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| 热塑性聚氨酯纳米粘土复合泡沫结构与性能的研究 |
| Study of Microstructure and Properties of Thermal Polyurethane Nanocomposite Foams |
| Received:September 16, 2015 Revised:January 10, 2016 |
| DOI：10.3969/j.issn.1674-6457.2016.01.008 |
| 中文关键词: 微发泡 热塑性聚氨酯 微发泡注塑成型 纳米粘土复合泡沫 |
| 英文关键词: microcellular structure thermal polyurethane foam nanoclay MuCell injection moldi |
| 基金项目: |
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| 中文摘要: |
| 要研究了纳米粘土含量对热塑性聚氨酯 （TPU） 复合泡沫的结构与性能的影响。通过扫描电镜 （SEM） 观察TPU泡沫的微孔结构发现： 随着纳米粘土含量的增加， 微孔的直径显著减小且数量明显增加。拉伸测试发现纳米粘土含量增加到5%(质量分数)时， TPU复合泡沫的力学性能增加了56.3%， 而复合泡沫的密度却减小了12.5%。研究认为可以通过改变纳米填料的含量， 来调节聚合物复合泡沫的微观结构和机械性能， 这对微孔聚合物泡沫的工业生产有着重要的指导意义。 |
| 英文摘要: |
| The microstructure and mechanical properties of thermoplastic polyurethane（TPU）with organic modified clay nano?composite foams were studied by scanning electron microscopy（SEM）and mechanical tests. The cell diameters of the TPU/clay foams became smaller，and the cell numbers significantly increased as the clay content increased. The relationship between clay content and the mechanical properties of TPU/clay foams was also investigated. The results showed that the mass density of nanocomposite foams was lowered by 12.5 wt% when the clay loading level was 5 wt% in the nanocomposite foams. Meanwhile， the tensile strength at 300% strain of the nanocomposite foams with 5 wt% clay increased by 56.3% compared to pure TPU. This study shows that light weight，high strength TPU/clay nanocomposite foams can be produced by loading a moderate amount of clay into the TPU matrix. |
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