Using bamboo particle board as a wall divider, a furniture component, or an automotive component with a sound absorber function may be a viable option for architects and engineers seeking to achieve desired acoustical qualities, including noise reduction. However, there is still a dearth of research on the effect of particle board finishing and coatings on acoustical sound absorption and noise reduction qualities. This study, therefore, aims to determine the surface characteristics and acoustical properties of bamboo particle board, coated with polyurethane (PU). The single-layer homogeneous particle boards were constructed using particles classified as fine and coarse with two different board densities, and coated with a high-quality PU lacquer. This study found that the coating treatment of 0.3 mm 0.6 mm succeeded to significantly decrease surface roughness, as well as thickness, swelling, and water absorption, with the thickness coating as a dominant factor compared with board density and board particle size. Adding a PU coating increases sound absorption performance at low frequencies, but significantly reduces acoustical properties at high frequencies. The increase of particle board density leads to the decrease in noise reduction coefficient capability. Results obtained from this study are useful to determine the optimal coating thickness in terms of evaluating acoustical panel products.

中文翻译：

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涂聚氨酯清漆的竹刨花板的表面特性及声学性能

使用竹刨花板作为隔墙、家具部件或具有吸音功能的汽车部件，对于寻求实现所需声学质量（包括降噪）的建筑师和工程师来说，可能是一个可行的选择。然而，关于刨花板饰面和涂料对声学吸声和降噪质量的影响仍然缺乏研究。因此，本研究旨在确定涂有聚氨酯 (PU) 的竹刨花板的表面特性和声学特性。单层均质刨花板由具有两种不同板密度的细粒和粗粒构成，并涂有高质量的 PU 漆。本研究发现，0.3 mm 0 的涂层处理。6 毫米成功地显着降低了表面粗糙度，以及厚度、膨胀和吸水率，与板密度和板粒度相比，涂层厚度是主要因素。添加 PU 涂层可提高低频的吸音性能，但会显着降低高频的声学性能。刨花板密度的增加导致降噪系数能力下降。从这项研究中获得的结果有助于确定评估吸音板产品的最佳涂层厚度。但显着降低了高频声学特性。刨花板密度的增加导致降噪系数能力下降。从这项研究中获得的结果有助于确定评估吸音板产品的最佳涂层厚度。但显着降低了高频声学特性。刨花板密度的增加导致降噪系数能力下降。从这项研究中获得的结果有助于确定评估吸音板产品的最佳涂层厚度。