【摘要】 制备不同目数的木粉、不同木粉含量、不同偶联剂含量以及不同硫酸钡含量的木塑复合材料,对材料的隔声性能进行研究。测试复合材料进行隔声性能、结构形态的SEM等,结果表明:在相近面密度条件下,木粉的目数和木粉含量的变化主要对木塑复合材料高于1 250Hz频区的隔声量产生影响;偶联剂的加入在整个频段内对材料的隔声量影响都不大;加入硫酸钡可在保证材料隔声性能的同时降低材料的厚度。与面密度相近的使用相同基础配方制备的PVC塑料板材相比,木塑复合材料在高于2 000Hz频段表现出了更好的隔声性能。更多还原

【Abstract】 Wood-plastic composites were prepared with different quantity of wood flour,different wood flour content,different coupling agent content and different content of barium sulfate to research sound insulation property of wood-plastic composites.SEM test was done for sound insulation property and structural morphology of composites.The result shows that:under the similar surface density,changes in the quantity of wood flour and wood flour content mainly influence sound reduction index of wood-plastic composite in the high-frequency region(over 1 250 Hz);the coupling agent has little influence on sound reduction index of wood-plastic composite in the whole frequency band;the addition of barium sulfate can reduce the thickness of the composite while ensuring the sound insulation property of composites.Compared with PVC plastic plate under the similar surface density,the wood-plastic composite shows better sound insulation property in the frequency band over 2 000 Hz.更多还原