滑弹型硅油的制备及在棉织物整理中的应用

Preparation of smooth and elastic silicone oil and its application in cotton fabrics finishing

以异氟尔酮二异氰酸酯(IPDI)、聚丙二醇(PPG-1000)、4,4’-亚甲基双(3-氯-2,6-二乙基苯胺)(MCDEA)和聚氧化丙烯三醇(N3010)为反应原料,合成聚氨酯预聚体,再与双端氨基聚硅氧烷发生聚合反应,并用甲乙酮肟(MEKO)封闭分子链末端的异氰酸酯基团,制备出一种滑弹型硅油。采用控制变量法优化合成工艺条件:IPDI与PPG-1000的物质的量比值为2.3;MCDEA和N3010的用量分别为单体总质量的2%和8%。将滑弹型硅油应用于纯棉织物的后整理,结果表明:在整理剂用量为50 g/L、浴比为1︰30、焙烘温度为120℃、焙烘时间为90 s的工艺条件下,织物的表面光滑性大大提高,经向弯曲刚度由0.093 3 gf·cm2/cm降低到0.087 2 gf·cm2/cm,经、纬向弹性回复角分别可达150°和169°,整理后织物具有良好的柔软度、滑弹性。

Polyurethane prepolymer was synthesized by using isophorone diisocyanate(IPDI)and poly propylene glycol(PPG-1000)and 4,4’-Methylenebis-3-Chloro-2,6-Diethylaniline(MCDEA)and polyoxypropylenetriol(N3010)as the raw materials.Then,polymerization reaction happened to the polyurethane prepolymer and double-ended aminopropyl silicone.Meanwhile,Methyl ethyl ketone oxime(MEKO)was used to close isocyanate group at the end of molecular chain so as to prepare smooth and elastic silicone oil.The synthetic process condition was optimized by variable control as follows:substance amount ratio of IPDI and PPG-1000 was 2.3;the dosage of MCDEA and N3010 was 2%and 8%of the total mass of the monomer,respectively.The smooth and elastic oil was applied in cotton fabrics finishing,and the application result showed the surface smoothness of the fabric was improved greatly and the warp bending rigidity of the treated fabric decreased from 0.093 3 gf·cm 2/cm to 0.087 2 gf·cm 2/cm under the following conditions:the dosage of finishing agent 50 g/L,bath ratio 1︰ 30,curing temperature 120℃and time 90 s.The warp and wept of elastic recovery angle of treated fabric were 150°and 169°,respectively.The results indicate the treated fabrics have good softness and elasticity.