摘要
采用聚醚多元醇与甲苯二异氰酸酯反应制得预聚体,封闭部分异氰酸酯基团(—NCO),对自制的多胺固色剂进行接枝改性,制得水性聚氨酯接枝改性多胺固色剂,并对该固色剂的合成工艺和固色整理工艺进行了研究。优化的固色剂合成工艺为:n(PPG-800)/n(PEG-1000)=1∶2,多胺固色剂用量为4.3%(占预聚体总质量),n(NaHSO3)/n(—NCO)=0.5,R=2.0,pH=6.5;优化固色整理工艺为:染色棉织物→两浸两轧(固色剂40 g/L,轧余率80%)→预烘(70℃,4 min)→焙烘(140℃,4 min)。
Polyether polyol and toluene diisocyanate are used to synthesize prepolymer followed by terminating part of the isocy- anate groups （--NCO）, and then water-borne polyurethane grafted polyamine fixing agent is obtained by grafting modification. The synthesis and application process are studied. The optimum synthesis process is： n（PPG-800）/n（PEG-1000） = 1：2, the dosage of polyamine fixing agent 4.3 % （ accounting for the total mass of prepolymer）, n （ NaHSO3 ）/n （-NCO） 0.5,R = 2.0 and pH value 6.5. The optimum fixing process is： dyed cotton fabrics→double dip and double nip with fixing agent 40 g/L and liquor retention 80%→pre-drying at 70 ℃ for 4 min→curing at 140 ℃ for 4 min. The fixing agent has good fixing effect for reactive dyes and direct dyes, which is roughly equal to those of the commercial products.
出处
《印染》
北大核心
2011年第22期5-10,共6页
China Dyeing and Finishing
关键词
染色
固色剂
水性聚氨酯
改性
染色牢度
棉织物
dyeing
fixing agent
water-borne polyurethane
modification
color fastness
cotton fabric
