3×0.20+6×0.35HT钢丝帘线在全钢载重子午线轮胎带束层中的应用

研究3×0.2 0 6×0.3 5 HT钢丝帘线在全钢载重子午线轮胎带束层中的应用。试验结果表明,以3×0.20 6×0.35HT钢丝帘线替代3 9 15×0.22 0.15钢丝帘线用于10.00R20全钢载重子午线轮胎带束层,带束层安全倍数满足设计要求,工艺性能良好,成品轮胎的强度、耐久性能和高速性能均满足使用要求,同时可减小轮胎质量,每条轮胎可降低成本约30元。     

RCAD l.0系统在轮胎设计中的应用

介绍了橡胶计算机辅助设计１０系统（ＲＣＡＤ１０系统）及其在新产品１０－１５农机具轮胎设计中的应用，并与传统设计方法进行了比较。比较结果：用ＲＣＡＤ１０系统设计，机头宽度窄８ｍｍ，胎面胶用量少０４ｋｇ，且新产品设计周期从７ｄ缩短至１ｄ。     

高层级轮胎各层帘布裁断角度的计算方法

提出一种新的确定高层级轮胎内外各层帘布裁断角度的方法。根据各层帘布在成品胎内部的材料分布图和在成型机头上的材料分布图，计算该层所在的机头宽度，比较计算的机头宽度和实际的机头宽度，通过调整帘布裁断角度使两者近似相等。以此确定各层帘布的裁断角度，达到内外层帘线均匀伸张的目的。     

7.50-16 12PR轻型载重轮胎的优化设计

介绍轻型载重轮胎的优化设计。采取的主要措施是：减小轮胎外缘尺寸，外直径由８０８ｍｍ减至７９８ｍｍ，断面宽由１９８ｍｍ减至１９５ｍｍ；胎面花纹以纵向花纹为主，肩部为纵横结合花纹并加深肩部通挖花纹沟的深度，改善肩部生热；胎体帘布采用加粗减层的方法，用６层１８７０ｄｔｅｘ／２尼龙帘布代替８层１４００ｄｔｅｘ／２帘布。优化轮胎重量减轻４ｋｇ，轮胎性能符合国家标准。     

Dynamic reaction inside co‐rotating twin screw extruder. I. Truck tire model material/polypropylene blends

Waste ground rubber tire (WGRT) is a complex composite containing various elastomers, carbon black, zinc oxide, stearic acid, processing oils, and other curatives. Most of the waste ground rubber tire is composed of mainly natural rubber (NR) and styrene butadiene rubber (SBR) in varying proportions. Blending it with other thermoplastic materials is difficult due to the inherent thermodynamic incompatibility. But, the compatibility can be increased by making the reactive sites in WGRT with suitable chemicals under optimum condition of shearing inside a twin screw extruder and it is said to undergo a dynamic reaction inside the extruder. To understand the mechanism of dynamic reaction process of a rubber/polyolefin blend, the blending of a truck tire model material rubber with polyolefin was first tried before it was applied to waste WGRT material. It was observed that the blends of a truck tire model rubber material and PP thermoplastic are physical mixture of two incompatible polymers in which a continuous plastic phase is largely responsible for the tensile properties. The rubber particles are the dispersed phase. The large particle size and the poor adhesion of these rubber particles are believed to be liable for the poor tensile properties. In case of blends of truck tire model material with isotactic polypropylene the tensile properties are found to be lower than that of its PP‐g‐MA counterpart which can be attributed to the reaction of the MA with the carbon black particles. A schematic representation of the possible interactions has been proposed. The effect of addition of compatibilizers such as SEBS and SEBS‐g‐MA has also been studied. The tensile and TGA studies indicate that the polarity of SEBS and SEBS‐g‐MA induces an increase in the performance characteristics for both types of polyolefins but the intensity of this increase is higher in the PP‐g‐MA based blends. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 106: 3193–3208, 2007     

滚动轮胎温度场的有限元模拟计算

在轮胎热学稳态分析的基础上，利用有限元非线性分析功能，开发滚动轮胎温度场有限元模拟计算软件。该软件建立在以下4个假设基础上：①轮胎处于动态平衡时的稳态温度场；②将轮胎的形状看作以旋转轴轴对称；③导热系数和比热容等物性视为常数；④不计轮胎接地时以热传导形式发生的接触热量传递。实例验证表明，数值模拟计算结果与实际测试结果的变化趋势基本一致。     

有限元分析在轮胎结构设计中的应用

介绍轮胎有限元分析的基本原理。以哈尔滨工业大学开发的有限元专用软件并结合室内耐久性试验，研究轮胎整体结构优化设计理论（TECO）和平衡轮廓设计理论所设计的轮胎。有限元分析和试验结果均表明：使用TECO理论所设计的轮胎力学性能优于平衡轮廓设计理论所设计的轮胎。     

Characterisation of cut and chip behaviour for NR,SBR and BR compounds with an instrumented laboratory device

ABSTRACT

Understanding the cut and chip (CC) effect in rubber is important for successful product development for tires used in off-road or poor road conditions and for other demanding applications of rubber. This research describes a laboratory testing method for characterising the CC fracture behaviour of rubber using a device that controls and records multiple applied loads and displacements during cyclic impact to the surface of a solid rubber specimen to mimic and quantify the CC damage experienced by tire tread compounds. To study the capabilities of the instrument, three model compounds were studied that are based on carbon black reinforced compounds of common elastomers used in tire treads: natural rubber (NR), styrene-butadiene rubber (SBR), and butadiene rubber (BR). These polymers have well-established CC tendencies in field performance of tire treads, with NR exhibiting the best CC resistance followed by SBR and finally BR. The same trend was found with the rubber impact testing approach that allowed the CC behaviour to be quantified using a new physical parameter which is the CC propensity (P). The relative ranking for CC resistance for the three compounds followed the fatigue crack growth resistances of the materials but was exactly opposite to the ranking of DIN abrasion resistance. This provides evidence that CC damage from impact by mm-scale asperities and abrasion of rubber against μm-scale asperities exhibit distinct characteristics in rubber.     

模量增强剂HMZ在轮胎胎面胶和缓冲胶中的应用

研究了模量增强剂HMZ在轮胎胎面胶和缓冲胶中的应用效果。试验结果表明 ,在胎面胶中加入 1 5份模量增强剂HMZ ,不改变其它组分用量 ;在缓冲胶中加入 2份模量增强剂HMZ ,适当减小炭黑用量 ,可增大硫化胶的3 0 0 %定伸应力、邵尔A型硬度和回弹值 ;胶料的门尼粘度有所下降 ,包辊性好 ,挤出和压延性能有所改善。试制的成品轮胎 6.5 0 -1610PR的耐久性达到 15 5 4h ,速度性能达到 13 0km·h- 1 。     

白炭黑175GR在载重轮胎胎面胶中的应用

研究白炭黑175GR在载重轮胎胎面胶中的应用.回归分析试验结果表明, 白炭黑175GR与炭黑采用适当的比例并用,可使胎面胶压缩生热明显降低,抗撕裂性能和弹性显著提高,拉伸强度和拉断伸长率有所提高,抗屈挠龟裂性能有所改善.