| 含螺环原碳酸酯的预聚物对环氧树脂的改性研究 |
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| 引用本文： | 王长松,周本濂.含螺环原碳酸酯的预聚物对环氧树脂的改性研究[J].应用化学,1998,15(4):77-79. |
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| 作者姓名： | 王长松 周本濂 |
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| 作者单位： | 中国科学院金属研究所!沈阳，110015，中国科学院金属研究所!沈阳，110015 |
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| 摘 要： | Bailey发现螺环原酸酯和螺环原碳酸酯等单体在阳离子引发剂作用下进行双开环聚合反应时，伴随着体积膨胀［‘j．这一现象引起了高分子材料学家的极大兴趣，因为树脂固化时产生体积收缩，会使树脂材料内部产生收缩应力，是导致材料力学性能下降，使用寿命降低的主要原因之一．例如，用不饱和螺环原碳酸酯改性的某种补牙材料与牙的粘接力比不含螺环原碳酸酯的大一倍，并且改善了冲击强度而不改变模量．更为重要的是，由于体积稍微膨胀，补牙材料与牙齿间无缝隙，从而消除了在缝隙中繁殖细菌的可能性，达到既结实又卫生的目的【‘］．利用螺环…
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| 关 键 词： | 环氧树脂改性 螺环原碳酸酯预聚物 粘接强度 热稳定性 |
| 收稿时间： | 1997-10-16 |
Study on Epoxy Resin with Modified Prepolymer Containing Spiro-orthocarbonate |
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| Wang Changsong, Zhou Benlian.Study on Epoxy Resin with Modified Prepolymer Containing Spiro-orthocarbonate[J].Chinese Journal of Applied Chemistry,1998,15(4):77-79. |
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| Authors: | Wang Changsong Zhou Benlian |
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| Abstract: | The epoxy resin E-51 has been modified with a new prepolymer containing spiroorthocarbonate. It is found that the addition of the prepolymer into epoxy resin system enhances the conversion of epoxy groups with the Tg and thermal stability of the matrix beingslightly reduced. The adhesive tensile and shear strengths of the modified resin increased obviousely with the increase in prepolymer content. The relationship between the shrinkageand adhesive strengths of the products also has been investigated. |
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| Keywords: | epoxy resin modification spiro-orthocarbonate prepolymer adhesive strength thermal stability |
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