%0 Journal Article
%T 木塑复合材料吸声性能的研究现状
%A 朱晓冬
%A 王梦蝶
%A 黄金鑫
%A 李鹏
%A 张博
%A 文睿
%A 刘玉
%J 林业工程学报
%D 2017
%R 10.13360/j.issn.2096-1359.2017.03.002
%X 木塑复合材料作为一种新型材料,由于其独特的装饰性能已广泛应用于室内外装饰材料中,开发其声学方面性能是目前室内装饰材料的重要研究方向,具有广阔的发展前景。笔者结合多孔吸声机理与共振吸声机理特性,阐述了吸声材料在吸声结构设计及吸声性能增强等方面的研究进展,重点分析了木塑吸声材料的结构特性与吸声性能。通过归纳分析其他木质复合吸声材料研究成果,提出了在实际使用中改善与提高木塑复合材料吸声性能的几种方法(如发泡法、预留空腔法、蜂窝结构复合法、黏附装饰层法、叠加设计法等)。采用驻波管方法测试木塑吸音板在不同穿孔率与空腔深度的吸声系数,结果表明:在穿孔率为0%和3%的条件下,吸声系数随着空腔深度的增加先上升随后下降; 在穿孔率为6%和9%的条件下,吸声系数随着空腔深度的增加而增加。通过以上方法,可以最大限度地增强木塑吸音材料的全频吸声性能,为木塑复合吸声材料在室内设计中的应用提供理论基础。</br>As a new type of material, wood-plastic composite was widely used for interior and exterior decoration due to its unique decorative performance. The development of its acoustic performance is an important research area for interior decoration materials because the better acoustic performance could promote its application. Through introducing the porous sound-absorption principle and vibratory sound-absorption principle of sound-absorption materials, this paper expounded the research progress of the wood-plastic composite in the aspects of type, design of sound-absorption structure and enhancement methods of sound-absorption. The acoustic performance of the wood-plastic composite was especially analyzed. The research progresses of the structure and sound-absorption performance were presented. Under the similar conditions, the sound absorption coefficient of the wood-plastic composite was higher than that of other wooden sound-absorbing materials at the frequency from 250 Hz to 725 Hz and its sound absorption coefficient was lower than other wood sound-absorbing materials when the frequency was higher than 725 Hz. It can be concluded that the wood-plastic composite had a good sound absorption performance at the resonant frequency. To enhance the frequency sound absorption properties of wood plastic sound-absorbing materials, the practical methods for improving and enhancing the sound-absorption performance of the wood-plastic composite were introduced(e.g, the methods of foaming, reservation cavity, honeycomb composite structure, pasting the decorative layer, superimposing the design). The absorption coefficients of different perforation rates and cavity depth of PVC wood plastic panels were tested by the standing wave tube method. The results showed that the sound absorption coefficient increased firstly and then decreased with the increase of the depth of the cavity when the perforation was of 0% and 3%. The sound absorption coefficient increased with the depth of the cavity when the perforation rates were 6% and 9%. By using the above-described method, the frequency sound absorption properties of the wood plastic sound-absorbing material can be enhanced.
%K 木塑复合材料
%K 木质吸声材料
%K 声学性能
%K 空腔填充法
%K 吸声系数&lt
%K /br&gt
%K wood-plastic composite
%K wooden sound absorbing materials
%K acoustic property
%K cavity filling method
%K sound absorption coefficient
%U http://lkkf.njfu.edu.cn//oa/darticle.aspx?type=view&id=201703002