BOPET基镀铝薄膜静电场中表面吸附能力的研究

发布时间：2018-08-28 09:23

【摘要】：目的通过对一种双向拉伸聚酯(BOPET)基镀铝薄膜表面高压静电场中吸附能力的研究,找到提高高压静电提取灰尘足迹能力的途径。方法使用普通提取灰尘足迹用高压静电提取仪,对BOPET基镀铝薄膜表面施加高压静电场,控制电极与镀铝薄膜之间的距离,并采用不同粒径的Si O2颗粒对薄膜在静电场中的吸附能力进行表征。使用光学显微镜、电子显微镜、XRD分析技术及精密分析天平,对薄膜组织结构进行了研究,分析了在高压静电场环境中影响薄膜表面静电吸附能力的原因,并对引起变化的因素进行了讨论。结果 BOPET薄膜在静电场中会向下压紧物体表面,压紧和静电吸附力会随高压电极与镀铝薄膜表面距离的变化而不同。薄膜对颗粒的吸附能力与其带电量显著相关,随颗粒带电量的增加,薄膜表面的吸附能力明显增强。减小电极与薄膜之间的距离可增大薄膜附近的电场强度,是提高其表面静电吸附能力的有效途径。结论 BOPET基镀铝薄膜在高压静电场中会与其下的地面构成平板电容器。静电场中颗粒所带电荷的大小与其形状显著相关,微米颗粒所带电荷较多,从而在BOPET薄膜表面的吸附增重率最大。随电极与薄膜间距离的增加,电场强度降低,颗粒所带电量同时减小,吸附增重率迅速降低,15~10 mm的距离为电场对不同颗粒的静电吸附能力变化最大区间。
[Abstract]:Aim to find a way to improve the ability of extracting dust footprint on the surface of a biaxially stretched polyester (BOPET) based aluminum film in high voltage electrostatic field. Methods High voltage electrostatic field was applied to the surface of BOPET based aluminum film by using a high voltage electrostatic extractor to extract dust footprint, and the distance between the electrode and aluminum film was controlled. The adsorption capacity of the films in electrostatic field was characterized by Si O 2 particles with different diameters. Using optical microscope, electron microscope, XRD analysis technique and precision analysis balance, the structure of the film was studied, and the reasons that affected the electrostatic adsorption ability of the film surface in the environment of high voltage electrostatic field were analyzed. The factors causing the change are also discussed. Results the surface of BOPET film will be pressed down in electrostatic field, and the compression and electrostatic adsorption force will vary with the distance between the high voltage electrode and the surface of aluminized film. The adsorption ability of the film to the particles is significantly related to the charge of the film. With the increase of the charge of the particle, the adsorption capacity on the surface of the film is obviously enhanced. Decreasing the distance between the electrode and the film can increase the electric field intensity near the film, which is an effective way to improve the electrostatic adsorption ability of the film. Conclusion in high voltage electrostatic field, BOPET-based aluminum-plated film will form a flat capacitor with the ground under it. In electrostatic field, the size of charge carried by particles is significantly related to its shape, and the charge of micron particles is more than that of other particles, thus the adsorption weight gain rate on the surface of BOPET films is the highest. With the increase of the distance between the electrode and the film, the electric field intensity decreases, the electric quantity of the particles decreases simultaneously, and the distance from 15 ~ 10 mm to the adsorption rate decreases rapidly. The range of the electrostatic adsorption ability of different particles is the maximum range of the change of the electrostatic adsorption capacity of the electric field to different particles.
【作者单位】：新疆警察学院;中国刑事警察学院;
【基金】：公安部科技强警基础工作专项(2017GABJC11) 新疆高等学校重点项目(XJEDU2014I050)~~
【分类号】：TB383.2

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