳米氧化锌等量替代普通问接法氧化锌,可提高硫化胶的300%定伸应力和耐磨性,减小压缩永久变形,降低压缩疲劳温升;以纳米氧化锌减量50%替代间接法氧化锌,仍可保证硫化胶的性能要求。 相似文献
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I. Surya 《塑料、橡胶和复合材料》2016,45(7):287-293
A feasibility study was carried out on the utilisation of Alkanolamide (ALK) as a novel accelerator and vulcanising agent in Carbon Black (CB)-filled polychloroprene rubber (CR) compounds. The functions of the ALK were compared with those of conventional accelerator and vulcanising agents for CR, ethylene thiourea (ETU), and a combination of magnesium and zinc oxides. The ALK was incorporated into the CB-filled CR compounds at 1.0, 2.0, 3.0 and 4.0?phr. By replacing ETU, it was found that increasing the ALK loading decreased the scorch and cure times of the CB-filled CR compounds with magnesium and zinc oxides. The incorporation of up to 3.0?phr of ALK increased the torque differences, and tensile and hardness properties; and decreased those properties with further increases of ALK loadings. It was also found that ALK was able to vulcanise the CB-filled CR compound. The 3.0?phr ALK–CR compound without the ETU, magnesium and zinc oxides showed a higher tensile strength than that of the control compound, which was cured by ETU, magnesium and zinc oxides. 相似文献
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《Journal of Adhesion Science and Technology》2013,27(6):689-701
The adhesion between chlorotriazine derivative (TZ)-loaded rubber compounds and a brass-plated steel cord was studied to understand how TZ acted as an adhesion promoter. With the loading of the rubber compound with TZ, the cure rate became slow, but changes in the physical properties were not significant. An improvement in adhesion was obvious at a low TZ loading ranging from 0.5 to 2.0 phr. An adverse effect was observed with high loadings up to 8 phr and aging treatments for 15 days. Since the concentration of sulfur in the interphase of the rubber compound/ brass film adhesion samples after humidity aging was high for the rubber compound with high loadings of TZ, the acceleration of sulfide formation by TZ loading was confirmed. Lack of oxygen in the interphase indicated the conversion of zinc oxide to zinc sulfide in the rubber compound containing TZ. The control of zinc oxide formation in the adhesion interphase by TZ is suggested to be the reason for the adhesion promotion by TZ. 相似文献
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研究纳米氧化锌在全钢子午线轮胎带束层胶中的应用。结果表明:在全钢子午线轮胎带束层胶配方中,使用一定量的纳米氧化锌减量替代普通氧化锌,不仅可以改善胶料的强力,提高胶料的耐老化性能,而且可以提高胶料的粘合性能,降低生热;使用2份纳米氧化锌替代5.5份普通氧化锌时效果最佳。 相似文献