文献类型：期刊文献

英文题名：Mechanic and Acoustic Properties of the Sound-Absorbing Material Made from Natural Fiber and Polyester

作者：Peng, Limin[1] Song, Boqi[1] Wang, Junfeng[2] Wang, Dong[1]

第一作者：彭立民

通信作者：Peng, LM[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]GuangXi Zhuang Autonomous Reg Forestry Res Inst, Nanning 530002, Peoples R China

年份：2015

卷号：2015

外文期刊名：ADVANCES IN MATERIALS SCIENCE AND ENGINEERING

收录：;EI(收录号：20153901317069);Scopus(收录号：2-s2.0-84942346059);WOS:【SCI-EXPANDED(收录号:WOS:000361659000001)】；

基金：The authors would like to thank Chinese Academy of Forestry for the financial and technical support through The State Bureau of Forestry 948 Project Introduction of international advanced forestry science and technology plan "Manufacturing technology recommendation of high performance wood based composite sound absorbing materials" (2013-4-15).

语种：英文

外文关键词：Acoustic impedance measurement - Acoustic properties - Acoustics - Composite materials - Density (specific gravity) - Fibers - Foams - Hot pressing - Polyesters - Sound insulating materials - Wood products

摘要：A sound-absorbing composite material made of wood fiber and polyester fiber was produced using polyester foam technology and wood-based composite technology. This study investigated the physical and mechanical properties and the effects of the airflow resistivity of the materials and the depth of the cavities behind on sound-absorbing performance of the composite material. The results showed that the composite of best physical and mechanical properties and sound absorption was made with a 150 degrees C hot-pressing temperature, 10 min hot-press time, 3 : 1 the ratio of wood fiber to polyester fiber, foaming agent content of 8%, and the nominal density of 0.2 g/cm(3); the composite material yielded superior sound absorption property with the airflow resistivity of 1.98 x 10(5) Pa.s/m(2); the acoustic absorption peak moved to lower frequencies when length of the cavities was increased.