大麻针织产品研制开发的意义

近年来,全球经济的发展大大加快了能源的消耗,石油资源迅速变的短缺,目前我国纺织工业每年加工各类纤维2100万吨,其中化学纤维1400万吨,占70%（每吨化纤耗用原油约2吨）。与此同时,人们也越来越清醒的意识到产品绿色环保的重要性。因此,人们开始注重开发可再生的资源。采用大麻作为原料具有以下意义：一是具有可持续性。     

化纤级钛白粉的研究及开发

由镇江钛白粉股份有限公司承担的省科委科技攻关项目"化纤级钛白粉的研究及开发"经过两年多的攻关,研究了新型的晶种制备技术和加压水解技术,重点攻克了粒度分布、杂质元素含量及在乙二醇中的分散性等技术难关,拿出了公斤级样品.     

Adhesion of PBO Fiber in Epoxy Composites

The high mechanical and thermal performance of poly p-phenylene- 2, 6-benzobisoxazole ( PBO ) fiber provides great potential applications as reinforcement fibers for composites. A composite of PBO fiber and epoxy resin has excellent electrical insulation properties, therefore, it is considered to be the best choice for the reinforcement in high magnetic field coils for pulsed magnetic fields up to 100 T.However, poor adhesion between PBO fiber and matrix is found because of the chemically inactive and/or relatively smooth surface of the reinforcement fiber preventing efficient chemical bonding in the interface, which is a challenging issue to improve mechanical properties. Here, we report the surface modification of PBO fibers by ultraviolet (UV)irradiation, O2 and NH3 plasma, as well as acidic treatments. The interfacial adhesion strength values of all the treatments show the similar level as determined for aramid fibers by pull-out tests, a significant impact on fibermatrix-adhesion was not achieved. The surface free energy and roughness are increased for both sized and extracted fibers after plasma treatments together with maleic anhydride grafting. The sized fiber shows marginal improvement in adhesion strength and no change in fiber tensile strength because of the barrier effect of the finish.For the extracted fiber, different surface treatments either show no apparent effect or cause reduction in adhesion strength. Atomic force microscopy (AFM) topography analysis of the fracture surfaces proved adhesive failure at the fiber surface. The fiber surface roughness is increased and more surface flaws are induced, which could result in coarse interface structures when the treated fiber surface has no adequate wetting and functional groups. The adhesion failure is further confirmed by similar adhesion strength and compression shear strength values when the fiber was embedded in various epoxy resins with different temperature behavior. The tensile strength of fiber is sensitive to surface treatment conditions as revealed by a bimodal Weibull statistical distribution analysis. Considerable strength reduction occurred, particularly for cases of acidic and plasma treatments, while UV irradiation shows the better ability to retain fiber strength.     

一种化学纤维异型喷丝孔污垢检测方法

针对基于常规特征指标分类时导致的化学纤维异型喷丝孔细小污垢误判问题，提出一种基于非线性孔轮廓曲线的模板匹配方法。从孔边缘轮廓曲线分布特征着手，构建包含控制点的参数化标准检测模板，再通过非刚性配准，将模板轮廓配准至待测孔边缘轮廓，构建异型孔归一化的污垢检测曲线，分割、定位污垢并构建污垢量化指标。采集经专家分类评估且包含多种污垢分布的扁平孔、三叶孔及十字孔等3种常规异型孔小型数据库，3个数据库的试验结果显示，基于非线性孔轮廓曲线模板匹配方法的污垢识别正确率达95%以上，显著高于传统方法。结果表明，该方法能够满足化学纤维常规异型喷丝孔的污垢检测要求，在喷丝板全自动机器视觉质量评估领域具有较好的应用前景。     

生物质棉纤维再生纤维素膜的制备与性能分析

以天然生物质棉纤维为原料,采用氯化锂/N,N-二甲基乙酰胺(Li Cl/DMAC)溶解体系对其进行活化处理,配置不同质量分数的纤维素有机溶液系列,在不同凝固浴条件下,采用KW-4A匀胶机高速旋涂成膜和AFA-Ⅱ自动涂膜器低速平推成膜2种工艺,制备再生纤维素薄膜系列。通过运用扫描电镜(SEM)、傅里叶变换红外光谱(FT-IR)、X射线衍射仪(XRD)和表面接触角测试仪等分析设备对再生纤维素膜的大分子结构、力学性能、结晶度、热稳定性和表面浸润性进行各项性能的系列化表征,研究纤维素质量分数、凝固浴种类、制膜工艺对膜性能的影响。实验结果表明:采用KW-4A匀胶机高速成膜工艺、凝固浴为水浴、纤维素质量分数为3.5%时,制备的再生纤维素膜的各项性能最佳;与天然生物质棉纤维相比,再生纤维素膜结晶度变化很大,热稳定性与棉纤维变化趋势一致但有一定程度下降,表面浸润性良好。     

叠丝生产中的自动控制系统

研究表明，有两种方法可以提高叠丝的质量，即增大摇臂的长度与恰当控制摇臂的转速，阐述了基于多级控制结构的叠丝自动控制系统的工作原理，步进电机的细分控制方法和ＰＬＣ控制程序设计技巧，该系统已投入生产，效果很好。     

纺织纤维供给与需求的演变过程及发展趋势

本文从我国纺织纤维生产与使用的实际出发，考察纺织纤维供给和消费的演变过程，揭示其运行的慕本规律特征。结合供给与需求的影响因素分析，采用计量经济模型等方法，对2010年以前纺织纤维供求数量进行预测。