含疏水侧基的水性聚氨酯的合成及其增稠性能  

Synthesis and Thickening Property of Waterborne Polyurethane with Hydrophobic Pendent Groups

作　　者：杨升[1] 周瑜[1] 林银利[1] 杨明华[2] 郑加英[1] 高文[1] 黄丹[1] 陈红祥[1] 

机构地区：[1]煤转化与新型炭材料湖北省重点实验室,武汉科技大学化学工程与技术学院,武汉430081 [2]丽水学院理学院,浙江丽水323000

出　　处：《涂料工业》2012年第11期18-21,26,共5页Paint & Coatings Industry

基　　金：湖北省教育厅科研计划项目(B20121110);武汉科技大学绿色制造与节能减排科技研究中心开放基金资助项目(C1202);丽水市科技局项目(2011JYB09)

摘　　要：利用六亚甲基二异氰酸酯(HDI)与聚乙二醇(PEG)进行本体聚合得到聚氨酯预聚体,并通过十六醇封端、1,2-十四碳二醇扩链合成了水性聚氨酯(WPUT)缔合型增稠剂。采用傅里叶变换红外光谱仪(FT-IR)、乌氏黏度计表征了WPUT的结构。通过黏度的测定研究了疏水性扩链剂、PEG/HDI物质的量比、PEG的相对分子质量、WPUT含量等因素对水性聚氨酯乳液增稠效果的影响。结果表明:疏水性扩链剂的引入提高了WPUT的增稠效果;另外发现减小PEG/HDI物质的量比值、PEG相对分子质量为6 000并在较低浓度范围内提高染料体系中WPUT含量时,WPUT对水性聚氨酯乳液的增稠效果更加明显。The waterborne polyurethane （WPUT associative thickeners were synthesized by the bulk polymerization of hexanmethylene diisocyanate （HDI） and polyethylene glycol （ PEG）, with 1,2 - tetrade- canediol as chain extende and endcapped by hexadecanol. The structure of WPUT was characterized by Fou- rier transform infrared spectra （ FT - IR） and ubbelohde viscometer. The effects of various factors such as the hydrophobic chain extender, PEG/HDI molar ratio, molecular weight of PEG and the WPUT content on their thickening property were studied by the measurement of rotary viscosity. The results showed that incor- poration of hydrophobic chain extender into polyurethane could enhance the thickening effect of aqueous pol- yurethane suspension, and that their thickening effect was improved obviously by decrease of the PEG/HDI ratio, using PEG6000 and increase of the WPUT content at low concentration range.

关 键 词：疏水性扩链剂 水性聚氨酯 缔合增稠剂 增稠 

分 类 号：TQ630.43[化学工程—精细化工]