表面技术2017，Vol.46Issue(4)：132-137,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.04.022
汽车高装饰性涂层在国内典型气候中的耐候性表现及分析
Weather Resistance and Analysis of Automobile Decorative Coating in
Typical Domestic Climate
王纳新 1廖大政 1李博雅 1张馨月1
作者信息
- 1. 中国第一汽车股份有限公司技术中心,长春 130011
- 折叠
摘要
Abstract
The work aims to improve weather resistance of automobile coatings by selecting appropriate test conditions and methods. Universally accepted environmental benchmark test stand conditions were compared, natural exposure test conditions of domestic environment experimental station were analyzed, regularity and correlation between artificial accelerated aging test and natural outdoor exposure test were further analyzed, weather resistance of same coating with different substrates, and sug-gestions on quality control of high automobile decorative varnish and coating were proposed. In terms of light lost rate, 3000 h artificial accelerated aging test had poor correlation with 12 & 15 months natural exposure in Qionghai (damp and hot) and Dunhuang (dry and hot) (both<0.8), and negative correlation with 12 and 15 months natural exposure in Jiangjin (acid) and Mohe (cold) with great fluctuation data. 3000~5000 hours artificial aging test is recommended to inspect automobile decorative coating varnish. At least two damp and hot as well as dry and hot zones are selected for natural exposure test to be conducted for at least 2 years. Due to particularity of automobile products, the artificial accelerated aging test shall focus on: (1) selection of test conditions; (2) strengthening permeation of water molecules to coating, humidity control and guarantee the moisture content in the coating in the coating during the test; (3) simulating day and night temperature difference change.关键词
高装饰性清漆/耐候性/相关性/质量控制/人工加速老化试验/户外自然曝晒试验Key words
high decorative varnish/weather resistance/correlation/quality control/QUV test/natural outdoor exposure test分类
矿业与冶金引用本文复制引用
王纳新,廖大政,李博雅,张馨月..汽车高装饰性涂层在国内典型气候中的耐候性表现及分析[J].表面技术,2017,46(4):132-137,6.
