| 聚氨酯/环氧梯度互穿网络聚合物的弯曲行为 |
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| 引用本文： | 穆中国,王源升.聚氨酯/环氧梯度互穿网络聚合物的弯曲行为[J].高分子材料科学与工程,2007,23(4):125-127,131. |
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| 作者姓名： | 穆中国 王源升 |
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| 作者单位： | 1. 海军工程大学基础部,湖北,武汉,430033
2. 海军工程大学训练部,湖北,武汉,430033 |
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| 摘 要： | 设计了一种新的梯度组分分布数学模型,采用梯度因子和梯度层数控制梯度组分的分布,并用逐层浇铸的方法制备了不同种类的EP/PU梯度互穿网络聚合物(IPNs)材料,对其弯曲行为进行了研究。研究结果表明,在相同质量比情况下,梯度IPNs的弯曲性能低于普通IPNs,并且梯度层数越多,梯度因子越大,弯曲性能越低,越容易发生弯曲变形。尽管弯曲性能有所降低,梯度IPNs的抗冲击性能要优于普通IPNs。
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| 关 键 词： | 环氧 聚氨酯 互穿聚合物网络 梯度互穿聚合物网络 弯曲行为 |
| 文章编号： | 1000-7555（2007）04-0125-03 |
| 修稿时间： | 2006-04-182006-09-04 |
Preparation and Flexural Behavior Study of PU/EP Graded Interpenetrating Ploymer Networks (IPNs) |
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| MU Zhong-guo,WANG Yuan-sheng.Preparation and Flexural Behavior Study of PU/EP Graded Interpenetrating Ploymer Networks (IPNs)[J].Polymer Materials Science & Engineering,2007,23(4):125-127,131. |
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| Authors: | MU Zhong-guo WANG Yuan-sheng |
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| Affiliation: | 1. Department of Basic Courses, Naval University of Egineering; 2. Administrative Office of Training, Naval University of Engineering, Wuhan 430033, China |
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| Abstract: | A new mathematic model was adopted to design the distribution of graded component in graded IPNs,Both graded layers number and graded factor were used to control the distribution of graded component.Different types of PU/EP graded IPNs were prepared by means of casting layer by layer,The flexural behavior of the materials was studied and compared with that of ordinary IPNs.Our results indicate that when mass ratio is the same,The flexural property of graded IPNs is lower than that of ordinary IPNs and decrease with increase of number of graded layers and graded factor.Decrease of the flexural property makes graded layers distort easily.Although the flexural property of graded IPNs is lower.Its impact strength is higher than that of ordinary IPNs. |
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| Keywords: | epoxy resin polyurethane IPNs graded IPNs flexural property |
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