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Physical Properties of Crosslinked Polyurethane by Tsai, Yu-Min; Yu, Tzyy-Lung; Tseng, Yu-Hsien is a Materials Science article available to read on EtoBox.

What is Physical Properties of Crosslinked Polyurethane about?

Polyester based polyurethanes were synthesized from low molecular weight polyester 2000) and 4,4@-methylene bis(phenyl isocyanate) (MDI) with (M n butanediol as a chain extender and glycerol as a crosslinker. The polyester was synthesized from adipic acid and glycol which was a mixture of 1,6-hexanediol and 1,2-propanediol. The e †ect of the crosslinker content on the degree of H-bond formation in the hard segments and the physical properties of polyurethanes were studied by di †erential scanning calorimetry (DSC), thermal mechanical analysis (TMA), Fourier transform infrared spectroscopy (FTIR) and mechanical testing. The experimental results revealed that incorporation of a triol crosslinker into the hard segments of polyurethane results in a decrease of hard segment H-bond formation. The mechanical data indicate that the mechanical properties of polyurethanes depend on the concentrations of physical and chemical crosslinks and that there is an optimum concentration of triol crosslinker for the tensile stress and elongation properties.

Who reads Physical Properties of Crosslinked Polyurethane?

Author

Tsai, Yu-Min; Yu, Tzyy-Lung; Tseng, Yu-Hsien

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0959-8103)

Published

1998

Language

EN

Field

Materials Science (Physical Sciences)