可溶性PPESK/氰酸酯树脂体系的制备与性能  

Preparation and Characterization of PPESK/Cyanate Blends

作　　者：李俊燕[1,2] 陈平[1,3] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116024 [2]渭南师范学院化学与生命科学学院,陕西渭南714000 [3]沈阳航空航天大学先进聚合物基复合材料制备技术辽宁省重点实验室,辽宁沈阳110136

出　　处：《高分子材料科学与工程》2013年第2期149-151,共3页Polymer Materials Science & Engineering

基　　金：辽宁省高等学校优秀人才支持计划项目(RC-05-14);渭南师范学院研究生专项项目(12YKZ041)

摘　　要：采用热熔法制备了含氮杂萘聚醚砜酮(PPESK)/氰酸酯共混树脂体系。利用断裂韧性和弯曲实验考察了PPESK分子量对共混体系力学性能的影响规律,发现共混体系的临界应力强度因子(KIC)为1.00 MPa.m1/2～1.25 MPa.m1/2,弯曲强度和弯曲模量分别为140 MPa～148 MPa和3.26 GPa～3.30 GPa。使用热变形测试和热失重分析法(TGA)研究了体系的耐热性,共混体系的热变形温度约为266℃,在N2气氛中5%热失重温度为415℃～428℃。对PPESK/氰酸酯树脂体系的介电性能测试结果表明,共混体系的介电常数和介电损耗角正切分别为3～3.2和0.006～0.007。The poly （phthalazine ether sulfone ketone） （PPESK）/cyanate resin blends were prepared by the melt-mixing method. The influence of PPE3K molecular weight on the mechanical properties of the blends was investigated by the fracture toughness and the flexural testing. The critical stress intensity factor Klc of the blends is 1.00 MPa＇m1/2- 1.25 MPa·m1/2, while the flexural strength and flexural modulus are 140 MPa- 148 MPa and 3.26 GPa-- 3.30 GPa respectively. The heat-resistant properties of the blends were studied by the heat distortion test and thermogravimetric analysis （TGA）. The heat distortion temperature and the temperature at 5 % mass loss are 266 ℃ and 415℃ --428 12, respectively. Finally, the results of the dielectric properties indicate that the dielectric constant and tan3 are 3--3.2 and 0.006--0.007, resin, ctively .

关 键 词：含氮杂萘聚醚砜酮 氰酸酯 韧性 热性能 介电性能 

分 类 号：TQ322.41[化学工程—合成树脂塑料工业]