Jeong Hun Park*, Soo Woong Hwang**, Hun Hee Kang***, Mun-Young Hwang*†
* Multi-Material Research Center, Korea Automotive Technology Institute
** Moodng Co., Ltd.
*** R&D Team, NK Alkenz Co., Ltd.
박정훈* · 황수웅** · 강훈희*** · 황문영*†
This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
For application to floor carpets in electric vehicles, the adhesion and sound absorption performance of laminated composite materials with woven fabrics were compared and evaluated according to PVC and TPO coating materials and molding conditions. The experiments revealed that the surface adhesion characteristics between PET fibers and the PE bonding layer significantly affect the adhesive strength. Additionally, PVC exhibited generally higher adhesive strength compared to TPO, while the interlaminar shear strength increased as the material thickness decreased,. In the sound absorption performance test, specimens in 2t molding condition showed the best sound absorption performance in the specified frequency range. This study presented the morphological form and manufacturing conditions of composite materials for applying recycled materials to automobile parts.
본 연구는 전기자동차의 플로어 카페트 적용을 위해 직조 원단이 적용된 적층 복합소재에 대하여 PVC와 TPO 코팅 소재와 성형 조건에 따른 접착력 및 흡음성능을 비교 평가했다. PET 원사와 PE 결합층의 표면 접착 형태가 접착 강도에 중요한 영향을 미침을 확인하였다. 또한, PVC는 TPO에 비해 전체적으로 접착강도가 더 높았으며, 층간전단강도 실험 결과 소재 두께가 얇을수록 강도가 증가하는 경향을 보였다. 흡음성능 실험에서는 2t 성형 조건의 소재가 특정 주파수 영역에서 가장 우수한 흡음 성능을 보였다. 본연구는 재활용 소재를 자동차 부품에 적용하기 위한 복합소재의 형태와 제작 조건을 제시했다.
Keywords: 층간전단강도(Inter-Lamina Shear Strength), 성형 조건(Molding condition), 직조 원단(Woven fabrics), 적층 복합소재(Laminated composites), 흡음(Sound absorption)
2025; 38(1): 14-19
Published on Feb 28, 2025
Multi-Material Research Center, Korea Automotive Technology Institute