Article
  • Study on the Surface Form of Damaged Soft Skin and Test Method
  • Seul Yi , Seungjin Lee*, Seojin Lee*, Junghyun Lee*, Insoo Han, and Mijung Yoon

  • Materials Development Center, Hyundai Motor Company, Hwaseong 18280, Korea
    *Reliability Assessment Center, FITI Testing & Research Institute, Seoul 07791, Korea

  • 소프트 스킨의 표면 긁힘손상 형태 분석 및 시험법 연구
  • 이슬 · 이승진* · 이서진* · 이정현* · 한인수 · 윤미정

  • 현대자동차 재료개발센터, *FITI시험연구원 소재부품신뢰성센터

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

In this study, surface form of damaged soft TPU skin were analyzed to expect the mechanism and the test method which reproduce the form was researched. First, samples were characterized into several groups depending on its surface form and analyzed. Then, the principle of perception in surface change was studied. Specimens were tested by major scratch and wear resistance test methods to develop test method, which replicates surface form of damaged sample. The effects of environmental aging – thermal and UV light aging – was also studied by testing chemical change of specimens and perception of scratch depending on the aging time.


자동차 내장재에 적용되는 thermoplastic polyurethane(TPU) 소프트 스킨의 긁힘 손상 형태를 분석하여 메커니즘을 예측하고 이를 모사할 평가방법에 대하여 연구하였다. 우선 손상 샘플을 대표적인 형태별로 분류하였고, 손상 부위의 변화를 정밀분석하여 어떠한 원리로 외관 변화가 발생하였는지 원인을 고찰하였다. 그리고 소프트 스킨 외관 품질을 관리하는 주요 방법들로 평가하였을 때의 손상 형태를 비교분석하여 샘플의 손상 형태를 모사할 수 있는 재현평가법을 도출하였다. 또한 내열 및 내광 환경 노화 시 조건 별로 시료의 화학적 변화, 긁힘 시인성을 평가하여 영향 인자를 분석하였다.


Keywords: automobile interior parts, thermopolyurethane, surface form of mar, scratch test.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2020 Impact Factor : 0.493
  • Indexed in SCIE

This Article

  • 2022; 46(2): 198-207

    Published online Mar 25, 2022

  • 10.7317/pk.2022.46.2.198
  • Received on Nov 8, 2021
  • Revised on Dec 4, 2021
  • Accepted on Jan 5, 2022

Correspondence to

  • Seul Yi
  • Materials Development Center, Hyundai Motor Company, Hwaseong 18280, Korea

  • E-mail: ysl@hyundai.com