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Citation: HOU Meng-Hua, LIU Wei-Qu, LI Yan, CHEN Jing-Hua. Waterborne Polyurethane Doubly Modified by Montmorillonite and Siloxane[J]. Chinese Journal of Applied Chemistry, ;2005, 22(10): 1132-1136. shu

Waterborne Polyurethane Doubly Modified by Montmorillonite and Siloxane

HOU Meng-Hua ^a,b ,
LIU Wei-Qu ^a,, ,
LI Yan ^a,b ,
CHEN Jing-Hua ^a,b

1.
a Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650;
2.
b Graduate School of the Chinese Academy of Sciences, Beijing

Corresponding author: LIU Wei-Qu,
Received Date: 12 November 2004
Available Online: 30 April 2005
Fund Project: 广州市天河区科技局科技攻关项目(2002XGP28) (2002XGP28)

A series of waterborne polyurethane(WPU) emulsions with montmorillonite(MMT),toluene diisocyanate,dimethylolpropionic acid,γ-aminopropyltriethoxysilane and polyoxypropylene glycol etc.as the starting materials were prepared via the intercalative polymerization method.The X-ray diffraction and SEM results showed that the gallery distance of the montmorillonite was about 5.19 nmin the WPU matrix.Silane coupling agent and montmorillonite had mutual improvement effect for modifying the WPU.As 1%(mass fraction) MMT and 2%(mass fraction) coupling agent were introduced,compared with those of WPU without modification,the tensile strength and the elongation at break increased by 69.7% and 17.6%,respectively,and the water absorption rate decreased by 48.7%.
- waterborne polyurethane,
- montmorillonite,
- silane coupling agent,
- emulsion
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