化纤仿真面料的新发展

文章从新型纤维、纱线和织物组织、新工艺、新技术以及功能性开发等几方面介绍了化纤仿真面料风格和发展趋势,论述了化纤仿真面料的新发展和应用。最后指出,提高面料的科技含量和时尚元素,赋予服装产品更高的附加值和更强的竞争力,是提高国际市场占有率的有效手段。     

不同混合比玻璃纤维/丙纶网络纱的拉伸行为

对不同混合比及不同供气压力的玻璃纤维／丙纶（GF／PP）网络混纤纱进行拉伸测量，包括抗拉强度、断裂伸长率、模量．通过实测值与经典理论估计值对比分析，结合其拉伸曲线，得出混纤纱的实测强度大致符合经典理论估计．并认为该种混纤纱宜采用较低含量的丙纶以保证玻璃纤维的应用特征，最终断裂点特征不必过高关注．     

粘胶纤维开棉机加压弹簧的最优设计

在设计中以粘胶纤维开棉机弹簧体积最小作为最优化设计目标，以弹簧钢丝直径 ｄ、弹簧中径 Ｄ２ 及弹簧工作圈数 ｎ 为设计变量，采用约束最优化方法直接解法中约束随机方向探索法对弹簧进行最优化设计，最优设计的结果：ｄ ＝ １０ ｍ ｍ ， Ｄ２ ＝ ５２ ｍ ｍ ，ｎ＝ １０ 圈。     

Influences of NMMO Content in Coagulation Bath on Mechanical Proper-ties of Lyocell Fibers

The influences of the coagulation bath concentration in N-Methyl-Morpholine-N-oxide(NMMO)processon the maximum spinning speed and the mechanicalproperties(the modulus,the tenacity and the extensionat break)of Lyocell flbers are investigated.The resultsshow that the maximum spinning speeds decrease withthe increasing coagulation bath concentration.When theconcentration of coagulation bath is 10％(wt％),the te-nacity and modulus of the obtained Lyocell fibers reachmaximum and the extension at break of the fibers reach-es minimum.     

Effect of Electrolyte Impurities within Starch on the Adhesion of Quaternary Ammofiium Starch to Fibers

Influences of some electrolyte impurities within starch and starch cationization on the adhesion of quaternary ammonium cornstarch to cotton and polyester fibers were investigated. The electrolytes considered included NaCI, Na2SO4, NaH2PO4 and Na2HPO4. The adhesion to fibers was evaluated in terms of maximum strength and work-to-break of the roving sized with the starch pastes containing electrolytes. It was found that the cationization showed a positive effect on the adhesion to both fibers whereas the electrolytes gave an adverse effect and reduced the adhesion. The adverse effect depends on the type and amount of electrolytes. The influence of electrolytes on the adhesion can be ranked in a series of NaH2PO4〉 Na2 HPO4〉 Na2SO4 〉 NaCl. The adhesion enhances as the modification extent increases and the electrolyte content decreases. Furthermore, the adverse effect can be compensated by the positive effect of the starch modification even at a low modification extent. If the electrolytes are fully eliminated, the cationic starch can increase the adhesion strength by more than 10% for both fibers.     

Investigating the Microstructure of Slenderized Wool Fibers at Different Stretching Ratios by Raman Spectroscopy

The molecular conformation and the microstructure of the slenderized wool fibers have been studied by the Raman spectroscopy. The typical bands analyzed in this paper include the amideⅠand amide Ⅲ regions, the C-C skeletal vibration region, and the S-S and C-S bond vibration regions. The experimental results show that ⅰ) the Raman spectroscopy can reveal the secondary structural transformation from α-helical to β-pleated sheet begin at the early stage of stretching; ⅱ) the stretching mechanism of wool fibers can be divided into two different mechanisms, I.e. The secondary structural transformation and the slippage of the polypeptide chain; and ⅲ) the stretching leads to the increasing of the amount of the disordered conformation and the decreasing of the amount of S-S bonds.     

不同配合比下玄武岩纤维水泥砂浆的流动度及力学性能

为研究玄武岩纤维增强水泥砂浆（Basalt Fiber Reinforced Cement Mortar，BFRCM）在不同配合比下的流动度和力学性能，通过改变水灰比、长短纤维混掺比例及添加减水剂来改变配合比，设计了2种纤维长径比、7种玄武岩纤维体积分数、3种水灰比、3种减水剂质量分数共制备了14组BFRCM试样。研究了不同配合比下BFRCM的流动度、抗压强度及抗折强度，通过峰值荷载后BFRCM的荷载-位移曲线的归一化处理量化分析了试样断裂后BFRCM的断裂韧性。结果表明，BFRCM的流动度随着玄武岩纤维体积分数的增加、水灰比的降低、减水剂的减少以及短纤维占比的增加而降低。水灰比的增加对BFRCM的抗压强度影响较小，且会降低其抗折强度。减水剂的应用对BFRCM的抗压、抗折强度存在一定的负面影响。长短玄武岩纤维的混掺能够通过其协同效应有效提升BFRCM的抗压和抗折强度，然而过多的短纤维占比会减弱玄武岩纤维对BFRCM的增强效果。增加玄武岩纤维体积分数、 提高水灰比均能在一定范围内提升BFRCM峰值荷载后的断裂韧性。然而，长短纤维混掺中短纤维占比的增加和减水剂的应用则对BFRCM峰值荷载后的断裂韧性产生负面影响。     

应用光纤进行计算机网络通信

介绍了光纤传送信息的原理，并根据实例说明光纤系统在计算机网络中的应用以及一种光纤连接器的制作。     

异氰酸酯改性丙烯酸电泳涂料

利用异氰酸酯对丙烯酸树酯电泳涂料进行改性，合成了一种耐性较好的新型水溶性电泳涂料．经表征及测试漆膜的性能证实，改性后的涂料，在０．１ｍｏｌ／ＬＮａＯＨ溶液中，漆膜的耐碱稳定时间由２ｈ增至３６ｈ，耐２５％（质量分数）盐水性能由３ｈ增加至７２ｈ以上；树脂失重３０％的耐热温度由交联前的１２０℃增加至３４０℃，泳透力大于１５ｃｍ．     

Triangle Area Representation for Profiled Fiber Shape

A multi-shape representation approach for measuring geometrical properties of profiled fibers was presented.From closed edge chains of a fiber cross section,three evenly spaced vertices were selected to form a triangle by changing the vertices' spacing,or the step length,the Triangle Area Representation(TAR)was calculated with a special determinant.The bend direction of the two consecutive lines drawn by three vertices determined the sign of the TAR.TARN and TARP were negative and positive extensions of TAR...