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Synthesis and characterization of waterborne polyurethane adhesive from MDI and HDI
Author(s) -
Du Hui,
Zhao Yuhua,
Li Qifeng,
Wang Junwei,
Kang Maoqing,
Wang Xinkui,
Xiang Hongwei
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28805
Subject(s) - prepolymer , adipate , polyurethane , materials science , hexamethylene diisocyanate , thermal stability , adhesive , butanediol , molar ratio , polymer chemistry , composite material , chemical engineering , chemistry , organic chemistry , layer (electronics) , fermentation , engineering , catalysis
A series of waterborne polyurethane adhesives (WPUAs) were prepared from diphenylmethane‐4,4′‐diisocyanate (MDI), 1,6‐hexamethylene diisocyanate (HDI), poly(1,4‐butanediol adipate) diol (PBA), 1,4‐butanediol (BDO), and internal‐emulsifying agents by the prepolymer mixing method. The viscosity, mechanical properties, thermal properties, and adhesion strength of the samples were measured. The structure–property relationship was discussed primarily. The results indicated that the MDI/HDI and PBA/BDO molar ratio influenced these properties. The WPUA exhibited excellent T‐peel strength and mechanical properties at a suitable MDI/HDI (or PBA/BDO) molar ratio. Moreover, higher MDI/HDI (or PBA/BDO) molar ratio resulted in higher thermal stability. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008