蛭石/PVC复合材料的隔声性能研究

Research on Sound Insulation Property of Vermiculite/PVC Composite

将蛭石加入到聚氯乙烯(PVC)树脂中,用模压成型法制备不同配比的蛭石/PVC复合材料。利用SEM扫描电镜对材料进行微观形貌的观察;利用双声道分析仪研究蛭石对复合材料隔声性能的影响;利用动态热机械分析仪、万能材料试验机对不同配比的蛭石/PVC复合材料的阻尼性能、拉伸力学性能等进行了测试。结果表明:蛭石/PVC复合材料有良好的隔声性能,在相近面密度下,其隔声性能要优于BaSO4/PVC复合隔声材料,其隔声效果的提高主要在中高频区域。

This research adds vermiculite to PVC resin and prepares vermiculite/PVC composites of different proportions with compression molding method,observes the microstructure of materials through SEM scanning electron microscope,studies the influence of vermiculite on sound insulation property of composites through dual-track analyzer and tests the damping capacity and tensile mechanical property of vermiculite/PVC composites of different proportions through dynamic thermal mechanical analyzer and universal material testing machine.The result shows that vermiculite/PVC composite has a good sound insulation property and its sound insulation property is better than that of BaSO4/PVC composite sound insulating material at close surface density.The improvement of its sound insulation effect is mainly achieved in regions of medium-high frequency.