Comfort Analysis Of The Outer Layer Fabric In Antitoxic Clothing

The antitoxic clothing can protect the people who are working in the toxic environments against the toxic gas and liquid. In the process of the antitoxic clothing development there are some contradictions between the protection and physiological properties. In the premise of meeting the functional requirements, the comfort problems due to thickness and weightiness appear to be particularly prominent. The main problem to be solved is to improve the comfort of the antitoxic clothing, and ensure the functional requirements and basic mechanical properties at the same time. With the antitoxic requirements, it's generally difficult to improve the comfort of the outer layer fabric in the antitoxic clothing by changing antitoxic technology. Therefore, by improving the comfort of the outer layer fabric of the antitoxic clothing to realise the comfort improvement of antitoxic clothing has become the main direction of the relevant researches.On the basis of meeting functional requirements and basic mechanical properties, the key point is to find an environment friendly fiber to improve the comfort of the outer layer fabric of the antitoxic clothing.In order to use the original finishing technology, the performance of the selected materials should be close to cotton which is used in existed antitoxic clothing. Riche140~s, cotton of compact spinning50~s, Chinese long staple cotton 50~s, Egypt long staple cotton 50~s, Lyocel148~s and compact spinning cotton50~s/2 from the plants are selected as materials. The preparations of weaving include doubling of single yarn and setting the weaving parameters of the fabrics. After the weaving, by testing the area density, thickness, tensile strength of the fabrics, samples which can meet basic performance requirements are achieved. The tearing strength, moisture permeability, air permeability and heat insulating ability of the selected samples are tested. By comprehensively evaluating the basic performance and the comfort index, the parameters of three weaving fabrics are achieved. The parameters are as follows: cotton of compact spinning50~s/2, cotton of compact spinning and Chinese long staple cotton 50~s/2, cotton of compact spinning 50~s and Lyocel148~s are as warps and wefts; warp density is 415/10cm and weft density is 212/10cm; fabric weave 2/2 twill. The three sample fabrics are finished with the original finishing technology. By comparing the basic mechanical properties and comfort index with the antitoxic clothing produced in the plant and Meng fenye's testing results, some conclusions are as follows: the weight and thickness of the designed samples are decreased; the weft tensile strength decreased; the warp tensile strength increased; the moisture permeability and air permeability improved; the heat insulating ability of the fabrics increased; the drape properties of the fabrics improved; the bending elasticity further improved. The conclusions prove the feasibility of the design. By comprehensively evaluating comfort index of the finished samples with fuzzy mathematics method, the conclusions are as follows: in the summer or hot areas, the sample, with which warp density 415/10cm, compact spinning cotton and Chinese long staple cotton 50~s/2 yarn as the warp and the weft is the most comfortable; in the winter or cold areas, the sample, with which warp density 415/10cm, compact spinning cotton 50~s/2 yarn as the warp and the weft is the most comfortable. The antitoxic clothing from the plant is suitable in the winter or cold areas.