摘要
以六氯环三磷腈(HCCP)为原料合成了一种六官能度环氧树脂——六(4-缩水甘油氧基甲基苯氧基)环三磷腈(HGPCP),采用红外光谱、核磁共振氢谱和磷谱对其进行了结构表征和确认。选择4,4′-二氨基二苯甲烷(DDM)和4,4′-二氨基二苯砜(DDS)作为固化剂,采用非等温差示扫描量热法对HGPCP的热固化动力学进行了研究。研究表明,HGPCP/DDM和HGPCP/DDS固化体系的表观活化能分别为52.46 kJ/mol和61.77 kJ/mol,相比于通过Kissinger法、Crane法建立的n级动力学模型,DDM和DDS对HGPCP的固化反应更符合Eestak-Berggren双参数自催化模型。此外,结合不同升温速率的特征温度,对DDM、DDS固化HGPCP的工艺条件进行了优化。
A novel hexa-functional epoxy resin hexa-[4-(glycidyloxymethyl)phenoxy]-cyclotriphosphazene,HGPCP,was synthesized from hexachlorocyclotriphosphazene(HCCP)in four steps,the chemical structure of HGPCP was characterized by FT-IR,1H,and 31P-NMR spectroscopy.4,4-Diaminodiphenyl methane(DDM),4,4‘-diaminodiphenyl sulfone(DDS)were selected as curing agents,the thermal curing kinetics of HGPCP was studied by non-isothermal differential scanning calorimetry(DSC).The results show that the apparent activation energies of HGPCP/DDM and HGPCP/DDS are 52.46 kJ/mol,61.77 kJ/mol,respectively.Comparing to n order model deduced from Kissinger and Crane method,the curing process of HGPCP/DDM and HGPCP/DDS can be well described by Eestak-Berggren two-parameter autocatalytic model.Furthermore,the curing condition of HGPCP cured by DDM,DDS was optimized according to the characteristic temperature at different heating rates.
作者
周立生
张广成
杨士山
杨立波
曹继平
杨科武
Lisheng Zhou;Guangcheng Zhang;Shishan Yang;Libo Yang;Jiping Cao;Kewu Yang(Xi'an Modern Chemistry Research Institute,Xi'an 710065,China;School of Natural and Applied Sciences,Northwestern Polytechnical University,Xi'an 710129,China;College of Chemistry and Materials Science,Northwestern University,Xi'an 710069,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2020年第5期107-116,共10页
Polymer Materials Science & Engineering
关键词
环磷腈
多官能度环氧树脂
固化动力学
cyclotriphosphazene
multifunctional epoxy resin
curing kinetics
