摘要
合成了一种新型磺酸型水性聚氨酯扩链剂,通过红外光谱、核磁共振等方法证明了其化学结构,并与异佛尔酮二异氰酸酯、聚酯多元醇反应,制备出了高固含量、高性能的磺酸型水性聚氨酯(WPUS)。与合成的羧酸型水性聚氨酯(WPUC)对比发现:(1)WPUS的固含量可达50%以上,而WPUC最高仅有38%;(2)WPUS的粒径比WPUC更小;(3)WPUS具有更好的热稳定性;(4)WPUS的弹性模量远远高于WPUC,且断裂伸长率仍保持较高水平;(5)WPUS耐水性不如WPUC,但耐溶剂性比WPUC好。
A new kind of sulfonated chain extender was synthesized successfully and its chemical struc- ture was confirmed by Fourier transform infrared spectroscopy and ＇ H - NMR,which was used to prepare the title high solid and high performance sulfimate - based waterborne polyurethane （WPUS） with isophorone diisocyanate （IPDI） and polyester polyol （PBAI000）. It was found when compared to the carboxylate - based waterborne polyurethane （WPUC） that the WPUS showed following special performance： （ 1 ） higher solid content, over 50%, （2） smaller particle size, （3） much better thermal stability, （4） excellent elastic modulus but still satisfying elongation, （5） a certain decrease in water resistance but a certain increase in solvent resistance.
出处
《涂料工业》
CAS
CSCD
北大核心
2012年第11期4-7,12,共5页
Paint & Coatings Industry
关键词
水性聚氨酯
磺酸型聚氨酯
羧酸型聚氨酯
高固含量
waterborne polyurethane
sulfonate - thane
high solid content based polyurethane
carboxylate- based polyurethane
high solid content
