研究在转杯纺加捻区中加装阻扭件，然后选用相同的棉条纺制不同捻系数的转杯纱（加装阻扭件和不加装阻扭件）和环锭纱，并测试其成纱的强伸性能、表面形态和扭转性能。测试结果表明，加装阻扭件的转杯纱可以适当改善转杯纺的加捻效果，进而适当提高了转杯纱的成纱强力。

对芳纶纤维的弯曲和扭转疲劳进行了测试分析，并与其它纤维进行比较，对它们的破坏机理作了探讨。

A complete representation of the skin microclimate-fabric-environment includes the skin layer S, fabric F and outside environment E. Between the skin and fabric is the "clothing microclimate" M. Condensation occurred in the fabric inner surface depends upon the model perspiration escaped from the human body transfer through the clothing which determined by the properties of the fabrics. A new measuring apparatus, which conducted under computer control, described in this paper can be used to investigate whether condensation occurred on the fabrics. The measuring apparatus can be used to examine, record and display temperature and relative humidity simultaneously and permits rapid testing of small quantities of fabrics in a short amount of time. It is logical to use the apparatus described in this paper rather than the ASTM 96E-00 to investigate water vapor permeability of fabrics, especially condensation on the fabrics inner surface.

转杯纺纱过程中断头的主要部位在成纱形成过程的一段，此段捻度小、强力低。如果为了扩大转杯纱的应用范围以及改善转杯纱的有关性能，纺制低捻度转杯纱，则断头率进一步提高，生头成功率进一步降低。这里研究在转杯纺加捻区中加装阻扭件后，讨论分析加捻区中纺纱张力的变化，进而构成阻扭件产生的阻扭矩以及形成阻扭件前后区域埝度分布的变化并建立捻度分布模型。理论分析结果表明，加装阻扭件后，成纱捻度不变，但提高了自由端成纱形成过程一段的捻度，这对降低断头率、提高生头成功率有利。