变径热管纺丝机理的研究

变径热管纺丝是一种新开发的纺丝工艺，通过建立纺丝动力学的模型，对不同的工艺条件进行模拟，计算出纤维沿纺程上的温度，速度及应用分布，找出纺丝工艺参数的调节规律。     

利用废弃陶瓷磨具再生砂制备烧结透水砖

利用废弃陶瓷磨具破碎制成具有复合结构的坚固的不同粒度再生骨料,进而以不同粒度的骨料和砂结比分别配制透水砖的上层(装饰过滤层)和下层(透水层)的成型料,以二次投料法模压成型具有复合结构的透水砖坯体,脱模后在相应的温度制度下干燥、烧结,制成透水砖样品.经便携式显微镜观测发现其上层、下层和中间结合层组织均具有丰富的气孔结构.经检测,该透水砖透水性能优异,透水系数为2.8 cm/s,远超A级指标规定的标准值2.0×10-2 cm/s;耐磨性方面测得磨坑长度30 mm,防滑性77 BPN;劈裂抗拉强度为平均值9.2 MPa,单块最小值9.0 MPa;抗冻性良好,在经过35次冻融循环后单块质量损失率3％,冻后顶面缺损深度2 mm,强度损失率13％.该烧结透水砖满足了国内各地区,特别是北方冬季冰冻地区在海绵城市建设中对透水铺装材料的要求.     

三角异形丝的不对称传热模型的建立及分析

在分析了丝条传热过程的基础上，以三角形作为微分单元，详细分析了各微分单元之间的传热情况，建立了三角异形丝的传热模型，通过热平衡方程定量分析了各单元间的传热情况，进而可推导出各单元内部的温度分布，这里考虑了不对称传热系数对丝条冷却过程的影响，在丝条的迎风面和背风面采用不同的值，这可使得三角单元内部的温度分布更加接近实际情况，为计算机模拟出温度分布的结果提供了理论依据。     

Research on Magnetic Flux Leakage Detection Method for Subsea Pipeline

The intelligent pig based on the (MFL) is frequently used for in-line inspection of transportation pipelines. The article discusses the key technology of an MFL tool that includes the sensor‘s structure, the constitution of tool hardware, software and the analysis method of MFL signal.     

HMLS纤维模量应变曲线的多项式模拟

对HMLS纤维应力应变曲线取得的关键数据点采用多项式模拟，应用误差理论检验其合理性，得到合理优化的应力应变曲线，经求导后，用MATLAB语言模拟出模量应变曲线。     

化纤工程专家设计系统的开发

详细介绍了CBR技术(Case Based Reasoning)及其用它开发的化纤工程初步设计系统.着重对在化纤工程设计中采用CBR技术的必要性、可能性及特点作了说明,同时介绍了物流技术及其在化纤工程设计中的应用.     

Effect of Heat Transfer Coefficient on the Temperature Gradient for Hollow Fiber

The heat transfer coefficient h caused by blowing affects the heat transfer of fiber greatly. Especially, unsymmetrical blowing forms the unsymmetrical temperature gradient on the fiber cross-section. Based on the results of spuming simulation by computer, the changes of heat transfer coefficient on the cross-section along the spinning line and the effects on distributions of temperature gradients were discussed. It is showed that for the spuming simulation of hollow fiber under strong blowing condition, the heat transfer coefficient should be modified as :     

Studies on Melt Spinning of Sheath-Core Bicomponent Fibers: Fundamental Equations on the Dynamics of Melt Spinning

An attempt was made to numerically compute the temperature profile within the melt spinning of sheath-core bicomponent fibers by deriving a set of simultaneous partial differential equations. The effects of acceleration, gravity, and air friction on the kinetics of the polymer were included and the upper-convected Maxwell model as the constitutive equation was adopted in this model. The sheath-core bicomponent fibers were partitioned into a serial of circular cross section and it is assumed that each circular cross section has a temperature gradient while conducting the equation of energy balance. A mathematical model was developed to describe the melt spinning of sheath-core bicomponent fibers.     

Study on the Mechanical Properties of Carbon Nanotube/Polyacrylonitrile Composite Fibers

The method of preparing the multi-walled carbon nanotubes (MWNTs)-polyacrylonitriIe (PAN) composite fibers is described and the effects of draw ratio on the mechanical properties of CNT/PAN fibers have also been discussed. The results show that the degrees of MWNTs dispersion in the polymer matrix have much effect on the mechanical properties.     

中性笔出墨量与笔头结构匹配

为解决优质进口墨水与笔头匹配问题并保证中性笔的书写性能,基于有限元分析法,考虑中性墨水流变特性、笔头结构参数及加工误差等对出墨量的影响,建立中性墨水与笔头匹配的出墨量仿真模型并进行修正。结果表明,该出墨量模型的仿真结果与实际测试结果相近。该模型为中性墨水与笔头结构匹配出墨量的有效仿真提供了一种新方法,有助于提高出墨量仿真结果的准确性。