木塑复合材料吸声性能的研究现状

发布时间：2018-01-03 19:07

本文关键词：木塑复合材料吸声性能的研究现状　出处：《林业工程学报》2017年03期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:As a new type of material, wood-plastic composites have been widely used in indoor and outdoor decoration materials due to their unique decorative properties. The development of their acoustic properties is an important research direction of indoor decoration materials. The research progress of sound absorption materials in the design of sound absorption structure and enhancement of sound absorption performance is described. The characteristics of porous sound absorption mechanism and resonance sound absorption mechanism are combined with the characteristics of sound absorption mechanism. The structural characteristics and sound absorption properties of wood-plastic sound-absorbing materials were analyzed emphatically, and the research results of other wood-based composite sound-absorbing materials were summarized and analyzed. Several methods of improving and improving the sound absorption properties of wood-plastic composites in practical use are put forward, such as foaming method, reserved cavity method, honeycomb structure composite method and adhesion decorative layer method. The standing wave tube method is used to measure the sound absorption coefficient of wood-plastic sound absorber at different perforation rate and cavity depth. The results show that the perforation rate is 0% and 3%. The sound absorption coefficient increases first and then decreases with the increase of cavity depth. When the perforation rates are 6% and 9%, the sound absorption coefficient increases with the increase of cavity depth. Through the above methods, the full frequency sound absorption performance of wood-plastic sound absorption materials can be enhanced to the maximum extent. It provides a theoretical basis for the application of wood-plastic composite sound absorption materials in interior design.
【作者单位】：东北林业大学材料科学与工程学院;
【基金】：林业科学技术推广项目([2015]11号) 教育部新世纪优秀人才支持计划(NCET-13-0711) 中央高校基本科研业务费专项资金项目(2572016EBJ1) 东北林业大学大学生创新训练项目(CL201531)
【分类号】：TB332
【正文快照】： 随着社会的发展与科技的不断进步,人们对生活、学习、工作所处环境声音的要求越来越高,噪音对人们的影响与危害越来越受到重视。目前降低噪声的主要方法是通过利用吸声或隔声材料进行控制[1]。吸声是指声波入射材料时,材料可以吸收声波,由材料表面与内部把声能转化成热能进行

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