摘要
通过水浸法研究了玻璃微珠填充聚苯乙烯(PS)复合材料的超声波传播特性。分别采用不同粒度和用量的玻璃微珠填充PS,研究其对超声波在复合材料中的声速、声衰减系数的影响。结果表明:当玻璃微珠粒径远小于波长时,声速随着玻璃微珠用量的增加而增大,而此时粒子尺寸的变化对其影响不大;声衰减系数则随玻璃微珠用量的增加而变化很小。当粒径接近波长时,声速随玻璃微珠用量增加而减小,而声衰减系数在低玻璃微珠用量时呈线性增大趋势。
The water immersion method was adopted to research ultrasonic propagation characteristics of the glass beads filled polystyrene （PS）. The ultrasonic sound velocity, sound attenuation coefficient of the PS composite filled with different size and different content of glass beads were studied respectively. The results show that when particle size of glass beads is far less than the wavelength, the sound velocity increases with the increase of glass beads content, and the change of sound attenuation coefficient along with the glass beads content is small. However, when particle size of glass beads is close to the wavelength, the sound velocity decreases with the increase of glass beads content, but the sound attenuation coefficient increases linearly at low glass beads content.
出处
《塑料科技》
CAS
北大核心
2014年第4期43-47,共5页
Plastics Science and Technology
基金
国家重大科学仪器设备开发专项项目(2012YQ230043)
关键词
玻璃微珠
聚苯乙烯
超声波
声速
声衰减系数
Glass beads
PS
Ultrasound wave
Sound velocity
Sound attenuation coefficient
