离子源对磁控溅射制备TiNC膜基结合力的影响

由于膜基附着力不好,膜层脱落问题是工业生产中磁控溅射镀制黑膜最常见的问题.本实验采用 阳极线性离子源和霍尔点源辅助磁控溅射复合技术制备了TiNC薄膜,探讨解决TiNC膜基附着力不好的问题.初步实验结果表明,离子束辅助沉积对于改善膜基附着力的作用并不明显,本文还比较了脉冲偏压清洗对膜基附着力的影响,探讨了其可能影响因素.     

石蜡微胶囊型相变储能材料制备及表征

采用原位聚合法以30#石蜡为芯材、密胺树脂（MF）为囊材,制备了具有相变储热功能的微胶囊,并将所制得微胶囊添加到石膏板中。采用SEM、FTIR、DSC和TG等手段对微胶囊外观形貌、化学结构和热性能进行了表征,并测试了石膏板储能性能。结果表明：制得微胶囊中石蜡平均含量约为50.4%,相变温度和相变潜热分别为30℃、108.7 J/g;微胶囊表面光滑有突起,粒径在10～20μm;具有较好的外观结构和良好的热稳定性,能增强石膏板的保温性能。     

MF保温免拆模板-混凝土复合墙体的隔热性能研究

以矿渣棉为原料制成的MF(矿棉)保温免拆模板,兼顾免拆模板与保温板的特点,节省施工、人力成本,具有较好的保温隔热性能。针对MF保温免拆模板-混凝土复合墙体及其他几种常用的保温墙体,分别计算墙体的传热系数、热惰性指标等热工性能指标,并结合GB 50176—2016《民用建筑热工设计规范》对几种墙体进行热工性能对比;利用Fluent16.0,对7种墙体进行常温下的二维瞬态传热分析,观察内墙表面温度变化,通过对墙体衰减倍数、延迟时间的对比来对MF保温免拆模板墙体的保温隔热性能作进一步的评价。模拟结果表明:MF保温免拆模板复合墙体的衰减倍数、延迟时间均大于其余6种墙体,具有优异的隔热性能。     

浸渍纸生产技术与生产中常见质量问题探讨

简要介绍浸渍纸生产技术涉及的工艺、设备和原料,并针对生产中常见的质量问题进行了分析探讨.     

New equipment for measurement of the force of adhesion of mucoadhesive films

A better recognition of the properties of materials is of great interest in pharmaceutical technology, and especially in the development of modern solid dosage forms. As an example, a knowledge of the force of adhesion of a mucoadhesive preparation is of considerable importance. The aim of the present study was to develop the calibrated equipment suitable for determination of the force of adhesion and for following the process of film deformation during testing. A new instrument is introduced, and the results are presented.     

发电厂磨煤机误合闸原因分析及处理

通过对电厂一起电动给水泵人为跳闸事故引起的磨煤机误合闸事故的分析,找到了故障原因。即在电动给水泵和磨煤机的电气回路没有任何联系的情况下两台装置存在“软逻辑”联系。同时对直流220V合闸线圈是如何串入交流220V电压的原因进行分析．最后找出了事故发生的原因。     

蓝牙技术在钻孔测斜仪中的应用

针对钻孔测斜仪中电缆传输的复杂性以及引入的误差,采用蓝牙技术进行数据传输,把井下采集到的数据经蓝牙传输到地面系统,能实时测量和记录钻孔过程中的工作参数.以斯图曼公司的BlueRS+MF3蓝牙芯片为基础,从硬件和软件两方面对蓝牙通信进行了研究.经调试,蓝牙通信工作稳定,传输数据可靠,抗干扰性好,实现了预期的功能要求,具有较高的实用价值.     

UF膜和MF膜技术在饮用水处理中应用现状的研究

膜技术是２１世纪最有前途的水处理技术之一,ＵＦ膜和ＭＦ膜技术是其中很重要的一个组成部分。ＵＦ膜和ＭＦ膜可截留水中绝大部分悬浮物、胶体和细菌,是可靠的除浊和消毒工艺,但对水中有机物去除率不高,需要适当的预处理。膜污染是ＵＦ膜和ＭＦ膜技术用于净水处理的最大障碍,应尽可能减轻膜的浓差极化,延缓膜污染,从而延长膜的使用周期和使用寿命,取得更佳的经济效益。     

丝／毛染色同色性的研究

丝／毛染色是丝／毛混纺加工中的重要环节。丝／毛染色受温度、pH值、时间、染液浓度等因素的影响。通过实验,用Sandolan系列弱酸性染料对丝／毛的染色实验,得出其最佳工艺条件。染色后丝／毛同色效果较好,各项牢度优良。     

A Review on Current Strategies for Extraction and Purification of Hyaluronic Acid

Since it is known that hyaluronic acid contributes to soft tissue growth, elasticity, and scar reduction, different strategies of producing HA have been explored in order to satisfy the current demand of HA in pharmaceutical products and formulations. The current interest deals with production via bacterial and yeast fermentation and extraction from animal sources; however, the main challenge is the right extraction technique and strategy since the original sources (e.g., fermentation broth) represent a complex system containing a number of components and solutes, which complicates the achievement of high extraction rates and purity. This review sheds light on the main pathways for the production of HA, advantages, and disadvantages, along with the current efforts in extracting and purifying this high-added-value molecule from different sources. Particular emphasis has been placed on specific case studies attempting production and successful recovery. For such works, full details are given together with their relevant outcomes.