筒子图Pn×Cm的粘连度

讨论了筒子图Pn×Cm的性质和粘连度.     

高强涤纶三股绳制绳工艺探讨——高强涤纶三股绳的捻度与强伸关系

本文以高强涤纶为原料,进行三股高强涤纶绳索的试制工作。通过对加捻预张力、捻度、捻度方向及小支股加捻与否等一系列工艺参数对绳索强伸性能的影响试验,从中得出6mm三股高强涤纶绳较理想的工艺参数,并作了分析。     

加捻对芳香族聚酰胺纤维拉伸性能的影响

本文对加捻芳香族聚酰胺纤维的拉伸性能进行了①定长加捻后拉伸;②定张力加捻后拉伸和③定长加捻后再退捻随后拉伸等三方面的测试.结果表明,芳香族聚酰胺纤维的强度及断裂伸长随捻度的增加而下降.对纤维断裂端进行了扫描电镜观察.加捻芳香族聚酰胺纤维断裂形态照片显示了纤维沿轴向分裂为微纤的现象,证明了微纤间横向联系的薄弱.加捻作用更削弱了这种联系,从而使纤维强度下降.本文对芳纶纤维在加工过程中应严格控制加捻提供了依据.     

由溶致液晶制备高强高模纤维素纤维

工业生产的三醋酯纤维素(分子量约 10～5)溶解在三氟乙酸(TFA)和二氯甲烷(CH_2CI_2)混合溶剂中,在一定浓度下可形成液晶。选择了不同条件进行液晶纺丝,再把初生纤维经过235℃热处理,通过不同皂化处理,得到强度为11.02cN/dtex,模量为 348.98cN/dtex的高强高模纤维素纤维。X-光衍射分析表明该纤维素纤维属于纤维素I族。     

胡麻纤维结构和性能的研究

作者用电子显微镜法、X 射线衍射法、密度法和光学双折射法等,研究了山西胡麻和东北亚麻的组织形态结构、大分子聚集态结构和结晶结构,并进行了纤维物理机械性能的测试。分析结果证明两种纤维的组织形态结构略有差异。单纤维根、中、梢不同部位的平均支数,胡麻为3.28dtex(3046支),亚麻为3.29dtex(3042支)。胡麻纤维的断裂强度、断裂伸长率和模量分别为61.08 cN/tex(6.92g/d)、3.62%和1835.63 cN/tex(207.98 g/d)。该值与亚麻纤维的对比测试值差异不大。     

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

This work was carried out to characterize the changes induced on wool fiber by clay treatment. Technical measurements were studied including Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal degradation analysis (TGA), scanning electron microscopy (SEM), moisture regain measurement (MRM), and tensile strength test (TST). The intensity of major peaks in FTIR spectra of the clay treated sample is in favor of chemical changes of the polypeptide functional groups. DSC results indicated that clay treatment of wool enhances heat and thermal barrier properties of fiber. TGA results stated lower thermal degradation of clay treated wool compared with untreated one. One of the main advantages of clay application on wool could be its positive effect on the moisture absorption of wool.     

一曲追求爱和美的女性生命赞歌——沈复《浮生六记》中的陈芸形象解读

芸的形象之美是《浮生六记》的核心魅力所在。文章从陈芸追求的情爱之美、生活艺术化之美和坚韧的生命之美三个方面来分析陈芸的形象之美,从而指出,陈芸的生命虽然短暂,但却是一曲追求爱和美的生命赞歌。     

Absorption and Permeability of Air-jet Textured Glass Fiber Yarn and Its Fabric for Resin

The Absorption and permeability of air-jet textured glass fiber yarn and its fabric and bonded tenacity of the fabric have been studied in relation to the main parameters, air supplied pressure and overfeed ratio. It has been observed that increasing the level of main parameters improves the coated ratio of the textured yarn and its fabric as well as the bonded tenacity of the fabric made of textured yarn. Comparison of absorption or permeability between textured and supplied yarns, and comparison of absorption or permeability and bonded tenacity between the two kinds of fabrics have been elucidated.     

原棉性能与细纱比强度之间关系的研究

通过对大批原棉进行试纺实验，运用多元相关理论，结合主成分分析方法，探索原棉的物理性能和成纱比强度间的关系，求得的方程具有很好的拟合效果．     

高压高温设备接管焊接工艺的断裂韧性评定实验研究

针对高温高压设备接管焊缝的易泄露问题，实验研究了几种焊接母材和焊条的断裂韧性，提出了母材和焊条的最佳匹配方案。为提高焊缝质量，防止泄漏提供技术参数。