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利用两种聚合物合成改性手段制备了纳米颗粒SiO2掺杂PMMA溶胶,并采用旋涂法甩膜制得PMMA改性聚合物薄膜。通过分析薄膜样品在红外和可见光波长范围内的光损耗特性,优化了制备工艺,使其在提高热稳定性的同时能保证优良的光学性能。另外,还测试分析了改性PMMA薄膜在不同紫外光照条件下折射率和厚度的变化,从宏观现象与微观结构之间的关系及作用机理的角度进行了深入的理论分析。
Two kinds of polymer synthesis and modification methods were used to prepare nano-SiO2 doped PMMA sol, and the spin-coating method was used to produce PMMA-modified polymer films. By analyzing the light loss characteristics of the film samples in the infrared and visible wavelength range, the preparation process is optimized to ensure excellent optical properties while improving thermal stability. In addition, the change of refractive index and thickness of the modified PMMA film under different UV-light conditions was also tested. The theoretical analysis of the relationship between the macroscopic phenomenon and microstructure and the mechanism of action were carried out.