文档介绍：摘要高性能水性聚氨酯胶粘剂的制备和性能研究专业:高分子化学与物理硕士生:李永炕指导教师:王小妹(副教授) 摘要本文以HDI、IPDI、PBA、DMPA为主要原料采用丙酮法合成了适用于鞋材粘合的DMPA型水性聚氨酯分散液;为进一步提高稳定性,采用二氨基苯磺酸钠作为亲水单体制备了磺酸型WPU,,4丁二醇亲水单体,并利用其制备了以二羟基磺酸盐作为亲水单体的水性聚氨酯自乳化分散液,对所合成的产品进行了性能表征, 鞋用胶粘剂作参照对比物,重点考察了其对PVC革的T剥离强度影响因素。为了制褥性能优越的DMPA型水性聚氨酯胶粘剂,本文研究了影响水性聚氨酯乳液性能的某些因素,例如:DMPA含量、软段种类、R值、,最终确定了DMPA用量为5%,R=~,采用 ,并采用中和与乳化同时进行的工艺,分散时问大于30min 所合成的水性PU分散液综合性能较好;另外还对聚氨酯乳液的分子量和结晶性能进行了表征。在研究水性聚氨酯胶粘剂对皮材的粘结性能方面,研究了固化剂用量、活化温度、活化时间、贴合放置时间等对剥离强度的影响因素。研究结果表明:采用4%的固化剂用量,在5012下活化10rain再贴合可以使胶层具有较高的粘结强度,T剥离强度可达到130~140 N/25mm:同时贴合后随着胶层的结晶越来越多,粘结强度也越来越高,24h之后变化减缓。, 结果表明:磺酸型水性聚氨酯比DMPA型水性聚氨酯具有更好的稳定性;磺酸型聚氨酯乳液的拉伸强度更大,,而磺酸型的达到224MPar 磺酸型水性聚氨酯的粘结强度也较大,24hT剥离强度DMPA型的为129 摘要 N/25mm,磺酸型的能达到135N/25mm,而U.“是145N/25ram,,10rain T剥离强度只有20N/25mm,而自制的都在49N/25mm以上。关键词:水性聚氨酯,磺酸钠,鞋胶,T剥离强度 Preparation and properties study ofhigh performance water-based polyurethane adhesive Major:Polymer Chemistry andPhysics Name:Li Yongkang Supervisor,ProfessorWangXiaomei Abstract Water borne polyurethane adhesive forshoes was prepared from thematerials of HDI、IPDI、 stability ofthe dispersion,we synthesized ahydrophilic monolnef2-SodiumSulphonate-I,4- kindsofsulphonate stylepolyurethane dispersion was prepared using 2-SodiumSulphonate-1,4-butanediol andanother hydrophilic monomer 2,4-diaminobenzenesulfonic oftheproducts weprepared we∞ tested contrast toU·54formBayer which iswidely thefactorswhich impact Tpeelstrength Wasstudied. Inorder togethigh performance waterbornepolyurethane adhesive,firstly,we studied thefactors which impact theproperties ofpolyurethane dispersion,such as content ofDMPA、妊11d ofsoftsegment、R value、neutralization order andemulsion thatitwasthe best to use PBA-2000鹤soft segment,5%DMPA, R=— the besttechnics栅neutralization taking at