摘要
以聚己二酸-1,4-丁二醇酯(PBA)和异佛尔酮二异氰酸酯(IPDI)为原料,以乙二胺基乙磺酸钠(AAS)和二羟甲基丙酸(DMPA)为亲水扩链剂制备了高固含量羧酸/磺酸盐型水性聚氨酯乳液。聚氨酯薄膜经红外光谱分析证实聚氨酯分子中含有磺酸基团。系统研究了—NCO/—OH物质的量比(R值)、DMPA含量和AAS含量对乳液及胶膜性能的影响。研究结果表明:当R值为1.6、DMPA含量为0.8%～1.0%、AAS含量为3.5%时,获得的乳液和胶膜的综合性能最佳。
With poly（1 ,4- butanediol adipate）（PBA） as soft chain segment and isophorone diisocyahate（IPDI） as hard chain segment, N - （2 - aminoethyl） - 2 - amino sodium ethyl sulfonate （AAS） and dimethylol propionic acid（DMPA） as hydrophilie chain extender, a earboxylate/sulfonate waterborne polyu- rethane dispersions（PUDs） was synthesized. The polyurethane molecule containing sulfonic acid groups was confirmed by infrared spectroscopic analysis. The effect of the --NCO/--OH ratio, the content of DMPA and AAS was systematically investigated. The results showed that the emulsion and PUDs film with optimal properties could be obtained when the --NCO/--OH ratio was 1.6 and the content of DMPA and AAS was 0.8% and 3.5% respectively.
出处
《涂料工业》
CAS
CSCD
北大核心
2013年第3期17-20,24,共5页
Paint & Coatings Industry
基金
嘉兴市科技计划项目(2012BY7006)
关键词
水性聚氨酯
自乳化
高固含量
磺酸盐
waterbore polyurethane
self - emulsifying
high solid content
sulfonate
