南京大学学报(自然科学版) ›› 2019, Vol. 55 ›› Issue (5): 832839.doi: 10.13232/j.cnki.jnju.2019.05.017
Xun Zhang,Wanling Shi,Zhuxuan Zhao,Cong Zhu,Weizhi Li,Xudong Jia()
摘要:
以生物质原料双酚酸甲酯(MDP)和双酚A(BA)为酚源,以聚醚胺D230为胺源与多聚甲醛经Mannich反应制得不同比例BA与MDP的苯并噁嗪前驱体.利用核磁共振(1H NMR)和红外光谱(FTIR)对苯并噁嗪前驱体的化学结构进行了表征,结果表明制备得到的产物与所设计的结构相符.利用差示扫描量热法(Differential Scanning Calorimeter,DSC)对得到产物的热性能进行表征,结果表明所得前驱体的固化起始温度(Tonset)为208.0~225.9 ℃,固化峰值温度(T peak)为240.0~246.6 ℃,与石油基纯BA制备得到的前驱体样品比较,两者固化温度相当.通过热重分析(Thermogravimetric Analysis,TGA)和拉伸试验对聚苯并噁嗪的力学性能进行了测试,结果表明,制得的聚苯并噁嗪具有较好的热稳定性和力学性能,得到的产物中MDP所占比例最高的聚苯并噁嗪PBA/MDP010?D230具有最佳综合性能.热重分析结果表明,PBA/MDP010?D230在氮气氛围下的5%热失重温度和10%热失重温度分别为356.3 ℃和373.0 ℃,且其在氮气氛围中800 ℃下的残炭率可达38.3%.PBA/MDP010?D230的力学性能测试显示其拉伸强度高达68.9 MPa,同时具有6.6%的断裂伸长率,这一结果表明了其具有较好的力学性能.
中图分类号:
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