摘要
采用热重-红外(TGA-FTIR)联用技术研究液晶聚合物(LCP)的热分解行为,研究不同升温速率(10、20、30、40、50℃/min)对LCP热稳定性的影响,同时对LCP的逸出气体组成进行分析。结果表明:LCP受热分解过程主要为一个失重阶段,LCP组分受热后,分子链断裂,降解成三聚体、二聚体、单体等化合物,有些化合物裂解成烃类物质生成CO2逸出。升温速率对LCP热分解过程的影响主要表现在最大失重速率温度(T_m)和最大失重速率(D_m)上,随着升温速率的增加,D_m增加,T_m升高。
Thermal degradation behavior of liquid crystalline polymer（LCP） were studied by TGA-FTIR. The effect of different heating rate（10,20,30,40,50℃/min） and the evolved gas were investigated. The results show that one stages of weight loss appeared on the thermal degradation of LCP. The thermal decomposition process of LCP is mainly a weight loss stage. After the LCP component is heated, the molecular chain breaks and degrades into trimer, dimer, monomer and other compounds, some compounds break down into hydrocarbons to form CO_2 escape. The influence of heating rate on the thermal decomposition process of LCP is mainly manifested in the maximum weight loss rate temperature（T_m） and the maximum weight loss rate（D_m）. With the increase of heating rate, the D_m and T_m increase.
出处
《塑料科技》
CAS
北大核心
2017年第12期104-106,共3页
Plastics Science and Technology
基金
国家质检总局科技计划项目(2013QK288)
