Flame retardant STC is used to finish polyester fabrics with flame retardant coating
Flame retardant STC is used to apply flame retardant coating to polyester fabric
Abstract: In view of the particularity of military sleeping bags, the environmentally friendly flame retardant STC was added to the polyurethane coating glue to finish the polyester fabric with flame retardant coating. The effects of the mass fraction of flame retardant STC and soft and smooth C-1 and the amount of glue on the fabric properties were determined. Using the optimized process of 40% flame retardant STC, 15% soft and smooth, and 12g/m2 glue amount, the flame retardancy and other performance indicators of the fabric can meet the requirements of flame retardant sleeping bag external materials.
Keywords: coating finishing; flame retardant; waterproof and breathable; polyester
Introduction: Polyester is a synthetic fiber that is widely used in the world and has a wide range of applications. Most of the external materials of sleeping bags are made of polyester fabrics. The limiting oxygen index of polyester is about 21%, its combustion heat value is high, and it is a flammable fiber. The flame retardancy of polyester fabrics can generally be achieved by preparing flame retardant fibers, padding flame retardants or implementing flame retardant coatings. Flame-retardant coatings are widely used in many fields because they are easy to process, have good flame-retardant effects, have excellent washability, and can impart other functions to fabrics. Compared with traditional halogen flame retardants, organic phosphate compound STC has the advantages of good high temperature stability, halogen-free, low smoke, non-moisture absorption, excellent wash resistance and good flame retardancy.
In this test, STC is used as a flame retardant additive and a suitable coating adhesive is used to finish the polyester fabric with a flame retardant coating, so that the fabric not only has a good flame retardant effect, but also has high strength, low temperature resistance, and resistance to Hydrostatic pressure and moisture permeability. At present, the product has undergone large-scale production testing, and all indicators meet the requirements of the army’s individual sleeping bag materials. 1 Test 1.1 Fabric, Reagents and Instruments Fabric 210T, 7.7tex×7.7tex (70D×70D), 0.3 grid polyester mesh (area density 62g/㎡) Reagent flame retardant STC (Archroma Chemicals), waterproof and breathable coating Layer glue FS-5800S, cross-linking agent DF-897, cross-linking accelerator DF-899, soft and smooth C-1, waterproof agent 508A (Liaoning Hengxing Fine Chemical Co., Ltd.); toluene, butanone (commercially available industrial grade) , Dispersant 3250 (BASF) instrument IKAEUROSTAR60digital dispersing machine (Guangzhou Yike Laboratory Technology Co., Ltd.), GZX-9076MBE electric blast drying oven (Shanghai Boxun Industrial Co., Ltd. Medical Equipment Factory), HD815A fabric flame retardant performance tester (Nantong Hongda), ISO-811 water impermeability tester (Shanghai Luozhong Science and Technology Research Institute), YG501D moisture permeability tester and YG0261D electronic fabric strength machine (Wenzhou Fangyuan), plastic ultra-low temperature brittleness tester (Shanghai Pengpu Refrigeration Co., Ltd. ) 1.2 Flame retardant coating process process padding waterproofing agent (3% waterproofing agent 508A, rolling residue rate 45%) → drying (180°C, 2min) → coating → pre-baking (120°C, 1.5min) → baking Bake (170℃, 1.5min) coating glue formula/% coating glue FS-5800S100 flame retardant STC20~50 cross-linking agent DF-8971.5 accelerator DF-8991.2 soft and smooth C-15~20 appropriate amount of toluene appropriate amount of butanone Toluene and MEK are used as solvents to adjust the coating viscosity. In this test, the best effect was achieved when the coating viscosity was 15000 mPa·s. 1.3 Test method 1.3.1 The flame retardant performance is measured according to GB/T5455-1997 “Vertical Method for Textile Combustion Performance Test”. 1.3.2 The moisture permeability is measured in accordance with GB/T12704.2-2009 “Method for Determination of Moisture Permeability of Fabrics, Moisture Permeability Cup Method”. 1.3.3 Hydrostatic pressure is measured in accordance with GB/T4744-1997 “Hydrostatic Pressure Test for Determination of Water Permeability Resistance of Textile Fabrics”. 1.3.4 Tear strength is tested in accordance with GB/T3917.3-1997 “Tear Properties of Textile Fabrics Part 3: Determination of Tear Strength of Trapezoid Samples”. 1.3.5 Low temperature resistance is tested in accordance with GB/T12584-2001 “Low Temperature Impact Test of Rubber or Plastic Coated Fabrics”. jtERPpg
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