室内木制品用空心刨花板吸声性能的研究

采用驻波法测试了挤压法生产的空心刨花板与平压法生产的实心刨花板在不同试验条件下的吸声系数,并探讨了材料结构、孔隙率、表面处理等因素对吸声性能的影响。结果表明:挤压法生产的空心刨花板比平压法生产的实心刨花板吸声性能好。挤压法生产的空心刨花板的平均降噪系数为0.30,是平压法生产的实心刨花板的2倍,其平均吸声系数大于0.2,是理想的吸声材料。空心刨花板孔道的吸声系数纵向排列时要比横向排列时高。采用表面砂光方法对提高两种板材的吸声系数都有一定的效果,其中平压法生产的实心刨花板更明显。

Study on sound absorption performance of extruded tubular particleboard used in indoor wooden products

The coefficient of sound absorption of pressed solid particleboard and extruded tubular particleboard was measured by standing wave tube method under different conditions.The effects of material structure,porosity ratio and surface treatment on the sound absorption property were evaluated.The results showed that the sound absorption property of the extruded tubular particleboard was better than that of pressed solid particleboard.The average coefficient of noise reduction was 0.30 in extruded tubular particleboard,which was higher than that in solid particleboard.The average coefficient of sound absorption of extruded tubular particleboard was above 0.2,which proved that the extruded tubular particleboard could be used as a suitable sound absorption material.Moreover,when the holes in tubular particleboard were arranged in vertical direction,the coefficient of sound absorption was higher than that arranged in horizontal direction.The sanding was a useful method to improve the sound absorption property of these particleboards,especially for pressed solid particleboard.