摘要
以2-(二苯基膦酰)-1,4-苯二酚(DPO-HQ)和苯基磷酸二氯酯(MPCP)为原料,合成新型磷系阻燃剂聚苯氧基膦酸(2-(二苯基膦酰)-1,4-苯二酚)酯(PDPMP),FTIR、1 H-NMR、31 P-NMR表征确定了该化合物的分子结构。然后以PDPMP为阻燃剂制备了阻燃PET(FR-PET),极限氧指数(LOI)法考察其阻燃性能;动态热重分析(TGA)研究PET及FR-PET的热稳定性能,选取Flynn-Wall-Ozawa(FWO)和Starink两种动力学方法研究其热降解动力学。结果发现:含磷阻燃剂的加入提高了PET的阻燃性能;初始降解温度提前,FR-PET的活化能低于纯PET;但后期降解阶段活化能增幅明显高于纯PET样品,阻燃剂先于PET分解,生成耐热性较好的炭层,提高了聚酯的热稳定性。
A Novel phosphorus-containing flame retardant,polystyrene oxygen phosphonic acid（2-（diphenyl acid）-1,4-benzodiazepines）ester（PDPMP）,was synthesized by using 2-（diphenyl acid）-1,4-benzodiazepines（DPO-HQ）and phenyl phosphate dichloride ester（MPCP）as raw materials.The molecular structure of the flame retardant was characterized by FTIR,^1 H-NMR and ^31P-NMR.After that,the flame retardant PET（FR-PET）was prepared with PDPMP.The flame resistance and thermal stabilities of PET and FR-PET were studied by limit oxygen index（LOI）and dynamic thermogravimetric analysis（TGA）respectively.Meanwhile,two kinetic methods,Flynn-Wall-Ozawa（FWO）and Starink,were utilized to study their thermal degradation kinetics.The results show that the flame resistance of PET is improved by the addition of PDPMP and that the activation energy of FR-PET is lower than that of pure PET with the earlier coming of the initial degradation temperature,but is higher in the later degradation stage,which means that the flame retardant is decomposed prior to PET to generate the carbon layer with good heat resistance and improves the thermal stability of the polyester.
出处
《山东科技大学学报（自然科学版）》
CAS
2016年第2期86-93,共8页
Journal of Shandong University of Science and Technology(Natural Science)
基金
青岛开发区科技计划项目(2013-1-74)
