Flame-retardant coating finishing of polyester fabric with flame retardant STC

Flame-retardant coating finishing of polyester fabric with Flame retardant STC
Abstract: in view of the particularity of the use of military sleeping bags, the environmentally friendly flame retardant STC was added to the polyurethane coating adhesive to finish the flame retardant coating of polyester fabric. The influence of the flame retardants STC and the soft and slippery C-1 mass fraction and the amount of glue on the properties of the fabric were measured. Using flame retardant STC40%, soft and smooth 15% and glue up 12g/m2, the flame retardancy and other performance indicators of fabrics can meet the requirements of exterior materials for flame-retardant sleeping bags.
Key words: coating finishing; flame retardant; waterproof and moisture permeable; polyester fiber
Preface polyester is the most widely used synthetic fiber in the world, and most of the external materials for sleeping bags use polyester fabric. The limit oxygen index of polyester fiber is about 21%, and the combustion heat value is high. It is a kind of flammable fiber. The flame retardancy of polyester fabric can be achieved by preparing flame retardant fiber, impregnating flame retardant or carrying out flame retardant coating. The flame retardant coating is widely used in many fields because of its simple processing, good flame retardancy, excellent washability and other functions. Compared with traditional halogenated flame retardants, organophosphate STC has many advantages such as high temperature stability, halogen free, low smoke, no moisture absorption, good washability and good flame retardancy.
In this experiment, STC is used as flame retardant additive, and the suitable coating adhesive is applied to finish the flame retardant coating of polyester fabric, so that the fabric has good flame retardant effect and high strength, low temperature resistance, hydrostatic pressure and moisture permeability. At present, the product has carried out a large production test, and all the indicators meet the requirements of the soldier's sleeping bag material. 1 test 1.1 fabrics, reagent and instrument fabric 210T, 7.7tex * 7.7tex (70D * 70D), 0.3 polyester mesh cloth (surface density of 62g/ flame retardant reagent STC (m) high chemical), waterproof breathable coating glue FS-5800S, crosslinking agent DF-897, cross-linking agent DF-899, soft C-1, brilliant slip waterproof agent 508A (Liaoning Hengxing Fine Chemical Co. Ltd.); toluene, butanone (industrial grade sale), dispersant 3250 (BASF) IKAEUROSTAR60digital instrument (dispersion machine Guangzhou Y-key Laboratory Technology Co Ltd), GZX-9076MBE type electrothermal blowing dry box (Shanghai Boxun Industry Co. Ltd. medical equipment factory), Flame Retardant Tester HD815A fabric (Nantong grand), ISO-811 water resistance tester (Shanghai Luozhong science and Technology Research Institute), YG501D moisture tester and YG0261D type electronic fabric strength tester (Wenzhou area), ultra low temperature brittle plastic Test instrument (Shanghai Pengpu Refrigeration Co. Ltd.) 1.2 flame retardant coating process padding waterproof agent (3% 508A waterproofing agent, rolling and drying rate of more than 45%) (at 180 2min), coating, pre drying (at 120 1.5min), baking (at 170 1.5min) coating formula: flame retardant adhesive FS-5800S100 STC20~50 crosslinking agent DF-8971.5 accelerator DF-8991.2 soft C-15~20 toluene butanone moderate amount of brilliant slip with toluene and butanone as solvent viscosity adjusting coating. In this experiment, the viscosity of the coating adhesive is 15000mPa. S, the effect is good. The flame retardancy of the 1.3 test method 1.3.1 was determined according to the vertical method of GB/T5455 - 1997 "textile combustion performance test." The moisture permeability of 1.3.2 was determined according to GB/T12704.2 - 2009 method of moisture permeable cup of fabric moisture measurement. The static water pressure of 1.3.3 is determined according to the hydrostatic pressure test of the anti seepage resistance of textile fabric by GB/T4744 - 1997. 1.3.4 tear strength according to GB/T3917.3 - 1997 "textile fabric tearing performance of the third part: Trapezoidal specimen tear strength test" test. The low temperature resistance of 1.3.5 was tested according to the low temperature impact test of GB/T12584 - 2001 "rubber or plastic coated fabric". JtERPpg