纤维素酶和聚羧酸在棉织物防皱整理中的应用

为解决棉织物树脂防皱整理后手感和吸湿性差等诸多缺点，采用纤维素酶和聚羧酸对棉织物防皱整理。研究了纤维素酶预处理时酶浓度、pH值和处理时间对聚羧酸防皱效果的影响，确定了纤维素酶预处理的最佳工艺为：纤维素酶浓度3％（owf），pH值4．5，温度50℃，时间30min。结果表明，先经纤维素酶预处理，再进行聚羧酸防皱整理，可使棉织物的折皱回复角较对比样（未经酶处理只经防皱整理的试样）提高19°，白度提高0．7％，而断裂强力保留率仅下降1％，且整理织物的手感柔软，布面光洁，服用性能良好。     

防水透湿织物的研究进展

介绍了防水透湿织物的分类、原理及测试方法,并分析了微孔质扩散和亲水性基团“吸附-扩散-解吸”传递水分的透湿机理.指出了目前常见的防水透湿织物防水性能和透湿性能测试中的不足,以及改进的方向.     

聚氨酯对棉织物免烫整理的影响

在不同预聚反应条件（预聚物摩尔比、反应温度、反应时间）下合成的水性聚氨酯产品，研究其作为免烫整理添加剂，对棉织物免烫整理效果的影响。结果表明：预聚反应中，聚乙二醇分子量为400—800，能够提高整理织物的回复角；PE与TDI的摩尔比对提高织物回复角也有一定影响。     

聚氨酯改性有机硅在棉织物上的应用研究

以端羟基聚醚改性有机硅、甲苯2,4 二异氰酸酯(TDI)为原料,乙二醇(EG)为扩链剂,亚硫酸氢钠为封端剂,合成了聚氨酯改性有机硅。采用红外色谱、扫描电镜等对聚合物进行了表征。采用自制的聚氨酯改性有机硅处理棉织物,能够获得较好的手感,在降低强力损失的同时提高湿摩擦牢度。浸轧法处理纯棉织物的最佳工艺条件为：整理剂80 g/L,焙烘温度160 ℃,焙烘时间90 s。     

紫外二阶导数光谱法测DTY油剂中烷基酚聚氧乙烯醚含量

介绍了紫外二阶导数光谱法直接测定ＤＴＹ油剂中烷基酚聚氧乙烯醚（ＯＰ）含量的方法，并消除了其它共存物质的干扰。实验表明：该方法线性范围２５～７００ｍｇ／Ｌ，标准偏差０．０９４％，标准加入回收率９９．９％～１０１．７％。     

高装饰性改性醇酸家具涂料

介绍了用苯甲酸改性的含羟基醇酸树脂和甲苯二异氰酸酯(TDI)预聚物的合成工艺,以及由二者制成醇酸型聚氨酯涂料的方法;讨论了合成的醇酸树脂、TDI预聚物、固化剂种类和用量、溶剂、助剂和颜填料对涂料及涂膜性能的影响。制备得到的改性醇酸家具涂料成本不仅比聚酯涂料低,而且其涂膜的光泽高、丰满度好、硬度高、干性好,施工性能也有所改善。     

高性能水性双组分聚氨酯工业面漆的研制

使用自制的羟基丙烯酸乳液制得了水性双组分聚氨酯工业面漆。重点考察了水性双组分聚氨酯工业面漆研制过程中颜基比及成膜温度对涂膜耐介质性能的影响、催化剂用量和温度对涂料凝胶时间的影响,并对n(—NCO)/n(—OH)和流挂性能进行了探讨,最终得到了各项性能指标均优异的水性双组分聚氨酯工业面漆。     

水性汽车面漆的发展状况及趋势

汽车面漆是提高车辆整体外观装饰效果的关键产品,面漆的水性化是减少VOC排放的关键因素。叙述了水性汽车面漆涂料的发展状况,介绍了当前水性金属闪光漆和罩光清漆的研究进展。     

建筑保温材料防火等级的界定及性能分析

简述了建筑保温发展历程、常用的建筑保温材料及建筑保温构造做法,阐明了建筑保温防火等级的界定,并对建筑保温材料及其构造做法的防火性能进行分析.     

Surface integrity when machining age hardened Inconel 718 with coated carbide cutting tools

Considerable attention has been given to the use of ceramic cutting tools for improving productivity in the machining of heat resistant super alloys (HRSA). However, because of their negative influence on the surface integrity, ceramic tools are generally avoided particularly for finishing applications. As a result the main high end manufacturers are more or less dependent on carbide cutting tools for finishing operations. Still the improper use of carbide cutting tools can also result in poor surface integrity. The objective of this investigation is to develop a set of guidelines, which will assist the selection of the appropriate cutting tools and conditions for generating favorable compressive residual stresses. This paper specifically deals with residual stresses and surface finish components of surface integrity when machining (facing) age hardened Inconel 718 using two grades of coated carbide cutting tools specifically developed for machining HRSAs. The cutting conditions were obtained from investigations based on optimum tool performance. The effect of insert shape, cutting edge preparation, type and nose radius on both residual stresses and surface finish was studied at this optimum cutting condition. This investigation, suggested that coated carbide cutting tool inserts of round shape, chamfered cutting edge preparation, negative type and small nose radius (0.8 mm) and coolant will generate primarily compressive residual stresses.