摘要
采用丙烯酸和双端羟基聚醚硅油为原料,通过酯化反应制备了双端丙烯酰氧基聚醚硅油,研究了催化剂用量、反应温度和时间、溶剂和阻聚剂用量等因素对酯化率的影响。用FT-IR和1H-NMR对产物结构进行表征,并将其应用于聚丙烯酸酯乳液制备,测定了改性乳液及其涂料印花性能。结果表明:酯化反应最佳条件为催化剂和溶剂用量分别为反应物总质量的5%、70%,阻聚剂用量为丙烯酸质量的0.75%,反应温度为110℃,反应时间为4 h;FT-IR和1H-NMR谱图表明酯化产物结构为丙烯酰氧基聚醚改性硅油;改性乳液胶膜的疏水性变大,断裂强度略有下降,断裂延伸率明显变大,断裂功略有增加;改性乳液应用于涂料印花,印花织物干、湿摩擦牢度可达4级及以上,手感柔软。
A double-terminated acryloyloxy-polyether silicone oil was prepared by esterification reaction from acrylic acid and polyether silicone oil with double terminated hydroxyl groups.The influences of reaction factors such as amount of catalyst,reaction temperature and time,dosage of solvent and inhibitor on esterification rate were investigated,and the product was characterized by the structure using FT-IR and 1H-NMR and then was applied in the preparation of silicon-modified polyacrylate latex.The properties of silicon-modified polyacrylate latex were tested along with its pigment printing behavior.The results showed that the optimal esterification conditions were as follows： amounts of catalyst and solvent were 5% and 70% of total reactant mass,respectively,dosage of inhibitor was 0.75% of the amounts of acrylic acid,reaction temperature was 110 ℃ and reaction time was 4 h.FT-IR and 1H-NMR analysis indicated that the structure of esterified product was acryloyloxy-polyether silicon oil.Hydrophobicity of the modified polyacrylate latex film was enhanced obviously with breaking tenacity decreased slightly,breaking extension increased significantly,and work of break increased a little.When the modified polyacrylate latex was used in pigment printing,the dry and wet rubbing fastness of the pigment printed fabric reached rating 4 or above,and its handle became softer.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2012年第10期72-78,共7页
Journal of Textile Research
关键词
聚丙烯酸酯
酯化反应
丙烯酰氧基聚醚硅油
涂料印花
polyacrylate latex
esterification reaction
acryloyloxy-polyether silicone oil
pigment printing
