用于一浴浸胶的粘合活化型涤纶工业丝的开发

采用进口的粘合活化型纺丝油剂开发了适合于一浴浸胶的粘合活化型涤纶工业丝。研究了纺丝油剂的粘度随温度的变化和纺丝油剂的热失重行为以及帘线与橡胶的粘合性能。研究表明:帘线与橡胶的粘合性能随着纺丝油剂中粘合组份加入量的提高而有所提高。为了进一步改进帘线与橡胶的粘合性能,可在浸胶液中加入一定量的封闭异氰酸酯。     

聚酯帘线与橡胶粘合的研究进展

帘子线作为橡胶增强体被广泛用于轮胎、输送带、安全带、工业软管、消防水管等各个领域,而轮胎是其主要产业之一。随着轮胎子午化率的提高,聚酯帘子线(尤其是HMLS高模低缩聚酯帘子线)将逐步取代锦纶帘子线而成为橡胶轮胎骨架材料的主导。但由于聚酯帘子线表面极性低、活性基团含量很低不具有形成氢键的基团等原因,因而传统RFL(间苯二酚-甲醛-胶乳)浸胶液不能使聚酯帘子线与橡胶形成很好的界面粘结,从而在一定程度上限制了聚酯帘子线的发展。本文针对如何提高聚酯帘子线与橡胶界面的粘结强度,从聚酯帘线与橡胶粘合机理、浸胶液改进、纺丝…     

聚酯浸胶帆布在橡胶坝中的应用研究

研究聚酯浸胶帆布在橡胶坝中的应用。对锦纶浸胶帆布和聚酯浸胶帆布两种橡胶增强材料的研究表明,聚酯浸胶帆布具有断裂强力高、断裂伸长率小、耐老化、耐水性能及经济适用性好的特性。聚酯浸胶帆布作为橡胶增强材料应用于橡胶坝是可行的。     

环保型浸胶液的应用性能研究

研究环保型浸胶液(EPD)的应用性能。结果表明:EPD浸胶的聚酯、锦纶66和芳纶帘线具有良好的粘合性能及粘合表面,浸胶聚酯帘线的动态粘合性能达到常规D417+RFL浸胶聚酯帘线水平;与D417+RFL浸胶聚酯帘线相比,EPD浸胶聚酯帘线动态疲劳强力保持率和热老化粘合力保持率增大;EPD具有良好的稳定性。     

帘线浸胶试验机的应用

以实验室用帘线浸胶试验机为基础,分别用一浴法及二浴法对聚酯帘线进行浸胶,研究试验条件对帘线性能的影响。结果表明：热定型区热处理温度升高,浸胶帘线的粘合力提高;热定型区张力增大,浸胶帘线的定负荷伸长率呈下降趋势、干热收缩率呈上升趋势。     

锦纶帘子布附胶量测试方法浅谈

锦纶浸胶帘子布作为轮胎理想的骨架材料,具有强度高、耐磨、耐疲劳性好及粘合性好等优良性能。然而浸胶前的白坯帘子布表面光滑且附有纺丝油剂,与人造丝和棉纤维相比,锦纶分子链上缺少与橡胶亲和的活性基因,因此很难实现与橡胶良好的粘合,只有经过浸胶,即将白坯帘子布通过盛放有胶液的浸胶槽,使其表面附上一层胶膜,才可以获得帘线与橡胶的良好粘合能力,具有实际使用价值。就是说橡胶与帘线粘合性好坏的一个因素是帘线的附胶量。在一定范围内粘合力随着附胶量增大而提高,但附胶量达到某个定值时,粘着力不再随其增大而提高,过高反而使帘布发硬…     

聚合物帘线与橡胶粘合研究进展

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。     

基于植物多酚/多胺的芳纶帘线绿色环保浸胶体系及其 界面粘合机理研究

研究了一种基于植物多酚/多胺的芳纶帘线绿色环保浸胶体系（PTA浸胶液）,并对比PTA浸胶液与间苯二酚- 甲醛-胶乳（RFL）浸胶液浸渍处理的芳纶帘线与橡胶的粘合性能。衰减全反射傅里叶转换红外光谱和X射线光电子能谱 分析结果表明,经PTA浸胶液浸渍后,丁吡胶乳包覆在芳纶帘线表面,其含有能参与橡胶硫化的C=C键,帘线的浸渍效 果良好;与RFL浸胶液浸渍的芳纶帘线相比,PTA浸胶液浸渍的芳纶帘线的原始及热老化后H抽出力稍高,室温停放后H 抽出力保持率提高;扫描电子显微镜分析表明,PTA浸胶液浸渍的芳纶帘线与橡胶基体的界面粘合良好。     

输送带全聚酯半聚酯帆布阻燃浸胶体系的研制

文中探索了橡胶输送带阻燃叠层帆布（全聚酯、半聚酯）带芯浸胶的可行性，重点介绍了设计思路和工艺上的重要环节。     

几种胶带用聚酯和芳纶线绳浸胶技术的研究

探讨几种新浸渍材料及新浸渍方法在胶带用聚酯和芳纶长丝线绳浸胶工艺中的应用。结果表明，粘合剂IL-6减量替代一浴法浸渍液中的粘合剂RP，粘合活化聚酯长丝线绳粘合性能提高，浸渍成本降低；二浴法(第一浴浸渍液为水基环氧树脂溶液)浸渍的粘合活化芳纶长丝线绳粘合性能比一浴法好；IONOTHANE硬化剂处理的芳纶长丝硬线绳断裂强力高，耐疲劳性好，但硬度较低，浸渍成本较高；氯丁胶乳部分或全部替代RFL浸渍液中的丁吡胶乳可提高线绳的粘合性能。     

Tire cord adhesion—A TEM study

Tire cords are commonly bonded to the rubber by means of resorcinol–formaldehyde–latex (RFL) adhesives. Modified systems involving compatible first dip resins or RFL additives are required for standard polyester (PET) cords. The tire composite contains several interfaces at which adhesive failure can be initiated. However, very little is known about the interfaces between the various materials. This paper describes a method which allows ultrathin sectioning and thereby TEM studies of cord sections embedded in rubber. The studies were performed on model samples produced in the laboratory as well as cord sections cut from commercial tires. The TEM micrographs clearly demonstrate the pronounced capillary flow of the RFL solution from outer fiber surfaces to fiber interstices. This flow leads to either no RFL or very thin RFL layers at the outer filament surfaces of the cord even in the case of high RFL levels (6%) and double dipping of the RFL. A qualitative relationship between adhesion and RFL surface coverage has been demonstrated. The RFL interface to rubber, to a second RFL dip, or to predips of other adhesives is generally very distinct and its texture similar to that of the bulk RFL. Also, no evidence for diffusion of either the predip or RFL components into the fiber surface could be found. This indicates that only limited interdiffusion of the polymeric materials of RFL and rubber phases takes place. Texture differences in the RFL and rubber phases between the various tires can be used to characterize the type of system used.     

聚酯帘线与胶料粘合性能研究

研究不同预浸渍方法对聚酯帘线与胶料粘合性能的影响.结果表明,用水溶性环氧树脂和邻苯二甲酸酐或氯化亚锡作为预浸渍液,然后用RFL浸渍液处理聚酯帘线,帘线H抽出力比只用RFL浸渍液处理提高7～12 N;红外光谱分析表明,环氧树脂作为媒介与聚酯帘线表面及RFL胶层发生了化学作用;经两步浸渍处理的抽出帘线附胶量较大,粘合强度提高.     

硅橡胶与骨架材料的粘合性能研究

研究硅橡胶与聚酰亚胺纤维织物、聚酰胺纤维织物、聚酯纤维织物、玻璃纤维织物、聚四氟乙烯及金属等骨架材料的粘合性能。偶联剂VTPS、开姆洛克608、偶联剂KH-550/A-151并用体系和偶联剂A-151/间苯二酚并用体系是硅橡胶与骨架材料的良好粘合剂,能有效提高硅橡胶与聚酰胺纤维织物、聚酯纤维织物、玻璃纤维织物、聚四氟乙烯、不锈钢和铝合金的粘合强度。在骨架材料表面处理胶浆中,粘合剂含量为10%,硅橡胶与骨架材料的粘合强度较高,粘合剂增粘效果较佳。聚酰亚胺纤维类织物与硅橡胶的粘合性能很差,只有使用开姆洛克608作表面处理胶浆粘合剂,聚酰亚胺纤维织物与硅橡胶才可获得良好的粘合性能。     

耐热EPDM汽车多楔带产品的研制

以三元乙丙橡胶（EPDM）为主胶品种,骨架材料选用EPDM浸胶处理的高模量低收缩聚酯线绳,表面织物选用涤棉布,在压缩层胶料配合中加入预处理短纤维,研制出一种新型耐热EPDM汽车多楔带产品。所研制的EPDM多楔带采用四轮疲劳试验机进行动态疲劳寿命测试,运行450h停止试验,检查皮带完好,未出现任何裂纹、掉楔、起球和断裂等失效现象,并且聚酯线绳界面粘合良好,完全满足现代汽车对传动带的要求。     

Estimation of dynamic adhesion from static test results in the model cord–RFL–rubber system

Generally, nylon and polyester cords are used to reinforce rubber compounds. These composites are used in many sectors, such as tire and belt manufacturing. To increase adhesion performance a resorcinol–formaldehyde–latex (RFL) adhesive is applied on the cord, which bonds chemically to both cord and rubber and, thus, it improves both the thermodynamic work of adhesion and the loss function at the cord/rubber interface. Adhesion strength between the cord and rubber determines the performance of the system. So to study the performance of the cord–rubber system, adhesion strength must be evaluated. Cord–rubber adhesion strength can be evaluated in static and dynamic modes. The H-Pull (H-adhesion) test method is a static and relatively simple method that is usually employed to control raw material quality. Fatigue test is one of dynamic adhesion test methods that are used to determine the performance of cord–rubber interface. Some important factors such as cyclic stress and heat buildup are involved in this test procedure. To investigate the accuracy of the H-Pull test results, the cord–rubber samples were prepared using poly(ethylene terephthalate) (PET) cord and NR/SBR rubber. Then H-adhesion was determined at elevated temperatures. The adhesion strength was also evaluated in dynamic (fatigue) mode at different temperatures. Authors have proposed an equation to estimate dynamic adhesion from H-Pull test results.     

浅谈橡胶与纤维骨架材料的粘合

介绍了橡胶和纤维骨架材料粘合的基本原理,讨论了直接粘合体系和浸渍体系的应用及原理,着重介绍了目前人造丝、尼龙、聚酯和芳纶等主要橡胶用纤维骨架材料所用的粘合体系的状况。     

Investigation into the Effects of Accelerated Aging Conditions on Adhesion of Resorcinol–Formaldehyde–Latex Treated Synthetic Cords

The adhesion between the interface of synthetic fiber and rubber is achieved by coating the surface of synthetic cord with Resorcinol–Formaldehyde–Latex (RFL) adhesive solution. The strength of adhesion between fiber–RFL–rubber, depends on several factors. These include an optimum coating and curing conditions involving the control of timing, tension and temperature. Even if good adhesion is obtained by controlling the optimum conditions, the adhesion could be lost to some extend, if the RFL coated cords are exposed to indifferent and harsh ambient conditions. In this article, the adhesion behaviour of RFL dipped cord, after prolonged exposure to temperature, humidity and daylight was investigated. The adhesion was monitored by the pull out method. The analysis of the un-aged and aged cords were carried out by contact angle measurement, ATR spectroscopy and cord cross-section microscopic analysis.     

橡胶复合材料在循环载荷下的疲劳损伤特性

利用自行建立的疲劳试验系统，以单向聚酯帘线增强橡胶复合材料为对象，研究了循环载荷作用下影响橡胶复合材料疲劳性能的因素。结果表明，应力幅值和加载频率对橡胶复合材料疲劳性能影响较大，而平均应力影响较小。聚酯／橡胶复合材料的疲劳强化现象主要与组分材料本身的特性有关。     

Effects of NCO/OH Ratio and Reactive Diluent Type on the Adhesion Strength of Polyurethane Methacrylates for Cord/Rubber Composites

A series of dual curable polyurethane methacrylate-based oligomers were synthesized by changing the NCO:OH ratio and then were included in adhesive formulations using trimethylolpropane trimethacrylate and tricyclodecane dimethanol diacrylate (TCDDA) as reactive diluents. The effects of NCO:OH ratio and reactive diluent type on the structural properties of UV-cured free films and adhesion properties between polyester cord/rubber surfaces were studied. The highest adhesion strength of the 103?N?cm^?1 was obtained when the NCO:OH ratio was set as 4 and the TCDDA was used as a reactive diluent.