摘要
利用聚合物发泡技术和木质人造板复合工艺制备木质纤维／聚酯纤维复合吸声材料，并研究复合工艺条件对该材料力学性能及吸声性能的影响。结果表明：将胶黏剂和发泡剂加入木质纤维及聚酯纤维中进行复合是可行的；较佳复合工艺为热压温度150℃，加压时间10min；在一定温度范围内，随着时间的延长，材料力学性能有所提高，声学性能变化不大；在一定时间范围内，随着温度的升高，材料的力学性能和声学性能都有所提高。频率为1600—4000Hz范围内，在140oC条件下材料平均吸声系数为0．65，而150℃条件下为0．7。
Polymer foaming technology and wood-based composite technology are used for producing sound-absorbing composite materials using wood fiber and polyester fiber as the raw materials in this paper, and the effects of the prepar- ing conditions on the mechanical properties and sound-absorbing performance of the composite were investigated. The re- sults show that it is feasible to add the adhesive and a foaming agent into wood fibers and polyester fibers to make a com- posite material, and the optimum conditions were determined as follows： hot pressing temperature 150 ℃ and composite time is 10 min. In a certain temperature range, the mechanical properties are improved along with time increasing, while the time has little effect on the acoustic performance. And in a certain time range, as the temperature increases, both the mechanical properties and acoustic performance improved. The average absorption coefficient of the material is 0. 65 at the temperature 140 ℃ in the range from 1 600 Hz to 4 000 Hz, while it is 0. 7 at 150 ℃.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第6期132-136,共5页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
中央级公益性科研院所基本科研业务费专项资金项目(CAFINT2011C04)
关键词
木质纤维
聚酯纤维
吸声材料
wood fiber
polyester fiber
sound-absorbing materials
