摘要
由于受到光照、温度等因素的影响,制品在较短时间内就会变黄老化,使用寿命较短,较短的使用寿命使得制品的生产成本增加。针对某型机载产品高温贮存试验后漆面黄变问题,本研究采用故障树分析法系统排查失效原因,结合材料表征与复现实验揭示了黄变机理。研究表明,试验箱箱门内的聚氨酯泡沫填缝剂在高温下释放氯系催化剂,引发丙烯酸树脂漆层中双键/酯基的氧化断裂,形成共轭羰基显色结构。通过设备材料替换、工艺优化及风险管控措施,问题得到有效解决。本研究为航空电子产品环境试验质量控制提供了重要参考。
Due to the influence of factors like light exposure and temperature,the product yellowed and aged within a relatively short period,resulting in a shorter service life.This limited lifespan contributed to increased production costs.To address the issue of paint yellowing observed after high-temperature storage testing of a specific airborne product,this study employed Fault Tree Analysis(FTA)to systematically investigate the failure causes.Material characterization and reproduction experiments were conducted to reveal the yellowing mechanism.Research indicates that polyurethane foam sealant within the test chamber door released chlorinated catalysts under high temperatures.These catalysts triggered the oxidative cleavage of double bonds/ester groups in the acrylic resin paint layer,forming conjugated carbonyl chromophores responsible for the coloration.Through measures including equipment material replacement,process optimization,and risk control,the problem was effectively resolved.This study provides significant reference for quality control in environmental testing of aviation electronic products.
作者
解阳阳
张迅践
郭勇
张轩铭
翟凯悦
王旋
XIE Yang-yang;ZHANG Xun-jian;GUO Yong;ZHANG Xuan-ming;ZHAI Kai-yue;WANG Xuan(Xi'an Xice Testing Technology Co.,Ltd.,Xi'an 710000)
出处
《环境技术》
2025年第7期120-125,共6页
Environmental Technology
关键词
漆面发黄
丙烯酸树脂漆层
聚氨酯泡沫
傅里叶红外光谱
paint yellowing
acrylic resin coating
polyurethane foam
Fourier transform infrared spectroscopy(FTIR)
