关于脆弱生丝织造性能的研究

将正常生丝、脆弱生丝、经柔软剂处理的脆弱生丝一起作为经丝上机织造,比较它们织造过程中断头、张力情况,并对织物的拉伸性能、染色性能作对比分析,结果表明:脆弱生丝经柔软处理后断头次数明显减少,织物强力有所增加,但与正常生丝一起染色存在色差.     

中国生丝出口定价的数学模型分析

本文通过建立中国生丝出口数学模型 ,估计了中国生丝出口价格弹性 ,并得出了生丝出口价格弹性小于 1的结论。这表明中国生丝出口价格提高会增加贸易收入 ,而降价则会导致贸易收入的损失。本文的这一结论对目前我国生丝出口定价策略的制定有重要的参考价值     

大直径聚乳酸单丝初生丝的形态分析

研究目的:分析在大直径单丝喷丝口纺丝时初生丝的微观形态。研究方法:通过扫描电镜进行微观形态分析及热行为分析。研究结果:大直径聚乳酸单丝初生丝的形态具有明显的皮芯形结构,同时由于没有经过拉伸,对应的晶区部分没有充分结晶,在初生丝表面可以看出片状结构所占比例较多。结论与讨论:聚乳酸初生丝的形态结构符合液体冷却大直径单丝的结构特点。     

再生丝心蛋白和羧甲基纤维素复合膜的特性及其在有机相 …

用再生丝心蛋白和羧甲基纤维素构成的复合膜作为固定葡萄糖氧化酶的基质，并用红外光谱测试了该复合膜的结构，用扫描电子显微镜观察了其形态。     

用工序能力记健法加强生丝纤度均匀度的管理

采用工程能力指数的方法控制生丝纤度均匀度是十分有效的。本文设计了工程能力记分法更简易明了，便于实施。     

一种基于分块DCT变换的三维网格模型半脆弱水印算法

半脆弱水印可区分恶意攻击和正常数据处理,具有更广泛的适用性,但目前已提出的算法大多只能容忍少数类型的网格正常处理。文中提出了一种基于内容认证的半脆弱水印算法,网格分割后水印隐藏在各分块的DCT变换域系数中,网格被非法篡改时,通过匹配提取出的水印序列与原始水印序列可定位出篡改位置。实验结果表明,算法嵌入的半脆弱水印可容忍多种类型的网格正常数据处理,如网格RST相似变换和低强度的顶点坐标值量化处理,同时对恶意攻击表现敏感,可较准确的定位出篡改位置,并能以直观的可视化形式做出标记。     

高含量再生丝素蛋白水溶液的热性能研究

用差示扫描量热仪(DSC),对不同含量的再生丝素蛋白水溶液(质量分数为12%~42%),以及同一含量不同剪切速率(1 000 s-1和2 000 s-1)下溶液热性能的变化进行了对比研究。结果表明,随着含量的增大,再生丝素蛋白水溶液发生相转变的温度逐渐降低;同样,经剪切后的溶液发生相转变的温度均向低温漂移,且随着剪切作用的加强,向低温的漂移越明显。试验表明,丝素水溶液含量的增加和剪切作用可加速溶液从无规线团或α-螺旋向β-折叠构象的转变速度,且随着剪切速率的提高,构象转变的速度也加快。     

再生丝素固体的微细结构

研究了蚕丝丝素水溶液经不同方式干燥后，所得到的再生丝素固体的微细结构，以及存放过程中丝素的结构变化，指出经30℃热风干燥或经高于－20℃冷冻干燥后，所得到的丝素固体的结构是无定形和Silk I共存，在室内温度湿度环境中存放后，部分无定形结构转化为Silk I；蚕丝丝素水溶液经－80－－20℃冷冻干燥后，所得到的丝素膜的结构主要是无定形，含少量Silk II，存放过程中部分无定形结构转化为SilkI；室温放所自然形成的丝素凝胶中，丝素的结构是无定形和Silk Ⅱ共存；丝素水溶液表面膜中甘氨酸和丙氨酸的含量较高，表面膜的结构主要是Silk I和Tilk Ⅱ结晶度高。     

一种基于分块DCT变换的三维网格模型

 半脆弱水印可区分恶意攻击和正常数据处理,具有更广泛的适用性,但目前已提出的算法大多只能容忍少数类型的网格正常处理。文中提出了一种基于内容认证的半脆弱水印算法,网格分割后水印隐藏在各分块的DCT变换域系数中,网格被非法篡改时,通过匹配提取出的水印序列与原始水印序列可定位出篡改位置。实验结果表明,算法嵌入的半脆弱水印可容忍多种类型的网格正常数据处理,如网格RST相似变换和低强度的顶点坐标值量化处理,同时对恶意攻击表现敏感,可较准确的定位出篡改位置,并能以直观的可视化形式做出标记。     

甲醇利用型细菌发酵生产吡咯喹啉醌的培养条件

以甲醇为唯一碳源，对生丝微菌TH205进行培养，研究了甲醇流加速度、Fe^2 浓度对细胞生长及吡咯喹啉醌(PQQ)表达量的影响。结果表明：培养基中添加浓度为7μg／mL的Fe^2 ，并控制甲醇的流加速度使培养基中甲醇浓度为1mL／L时，细胞的生长情况较好，且此时PQQ的发酵产量为26．6μg／mL。     

Simulation and Analysis of Raw Silk Defects

To test the reliability and stability of the inspecting program of the electronic inspection system for raw silk,a simulating program is developed to simulate various defect cases with the software tool of Laboratory Virtual Instrument Engineering Workbench(LabVIEW).Many techniques,such as random numbers,shift registers,for loop,case structures and waveforms,are used to facilitate the simulation.The simulated defects are inspected by the inspecting program successfully,which proves the effectiveness of the ...     

抗静电剂在绢纺生产中的应用

本文对用酶制剂精练的精干绵在梳纺加工过程中的抗静电问题进行研究。根据蚕丝是高分子聚合物以及吸湿性能强的特点,作者认为其导电性能应以离子导电为主,其导电途径应以体积导电为主;从而找出以增加纤维平滑性和导电性的润滑剂和电解质为抗静电剂的主要成份,使能减少起电和增加其导电作用。通过生产实践证明本文的工作是有效的。     

涤纶牵伸复合丝织物染色不匀的原料分析

从POY原丝各细分纤维纤度与孔数的对比选择、牵伸温度和网络压空等方面入手,剖析了涤纶牵伸复合丝织物染色疵点的成因及其布面表现形式。     

Influence of Dilative Technology on Thickness and Fullness of Tussah Silk＇s Fiber and Fabric

In this paper, study objects are raw and dilative tussah silk. By means of measuring and analyzing the fiber＇s diameter, linear density, diameter coefficient, thickness and fullness, this paper focuses on the influence of dilative technology on tussah silk＇s fiber and fabric. The results include the following three aspects： the diameter coefficient of dilative tussah silk fiber is increased by 10.35%,dilative tussah heather silk is thicker and fabric fullness is improved by 9%.     

Evaluation on Gambiered Guangdong Silk''s Ecological Properties

To evaluate gambiered Guangdong silk's ecology properties,the raw materials ecology,production ecology and use ecology are analyzed;and the safety to human is tested according to GB/T18885-2002.Gambiered Guangdong silk is a kind of natural product.All its raw materials are reproducible and degradable natural resources,and it can decompose completely when being discarded.It is comfortable to wear,and easy to clean and dry.It is mainly manufactured by dip-dyeing in dye yam solution,and insolating under the burning sun.The production energy is solar,a kind of clean and reproducible energy.The production process is clean and environmental friendly.There is neither the utilization of synthetic dyestuff and chemical auxiliary,nor the discharge of environment pollutant,and even the dreg of dye yam is used as fuel.The safety test results show that pH value of water extract,heavy metal content(except for Pb content),color fastness and odor meet the requirements of GB/T18885-2002 and Okeo-tex standard 100.     

稀土固着丝胶增重真丝纤维的结构变化

用稀土金属离子通过形成配位结合来固着丝胶，制备了不同增重率的丝纤维，研究了增重丝纤维结构变化。与未增重丝纤维相比，增重丝纤维的纵向形态和截面形态发生了变化，增重丝纤维中氮元素和碳元素的含量呈下降趋势，增重丝纤维中极性氨基酸含量增加，增重丝纤维的结晶度随着增重率的增加而下降，增重丝纤维热分解峰顶温度变化不明显。     

PRIMARY APPLICATION OF THE WATER SOLUBLE POLYURETHANE (WPU) TO PROTEIN FABRICS

The primary application of the water soluble polyurethane (WPU) in protein fabrics was investigated. Both WCRA (wet crease recovery angle ) and DCRA ( dry crease recovery angle ) of silk fabrics finished with WPU were increased, and the other properties were only slightly influenced. As a formaldehyde - free silk finishing agent, WPU was proved to have a great future. The felting shrinkage ratio of wool fabrics treated by only WPU was reduced to 12.5% from 36.7%. On the basis of Oxidation/ Resin process, the felting shrinkage ratio of treated wool was 8.7%, and almost reached "Machine washable" level.     

The Effect of TDEA on Dyeability of Both Cotton and Silk

Effects of the non - alcohol finishing agent TDEA on dye-ing properties of cotton and silk fabrics were examined. TDEA improving substantivity and having a fixation ac-tion on cotton fabrics dyeing with reactive dyes and sharp increasing dry and wet crease recovery angles of cotton have been demonstrated. The slightly lower color yields and duller in shade on the TDEA finished silk fabrics dyeing with some acid dyes have been indicated.