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Preparation and properties of semi-interpenetrating networks combined by thermoplastic polyurethane and thermosetting elastomer

Abstract

Thermosetting elastomer has been introduced into hydroxyl-terminated polyether thermoplastic polyurethane systems by semi-interpenetrating technology. The novel energetic macromolecule materials are investigated by Fourier transform infrared spectroscopy (FTIR), uniaxial tensile test, dynamic mechanical analysis (DMA) and thermal gravimetric analysis (TGA), respectively. The results show that this material has good mechanical properties with stress of 9.7 MPa and strain of 1010.7 % when the mass percentage of triazole segments is 20 wt. %. It is worth noticing that the network structure parameters of semi-interpenetrating materials are quantitatively calculated for the first time based on the relationship between elastic modulus and effective crosslinking density. The damping analysis results present that the linear polyurethane domains are tightly embedded into the tridimensional network of triazole domains. In addition, it is confirmed from thermal stability and energy analysis that the samples exhibit good thermal stability and positive heat of formation. Therefore, the novel energetic materials are of potential applied value in the area of aerospace industry and missile technology.

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Publication details

The article was received on 08 Oct 2017, accepted on 05 Jan 2018 and first published on 08 Jan 2018


Article type: Paper
DOI: 10.1039/C7NJ03841K
Citation: New J. Chem., 2018, Accepted Manuscript
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    Preparation and properties of semi-interpenetrating networks combined by thermoplastic polyurethane and thermosetting elastomer

    Y. Li, G. Li, J. Li and Y. Luo, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ03841K

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