Polymer(Korea), Vol.43, No.1, 77-84, January, 2019
자동차 내장재용 표피재의 촉감 평가
The Tactile Assessment of Skin Materials in Automotive Interior
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초록
자동차 내장재에 다양한 표피재가 적용되고 있다. 이는 탑승자와 접촉하므로 촉감 등에 영향을 준다. 본 연구에서는 천연가죽, 스웨이드 및 직물의 촉감 평가를 위해 새로운 평가법을 제시하고 재질별 차이점을 분석하였다. 촉감은 재료 표면을 터치했을 때 발생하는 마찰과 압축 특성에 영향을 받는다. 일정 하중 및 속도 하에서 X, Y 양 방향의 평면마찰을 동시에 정량화할 수 있는 촉감평가기를 고안하여 재료 표면의 실질적인 평면마찰을 정량화하였고, 가와바타 측정 시스템을 통해 재료의 압축 특성이 촉감에 미치는 영향에 대해 조사하였다. 촉감평가기를 이용한 표피재의 평면마찰특성 평가결과, 고급 표피재 재질일수록 평면마찰계수가 컸고, 동일 재질에서는 고급 등급이 일반 등급보다 평면마찰계수는 작았다. 압축 특성 평가 결과, 표피재 재질, 종류 별로 일정한 경향성은 나타나지 않았다. 표피재 촉감은 압축 특성보다는 표면의 평면마찰특성에 영향을 더 크게 받았다. 본 연구에서 제시된 촉감평가법은 향후 제품 개발 시 활용될 수 있을 것으로 기대된다.
Various surface materials are used in automotive interior. Occupants are in contact with those. In this study, a new tactile assessment method of genuine leather, suede, and woven was suggested. The tactile property of each material was investigated. The tactile property is affected by friction and compressive. The plane friction coefficients were quantified by the tactile meter. The compressive effect on tactile property was investigated by Kawabata evaluation system compression test. The results of plane friction assessment showed that the more luxurious surface materials were, the greater plane friction coefficients were. Among the same surface materials, the plane friction coefficients of luxurious grade were lower than those of general grade. In the compression test, there were no tendency by materials. The tactile properties of surface materials were more affected by plane frictional property than compressive property. This tactile assessment method suggested is expected to be applied to develop new products.
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