BCF纱热流变形机理的研究

对BCF纱热流变形过程中丝在变形管和填塞管中的受力情况及形态变化进行了实验研究和理论分析。对丝的弯曲过程进行了描述,并在此基础上概括了BCF变形机理。研究结果表明:BCF纱的大多数弯曲是在丝撞击丝塞时产生的,变形管的主要作用是使丝充分分离,而填塞管的作用除保证丝弯曲外还对已形成的弯曲进行定型。     

低温环境下多层衣着的湿传递特征的研究

环境温度对织物的热湿传递影响是显著的，采用自行研制的低温下织物热湿传递特性试验装王，采用Coolmax涤纶针织物和纯棉针织物作内衣层试样，Thermolite Barrier作中间保暖层试样，涤纶花瑶PrFE层合防水透湿织物和涤纶春亚纺PU涂层织物作外衣层试样，在-20℃的低温环境下测试并研究多层衣着的湿传递特征，并推导了多层衣着的总平均湿阻与各层织物的平均湿阻之间的关系。实验结果显示，在-20℃低温环境下的热湿传递过程中易产生凝结，凝结多发生在内衣层和中间保暖层，透湿性好的外衣层和吸湿好的内衣层的总平均湿阻值小，导湿性能好的内衣层上凝结水量少。     

转杯纺棉氨复合纱工艺及其成纱性能研究——氨纶丝牵伸倍数对成纱性能的影响

介绍了转杯纺棉氨复合纱的纺纱原理，并在经过改装的转杯纺纱机上，选用两种规格的氨纶丝，通过调整氨纶丝的牵伸倍数纺制不同外观和性能的转杯纺棉氨复合纱。经纱线外观和性能的测试分析，表明氨纶丝牵伸倍数对转杯纺棉氨复合纱的外观和性能有一定的影响。     

Study on an Organic Hybrid Made from Chlorinated Polyethylene and 2,2''''-methylene-bis- (4-methyl-6-cyclohexylphenol)

The dynamic mechanical properties and miscibility of an organic hybrid made from chlorinated polyethylene (CPE) and 2, 2'-methyIene-bis-( 4-methyl-6-cyclohexylphenol) ( ZKF ) are mainly discussed in this paper. It is found that ZKF acts as an antiplasticizer in CPE matrix and has good miscibility even with large ratio in CPE /ZKF hybrids. The glass transition temperature of various CPE /ZKF hybrids determined by DSC give a good fit to Wood's equation. Bifunctional ZKF is supposed to improve the intermolecular force of CPE, and the improvement is developed when the ZKF content increases. On the other hand, the viscoelastic properties are highly improved with the addition of ZKF. TA and tanδ peak values increase when the ZKF content increase in the CPE /ZKF hybrids, the damping capacity has been improved during the glass transition of CPE /ZKF hybrids. In addition, the glass transition temperature shifts to room temperature from the low temperature with the continuous addition of ZKF to CPE.     

聚氨酯涂层织物防水、透湿性能的研究

防水性能和透湿性能达到和谐统一是防水透湿织物需要解决的关键问题.这里基于对微孔亲水性和非亲水性聚氨酯（PU）涂层织物的防水、透温性能和结构参数等的测试和研究,来阐明织物防水、透湿机理,透过聚氨酯（PU）涂层织物的水气总量由气相的＂孔隙扩散＂、气相和液相的＂吸附-扩散-解吸＂和液相的＂毛细管传递＂组成,织物的防水性能与液相的＂吸附-扩散-解吸＂有关,并受到液相的＂毛细管传递＂影响.