【摘要】 常压浇注制备了不同面密度(厚度)未填充和填充有漂珠(CFA)的玻璃纤维织物/聚氯乙烯(GF/PVC)复合材料。对比研究了两种复合材料的刚柔性、阻尼性和隔声性能。结果表明,在相近面密度条件下,CFA/GF/PVC复合材料的刚度、常温以上阻尼性、平均隔声量和高低频段(100 Hz~630 Hz和1250 Hz~8000 Hz)下的隔声量较GF/PVC复合材料均有所提高。两种复合材料的刚度、隔声量均随着面密度的增加而增加,其中隔声量在低频段增速最快,中频段次之,高频段最慢。更多还原

【Abstract】 Glass fabric/polyvinyl chloride(GF/ PVC) composites filled and unfilled with cenosphere fly ash of different areal densities(thicknesses) were respectively prepared by moulding process under normal pressure.The flexural rigidity,damping property and sound insulation performance of CFA/GF/PVC and GF/PVC composites were comparatively investigated.The results show that under the close areal density,the flexural rigidity,damping property above room temperature,average sound insulation index and sound insulation index in high-low frequencies(100 Hz～630 Hz and 1250 Hz～8000 Hz) of CFA/GF/PVC composites are higher than those of GF/PVC composites.The flexural rigidity and sound insulation index of these two kinds of composites increase with the addition of areal density,the increment speed of sound insulation index of which is largest in low frequencies,second in middle frequencies and last in high frequencies.更多还原