共查询到20条相似文献,搜索用时 78 毫秒
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借助恒压型毛细管流变仪、恒速型毛细管流变仪分别研究了镧系硬脂酸盐及聚乙烯蜡润滑剂对HDPE6098挤出流变性能的影响。结果表明,镧系硬脂酸盐及聚乙烯蜡润滑剂可改善HDPE6098的挤出性能。特别是在HDPE6098中分别加入1.5 phr硬脂酸镧/2 phr聚乙烯蜡,3.5 phr硬脂酸铈/3 phr聚乙烯蜡润滑剂后,熔体在0.25MPa剪切应力下,剪切速率由4 770 s-1分别增至14 039 s-1与21 271 s-1,分别提高了190%与346%。 相似文献
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两种聚乙烯蜡对石蜡物理性能的影响 总被引:1,自引:0,他引:1
通过加入不同牌号的聚乙烯蜡调合出物理性能优于58#基础石蜡的改性石蜡,提高蜡的滴熔点、硬度、粘度,改变石蜡的微晶结构,并加以对比。 相似文献
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界定PEW的两层含义;在分析Office理论教学现状和存在问题的基础上,揭示PEW高效管理工具真正融入化工企业管理工作的教学深化研究的意义;提出PEW真正融入化工企业管理工作的教学深化研究应更多侧重实际案例教学,强化学员操作能力,提升管理效率;最后说明PEW融入管理工作的教学所取得的成果。 相似文献
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聚乙烯蜡的微波辐射接枝反应研究 总被引:3,自引:2,他引:1
研究了聚乙烯蜡(PEW)与马来酸酐(MAH)的微波辐射接枝反应。考察了引发剂配比及种类、单体配比、辐射条件等对接枝反应的影响,通过正交实验应用多元线性拟合得出了酸值与接枝条件的经验式,制提了酸值为75mgKOH/g左右的接枝聚乙烯蜡(MPEW)。IR、DSC等测试结果表明,微波辐射确实能使PEW与MAH的接枝反应发生。 相似文献
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Optimal preparation of inkjet ink should be possible through the elucidation of the relationship between dye/additive interactions and ink performance. In the present study, the interactions between the dyes and surfactant additives were investigated. To investigate the physical properties of the surfactants used, the critical micelle concentration (cmc) and the aggregation number (N) were determined using electron spin resonance, static light-scattering, and fluorescence spectroscopy. On the basis of the cmc and N values, the visible absorption spectra of aqueous acid dye solutions (C. I. Acid Red 88, 13, and 27) containing surfactants (i.e., Surfynol 465 (S465), octaethylene glycol monododecyl ether (OGDE), and sodium dodecyl sulfate (SDS)) were measured. From the dependence of the spectra on the surfactant concentration, the binding constants, K(bind), of the acid dyes with the surfactant micelles were calculated: the K(bind) values decreased in the order of C. I. Acid Red 88 > C. I. Acid Red 13 > C. I. Acid Red 27, which correlates with the number of sulfonate groups. For all the dyes, the K(bind) values with the nonionic surfactants, S465 and OGDE, were much larger than those with the anionic surfactant, SDS. The thermodynamic parameters of the binding, i.e., the enthalpy change, ΔH(bind), and entropy change, ΔS(bind), were determined via the temperature dependence of the binding constants. The positive ΔH(bind) value for S465 indicates an endothermic binding process, while the negative ΔH(bind) values for SDS and OGDE indicate exothermic binding processes. 相似文献
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Jiang B Liu W Bai Y Huang Y Liu L Han J 《International journal of molecular sciences》2011,12(8):5422-5427
Preparation of recording coating on inkjet printing (RC-IJP) media was proposed. The microstructure and roughness of RC-IJP was analyzed by scanning electron microscopy (SEM) and atomic force microscope (AFM). The surface infiltration process of RC-IJP was studied by a liquid infiltration instrument. The distribution of C, O and Si composites on recording coating surface is analyzed by energy dispersive spectrum (EDS). The transmission electron microscopy (TEM) analysis showed that the nanoscale silica could be dissolved uniformly in water. Finally, the print color is shown clearly by the preparative recording coating. 相似文献
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成核剂对聚乙烯蜡结晶形态及熔点的影响 总被引:1,自引:0,他引:1
分别以硬脂酸钙、硬脂酸锌、硬脂酸和1,3:2,4-二苄叉山梨醇(ID)为成核剂,采用熔融法对聚乙烯蜡(PEW)进行了重结晶实验,并通过偏光显微镜和显微熔点测定仪研究了成核剂的种类、用量、结晶温度对PEW的结晶形态和熔点的影响.结果表明,成核剂增大了PEW的成核密度,降低了球晶尺寸,提高了熔点;成核剂1,3:2,4-二苄叉山梨醇的效果最好,所形成的晶粒最小,晶片最厚,当其添加量为0.2%,结晶温度为80℃时,PEW的球晶尺寸最小,PEW的初熔点达到了110.6℃,比原料提高了27.7℃. 相似文献