共查询到20条相似文献,搜索用时 250 毫秒
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列举了某公司尼龙生产线己二酸装置氧化反应器搅拌在多年运行中常见的损坏形式.分析了原因,提高了对氧化反应器搅拌的重视程度,及时对其采取预防措施.这些举措延长了搅拌器的使用寿命,保证了尼龙六六盐生产线的平稳运行,减少了生产成本,提高了经济效益. 相似文献
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论述了选煤厂新型和传统的重介质悬浮液净化回收工艺的特点 ,并对两种工艺进行了分析比较 ;新型工艺的应用为选煤厂带来了较好的生产效果和经济效益 ,简化了重介选煤工艺 ,减少了介质耗量 ,节省了部分设备 ,降低了生产成本。 相似文献
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丁烯-1精馏装置在线节能优化的研究 总被引:1,自引:1,他引:0
在分析丁烯-1精馏装置运行机理与实际工况的基础上,确定了显著影响蒸汽单耗的优化操作变量,改进了装置的控制方案,提高了装置的控制水平,使各优化操作变量的控制均达到了进行优化所需的平稳程度,并实现了装置的在线节能优化,降低了装置的蒸汽单耗,收到了巨大的经济效益. 相似文献
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Synthesis and characterization of a novel epoxy resin containing naphthyl/dicyclopentadiene moieties and its cured polymer 总被引:1,自引:0,他引:1
A new epoxy resin containing both naphthalene and dicyclopentadiene (DCPD) groups was synthesized to produce a highly heat-resistant network, and the curing behavior was investigated using diaminodiphenylsulfone (DDS) as curing agent. The chemical structures were characterized with FTIR spectroscopy, NMR, MS, and GPC analyses. Dynamic curing behavior was investigated using differential scanning calorimetry (DSC). The physical properties of the resulting polymers were evaluated with dynamic thermal mechanical analyses (DMTA) and thermogravimetric analyses (TGA). The cured polymer showed great improvement in heat-resistant property including remarkably higher glass transition temperature (Tg) and thermal stability. Such properties make this new epoxy resin highly promising for heat-resistant applications. 相似文献
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A series of new epoxy resin base on 1,5-naphthalenediol were prepared to produce the heat-resistant carbon fiber-reinforced composites. The structures of the epoxy resins were characterized by Fourier Transform Infrared (FTIR) spectroscopy and Gel Permeation Chromatography (GPC) analyses. Dynamic curing behavior was investigated using Differential Scanning Calorimetry (DSC). The physical properties of the cured polymers were evaluated with Dynamic Thermal Mechanical Analyses (DMTA) and Thermogravimetric Analyses (TGA). The results showed that the cured polymer exhibited a higher glass transition temperature (Tg) of 251.1°C and better thermal stability. Such properties make the resin highly promising for heat-resistant composite applications. 相似文献
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本文研究了玻璃纤维(MW100)/聚酰亚胺树脂(BMP350)复合材料的物理性能、介电性能、耐热性能.结果表明该复合材料具有较好的介电性能与耐热性能,能够满足耐高温复合材料天线罩使用要求. 相似文献
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间乙炔基苯基马来酰亚胺改性炔丙基酚醛树脂 总被引:1,自引:0,他引:1
以不同质量比的间乙炔基苯基马来酰亚胺单体(3-APMI)和炔丙基酚醛树脂(PN)进行共聚制备了一系列间乙炔基苯基马来酰亚胺改性的炔丙基酚醛树脂(APMI-PN),希望通过引入马来酰亚胺链段赋予PN树脂更高的固化反应活性和耐热性。通过DSC、TGA、DMA、FT-IR、凝胶时间、流变分析、力学性能等测试手段对所合成的树脂及其浇注体的性能进行了研究。与PN树脂相比,APMI-PN树脂体系的固化反应活性大大提高,170℃下的凝胶时间可由140 min缩短为31.6 min或更短。固化物耐热性明显提高,玻璃化转变温度为385~474℃,起始热分解温度约为418~445℃。m(PN)∶m(APMI)=1∶1时,改性树脂(APMI-PN-1-1)复合材料的室温及400℃下弯曲强度比3-APMI体系分别提高了66%,15%,400℃层间剪切强度提高了23%,这是一种综合性能优良的耐高温复合材料基体树脂。 相似文献
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聚酰亚胺的改性及应用研究 总被引:1,自引:0,他引:1
聚酰亚胺具有突出的耐温性能,优异的电学和机械性能,是目前耐温性最高和综合性能最优异的树脂高分子材料之一。本文详细介绍了聚酰亚胺的分类、改性方法、应用及其发展动向。 相似文献