论文总字数：17848字

摘 要

增透膜溶胶制膜方法通常有浸渍提拉法、旋转涂覆法、喷涂法、简单刷涂法和液面下降法等。对于常见的浸渍提拉法，由于要求提拉速度稳定，所以很难在控制下制得厚度连续渐变的增透膜。本文立足于液面下降法的特点，利用改变容器形状来控制厚度连续渐变的梯度，制得厚度连续变化的增透膜。

实验通过建模与模拟的方法，得到了液面下降速率与厚度的关系，并模拟出梯形体容器对应制得膜的形态，又通过逆向建模的方法，得到了劈尖膜对应的不规则容器为圆台型容器，凸透镜膜对应的不规则容器为沙漏型容器，凹透镜膜对应的不规则容器为花瓶型容器。

最后，利用圆台容器制得的增透膜，其不同位置的透过率峰值分别为475 nm、520 nm、560 nm和560 nm，证明此增透膜是厚度渐变的。

关键词：增透膜 液面下降法 逆向建模 厚度渐变

Research of the preparation of coating by drawdown method

ABSTRACT

Coating sol membrane method mainly includes impregnation pulling method, spin coating method, spraying method, simple brush method and drawdown method, etc. It is difficult to get the continuous variation of coating thickness under the control, because dipping pulling method requires stable lifting speed. In this paper, we base on the characteristics of the drawdown method . By changing the shape of container to control the thickness of the continuous gradient, in order to get the continuous variation of coating thickness.

Experiment obtained the relationship between the thickness of the drawdown rate, and simulate the trapezoid body containers to the system of membrane morphology through the method of modeling and simulation. Experiment get the splitting point membrane corresponding irregular containers for the frustum of a cone type, convex lens membrane corresponding irregular containers for the hourglass, concave lens membrane corresponding irregular containers for the vase through reverse modeling methods.

Finally, The different position of the peak transmittance is respectively 475 nm, 520 nm, 560 nm and 560 nm,we verify the thickness of coating which apply the frustum of a cone type container with is gradient.

Keywords: coating; Drawdown method; Reverse modeling; Gradient film thickness

目录

摘要..........................................................................................Ⅰ

Abstract.....................................................................................Ⅱ

第一章 文献综述..........................................................................1

1.1 引言....................................................................................1

1.2增透膜原理............................................................................1

1.3 制膜技术的发展.....................................................................4

1.4 溶胶制膜方法........................................................................7

1.5 本文研究的意义及内容............................................................8

第二章 利用液面下降法结合不规则容器制备一维纳米梯度渐变的劈尖膜的建..................................................................................9

2.1 用液面下降法结合梯形容器制备一维纳米渐变劈尖膜.....................9

2.2 理想一维纳米渐变劈尖膜对应不规则容器的逆向建模....................12

第三章 利用液面下降法结合不规则容器制备一维纳米梯度渐变的凸透膜和凹透膜的建模...............................................................15

3.1 用液面下降法结合梯形容器制备一维纳米渐变凸透膜...................15

3.2 用液面下降法结合梯形容器制备一维纳米渐变凹透膜...................17

第四章 利用液面下降法结合不规则容器两次镀膜制备二维纳米梯度渐变的凸透膜和凹透膜的建模.................................................20

4.1 用液面下降法结合梯形容器制备二维纳米梯度渐变的凸透膜的建模.20

4.2 用液面下降法结合梯形容器制备二维纳米梯度渐变的凹透膜的建模.21

4.3 梯形容器镀制凸凹透镜膜连续性验证………………………….23

4.4 理想纳米梯度渐变的二维凸透膜对应不规则容器的逆向建模..........24

4.5 理想纳米梯度渐变的二维凹透膜对应不规则容器的逆向建模..........26

第五章 实验验证一维纳米渐变劈尖膜模型..................................30

5.1 实际与仪器.........................................................................30

5.2 制备过程............................................................................31

5.3 工艺流程图.........................................................................31

5.4 性能测试............................................................................31

第六章 结论与展望.....................................................................33

6.1 结论...................................................................................33

6.2 展望...................................................................................33

参考文献....................................................................................34

致谢...........................................................................................35

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