共查询到20条相似文献,搜索用时 109 毫秒
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宽基工程机械斜交轮胎胎面胶配方改进 总被引:5,自引:2,他引:3
通过提高SBR的用量对宽基工程机械斜交轮胎胎面胶配方进行改进。试验结果表明,将胎面胶中SBR的用量提高到80份,并对胎面胶配方进行适当调整,胎面胶的耐磨性能、抗刺扎性能和抗切割性能改善,尽管生热有所提高,但并不影响轮胎的实际使用性能,轮胎生产成本降低。 相似文献
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研究抗撕裂树脂HN-807在工程机械轮胎胎面胶和胎侧胶中的应用。结果表明:在工程机械轮胎胎面胶与胎侧胶中添加2份抗撕裂树脂HN-807,胶料的门尼粘度降低,工艺性能改善,强伸性能、弹性、炭黑分散性能和抗切割性能提高,生热降低,胎面胶的耐磨性能提高,胎侧胶的耐屈挠性能提高;成品轮胎的抗切割能力提高,使用寿命延长。 相似文献
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研究多种功能性石油树脂对轿车子午线轮胎和工程机械轮胎胎面胶工艺性能、动态力学性能和物理性能的影响。结果表明,采用精馏单体石油树脂NOVARES TL100的轿车子午线轮胎胎面胶动态力学性能较好,采用高纯度古马隆茚树脂NOVARES C10的轿车子午线轮胎胎面胶耐低温性能较好,采用改性双环戊二烯(DCPD)树脂NOVARES TC100的工程机械轮胎胎面胶抗切割性能较好。 相似文献
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研究粘土/天然橡胶(NR)复合材料部分替代NR对工程机械轮胎胎面胶性能的影响。结果表明:在挖掘机和自卸车工程机械轮胎胎面胶中用粘土/ NR复合材料部分代替NR后,胶料的硬度、300%定伸应力和耐热老化性能提高,抗撕裂、抗切割、抗刺扎和抗崩花性能良好。 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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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献