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Effect of Catalysts on the Properties of Fluorinated Polyurethanes

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Abstract:

Fluorinated polyurethanes (FPU) was prepared using fluorinated polyether polyol (FPO) as the soft segment, 4,4`-diphenylmethane diisocyanate (MDI) as the hard segment, 1,4-butanodiol (BDO) as the chain extender and catalysts. Tin metal catalysts were used to catalyze the polyurethane reaction of polyether polyols and isocyanate. The effect of different catalysts including stannous octoate (T-9) and dibutyltindalautrate (DBTDL) on the structure, surface properties and thermal properties of FPU was studied. The structural elucidation of the synthesized FPU was performed by Fourier transform infrared (FT-IR) and discovered that with decreasing catalyst efficiency or without catalyst, the strength of hydrogen bounds were enhanced. The FPU films surface was characterized by contact angle (CA) and atomic force microscopy (AFM) and it was found that the phase separation was increasing with increasing catalyst efficiency. The thermal property was exhibited by Thermo gravimetric (TG) and showed that joining catalyst improved stability significantly.

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Periodical:

Applied Mechanics and Materials (Volume 464)

Pages:

9-13

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.464.9

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Online since:

November 2013

Authors:

Zan Li, Xia Wang*, Ying Li, Wei Chain, Jiao Jiao Hu

Keywords:

Different Catalysts, FPU, Property

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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