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            Development of multifunctional flame retardant protective fabric of aramid fiber
            
                    Development of multifunctional Flame retardant protective fabric of aramid fiber
            
1313 aramid blended yarn and pure cotton yarn were used as raw materials, and different specifications of aramid fiber blended fabric were made by Fang Ping tissue and anti tear lattice structure. After testing, the average limiting oxygen index of Fang Ping tissue fabric and anti tear lattice fabric is 25.6% and 27.3%, which meets the requirements of Flame retardant fabric. The water repellent and oil repellent finishing of fabric was carried out by using HPC 5 finishing agent and HPC 4 crosslinking agent. The orthogonal test of three factors and three levels was carried out with the amount of finishing agent, the amount of crosslinking agent and the baking time as the factors. The results showed that 3 factors of Fang Ping fabric water and oil repellent effect is not obvious, but the effect of the dosage of finishing agent and crosslinking agent on the anti tearing grid fabric water repellent effect, small effects of the 3 factors on anti tear effect of oil repellent fabric lattice. With the improvement of science and technology, requirements on fabric functional construction industry has become more and more intense, tourism, transportation, industrial cloth, aerospace, military and other industries is an urgent need to develop a multifunctional textile flame retardant and water repellent breathable, repellent and antistatic properties of various oil set in one of the. Polysulfonamide, generic polyphenylsulfone two of benzene carboxamide fiber, has excellent heat resistance, thermal stability, high dimensional stability, flame resistance, electrical insulation and radiation resistance, and has good physical and mechanical properties, chemical stability and dyeability, is the development of thermal protection with ideal raw material products. 1 polysulfonamide fabric warp yarn processing 1.1 using 42 tex 60 /40 polysulfonamide / Kevlar 1313 siroyarn, weft selected 14 tex cotton carded yarn. The test results were as follows: fracture strength was 20.78 C N/tex, elongation at break was 18.27%, hairiness index was 26.46 /m above 3 mm, and evenness CV value was 12.79%. .2 design specification design of fabric warp density was 300 /10 cm, respectively, 215 weft density root /10 cm, 235 /10 cm and 255 /10 root cm, fabrics using Fang Ping two two and anti tearing grid organization, ripstop fabric on 1.3 lattice fabric processing process of fabric processing process 1332M: winder, GA391 type single yarn sizing machine, SW550 warping machine, and wear knot through SL8900Evergreen automatic woven fabric processing proofing machine 1.4 when the problems needing attention in order to reduce the warp breakage, warping speed should be low to master; the purpose is to enhance the warp sizing of antifriction and pasting hairiness, eliminate snarling. The content of PVA205 is 40%, LX - 6 and JX - 2 acrylic acid propylene OI:10.16549/j.cnki.issn.1001-2044.2014.09.007 Shanghai textile technology SHANGHAI TEXTILE SCIENCETECHNOLOGY, drying room temperature maintained above 70 DEG C, sizing speed of 35 m/min; in the weaving process, in order to make the shuttle clear clear, should be adopted in order to reduce the tension larger; weft breakage, weft tension should be smaller master. 2 flame retardancy test fabric fabric test in JF 3 type oxygen index measuring instrument, sample size is 14 * 5 cm, 5 cm test sample combustion automatically extinguished when the oxygen index is limiting oxygen index. Fang Ping tissue in this experiment and anti tearing grid fabric average limit oxygen index were 25.6% and 27.3%, has reached the limit oxygen index of 23% Flame retardant fabric, both fabrics can achieve good flame retardant effect. Selection of oxygen concentration 29.8%, test specimen damage length, damage length project weft density / test oxygen concentration of 29.8% in the samples of root - (10cm) - 1300 * 215 300 * 235 300 * 255 /mm 2.78 2.31 Fang Ping tissue damage length 2.26 ripstop Plaid damage length data 2.63 2.49 that /mm 2.54, the same a fabric, in a certain range, the greater density, the smaller the damage length, flame retardant effect is better; for the same kind of fabric density, different tissue damage length is different, ripstop fabric such as flat lattice damage length of tissue surface material, good flame retardant effect. Damaged length and fabric fabric density, density, root number of square meters of flame retardant yarn increased, flame retardant effect, reduce the damage length. 3 the influence of finishing process on the water repellent and oil repellent properties of fabric. 3.1 water repellent and oil repellent finishing process was carried out by using fluorine containing water repellent and oil repellent finishing agent HPC - 5 finishing agent and HPC - 4 crosslinking agent. The orthogonal experiment of three factors and three levels was carried out with the amount of HPC - 5 finishing agent, the amount of HPC - 4 crosslinking agent and the baking time as the factors, and the orthogonal experiment design showed 2. In the experiment, the baking temperature is 180 degrees centigrade. 2 water and oil repellent finishing agent A orthogonal experimental design level of L - 1B / g dosage of crosslinking agent / G - L - 1C / Min1 4010125020236030 33.2 baking time and water repellent oil repellent 3.2.1 effect test method test method for water repellent water test reagent: distilled water, isopropanol reagent. According to 3M - II - 1988 test methods for water repellency test, isopropyl alcohol and distilled water to the different volume ratio of 0 to 10, 10 for the best, 0 ~ 10 levels of water: isopropyl alcohol were 10, 0, 9, 1, 8, 2, 3, 7: 6: 4, 5, 5, 4, 6, 3, 7, 2, 8, 1, 9, 0: 10. Evaluation of water repellent effect: in the 3 position of 4 cm away from the sample, a droplet with a diameter of 5 mm was added from the low to the high in series, and 2 drops or more of the 3 drops were not wetted in the 10 s. With a high level of test solution, until not by far, the last through the level of water repellent fabric. Test method of oil repellent effect of 3.2.2
            
                  
            

                    
                
            

                
        
            

        
        
            
            

            
           
            

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