纯棉针织物耐久无甲醛阻燃整理

Durable Formaldehyde-free Flame Retardant Finishing of Pure Cotton Knitted Fabric

采用磷系无甲醛阻燃剂对纯棉针织物进行阻燃整理,探究了最佳整理工艺以及整理棉织物各项性能。结果表明:当阻燃剂用量为450 g/L、催化剂用量为10 g/L、165℃焙烘2 min时,织物的阻燃效果和强力保留较好;经30次及50次水洗后整理棉织物的损毁长度分别为8.5 cm、8.6 cm,整理棉织物甲醛含量低于5 mg/kg;由TG和DTG知,相对于未整理棉织物,整理棉织物的残碳率提高29.95%、最大质量损失速率降至15.93%/min,阻燃剂在整理织物受热分解最快的高温段起到减缓分解的作用;活性红B-2BF、活性黄B-4RFN、活性深蓝B-2GLN染色棉织物阻燃前后的色差分别为1.52、1.89、4.22。

In this paper,a new type of phosphorus-based formaldehyde-free flame retardant was used for flame-retardant finishing on pure cotton knitted fabrics,and the best finishing process and various properties of finishing cotton fabrics were explored.The results show that when the amount of flame retardant is 450 g/L,the amount of catalyst is 10 g/L,and the baking is 2 minutes at 165℃,the flame retardant effect and strength retention of the fabric are better.After 30 times and 50 times of washing,the damaged lengths of the finished cotton fabric are 8.5 cm and 8.6 cm,respectively.The formaldehyde content of the finished cotton fabric is lower than 5 mg/kg.According to TG and DTG and compared with unfinished cotton fabrics,the carbon residual rate of finished cotton fabrics is increased by 29.95%,and the maximum weight loss rate is reduced to 15.93%/min.Flame retardants are the fastest in the thermal decomposition of finished fabrics.The high temperature section plays a role in slowing down decomposition.The color difference of reactive red B-2BF,reactive yellow B-4RFN and reactive dark blue B-2GLN dyed cotton fabric before and after flame retardant is 1.52,1.89 and 4.22,respectively.