涤纶织物/聚氯乙烯-中空微珠复合材料的制备及其隔声性能

为制备新型轻质隔声复合材料,以聚氯乙烯(PVC)为基体材料,中空微珠(HGM)为基体的填充材料,柠檬酸三丁酯为增塑剂,涤纶织物为增强材料,自制二氧化硅/柠檬酸三丁酯上浆剂为界面优化剂,采用接触成型技术制备了涤纶织物/PVC-HGM复合材料,并利用双声道声学测试仪对复合材料的隔声性能进行测试。结果表明:相同厚度的涤纶织物/PVC-HGM复合材料试样,随着HGM体积分数的增加,复合材料的面密度呈线性下降;HGM体积分数的增加不能显著提高涤纶织物/PVC-HGM复合材料的隔声性能;随着HGM粒径的增大,HGM体积分数相同的涤纶织物/PVC-HGM复合材料的隔声性能明显提高。

Preparation and sound insulation performance of polyester fabric/polyvinyl chloride-hollow glass microspheres composites

In order to prepare a light sound insulation composite, polyester fabric/polyvinyl chloride (PVC)-hollow glass microspheres (HGM) composites were prepared by contact molding technology with polyvinyl chloride as matrix materials, hollow microspheres as matrix filling materials, tributyl citrate as plasticizers, polyester fabric as reinforcement materials, and self-made silica/tributyl citrate sizing agent as interface optimization agents. The sound insulation performance of the composites was tested by using a double-channel acoustic tester. The results show that the mass of the composites decreases linearly with the increase of HGM volume fraction for the same thickness of polyester/PVC-HGM composites. The increase of HGM volume fraction did not significantly improve the sound insulation performance of polyester fabric/PVC-HGM composite.With the increase of HGM particle size, the sound insulation performance of polyester fabric/PVC-HGM composites with the same volume fraction of HGM was significantly improved.