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试验研究间苯二酚-甲醛树脂在轿车子午线轮胎胎体胶中的应用。结果表明,在轿车子午线轮胎胎体胶中,以间苯二酚-甲醛树脂等量替代间苯二酚,并适当调整硫化体系,胶料的t10和t90缩短,硫化胶的粘合性能明显提高,同时可减少环境污染,降低原材料成本。 相似文献
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研究国产间苯二酚-甲醛树脂HT1005在全钢载重子午线轮胎钢丝粘合胶中的应用,并与普通间苯二酚和进口同类产品B-20-S进行对比。结果表明:以HT1005树脂替代间苯二酚用于钢丝粘合胶中,胶料的门尼焦烧时间和t90延长,硫化胶的物理性能和粘合性能提高,可有效解决胶料在加工过程中的冒烟问题,减少环境污染;加入HT1005树脂的胶料综合性能与加入B-20-S树脂的胶料基本相当。 相似文献
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对比两种间苯二酚改性物在半钢子午线轮胎带束层胶中的应用效果。试验结果表明,应用烷基间苯二酚甲醛树脂的配方其胶料与钢丝帘线的粘合性能优于应用间苯二酚-80的配方。 相似文献
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研究粘合树脂KOTA在全钢载重子午线轮胎带束层胶中的应用,并与间苯二酚-甲醛粘合树脂进行对比。结果表明:在全钢载重子午线轮胎带束层胶中用粘合树脂KOTA等量替代间苯二酚-甲醛粘合树脂,胶料的门尼粘度略大,焦烧时间稍短,FL和Fmax略高,硫化速率变化较小;硫化胶的密度、硬度、定伸应力、拉伸强度、撕裂强度和钢丝帘线抽出力相差不大;胶料在混炼、压延过程中的刺激性气味基本消失,烟雾量明显减小,工艺性能良好;成品轮胎的耐久性能相当;胶料成本降低。 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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利用组件技术开发化工原理实验课件,给出了系统层、组件库层和应用层的架构划分。重点讨论了组件库的设计,给出了流体阻力这一典型实验的实现描述。实践证实,基于组件技术可以提高仿真实验的开发效率。 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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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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Based on the filtration equations with account of heat transfer in the heating region, the problem of instability of small
perturbations of the wave front of filtration combustion of a gas is solved. Expressions for the growth decrement and critical
transverse size of a perturbation are obtained. The problem of the wave-front stability is solved with account of the macroscopic
redistribution of filtration in the system. The solution includes macroscopic characteristics such as the transverse size,
the width of the high-temperature zone, etc. A method is proposed for taking into account the influence of the characteristics
of the system on the evolution of perturbations. It is shown that small deformation perturbations of the front always increase
to a certain amplitude; their subsequent development— continuation of their growth or stabilization—is determined by the characteristics
of the system.
Translated fromFizika Goreniya i Vzryva, Vol. 35, No. 5, pp. 3–5, September–October 1999. 相似文献