| 粘土/NBR纳米复合材料的结构与性能研究 |
| Study on structure and properties of clay /NBR nano-composite |
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| DOI： |
| 中文关键词: 粘土 NBR 纳米复合材料 耐老化性能 气密性能 阻燃性能 |
| 英文关键词: clay NBR nano-composite aging property air-tightness flame retardance |
| 基金项目:北京市科技新星计划项目(H010410010112)；国家自然科学基金资助项目(05173003) |
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| 中文摘要: |
| 采用共絮凝粘土水悬浮液与NBR胶乳共混的方法制备了粘土/NBR纳米复合材料。透射电子显微镜观察表明粘土具有平面取向的纳米分散结构；X光衍射测试表明复合材料中还存在一定量的粘土片层聚集体；随着粘土用量的增大，复合材料的邵尔A型硬度、100%定伸应力、300%定伸应力、拉伸强度和扯断永久变形增大，扯断伸长率变化不大；粘土/NBR纳米复合材料的耐老化性能略优于白炭黑/NBR硫化胶；粘土可提高复合材料的气体阻隔性能，但对复合材料的氧指数影响不大。 |
| 英文摘要: |
| A clay/NBR nano-composite was prepared by blending co-flocculated clay suspension in water with NBR latex.It was found by TEM and X-ray diffraction that the clay possessed nano-dispersion structure orientated in plane and there were some laminal clay aggregates in the composite.The properties of clay/NBR nano-composite were investigated.The test results showed that as the proportion of clay increased，the ShoreA hardness，modulus at 100% elongation，modulus at 300% elongation，tensile strength and tensile permanent set of the composite increased and the elongation at break changed little；the aging property of clay/NBR composite was somewhat superior to that of silica/NBR compound；and the clay improved the air-tightness of composite，but showed little effect on the oxygen index of composite. |
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