汽车ASA材料超声波雷达衰减性能的研究

Attenuation performance of ultrasonic radar of automotive ASA materials

因雨季时雨水会影响装嵌在丙烯腈‑苯乙烯‑丙烯酸共聚物(ASA)格栅里的雷达波探测器发出的雷达波的传导方向而产生误报,本工作的目的是探究汽车ASA格栅材料提高雷达波衰减性能的影响因素,从优化材料的角度降低雷达误报的风险。经实验研究发现,ASA材料中的丙烯酸酯含量和种类是关键的影响因素,丙烯酸酯含量高且橡胶粒径较小的ASA胶粉表现出更好的雷达波衰减特性。

During the rainy season,rain will affect the direction of the radar wave emitted by the radar detector embedded in the acrylonitrile‑styrene‑acrylic acid copolymer(ASA)grid,resulting in misreport.The purpose of this work is to explore the influence factors of automobile ASA grille material to improve the attenuation performance of radar wave and to reduce the risk of misreport by radar from the perspective of material optimization.The results indicated that the content and type of acrylate segment in the ASA material were the key factor,and the ASA powders with a high acrylate content and a small rubber particle size exhibited better attenuation performance of radar wave.