环氧树脂
极限氧指数
热重分析
热稳定性
差示扫描量热法
材料科学
苯酚
环氧化物
玻璃化转变
甲醛
高分子化学
核化学
化学
有机化学
聚合物
复合材料
催化作用
烧焦
物理
热力学
热解
作者
Ching‐Hsuan Lin,Chun‐Shan Wang
出处
期刊:Polymer
[Elsevier]
日期:2001-03-01
卷期号:42 (5): 1869-1878
被引量:170
标识
DOI:10.1016/s0032-3861(00)00447-x
摘要
Two series of novel multifunctional phosphorus-containing epoxy resins (phosphorus content 2 and 4%) were synthesized from the addition reaction of 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) and the glycidyl ether of cresol formaldehyde novolac (functionality=12, C12 and then cured with 4,4′-diaminodiphenyl sulfone (DDS), phenol novolac (PN) or dicyandiamide (DICY). The addition reaction was monitored by high performance liquid chromatography (HPLC) and epoxide equivalent weight (EEW) titration. The proposed structure was confirmed by FTIR and NMR spectra. Thermal properties of cured epoxy resins were studied using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and thermal gravimetric analysis (TGA). The flame-retardancy of cured epoxy resins was tested by UL-94 vertical test and limiting oxygen index (LOI). These cured epoxy resins exhibited high glass transition and high thermal stability and achieved UL-94 vertical tests of V-0 grade (nonflammable).
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