芳纶帘线——轻型载重子午线轮胎理想的胎体骨架材料

采用芳纶帘线替代普通聚酯帘线进行轻型载重子午线轮胎的生产，并将两种化胎性能进行了对比。结果表明，采用芳纶帘线生产的轮胎静负荷性能、耐外性能、强度性能及高速性能等均可达到普通聚酯帘线轮胎的水,轮胎的刚性、转向能动性和驾驶性能提高，而且还可提高生产效率，同时减小了轮胎质量，节约了成本。     

外胎外观质量与B型双模定型硫化机的关系

结合４２ｉｎＢ型双模定型硫化机，分析了轿车子午胎的胎趾不全、胎里夹沟、钢丝圈上抽、欠硫、胎体变形、胎冠胶边、胎里起凸及胎圈弯曲等外观质量问题，主要探讨了硫化机设备对外胎外观质量的影响并提出了解决措施。     

Properties of silica/clay filled heavy‐duty truck tire thread formulation

A tire thread formulation for heavy‐duty trucks containing SBR/BR rubber blend and varying proportions of silica/clay fillers including a silane‐coupling agent have been investigated. The various mixes were compounded in a Banbury ‘O’ mixer and vulcanized using the EV‐system. Silica/clay (80/0) served as the control mix. The oscillating disc rheometer (ODR) was used in determination of cure characteristics. Substitution of silica (80 phr) with china clay up to 40 phr increased the cure rate of the rubber blend mixes as well as their maximum torque level (T_max). T_max was observed to be highest at a filler blend ratio of 40/40 phr. Synergism between silica and clay at this filler blend mixture is suggested to be responsible for the observation. The heat buildup was reduced from 43 to 20°C as the clay content increased. Results also showed that the rubber blend compound containing silica/clay (60/20) filler blend in the stated ratio exhibited the best balance of properties in the critical parameters such as the absolute torque level (69.5 dNm), heat buildup (39°C), and abrasion resistance (0.574 mg.loss/1,000 rev). The rate of depreciation of abrasion resistance of rubber blend compound as the clay content increased was found to be 0.035 mg loss/1,000 rev as silica is substituted with one part of china clay phr. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1024–1028, 2004     

芳纶-RFL-轮胎橡胶体系性能增强研究

简要介绍了芳纶的典型结构、性能及在轮胎中的应用。重点阐述了增强芳纶帘子线/轮胎橡胶体系性能的途径及国内外研究进展:中国、美国、德国、日本和欧洲一些国家对该领域进行较深入地研究,主要是通过芳纶表面、轮胎橡胶和间苯二酚-甲醛-胶乳体系(RFL)3方面的改性来增强芳纶-RFL-轮胎橡胶体系性能。     

汽车轮胎胎面磨损程度检测系统

汽车轮胎的安全性直接关乎交通安全和乘客的出行安全, 轮胎异常磨损容易导致爆胎, 严重磨损的轮胎时刻威胁着乘客的生命安全, 汽车在道路上飞驰的过程中主要磨损的是轮胎的胎面, 因此实现自动化的轮胎磨损检测很有必要. 本研究借助Visual Studio 2017开发平台, 采用C++编程, 使用OpenCV计算机视觉库的API接口结合自主编程的处理顺序, 实现了对轮胎图像的自动采集传输和处理分析, 该系统能精准提取轮胎胎面图像, 并通过分析胎面图像的灰度共生矩阵的特征值判定轮胎的磨损程度, 实现了针对轮胎胎面磨损的自动化检测系统.     

通用型汽车胎压胎温监测系统研究

汽车轮胎压力监测系统(TPMS)是行车安全的关键,是汽车安全课题中的热点。基于无线胎压监测系统无需对现有车辆进行任何改造,安装调试方便快捷的需求,研究了基于无线传输的通用型汽车胎压胎温监测系统。设计了一种高灵敏度的无线传输方案,使得系统工作在ISM频段发射模块和接收模块相距35米时误包率低于1‰,且数据采集发射模块的温度压力测量精度不低于±2%FS,实现了远距离、高精度的无线传输。重点解决了卡车等大型车远距离无线数据有效传输问题,并提出了一种纯软件的轮胎定位方法,方便了系统的初装和更换。有效地防止轮胎爆胎,节省轮胎磨损,有良好的应用前景。     

某SUV车型低雾化冷凝备胎盖板总成的开发制造

汽车内非金属装饰材料如皮革、塑料、纺织物以及粘结材料的胶粘剂等,都含有一些挥发性物质,尤其是在阳光的照射下,车内温度升高,会加剧这种挥发。挥发气体在汽车窗户或挡风玻璃上凝结,造成视线不良,会影响驾驶者的视线和行车安全;还有些挥发物质（苯、甲苯、乙苯、二甲苯、苯乙烯、甲醛、乙醛、丙烯醛、丙酮、丁酮等）会对人体有害,影响驾乘者的身体健康。为了合理控制挥发性物质的产生,对用于汽车内饰的材料进行雾化试验是十分必要的,雾化冷凝值超出标准指标的材料将不可以用于汽车内饰。本文主要阐明了备胎盖板总成雾化冷凝主要来源,并针对其来源给出低雾化冷凝汽车备胎盖板开发制造的建议。     

Effect of rubber particle modification on properties of rubberized concrete

To improve the combination of cement matrix and waste tire rubber particles in concrete, the rubber particles were treated with acrylic acid（ACA） and polyethylene glycol（PEG） for grafting hydrophilic groups on their surfaces. The X-Ray photoelectron spectroscopy（XPS） and surface contact angle were used to characterize the hydrophilicity and surface functional group of rubber particles. The effect of rubber particle modifi cation on fresh/hardened properties of rubberized concrete was studied. The experimental results show that the contact angle between rubber particle surface and water decreases when rubber particle is modifi ed. Compared with the unmodifi ed rubberized concrete（RC）, the unit weight of modifi ed rubberized concrete（MRC） changes slightly. However, the slump, air-entrainment, compressive strength, flexural strength, and impact performance of MRC are obviously improved. Under good condition of slump, the water-cement ratio of the MRC can be reduced from 0.4 to 0.38. And the compressive strength and fl exural strength of the MRC（10% rubber particle content） can be increased by 25.9% and 26.4%, respectively.     

基于机器视觉的轮胎胶料表面字符识别

针对目前轮胎胶料表面的5×7点阵喷码字符人工识别存在劳动强度大、效率低、智能化水平低等问题,提出了一种基于机器视觉的轮胎胶料表面字符识别方法,首先利用字符出现区域较为稳定且字符为黑底白字进行快速定位与背景分割、形态学操作消除干扰;然后创新性地运用简化垂直投影法配合字符宽度的阈值限制,并对"1"和"I"与其他字符宽度不同的特殊情况进行处理,实现字符分割;最后,采用基于标准相关匹配的模板匹配方法实现字符识别。实验结果表明,所提方法的字符识别准确率达到99.51%,达到了预期的识别效果。     

废旧轮胎粉碎技术及其应用进展

世界各国的废旧轮胎数量日益增加,废旧轮胎堆放不仅造成环境污染,还导致橡胶资源浪费,对废旧轮胎进行合理的回收利用已经势在必行。现阶段,粉碎废旧轮胎以制备胶粉因工艺优势而成为废旧轮胎的主要回收方式。综述国内外粉碎废旧轮胎制备胶粉技术,详细介绍干法粉碎和湿法粉碎技术及相关工艺,其中干法粉碎包括常温和低温粉碎,湿法粉碎主要包括RAPRA法、常温浸混粉碎法、全水相法和高压水射流冲击粉碎法。对主要粉碎设备及其粉碎原理进行概述。指出全水相法因制得的胶粉性能更加优异,且工艺成本低及环保性表现突出,有望成为未来废旧轮胎粉碎技术主要发展方向。