Attenuation performance of ultrasonic radar of automotive ASA materials

doi:10.19491/j.issn.1001-9278.2024.05.014

Abstract

Abstract:

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.

Key words: automotive intelligentization, radar ultrasonic wave, acrylonitrile?styrene?acrylate copolymer

CLC Number:

TQ321

Cite this article

LI Mingkun, LIN Rongtao, ZHANG Yong, LIU Peiru, LIU Kai. Attenuation performance of ultrasonic radar of automotive ASA materials[J]. China Plastics, 2024, 38(5): 78-81.

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URL: https://www.plaschina.com.cn/EN/10.19491/j.issn.1001-9278.2024.05.014

https://www.plaschina.com.cn/EN/Y2024/V38/I5/78

Figures/Tables 9

胶粉种类	丙烯酸酯实际含量/%	橡胶粒径/nm	核	生产厂家
ASA1	58	600~800	含硅	安徽东海塑业有限公司
ASA2	58	300	含硅	安徽东海塑业有限公司
ASA3	50	100	含硅	三菱丽阳高分子材料（南通）有限公司
ASA4	60	400±100	不含硅	日本UMG株式会社

胶粉种类	丙烯酸酯实际含量/%	橡胶粒径/nm	核	生产厂家
ASA1	58	600~800	含硅	安徽东海塑业有限公司
ASA2	58	300	含硅	安徽东海塑业有限公司
ASA3	50	100	含硅	三菱丽阳高分子材料（南通）有限公司
ASA4	60	400±100	不含硅	日本UMG株式会社

Tab.1. Parameters of the ASA resins

Fig.1. Schematic diagram of the ultrasonic attenuation device

Fig.2. Mechanism diagram of the ultrasonic attenuation test

Fig.3. Typical patterns of the ultrasonic test

Fig.4. Ultrasonic attenuation patterns of PP and SAN materials

Fig.5. Ultrasonic attenuation of different polymer materials

Fig.6. Effect of ASA resin type on ultrasonic attenuation

胶粉种类	丙烯酸酯含量/%	橡胶粒径/nm	核	衰减量/dB
ASA1	60	600~800	含硅	3.12
ASA2	60	300	含硅	3.36
ASA3	50	100	含硅	3.71
ASA4	60	400+100	不含硅	4.37

胶粉种类	丙烯酸酯含量/%	橡胶粒径/nm	核	衰减量/dB
ASA1	60	600~800	含硅	3.12
ASA2	60	300	含硅	3.36
ASA3	50	100	含硅	3.71
ASA4	60	400+100	不含硅	4.37

Tab.2. Radar wave attenuation properties of different materials

种类	MI/g·10 min^-1	An含量/%	衰减量/dB
SAN1	30	25	4.30
SAN2	20	25	4.10
SAN3	10	32	4.20

种类	MI/g·10 min^-1	An含量/%	衰减量/dB
SAN1	30	25	4.30
SAN2	20	25	4.10
SAN3	10	32	4.20

Tab.3. Effect of different SAN on radar attenuation properties of the ASA materials

References 4

1	王爱文.汽车自动驾驶的现状及发展前景［J］.农业装备技术，2018，44（06）：56⁃57+59
2	华幼卿，金日光.高分子物理［M］.北京：化学工业出版社，2013：189⁃224
3	Lionetto F， Maffezzoli A. Polymer characterization by ultrasonic wave propagation ［J］. Advances in Polymer Technology， 2009， 27（2）：63⁃73
4	Peng Q， Zhu Z， Jiang C，et al.Effect of stress relaxation on accelerated physical aging of hydrogenated nitrile butadiene rubber using time⁃temperature⁃strain superposition principle［J］. Advanced Industrial & Engineering Polymer Research， 2019： 61⁃68

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