Preparation and Properties of Epoxy Resin Modified Waterborne Polyurethane

Biao Zhan; Qing Shan Li; Wei Hong; Yu Ze Xia; Guo Wei Wang; Guang Zhong Xing

doi:10.4028/www.scientific.net/AMM.320.607

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 320Preparation and Properties of Epoxy Resin Modified...

Preparation and Properties of Epoxy Resin Modified Waterborne Polyurethane

Abstract:

The 4,4-diphenyl methane diisocyanate (MDI), polyethylene glycol (PEG) and epoxy resin (EP-44 and EP-51) were selected to prepare series of water polyurethane modified by epoxy resin (EWPU) by using chain extender, catalyst, and neutralizer. The influence of such factors as the R (NCO/OH), the contents of DMPA and epoxy resin on the performance of emulsion and film were discussed in details. The results shows that when R was 1.7, DMPA content was 7%, epoxy resin content was 8%, the EWPU emulsion appears brilliantly and shows great stability, it was measured that the water absorption, tensile strength and breaking elongation of the film are respectively 8.41%, 15.52MPa and 318%. Moreover, the comprehensive performance of the WPU modified by E-44 is better than that modified by E-51. According to the FTIR analysis, the EP has been successfully introduced to the waterborne polyurethane molecular chain.

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Periodical:

Applied Mechanics and Materials (Volume 320)

Pages:

607-610

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.320.607

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Online since:

May 2013

Authors:

Biao Zhan, Qing Shan Li, Wei Hong, Yu Ze Xia, Guo Wei Wang, Guang Zhong Xing

Keywords:

Emulsion Property, Epoxy Resin (ER), Tensile Strength, Water Resistance, Water-Borne Polyurethane

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