高性能PAN原丝计算机仿真与信息管理系统开发

以聚丙烯腈（PAN）原丝实际生产过程为研究对象。以溶液聚合和湿法纺丝为基础。模拟PAN原丝纺制条件，设计开发了一套PAN原丝计算机仿真与信息管理系统。基于Windows视窗编程技术，利用VB和Access数据库。该系统将信息管理，工艺制订，性能预测，在线帮助等功能融为一体，界面友好，操作方便。利用该系统对现场生产过程进行仿真研究，仿真结果和实际测试结果比较表明，系统仿真精度误差小于5%，应用效果良好。     

不同制备方法所得PEN纤维的结构性能比较

利用高速纺丝法与纺丝拉伸一步法两种不同的方法制备聚萘二甲酸乙二酯 ( PEN)纤维 ,以DSC、X射线衍射、声速、力学测试等手段分析其结构、热学及力学性能并进行比较。结果表明 :以上两种纺丝法所制备 PEN纤维的晶型、晶粒尺寸不同 ;在所采用的高速纺丝速度范围内 ,分别以 6,7,8km/m in的速度纺制的试样结构性能基本相同 ;而纺丝拉伸一步法中不同的拉伸倍数对纤维的取向度影响较大 ,进而使杨氏模量、断裂强度和断裂伸长率变化较大     

废渣粉煤灰纤维棉增强PVC复合材料

本文选用废渣制成的粉煤灰纤维棉(FAF)和聚氯乙烯(PVC)树脂作为原料,成功制备了FAF/PVC复合材料,研究了FAF的表面处理及其加入量对复合材料力学性能、热性能和硬度的影响,并用SEM对复合材料的界面进行了表征。实验结果表明,相对于纯PVC树脂而言,复合材料含经KH550处理的FAF40phr时,拉伸强度提高约12%;含经软化剂处理的FAF10phr时,冲击强度提高约110%;含经偶联剂和软化剂联合处理的FAF10phr时,冲击强度提高约70%,拉伸强度提高约11%,维卡软化温度随FAF添加量的增加呈上升趋势。研究结果证明,KH550和软化剂联合使用会对复合材料起到有效的增强增韧效果,因此能提高复合材料中FAF的填充量。制成的环保型FAF/PVC复合材料不仅性能全面高于纯PVC,而且材料成本显著降低,为综合利用废渣FAF开拓了新方向。     

超高相对分子质量聚乙烯纤维的光敏交联改性

由凝胶纺丝得到的超高相对分子质量聚乙烯（ＵＨＭＷＰＥ）纤维，在光敏剂和交联剂存在下用紫外光进行辐照，使其产生交联结构。通过自制及标准仪器测试表明：在合适条件下进行交联改性后的纤维，既能够保持或提高原有纤维的高强高模的力学特性，又能显著改善它的耐热性能和抗蠕变性能。同时对交联改性机理进行了探讨     

在役加氢反应器材料损伤分析

基于随加氢反应器运行 5a的试验试块 ,研究了加氢反应器运行 5a后筒体材料 2 .2 5Cr 1Mo钢的损伤。进行了化学成分分析、拉伸和冲击试验、脱氢和脱脆试验以及断口形貌分析。结果表明 :反应器运行 5a后筒体母材及其焊缝金属的拉伸性能未发生明显变化 ,而冲击韧性明显降低 ,且焊缝金属损伤程度较母材严重。经分析 ,材料的损伤主要是加氢反应器长期使用过程中高温回火所致     

摩擦材料研究进展

对摩擦材料国内外发展现状进行了综述，简要叙述了摩擦材料的发展历史，以及各种摩擦材料的性能以及应用，阐述了它们的优缺点，说明了纤维在摩擦材料中的重要作用。同时指出陶瓷基复合摩擦材料是今后发展的趋势。     

Synergistic Influence of Poly(4-Vinylpyridine) and Potassium Iodide on Inhibition of Corrosion of Mild Steel in 1M HCl

The corrosion and inhibition behavior of mild steel in 1 M HCl in the presence of poly(4-vinylpyridine)(P4VP) and potassium iodide (KI) was investigated using weight loss measurements, potentiodynamic polarization studies and impedance measurements. The inhibition efficiency increased with increasing P4VP concentration. The inhibiting action of P4VP is considerably enhanced by the addition of potassium iodide. The adsorption of this compound either alone or in combination with iodide ions on the metal surface is found to obey Lamgmir's adsorption isotherm. The experimental results suggest that the presence of iodide ions in the solution increases the surface coverage and, therefore, indicate the joint adsorption of P4VP and iodide ions. On the other hand, it was found that the inhibiting effect of P4VP and (P4VP + KI) increased with increasing temperature of the corrosion medium. The presence of these species in the solution decreases the double layer capacitance and increases the charge transfer resistance, both derived from Nyquist plots obtained from a.c. impedance studies. The variation of charge transfer resistance with time suggests that the inhibitive action of (P4VP + KI) depends mainly on the protective inhibitor film formed on the steel surface.     

聚丙烯在功能纤维领域中的发展

阐述了聚丙烯在功能纤维中的应用、功能纤维的分类及国内外功能性聚丙烯纤维的发展状况，具体介绍了几种典型的聚丙烯功能纤维，并对聚丙烯在功能纤维中的发展趋势进行了分析。     

Ultrafiltration of Myoglobin using Surface-Sulfonated Polysulfone Hollow Fiber

The usage of ionic polysulfone (PSF) hollow fiber for the ultrafiltration of protein was investigated. The surface of polysulfone hollow fiber was sulfonated through the Blanc chloromethylation reaction to become anionic. Characterization of the modified hollow fiber was performed including ion exchange titration, pure water permeation, and molecular sieving measurement. The performance of ultrafiltration of protein was evaluated using myoglobin at various pH values. The results show that the water contact angles and hydraulic resistance are markedly decreased, indicating that the surface-modified PSF hollow fibers are more hydrophilic. In addition, the retention of myoglobin depends on the pH of the solution. At a pH higher than the isoelectric point of myoglobin, both hollow fiber and the protein have the same charge sign, and both the flux of the solution and the retention are the highest. The sulfonated PSF hollow fiber may be used as a biomaterial for protein separation and purification.     

卧式一步法丙纶高强丝生产工艺研究

在意大利ＦＡＲＥ公司卧式一步法丙纶高强丝设备上，研究了聚丙烯熔融指数与丙纶高强丝强度的关系。探讨了纺丝温度、冷却条件、单丝纤度、拉伸倍数等主要工艺条件对丙纶高强丝强度的影响。