整流机组节能技术改造总结

介绍了整流机组的技术改造内容。通过改造,提高了装备技术水平,简化了操作,提高了供电的平稳性和安全性;降低了电力损耗;节约了能源。     

低阶煤热解提质技术发展现状及趋势研究

本文围绕褐煤资源综合开发利用的问题进行了探讨;对褐煤煤质的特殊性进行了分析;对国内外褐煤提质加工技术进行了分类,简要说明了各类工艺的工作原理和技术特点;重点分析了国内外褐煤干燥热解技术的研究进展和工业应用情况,对工业化示范装置出现的问题进行了评价和总结;分析了制约褐煤发展的主要因素,并指出了未来产业发展的方向和重点.     

ZnO和金属单质催化尿素醇解法制备碳酸二甲酯的研究

使用不同方法制备ZnO催化剂并对其催化活性进行了比较,选出了高催化活性的催化剂,找到了合成碳酸二甲酯(DMC)的最佳工艺条件并且对催化剂进行了XRD和SEM表征.同时对3种金属单质进行了活性比较,得到镁粉有高的催化活性,并提出了镁粉催化反应的机理.同时,本实验还优化了通气方式.     

己二酸装置氧化反应器搅拌损坏原因分析及预防措施

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.     

石墨烯的制备及其应用进展

概述了石墨烯(GNs)的定义及发展史,介绍了GNs的特性及表征方法,详细介绍了GNs的9种制备方法.最后综述了GNs在聚合物中的应用情况,展望了GNs未来的应用前景.     

PUMP-200新型乳液泵组装机的研制与应用

介绍了PUMP-200新型乳液泵组装机的工作原理及特点,通过比较和分析,说明了该新机的运用,节省了大量的人力物力,降低了能耗,大大缩短了产品交货期,实现了产品质量的稳定,提高了生产效率,经济效益显著。     

氯化钾三效蒸发工艺

氯化钾采用三效蒸发,充分利用了热能,改变了沿用多年的落后工艺、降低了生产成本,为氯化钾生产开辟了新思路;自动控制系统的引用大大降低了工人的劳动负荷,且提高了操作的精度,使氯化钾生产首次实现自动化;三效蒸发系统的成功运行不仅降低了生产成本还为下游产品提供了优质充足的原料.     

焦炉生产操作改进

介绍了焦炉生产中的改进措施,通过改进装煤方式,减少了装煤冒烟;配制新型填料,增强了炉体维护;改进了1M管的冲洗方式;改进炉顶水箱槽的高度;降低上升管底座的高度,杜绝连接处冒烟;改进装煤孔底座。通过采取这些改进措施,大大降低了生产成本,改善了职工的操作环境,降低了职工的劳动强度,提高了职工的工作效率,有效地保障了生产的平稳顺行。     

2010年度工作会议

<正>2010年1月16日—17日,公司召开了2010年度工作会议。会议认真回顾总结了2009年的主要工作,分析了当前的形势和机遇,部署了2010年的工作任务。会上,公司董事长蒋明作了重要讲话,总经理毛绍融作了行政工作报告,党委副书记陈百河作了党委工作报告,副总     

关于丁二烯生产技术及使用新途径的研究探讨

文中详细介绍了几中丁二烯的生产工艺并进行了比较，总结出了它们的特点。对各地区丁二烯的生产能力以及消费状况进行了分析，并探究了丁二烯的新用途。     

子午胎帘子布用涤纶弹力纬纱的研制

绍了子午胎帘子布用涤纶弹力纬纱的制造技术。在普通纺丝设备上,合理选择聚酯原料,确定最佳生产工艺,生产出具有特殊性能的聚酯长丝,经棉纱包覆制成涤纶弹力纬纱。该产品浸胶后延伸可达８０％以上,适于子午胎用涤纶帘子布的制造及后加工。     

玻纤表面处理对于玻纤增强PET复合材料断裂韧性的影响

本文以三组分别经脱蜡处理、涂层处理及未经任何处理的玻纤为增强纤维，ＰＥＴ为基体纤维，采用混纤纱浸渍技术，制备连续玻纤增强混纤纱复合材料单向板。通过对所制备材料力学性能的对比，研究了玻纤表面处理对玻纤增强ＰＥＴ复合材料断裂韧性的影响。     

涤纶浸胶帘子布(帆布)的技术经济分析

本文首先介绍了国内外涤纶帘子线(布)发展情况、主要生产厂家及规模、各种骨架材料应用范围及其性能比较及涤纶帘子线技术指标等。第二介绍了涤纶树脂增粘、纺丝制帘子线及其生产工艺流程。第三介绍了涤纶帘子布厂的建厂规模、单位产品的投资数及成本、涤纶工业丝产品单位成本的测算和比较、涤纶浸胶帘子布单位成本的测算和比较。第四介绍了各种化纤工业丝比价、涤纶工业丝和民用丝比价、涤纶工业丝与帘子布的比价及浸胶帘子布与轮胎比值、最低售价的测算等。最后提出核定价格的几个原则及其建议价格。     

差别化涤纶变形纱新品种及结构性能

综述了有代表性的差别化涤纶变形纱新品种,重点介绍了多重变形纱结构与性能以及新型三异混纤涤纶低弹网络丝结构及其织物服用性能。     

Preparation of polyester nanofibers and nanofiber yarns from polyester/cellulose acetate butyrate immiscible polymer blends

Development of high throughput production processes for making thermoplastic nanofiber and nanofiber yarns are urgently needed. PET, PTT, and PBT nanofibers were prepared from PET/CAB, PTT/CAB, PBT/CAB immiscible polymer blends by in situ microfibrillar formation during the melt extruding process. The diameter distribution and crystallization properties of PET, PTT, and PBT nanofibers were analyzed. After removing the CAB matrix phase, the nanofibers could be collected in the forms of random or aligned nanofibers and nanofiber bundles or yarns. To understand the formation mechanism of the nanofibers, the morphology development of three different polyesters in the dispersed phase were studied with samples collected at different zones in a twin‐screw extruder. The morphological development mechanism of the dispersed phases involved the formation of sheets, holes and network structures, then the size reduction and formation of nanofibers. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Structural changes in draw-textured poly(ethylene terephthalate) filaments during heat-setting

A sample of high-elastic-textured poly(ethylene terephthalate) (PET) yarns were subjected to different conditions of heat-setting, i.e., different temperatures and overfeeds. The structural changes were characterized by different physical methods. The orientation factors of crystalline and amorphous regions were calculated. The yarn tensions acting during the SET process were measured and corrected to the structural data. The results obtained show that two processes take place during the SET process: relaxation of the molecule segments in amorphous regions and change of crystallite orientation in microfibrils. A simple model for explanation of the structural changes in simultaneously draw-textured PET yarns is proposed.     

Composite yarns fabricated from continuous needleless electrospun nanofibers

In this work, a spinning metal wire collector was employed to continuously collect polyacrylonitrile (PAN) nanofibers produced by a disc fiber generator and coil them around a polyethylene terephthalate (PET) yarn. The obtained composite yarns exhibited a core/shell structure (PET yarn/PAN nanofibers) with nanofibers orderly arranged on the surface of the PET yarn. The electric field analysis showed that the position of metal wire had insignificant effect on the formed electric field and high intensity electric field was formed at the disc circumferential area, which provided a constant electric field for the production of uniform nanofibers. The spinning solution, spinning speed of metal wire, and winding speed were found to play an important role in producing good quality nanofiber yarns, in terms of morphology, strength, and productivity. Pure nanofiber yarns were obtained after dissolving the core yarns in a proper solvent. This method has shown potential for the mass production of nanofiber yarns for industrial applications. POLYM. ENG. SCI., 54:1495–1502, 2014. © 2013 Society of Plastics Engineers     

纺丝拉伸一步法制涤纶全拉伸丝工艺研究

PET连续纺丝拉伸的二种不同工艺:高速纺丝—低倍率高速拉伸;低速纺丝—高倍率高速拉伸。所得到的纤维都是FDY。比较了这二种工艺产品的性能和结构。并与普通的POY—DT及UDY—DT路线产品进行了对比。发现用高速纺丝低倍拉伸方法制得的纤维性质更好一些。而低速纺的方法实施起来更方便。在二种连续纺丝拉伸工艺中由于消除了"不同停留时间"的影响,其产品的染色均匀性都比间断的方法来得好。     

Insights into process–structure–property relationships of poly(ethylene terephthalate) industrial yarns by synchrotron radiation WAXD and SAXS

Synchrotron radiation wide angle X‐ray diffraction (WAXD) and small angle X‐ray scattering (SAXS) were performed to study the structures of four typical types of poly(ethylene terephthalate) (PET) industrial yarns. Three‐dimensional structural models of the yarns and comprehensive insights into the process–structure–property relationships were gained. High spinning speed, low draw ratio, and high heat‐setting temperatures lead to HMLS yarns with high crystallinity, high amorphous orientation, densely packed lamellar stacks, and a small tilting angle of crystalline lamellae. High draw ratio tends to result in PET industrial yarns with large long period and a large tilting angle of lamellae. Heat‐setting process has a significant influence on the amorphous orientation and crystalline structures, such as crystallinity, crystallite size, as well as crystal grain number. Compared with other structure characteristics, amorphous orientation plays a more important role in determining the tenacity, initial modulus, part load elongation, ultimate elongation, as well as shrinkage of PET industrial yarns. The crystal grain number seems to have an effect on the initial modulus, while the long period influences the elongation of the yarns to some extent. In addition, the small tilting angle of crystalline lamellae may relate to the dimensional stability of PET yarns. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42512.     

高强抗紫外PET工业丝的生产试验与表征

将含纳米二氧化钛(TiO2)的母粒添加到常规高黏聚对苯二甲酸乙二醇酯(PET)切片中,采用熔融共混挤出的方法制备高强抗紫外PET工业丝.在研究TiO2对高黏PET流变性能和结晶性能影响的基础上,进行高强抗紫外PET工业丝工业化试验,试验中针对性地调整纺丝工艺,制得了不同TiO2含量的高强抗紫外PET工业丝,并对其结构和...