The Effect of Glycidyl Azide Polymer Grafted Tetrafunctional Isocyanate on Polytriazole Polyethylene Oxide-Tetrahydrofuran Elastomer and its Propellant Properties

Jinghui Hu; Weiqiang Tang; Yonghui Li; Jiyu He; Xiaoyan Guo; Rongjie Yang

doi:10.3390/polym12020278

The Effect of Glycidyl Azide Polymer Grafted Tetrafunctional Isocyanate on Polytriazole Polyethylene Oxide-Tetrahydrofuran Elastomer and its Propellant Properties

Polymers (Basel). 2020 Jan 31;12(2):278. doi: 10.3390/polym12020278.

Authors

Jinghui Hu¹, Weiqiang Tang¹, Yonghui Li¹, Jiyu He¹, Xiaoyan Guo¹, Rongjie Yang¹

Affiliation

¹ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

Abstract

A new energetic curing reagent, Glycidyl azide polymer grafted tetrafunctional isocyanate (N100-g-GAP) was synthesized and characterized by FT-IR and GPC approaches. Polytriazole polyethylene oxide-tetrahydrofuran (PTPET) elastomer was prepared by N100-g-GAP and alkynyl terminated polyethylene oxide-tetrahydrofuran (ATPET). The resulting PTPET elastomer was fully characterized by TGA, DMA, FTIR and mechanical test. The above analysis indicates that PTPET elastomers using N100-g-GAP as curing reagent have the potential for use in propellants. The overall formulation test of the composite propellants shows that this curing system can effectively enhance mechanical strength and bring a significant improvement in the interface interaction between the RDX & AP particles and binder matrix.

Keywords: bonding; curing reagent; polytriazole polyethylene oxide-tetrahydrofuran (PTPET); propellants.