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子午线轮胎用纤维骨架材料的发展概况 总被引:6,自引:2,他引:6
从子午线轮胎向高速化和环保化发展的角度 ,阐述对纤维骨架材料的性能要求 ,对比分析人造丝、聚酯、锦纶和芳纶帘线在轿车和轻载子午线轮胎中的应用前景。人造丝帘线可用于高性能原配子午线轮胎的胎体帘布层 ;聚酯帘线适用于V速度级以下的轿车和轻载子午线轮胎胎体帘布层 ;锦纶 66帘线适用于轿车和轻载子午线轮胎胎体帘布层 ,特别适用于V速度级以上的轿车子午线轮胎胎体帘布层和轿车子午线轮胎的冠带层 ;芳纶帘线用于子午线轮胎带束层取代钢丝帘线 ,并用于高速轮胎、超轻量轮胎、绿色轮胎等高性能轮胎的胎体帘布层和胎圈芯等替代子午线轮胎中所有的金属部件。 相似文献
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正在2016国际轮胎展上,玛吉斯轮胎公司首次向欧洲市场推出M36+跑气保用轮胎。M36+跑气保用轮胎在干湿路面条件下均具有出色性能。该轮胎采用先进珠状填料,有助于降低轮胎生热,减小轮胎变形,确保轮胎及车轮总成的安全性,提高轮胎在零充气压力下的耐久性能,改善车辆驾乘舒适性;采用玛吉斯最新人造丝胎体帘线,提高轮胎耐热性能和耐久性能。 相似文献
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子午线轮胎胎体帘线排列方式与斜交轮胎不同,不是交叉排列,是与轮胎断面平行与胎冠中心呈90°角或接近90°角排列,由帘线周向排列或接近周向排列的带束层箍在胎体上形成一条几乎不能伸张的刚性环形带。半钢子午线轮胎胎体骨架采用人造丝或其他纤维,带束层的骨架材料采用钢丝帘线,一般而言,轿车胎都是半钢子午线轮胎,卡车胎都是全钢子午线轮胎,当然也有特殊的,例如轻卡胎,一般为半钢子午线轮胎,也有部分是全钢子午线轮胎,本文的生产工艺特指半钢轿车子午线轮胎工厂生产工艺。 相似文献
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改变欧洲轮胎生产的新型聚酯帘线JohnD.Burows著王晓冬摘译涂学忠校用聚酯帘线作轮胎的增强材料决不是件新鲜事。在美国和日本,轮胎生产商设计和生产胎体及带束层均采用聚酯帘线增强的轮胎已经有很多年了。从发展历史看,轮胎增强材料先从使用人造丝到尼龙,... 相似文献
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介绍2000年以来国(境)外轮胎剖析的骨架材料应用情况.锦纶帘线主要用于载重斜交轮胎,也用于轿车子午线轮胎的冠带层;聚酯帘线,特别是DSP帘线正逐渐替代人造丝用于轿车和轻载子午线轮胎乃至Z速度级高性能轮胎;人造丝用量正逐渐削减;芳纶纤维可代替钢丝用于高档轿车子午线轮胎的带束层和冠带层,也用于重型载重子午线轮胎胎体和工程机械斜交轮胎的缓冲层;维尼纶纤维仅在日本生产的轮胎中用于胎圈包布等小部件. 相似文献
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印度《印度橡胶杂志》2005年91卷45页报道:德国工业人造丝主要生产商Cordenka公司说,它将把其人造丝轮胎帘线的年产能提高0.15万t。扩大产能将通过现代化改造和增添新设备实现,扩大后的年产能可达到3.2万t。该公司去年曾增加0.15万t产能。Cordenka公司的年产能将逐步扩大到4万t。Cordenka公司说,高性能轮胎以及跑气保用轮胎的发展刺激了对该公司人造丝轮胎帘线的强大需求。该公司人造丝帘线的纤维素使得这种帘线耐高温高压,从而具有高性能轮胎和跑气保用轮胎所必需的尺寸稳定性。Cordenka公司扩大人造丝产能@涂学忠… 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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The miscibility of various amorphous polybutadienes with mixed microstructures of 1,4 addition units (cis, 1,4 and trans 1,4) and 1,2 addition units have been investigated. The studies here involved optical transparency, differential scanning calorimetry, and small angle light scattering. It was found that a 90 percent (cis) 1, 4 addition polybutadiene was immiscible with high (91 percent) 1,2 addition polybutadiene. Reduction of the 1,2 content to 71 percent induced an upper critical solution temperature (UCST) with the cis 1,4 polymer. Polybutadienes with 50 percent and 10 percent 1,2 contents were miscible above the crystalline melting temperature of the cis 1,4 polybutadiene. Immiscibility of the 91 percent 1,2 addition polymer was also found with a 10 percent 1,2 polybutadiene. The latter polymer also exhibits an UCST with the 71 percent 1,2 polymer. The results are used to interpret the characteristics of blends of polybutadienes of varying microstructure. 相似文献
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以F类粉煤灰为例,详细介绍了测定粉煤灰中烧失量的步骤、计算数学模型、影响测量不确定度的因素以及各项测量不确定度分量评定,人员、设备、材料、方法、环境都是影响测量不确定的因素。 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献