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10 min; 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1 600～4 000 Hz范围内,在140 ℃条件下材料平均吸声系数为0.65,而150 ℃条件下为0.7。
Abstract
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 preparing conditions on the mechanical properties and sound-absorbing performance of the composite were investigated. The results show that it is feasible to add the adhesive and a foaming agent into wood fibers and polyester fibers to make a composite 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 ℃.
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基金
收稿日期:2012-11-25 修回日期:2013-03-28
基金项目:中央级公益性科研院所基本科研业务费专项资金项目(CAFINT2011C04)
第一作者:王军锋,博士。*通信作者:彭立民,副研究员。E-mail: wangjunfeng017@163.com。
引文格式:王军锋,彭立民,傅峰,等. 木质纤维/聚酯纤维吸声材料复合工艺的研究[J]. 南京林业大学学报:自然科学版,2013,37(6):132-136.
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