摘要
以亲核取代反应合成了3种酞菁单体(2,2′-二[4-(3,4-二氰基苯氧基)]丙烷(BAPh)、4,4′-二(3,4-二氰基苯氧基)联苯(BPh)、4,4′-二(3,4-二氰基苯氧基)甲烷(BFPh))和1种含有氰基的高熔点二元芳胺2,6-二(4-氨基苯氧基)苯甲腈(APBN)。通过核磁共振氢谱(1H-NMR)、傅里叶变换红外光谱(FT-IR)、示差扫描量热仪(DSC)和热重分析(TGA)对合成的化合物的化学结构,芳胺和酞菁单体的热聚合行为,不同固化时间预聚物的热性能进行了研究。结果表明,BAPh/APBN和BFPh/APBN体系分别具有宽达101℃与107℃的加工窗口。BFPh型预聚物(固化1 h)比其他2种预聚物具有更高的初始分解温度(390℃下失重5%)、高温残炭率(800℃下61.7%)和固化效率。
Three phthalonitrile monomers known as 2,2＇-bis[ 4- （ 3,4-dicyanophenoxy）phenyl ] -propane （ BAPh ）, 4,4 ＇-bis （ 3,4-dicyanophenoxy ） biphenyl （ BPh ） and 4,4 ＇-bis （ 3,4-dicyanophenoxy ） -methane （ BFPh ） were synthesized by nucleophilic substitution reaction. An aromatie diamine with high melting point containning cyano was also prepared. The product chemical structures, thermal polymerization behaviors of aromatic diamine and phthalonitrile monomers and thermal properties of prepolymers with different curing time were investigated by ^1 H-NMR, FT-IR, DSC and TGA. The results showed the processing window of BAPh/APBN and BFPh/APBN was 101℃ and 107℃ repectively. The prepolymer of BFPh curing for 1 hour had higher initial weight loss temperature（weight loss 5% at 390 ℃ ） , char yield at high temperature （61.7% at 800 ℃ ）and curing efficiency than other two prepolymers.
出处
《热固性树脂》
CAS
CSCD
北大核心
2009年第2期1-5,共5页
Thermosetting Resin
关键词
酞菁单体
芳香二胺
固化剂
加工窗口
耐热性
phthalonitrile monomer
aromatic diamine
curing agent
processing windows
heat resistance
