目的 研究真空卷绕式蒸发镀膜设备的工艺,为宽幅镀铝聚酯薄膜在航天产品上的应用以及贮存环境要求提供试验依据。方法 通过真空卷绕式蒸发镀膜设备工艺调控,并对薄膜外观质量、热辐射、附着力、表面电阻率以及环境试验等物理性能进行测试,研究工艺对镀铝聚酯薄膜性能的影响。结果 实现生产宽幅1 500 mm的镀铝聚酯薄膜的能力,验证了宽幅1 500 mm镀铝聚酯薄膜物理性能的可靠性,并在试验过程中发现镀膜室清洁度对镀铝聚酯薄膜附着力的影响。结论 在宽幅方向均匀布置16个蒸发舟,可以满足铝膜成型需求。镀膜前后采用的同步传动的无摩擦展平技术,可以保证薄膜加工过程中光、平、展的效果。长期湿热实验表明,镀铝聚酯薄膜在高温高湿环境下会影响产品使用寿命,应避免高温高湿环境下长期贮存。
Abstract
The work aims to research the process of vacuum wound evaporation coating equipment to provide experimental basis for the application and storage environment requirements of wide aluminum coated polyester films in aerospace products. By regulating the process of vacuum wound evaporation coating equipment and testing the physical properties of films in terms of surface quality, thermal radiation, adhesion, surface resistivity, and environmental testing, the influence of the process on the properties of aluminum coated polyester films was studied. The ability to produce aluminum coated polyester films with a width of 1 500 mm was achieved, and the reliability of the physical properties of the aluminum coated polyester films with a width of 1 500 mm was verified. During the testing process, it was found that the cleanliness of the coating room had an impact on the adhesion of the aluminum coated polyester films. Arranging 16 evaporation boats evenly in the width direction can meet the requirements of aluminum film forming. The synchronous transmission frictionless flattening technology used before and after coating can ensure the smooth, flat, and flattened effects during the film processing. Long term damp heat tests show that aluminum coated polyester films can affect the service life of products in high temperature and high humidity environments, and long-term storage in high temperature and high humidity environments should be avoided.
关键词
聚酯薄膜 /
镀铝 /
宽幅
Key words
polyester film /
aluminum plating /
wide width
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