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首页> 外文期刊>Journal of Applied Polymer Science >Network regulation and properties optimization of glycidyl azide polymer-based materials as a candidate of solid propellant binder via alternating the functionality of propargyl-terminated polyether
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Network regulation and properties optimization of glycidyl azide polymer-based materials as a candidate of solid propellant binder via alternating the functionality of propargyl-terminated polyether

机译：通过交替丙基封端的聚醚的官能团作为固体推进剂粘合剂候选物的甘氨酸叠亚齐甲醚基材料的网络调节与性能优化

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摘要

A kind of glycidyl azide polymer (GAP)-based composite has been fabricated using propargyl-terminated ethylene oxide-tetrahydrofuran copolymer (PPET) with two (p-) and three (t-) alkyne functionalities via Huisgen reaction. Independent upon the PPET functionality, both crosslink densities and mechanical properties for two GAP/PPET systems showed a positive-interrelation changes of initial increase and subsequent decrease with an increase of azide/alkyne molar ratios. At equivalent of azide/alkyne molar ratios, the composites containing t-PPET with higher alkyne functionality exhibited better mechanical properties, while those with two alkyne functionality presented lower glass transition. Under the regulation of alkyne functionality as 3 and azide/alkyne molar ratio as 3:1, the tensile strength, Young's modulus and breaking elongation could simultaneously reach the maximum values of 1.38 MPa, 4.07 MPa, and 122.5%, which was ascribed to optimal participation of azide/alkyne reaction into network construction. Overall, this study provides an additional optimization route for network-structured binders in solid propellant system. (c) 2019 Wiley Periodicals, Inc.
机译：使用丙基封端的乙烯氧化物 - 四氢呋喃共聚物（PPET）通过Huisgen反应使用两种（P-）和三（T-）炔烃功能，制造了一种基于叠糖基聚合物（间隙）的复合材料。独立于PPET功能，两个间隙/ PPET系统的交联密度和机械性能均显示出初始增加和随后随后降低随叠氮化物/炔钼摩尔比的阳性相互关系变化。在相当于叠氮甲烷/炔灭摩尔比，含有较高炔烃官能度的T-PPET的复合材料表现出更好的机械性能，而具有两种炔烃功能的那些呈较低的玻璃化转变。在炔烃官能度的调节下，如图3：1所示，拉伸强度，杨氏模量和断裂伸长率同时达到1.38MPa，4.07MPa和122.5％的最大值，归因于最佳叠氮/炔烃反应参与网络施工。总体而言，该研究为固体推进剂系统中的网络结构粘合剂提供了额外的优化路线。 （c）2019 Wiley期刊，Inc。

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