大豆蛋白纤维针织物活性染料染色工艺研究

选用3种类型的活性染料(Cibacron Red LS-2G,Cibacron Yellow HW,Cibacron Red FN—R)对大豆蛋白纤维针织物染色.用正交实验的方法,探讨工艺条件(碱剂的用量、促染剂的用量、温度)对吸尽率、固色率的影响.以固色率为主要标准,优化工艺条件,确定染色工艺.实验结果表明,这3种活性染料对大豆蛋白纤维的固色率不是太高,可用于染淡色和中色.     

Effect of Inclined Water Jets on Tensile Strength of Bicomponent Hydroentangled Nonwoven Fabrics

The effects of inclined water jets on bicomponent hydroentangled fabrics were investigated. The PET/COPET and PA6/PET hydroentangled fabrics were made by using designed inclined water jet apparatus. Effects of basis weight, water jets inclination angle and water jet pressure were discussed. The comparison was made on the average tensile strength of fabrics made by perpendicular water jets （0^o inclination angle） and inclined water jets of 20^o with pressure levels of 3 bars and 7 bars. It was found that increases of water jet pressure, the fabrics tensile strength were increased. Furthermore, increases of water jets inclination angle, fabric tensile strength of 60 g/m^2 fabrics decreased while for 100 g/m^2 fabrics tensile strength increased.     

聚乙烯醇复合凝胶的强度与界面强度研究

为了提高物理交联聚乙烯醇(PVA)水凝胶的强度,制备了PVA无纺布复合水凝胶. 当基体凝胶PVA质量分数为10%、无纺布体积分数为15%时,复合水凝胶的拉伸强度为5.90MPa;随着基体凝胶PVA质量分数和无纺布体积分数的提高,复合凝胶的强度提高;当基体凝胶PVA质量分数为15%、无纺布体积分数为25%时,复合水凝胶的拉伸强度为10.90MPa. 利用A系数研究了不同PVA质量分数以及无纺布体积分数的复合水凝胶中基体与无纺布的界面作用,在无纺布体积分数相同时,界面强度随PVA质量分数的提高而增大;在基体凝胶PVA质量分数相同时,无纺布体积分数较低的复合凝胶的界面强度较大. 复合水凝胶的结晶度低于纯水凝胶的结晶度.     

柱高对锰氧化物/沸石吸附中性红的影响

研究了吸附柱高度对锰氧化物／沸石（MOCZ）吸附中性红（NR）的动态影响．结果表明,MOCZ吸附NR的平衡吸附量随着柱高的增加而增加．对不同柱高条件下的实验结果分别用Thomas,Yoon—Nelson和Adams—Bohart动态吸附模型进行线性和非线性拟合,结果说明穿透曲线初始阶段很好地符合Adams—Bohart动态吸附模型,Thom—as和Yoon—Nelson模型的预测点和实验点的变化趋势相同．误差分析说明线性和非线性方法均可用于预测流出曲线,且非线性方法的误差较小,优于线性分析．最后用BDST模型对实验数据进行了分析．     

Analysis of the Appearance Diameter of Yarns in Worsted Fabrics

Three-dimensional Rotational Microscopy was used to take the photos of the fabrics. Three categories of yarn appearance diameters in the worsted fabrics were discussed. The fabrics were grouped into two to explore the relationships between yam appearance diameters at the interlacing points, opening points, and the calculated yam diameters. The correlations between the appearance diameters and fabric parameters were given, and the results showed that the calculated yam diameter and warp cover factor had a very big influence on yam appearance diameter. The equations expressing the relationship between yam appearance diameters and fabric parameters are established using step-regression method. The validation of the equations for one type of fabrics shows a good accuracy with the average error below 9% except the weft fdaments exceeding 22%.     

前驱物沉淀法制备硅藻土/TiO2/TiOx的研究

采用溶胶-凝胶法将TiO2包覆在硅藻土(Diatomite)表面,并采用前驱物沉淀法制备包覆平整致密的硅藻土/TiO2/TiOx珠光颜料,探讨了pH值和煅烧温度对最终产物形貌的影响.结果表明:当溶液的pH值为5.0时,黑色钛氧化物颗粒细小,在珠光颜料表面分散比较均匀,包覆平整致密.650℃煅烧时,包覆粒子颗粒细小,包覆平整致密;700℃煅烧时,包覆平整致密,但包覆粒子尺寸较大.     

纺织品中游离甲醛含量的测试与分析

本文介绍了纺织品中游离甲醛含量的产生原因及其测试方法。     

双层防热阻燃织物的产品开发及其性能测试

从防护服的功能性、耐穿耐用、舒适性等因素出发选择防护服织物的原材料、织物组织结构等 ,开发研制了几种不同组织、不同密度的阻燃防热防护服织物 .通过性能测试 ,并与目前作为防护服用棉帆布相比较得知 ,所开发的织物各项性能较优良 .     

等效介电常数法研究带薄壳金属颗粒复合体系中的光学双稳

利用等效介电常数法,将带壳三组分颗粒复合体系等效成两组分颗粒复合体系,从而利用谱表示方法求解带壳层颗粒复合体系的空间局域场对外加电场的依赖.在Maxwell-Garnett近似下,研究了具有无规分布的带壳椭球颗粒非线性复合体系中的光学双稳特性.数值结果表明,光学双稳和双稳阈值强烈依赖颗粒的退极化因子.此外,我们还研究了复合体系的有效介电常数对外场的非线性依赖.     

氧化铝固载氟化钾催化的有机化学反应

介绍近20年来氧化铝固载氟化钾催化剂在有机化学反应中的应用,参考文献58篇.