当前位置: X-MOL 学术J. Energ. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of different BPS concentration on the thermal decomposition and thermal stability properties of GAP curing
Journal of Energetic Materials ( IF 2.1 ) Pub Date : 2019-11-25 , DOI: 10.1080/07370652.2019.1679283
Le Qi 1 , Zhongliang Ma 1 , Jinchao Han 1 , Zhongliang Xiao 2
Affiliation  

ABSTRACT In order to study the optimal ratio of the degree of bis-propargyl-succinate (BPS) cures Glycidyl azide polymer (GAP), the thermal kinetics of BPS cured system was investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG), the thermal stability and mechanical properties were studied. GAP was cured by the reaction of the azide group with BPS through a 1,3-dipolar cycloaddition reaction to form a 1,2,3-triazole network. It was found that the DSC curves of the BPS cured system show an obvious exothermic peak at around 230–260°C for each sample at different heating rates. TG-DTG curves of the BPS/GAP system exhibit two major stages of mass loss for different samples at different heating rates. When the mass ratio of BPS and GAP is 0.4:1, the thermal stability and mechanical properties were optimal. Meanwhile, the activation energy and frequency factor are calculated by Kissinger and Flynn–Wall–Ozawa methods by non-isothermal thermoanalytical data, the kinetic parameters proved that 0.4 BPS sample shows high thermal stability and the parameters are significant for further research of curing system.

中文翻译:

不同BPS浓度对GAP固化热分解及热稳定性能的影响

摘要 为了研究双炔丙基琥珀酸酯 (BPS) 固化缩水甘油基叠氮化物聚合物 (GAP) 的最佳比例,采用差示扫描量热法 (DSC) 和热重分析法 (TG) 研究了 BPS 固化体系的热动力学,研究了热稳定性和机械性能。通过叠氮基团与 BPS 通过 1,3-偶极环加成反应形成 1,2,3-三唑网络来固化 GAP。发现 BPS 固化体系的 DSC 曲线在不同加热速率下每个样品在 230-260°C 附近显示出明显的放热峰。BPS/GAP 系统的 TG-DTG 曲线表现出不同样品在不同加热速率下质量损失的两个主要阶段。当BPS与GAP的质量比为0.4:1时,热稳定性和力学性能最佳。同时,
更新日期:2019-11-25
down
wechat
bug