固体火箭技术2016，Vol.39Issue(4)：492-496,5.DOI:10.7673/j.issn.1006-2793.2016.04.008
GAP-PCL含能热塑性弹性体的合成及力学性能
Synthesis and mechanical properties of energetic thermoplastic elastomers based on glycidyl azide polymer and polycaprolactone
胡义文 1邓敏 1周伟良 1肖乐勤 1菅晓霞1
作者信息
- 1. 南京理工大学 化工学院，南京 210094
- 折叠
摘要
Abstract
To improve the mechanical performance of energetic thermoplastic elastomers( ETPEs) based on GAP,a series of glycidyl azide polymer(GAP)/polycaprolactone(PCL) copolyol based energetic thermoplastic elastomers(ETPEs) were synthesized by solution copolymerization using diethylene glycol(DEG) as chain extender.The synthesized ETPEs structure were characterized by fourier transform infrared spectroscopy( FTIR) ,and their mechanical properties were measured by universal testing machine and dynamic mechanical analysis(DMA).The effects of the molar ratio of—NCO/—OH(R),the amount of chain extender,types of iso⁃cyanates,and GAP/PCL mass ratio in soft segment on GAP/PCL ETPEs were investigated by measuring their mechanical proper⁃ties.The results reveal that the synthesized ETPEs have typical features of azido⁃typed polyether⁃based polyurethane.When R is 1.15 and the —OH offered by DEG accounts for 40% of total—OH involved in the reaction,the ETPEs exhibit good mechanical proper⁃ties,and their tensile strength reaches 13.50 MPa while elongation at break also attains 1 654%.Moreover,the mechanical properties improve strongly as the PCL increase in soft segment.The introduction of PCL with good flexibility can reduce the storage modulus of ETPEs,and the glass transition temperature( Tg ) reaches -30.4 ℃.关键词
GAP/含能热塑性弹性体/力学性能Key words
GAP/energetic thermoplastic elastomer/mechanical propertiy分类
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胡义文,邓敏,周伟良,肖乐勤,菅晓霞..GAP-PCL含能热塑性弹性体的合成及力学性能[J].固体火箭技术,2016,39(4):492-496,5.
