Effects of crosslinking degree and carbon nanotubes as filler on composites based on glycidyl azide polymer and propargyl‐terminated polyether for potential solid propellant application |
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| Authors: | Song Wang Changhua Liu Xiang Guo Gen Tang Lin Gan Chun Qi Jin Huang |
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| Affiliation: | 1. School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China;2. School of Chemistry and Chemical Engineering, Southwest University, Chongqing, China;3. The 42nd Institute of the Fourth Academy of China Aerospace Science and Technology Corporation (CASC), Xiangyang, China |
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| Abstract: | Triazole crosslinked polymers were prepared by reacting glycidyl azide polymer (GAP) with the propargyl ‐ terminated poly(tetramethylene oxide) (PTMP) at different molar ratios of azide versus alkyne. Based on the optimum mechanical properties of the GAP/PTMP ‐ 2.5, a series of GAP/PTMP nanocomposites reinforced by either multi ‐ walled carbon nanotubes (MWCNTs) or carboxy ‐ functionalized multiwalled carbon nanotubes (MWCNTs ‐ COOH) were prepared with different mass ratios. The glass transition temperatures (Tg, PTMP) assigned to PTMP of the GAP/PTMP composites almost kept at a constant range when the molar ratio of azide versus alkyne was from 1.0 to 2.5. When the loading MWCNTs was 1.0 wt %, the tensile strength and elongation at break achieved a maximum of 1.77 MPa and 36.3%, respectively. The nanocomposites with nearly similar Tg, PTMP indicated no phase separation in the crosslinked polymers. The results revealed that the improved properties of GAP ‐ based materials could be achieved by changing the molar ratio of azide versus alkyne and the nanofillers content. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 45359. |
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| Keywords: | composites crosslinking mechanical properties structure– property relationships |
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