Storage Statibility Of Delay-curing Reaction System

Delay-curing finishing is commonly used processing method of cotton fabric durable press finishing.Introduce the delay curing process technology,wash and wear finishing can be processed separately from fabrics and clothing manufacturers.The garlent curing finishing can obtain good wash and wear effect,good durable fold,flat and level Seam,simple production process,low cost.But storage and transportation stability without cured sensitizing fabrics after preliminary drying is poor,need transport and storage at low temperature and lead to cost increase And finished fabric whiteness is down,strength is decrease,easy to cause difficult to remove wrinkles in the packing and shipping process.To solve these problems,the topic is proposed to select a catalytic crosslinking system which suits for delay curing,to improve the storage stability of the sensitized fabrics after preliminary drying and reduce the production cost.Firstly,use five kinds finishing agent of durable press effect good on the market such as finishing agent A,B,C,D,E which process durable press finishing for cotton fabric.By comparing the finishing effect of different finishing aaent and the storage stability of sensitizing fabrics,E finishing agent appropriates for finishing agent of delay-curing crosslinking reaction system.Cotton fabric in 140℃ by 9min curing conditions,by the 150g/L E finishing agent,25g/L MgCl2,20g/L softener A,30g/L softener B,30g/L formaldehyde capture agent,lg/L penetrating agent,1g/LHAC,0.1 g/L NaBF4,after finishing fab.ic DP rating is 3.5grade,weft tear strength is 1.8lbs,weft tensile strength is 43.41bs,whiteness is 146,crease recovery Angle is 300°.Fabric finishing process is pad finishing liquid→preliminary drying(80x1 min,including tidal rate of 6～10%)→press(160x15s)→curing(120～150℃,3～9min)and the finishing formula is E finishing agent 90～200g、L,MgCl218～40g/L,softener A 20g/L,softener B 30g/L and formaldehyde capture agent 30g/L,penetrating agent lg/L,HAC 1g/L and 0.1g/L NaBF4.Adding different additives to finishing liquid such as triethanolamine hydrochloride,cationic polymeric acid absorption agent NT-R412,waterbome polyurethane DM-3541,triethanolamine,HAC-NaAC buffer solution,by comparing wash and wear effect of the finishing product and the storage stability of sensitizing fabrics,determining application effects of TEA and HAC-NaAC buffer solution is ideal.Among them,the best dosage of TEA is 0.9g/L,now finished fabric DP rating is 3.5grade,crease recovery Angle is 299°,weft tear strength is 1.81bs,latitudinal tensile strength is 45.11bs,whiteness 141,strength curve of finish fabric is smooth under different press conditions;The best dosage of HAC-NaAC buffer solution is 20g/L,under the condition,the finish fabric DP rating is 3.5grade,crease recovery Angle is 303°,latitude tear strength is 1.81bs,latitudinal tensile strength 38.41bs,whiteness is 141,fabric strength curve is flat under the different pressure temperature conditions.The topic research results finally put the sample in the workshop,the experimental results are in conformity with laboratory results,Storage stability is improved obviously,now already the produced garment,finishing effect is ideal.