共查询到20条相似文献,搜索用时 234 毫秒
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组合式同向旋转双螺杆特性曲线分析 总被引:3,自引:0,他引:3
应用有限元分析软件ANSYS对同向旋转双螺杆挤出机螺纹输送元件中的三维非牛顿流动进行了模拟,计算出在一定转速和挤出量等工艺条件下螺纹元件的建压能力,确立了一定导程螺纹元件的特性曲线。在此基础上,对组合式同向旋转双螺杆挤出机工作特性进行了分析,并对双螺杆计量段充满长度和排气段脱挥长度的确定作了初步探讨。 相似文献
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新型纺织用PTT纤维的特性及其染色工艺探讨 总被引:7,自引:0,他引:7
介绍了新型聚酯材料PTT作为纺织用纤的特性,以及染料、染色温度、染浴pH值及染色时间对PTT纤维染色效果的影响,初步确定了PTT纤维染色的工艺条件。 相似文献
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溴化丁基橡胶与普通丁基橡胶并用性能之研究 总被引:1,自引:0,他引:1
文中对溴化丁基橡胶与普通丁基橡胶并用的目的和意义进行了探讨,对不同比例并用胶料的硫化特性、物理性能、化学性能进行了测试和分析。同时,对并用胶的共硫化系统也作了初步的分析。 相似文献
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超高分子量聚乙烯的单螺杆塑化挤出技术初探 总被引:2,自引:0,他引:2
本文将讨论超高分子量聚乙烯(UHMW-PE)的单螺杆塑化挤出技术,文中叙述了UHMW-PE的性能,用途和消费,分析了它的加工难点和成型流动特性,由此对研究UHMW-PE的单螺杆塑化挤了技术的必要性,可行性及实际应用作了初步探讨。 相似文献
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通过100℃干燥试验法的试验对2cm厚的四种杨木木材干燥特性进行了研究和分析.获得了杨木的基本干燥特性数据。同时。此法补充了观测干燥速度和扭曲的内客。较为完整和便于应用。实验结果表明,杨木属易干木材。少裂,但翘曲严重。参照百度试验缺陷等级以及干燥缺陷对应的干燥条件拟定了初步的干燥基准,在生产中可供参考使用。 相似文献
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以甘蔗渣为原料,对蒸爆预处理进行了研究,考察了蒸爆压力和时间对甘蔗渣水解的影响。并研究了稀酸蒸焊对还原糖得率的影响。 相似文献
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The cellophane films were grafted with PAN for various time durations in magnetron enhanced air plasma. A magnetron-coupled plasma system was developed for the purpose. The rates of polymer deposition and etching were studied. The changes occurring in the angle of contact of water were studied. The attenuated total reflection—infrared spectroscopic studies confirmed the grafting of cellophane surface by polyacrylonitrile (PAN). The water vapor transmission rates through the grafted samples were also studied. 相似文献
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粉煤灰常用改性方法为酸溶法、碱溶法和表面改性法.前2种改性法的研究国内外均比较成熟,而对表面改性技术的研究相对比较少.本课题主要是对粉煤灰进行表面改性,采用的改性剂为表面活性剂吸附改性剂、高分子聚合改性剂和偶联反应改性剂,改性工艺为火法和湿法. 相似文献
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The photocatalytic degradation of benzoic acid using titanium dioxide (Degussa P‐25) as a photocatalyst has been studied. The effects of various anions, which are common in industrial wastewater, and of the initial pH were also studied. The effect of the presence of low concentration of cations was also studied. From the intermediates detected a photocatalytic degradation pathway for benzoic acid has been proposed. 相似文献
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The process of ammoniac precipitation of hydrated titanium dioxide from a solution of ammonium hexafluorotitanate obtained during ilmenite processing by ammonium fluoride with the further sublimation separation of titanium tetrafluoride has been studied. The dehydration of hydrated titanium dioxide has been studied. The phase structure of titanium dioxide, depending on the thermal treatment and precipitation conditions, has been investigated. The size of the sample particles has been studied with the method of electron microscopy. The conditions of rutile and anatase pigments production have been determined. 相似文献
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