共查询到17条相似文献,搜索用时 140 毫秒
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研究改性氯磺化聚乙烯橡胶(CSM)在无内胎轮胎气密层中的应用。结果表明,在无内胎轮胎气密层胶配方中用改性CSM部分替代氯化丁基橡胶,气密层胶的物理性能有所提高,气密性能变化不大,粘合性能有所改善,工艺性能和产品质量提高,生产成本降低。 相似文献
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研究环保空气阻止剂NM360的特性及其在半钢子午线轮胎和全钢载重子午线轮胎气密层胶中的应用。结果表明:在半钢子午线轮胎和全钢载重子午线轮胎气密层胶中加入10份空气阻止剂NM360,同时炭黑N660用量减小10份,胶料的工艺性能改善;成品轮胎的气密性明显改善,高速性能和耐久性能提高,混炼胶成本降低4%。 相似文献
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研究环保空气阻止剂NM360的特性及其在半钢子午线轮胎和全钢载重子午线轮胎气密层胶中的应用。结果表明:在半钢子午线轮胎和全钢载重子午线轮胎气密层胶中加入10份空气阻止剂NM360,同时炭黑N660用量减小10份,胶料的工艺性能改善;成品轮胎的气密性明显改善,高速性能和耐久性能提高,混炼胶成本降低4%。 相似文献
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研究丁基再生橡胶和改性氯磺化聚乙烯橡胶(MCSM)在全钢载重子午线轮胎气密层中的应用。结果表明:在气密层配方中加入丁基再生橡胶和MCSM,同时微调配方体系,胶料的硫化特性和物理性能相当,气密性提高,工艺性能良好,成品轮胎的耐久性能提高,胶料成本降低。 相似文献
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研究空气阻止剂NM360在工程机械轮胎胎侧胶和内层帘布胶中的应用。结果表明,以空气阻止剂NM360替代工程机械轮胎胎侧胶中的再生橡胶和内层帘布胶中的纳米碳酸钙,胶料的拉伸强度和拉断伸长率提高,加工性能改善,成品轮胎性能良好,生产成本降低。 相似文献
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Siemens made the first ozone generation system by corona discharge about hundred and fifty years ago. At present mainly two types of atmospheric pressure electrical discharges - corona discharge and dielectric barrier discharge are used for production of ozone. Another type of discharge, which can be used for this purpose, is multineedle to plate electrical discharge enhanced by the gas flow. Contrary to the conventional arrangement when the gas is flowing around the needles we studied the discharge in which the gas was pumped through the needles. Results of studies of ozone and nitrogen oxides production by DC electrical discharge in air at atmospheric pressure with a single hollow needle to plate electrode configuration enhanced by the flow of air through the needle for both polarities of the needle, different airflow rates and currents are presented in this paper. 相似文献
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《国际聚合物材料杂志》2012,61(4):613-623
Abstract Paper summarizes the first results of two-dimensional (2D) numerically modelled expansion and flow of compressible and non-viscous gas in typical parts of air jet weaving system: in main nozzle designed as an ejector with various shapes of the mixing zone, in relay (auxiliary) nozzle with substantial flow separation in the rash flow bend directly before the nozzle outlet and the influence of the shape of the reed dent edges on the free stream reflection and penetration through reed gaps along a real “porous” wall. Used Euler's equations are solved by a Finite Volumes Method (FVM) with automatic mesh generation and optimization of unstructured triangle mesh. Graphical results show 2D isolines of all state values of the gas, further Mach number, entropy and velocity vectors. ID profiles of all quantities along choosen cross-section or surface can be obtained, too. They give to the designer a large and quick review about the problem. The coincidence with experiment, measuring and real weaving tests is very good. The advantage of the PC using consists in the very quick, simple and user-friendly operation. 相似文献
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空气钻井地层适应性研究 总被引:2,自引:0,他引:2
空气钻井是一种特殊的欠平衡钻井技术,采用具有极大压缩性的空气作为循环介质,具有钻速高、成本低、环保性好等优势,应用越来越广泛。空气钻井地层适应性受地层出水、井壁失稳的制约。重点对空气钻井地层适应性进行研究。 相似文献