聚乙烯/蒙脱土纳米复合材料光缆护套的研究

The Study of PE/MMT Nanocomposite for Optical Cable Sheath

报道了一种新型光缆护套料———聚乙烯/蒙脱土(PE/MMT)纳米复合材料。在双螺杆挤出机上采用熔融插层法制备了PE/MMT纳米复合材料。用X射线衍射(XRD)测试了MMT片层间距的变化,测试结果表明形成了插层型的纳米复合材料。用差热分析(DTA)测试了复合材料的熔融温度,当MMT含量为3%时,熔融温度比纯PE增加了4.5℃。力学性能测试也表明,复合材料的抗拉强度和断裂伸长率等性能与传统的PE相比有明显提高。分析了不同反应温度和螺杆转速对制备的复合材料性能的影响。最终找出了制备PE/MMT纳米复合材料的最佳反应条件。

A novel material--polyethylene/montmorillonite （PE/MMT） nanocomposite for optical cable sheath was presented. PE/MMT nanocomposites were fabricated using melted intercalation by a double screw extruder. The change of MMT layer spacing was detected by X-ray diffraction （XRD）, and it is proved that intercalated nanocomposities were made. Melted temperature of the composites was detected by differential thermal analysis （DTA） ,it increased 4.5℃ when MMT content was 3%. Mechanical properties measurement also showed that the composites＇ strength of tensile and elongation ratio enhanced significantly compared with traditional PE. The impact of different reaction temperature and rotate rates on the properties of the nanocomposites were analyzed. The perfect reaction conditions were found out to manufacture the PE/MMT nanocomposities at last.