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机构地区:[1]南京航空航天大学材料科学与技术学院,南京210016
出 处:《复合材料学报》2016年第2期310-317,共8页Acta Materiae Compositae Sinica
基 金:江苏省科技支撑计划(BE2013124);江苏省科技成果转化基金(BA2013063);江苏高校优势学科建设工程(PAPD)
摘 要:采用静电植绒技术制备尼龙66纤维-Q235钢复合板,并研究了不同黏结剂涂覆量对植绒牢度的影响,通过SEM观察分析绒毛层的形貌,并通过传递函数法测量200-6 300 Hz频率范围内复合板的吸声性能,分析植绒电压、植绒时间、极板间距和纤维形态结构对吸声性能的影响。结果表明:植绒牢度随黏结剂涂覆量的增大而增大,在不产生气泡的前提下,100g/m^2为最佳涂覆量;吸声性能随植绒电压的增加而提高,但增幅逐渐减小,最终趋于稳定;植绒时间对吸声性能的影响趋势同植绒电压相似;吸声性能随极板间距的增大而降低,开始下降缓慢,随后逐渐加快,其最优植绒参数为植绒电压90kV、植绒时间40s、极板间距10cm;纤维形态结构也对尼龙66纤维-Q235钢复合板的吸声性能有明显影响,减小纤维长度和纤维直径均可提高复合板的吸声系数,最佳纤维形态结构参数为长度0.9mm、直径20μm。The nylon 66fiber-Q235 steel composite plate was made by electrostatic flocking technology,and the effect of different amount of adhesive coating on flocking fastness was studied.The morphology of villi layer was observed and analyzed by SEM,and the sound absorption properties of composite plate were measured by transfer function method in the frequency range of 200-6 300 Hz.The influences of flocking voltage,flocking time,plate spacing and fiber morphology structure on the sound absorption properties were analyzed.The results show that,flocking fastness increases with the increasing amount of adhesive coating,on the premise of no air bubbles,100g/m^2 is the best coating amount.As flocking voltage increasing,sound absorption properties improve,change rate decreases and finally tends to be stable.As plate spacing increasing,sound absorption properties decreases,begins to decline slowly,then gradually speeds up.The best flocking parameters are flocking voltage of 90 kV,flocking time of 40 s,plate spacing of 10 cm.Fiber morphology structure also has obviously influence on the sound absorption properties of nylon 66fiber-Q235 steel composite plate.Reduce the fiber length and fiber diameter both can improve the sound absorption coefficient of composite plate,the best fiber morphology structure parameters are length of0.9mm,diameter of 20μm.
关 键 词:静电植绒 吸声系数 植绒电压 植绒时间 极板间距 纤维形态结构
分 类 号:TB333[一般工业技术—材料科学与工程]
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