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试验研究

一种有机复合涂层在户外大气环境下的3 a老化行为

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  • 中国兵器科学研究院宁波分院
方晓祖(1981-),硕士,副研究员,主要从事环境试验研究,电话:18968210654,E - mail:fangxiaozu@126.com

收稿日期: 2021-12-08

  修回日期: 2022-01-18

  录用日期: 2022-02-21

  网络出版日期: 2024-01-09

Aging Behavior of an Organic Composite Coating in Outdoor Atmospheric Environments for 3 Years

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  • Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China

Received date: 2021-12-08

  Revised date: 2022-01-18

  Accepted date: 2022-02-21

  Online published: 2024-01-09

摘要

为考察一种有机复合涂层体系(H53涂层)的环境老化行为及其主要环境因素,在6个环境试验站开展3 a大气暴露试验。在大气暴露试验后,H53涂层发生了不同程度的失光和变色,在万宁出现了大面积锈蚀。通过对H53涂层大气暴露试验和室内加速试验演变规律分析,大气暴露试验6个月是H53涂层失光变色的重要节点。通过主要环境因素和H53涂层老化数据之间的相关性分析发现,H53涂层早期(0~6个月)失光和变色的主要环境因素都是日照,中后期(6~36个月)失光的主要环境因素是温度、降水、湿度,中后期变色的主要环境因素是温度、日照时数、降水、湿度。H53涂层大气暴露试验后会发生膜下腐蚀,万宁的膜下腐蚀最显著,是导致样品大面积锈蚀的原因。

本文引用格式

方晓祖, 顾明俊, 曹学军, 闫薇 . 一种有机复合涂层在户外大气环境下的3 a老化行为[J]. 材料保护, 2022 , 55(6) : 41 -47 . DOI: 10.16577/j.issn.1001-1560.2022.0152

Abstract

Aiming at investigating the environmental aging behavior of an organic composite coating (H53 coating) and the corresponding main environmental factors, three - years atmospheric exposure tests were carried out at six environmental test stations. After the atmospheric exposure tests, H53 coatings lost gloss and changed color in varying degrees, and a large area of corrosion appeared in Wanning. Based on the analysis of the evolution laws obtained from atmospheric exposure test and indoor accelerated test of H53 coating, it could be found that six months of atmospheric exposure was an important node for the discoloration of H53 coating. According to the correlation analysis between the main environmental factors and the aging data of H53 coating, the main environmental factor of gloss loss and discoloration of H53 coating in the early stage (0~6 months) was the sunshine, the main environmental factors of gloss loss in the middle and late stage (6~36 months) were temperature, precipitation and humidity, and the main environmental factors of discoloration in the middle and late stage were temperature, sunshine hours, precipitation and humidity. Besides, under - film corrosion of H53 coating occurred after atmospheric exposure tests, and the most significant under - film corrosion occurred in Wanning, which resulted in a large area of corrosion on the sample.
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