| 湿热老化对氰酸酯树脂/酚醛环氧树脂共混物结构与性能的影响 |
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| 引用本文： | 郭宝春,傅伟文,贾德民,汪磊,邱清华. 湿热老化对氰酸酯树脂/酚醛环氧树脂共混物结构与性能的影响[J]. 复合材料学报, 2002, 19(3): 6-9 |
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| 作者姓名： | 郭宝春 傅伟文 贾德民 汪磊 邱清华 |
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| 作者单位： | 华南理工大学,材料科学与工程学院,广州,510640 |
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| 基金项目： | 广东省自然科学基金项目 (0 0 0 5 11) |
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| 摘 要： | 制备了不同摩尔比的双酚A二氰酸酯/酚醛环氧树脂共混物,测定了共混物和纯氰酸酯聚合物的吸湿曲线,用DMA和FTIR研究了湿热老化前后共混物结构与性能的变化。结果表明,氰酸酯基摩尔分数大于0.5的共混物具有明显比聚氰脲酸酯更低的平衡吸湿。老化后共混物的玻璃化转变温度保持率随氰酸酯含量的增加而降低。老化后聚氰脲酸酯的FTIR谱出现了降解产物的吸收峰,而共混物没有出现明显的结构变化。
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| 关 键 词： | 双酚A二氰酸酯 酚醛环氧 共混物 湿热老化 吸湿性能 |
| 文章编号： | 1000-3851(2002)03-0006-04 |
| 收稿时间： | 2000-08-24 |
| 修稿时间： | 2000-08-24 |
EFFECTS OF HYDROTHERMAL AGEING ON STRUCTURES AND PROPERTIES OF CYANATE/EPOXY NOVOLAC BLENDS |
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| GUO Bao-chun,FU Wei-wen,JIA De-min,WANG Lei,QIU Qing-hua. EFFECTS OF HYDROTHERMAL AGEING ON STRUCTURES AND PROPERTIES OF CYANATE/EPOXY NOVOLAC BLENDS[J]. Acta Materiae Compositae Sinica, 2002, 19(3): 6-9 |
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| Authors: | GUO Bao-chun FU Wei-wen JIA De-min WANG Lei QIU Qing-hua |
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| Affiliation: | College of Material Science and Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Uncatalyzed blends of bisphenol A dicyanate ester/epoxy novolac with different molar ratios were prepared. Hydrothermal ageing for times up to one month was performed and water take up profiles of those blends were determined by a gravimetric method. It was found that the blends absorbed much less water than homopolycyanate when the molar fractions of the cyanate group in the blends were greater than 0.5. Dynamic mechanical analysis and FTIR determination were performed on virgin and aged samples. The results demonstrate that the hydrothermal ageing resistance of the blends is superior to that of homopolycyanate. |
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| Keywords: | bisphenol A dicyanate ester epoxy novolac blends hydrothermal ageing water take up |
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