To improve the color stability of facial prosthesis silicone rubber, this paper studied the effect of nano titanium oxide with different surface treatments on the color stability of red pigment-colored silicone rubber. Under the simulated sunlight aging condition, this paper takes MDX4-4210 silicone rubber as the matrix, silicon aluminum-coated nano TiO₂ as the shading agent, and cadmium red oil paint as the colorant, and it observes the values of silicon aluminum-coated nano-TiO₂ silicone rubber film with 1 mm thickness and different concentrations (0, 0.05%, 0.10%, and 0.15%) before and after aging. The experimental results showed that in the four concentrations of silicon aluminum-coated nano-TiO₂ film, the values gradually decreased with the increase of the concentration of silicon aluminum-coated nano-TiO₂. The lowest was in the 0.10% group; however, it increased in the 0.15% group. There was a significant difference among the concentration groups . The method of covering nano-TiO₂ silicone rubber film with different concentrations of silicon aluminum has a certain effect on delaying the discoloration of prosthetic silicone rubber, and it provides a new idea for improving the color stability of the prosthetic silicone rubber.

中文翻译：

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不同表面处理的纳米二氧化钛对红色硅橡胶颜色稳定性的影响

为了提高面部假体硅橡胶的颜色稳定性，本文研究了不同表面处理的纳米二氧化钛对红色素着色硅橡胶颜色稳定性的影响。本文在模拟日光老化条件下，以MDX4-4210硅橡胶为基体，硅铝包覆纳米TiO ₂为遮光剂，镉红油漆为着色剂，观测了硅铝包覆纳米TiO 2 的数值。老化前后不同浓度（0、0.05%、0.10%、0.15%）的1 mm厚度的纳米TiO _{2硅橡胶薄膜。}实验结果表明，在四种浓度的硅铝包覆纳米TiO ₂薄膜中，_{随着硅铝包覆纳米TiO 2}浓度的增加，其值逐渐降低。最低的是0.10%组；然而，0.15%组中则有所增加。浓度组间有显着差异。采用不同浓度的硅铝覆盖纳米TiO 2 硅橡胶薄膜的方法对延缓假体硅橡胶的变色有一定的效果，为提高假体硅橡胶的颜色稳定性提供了新的_思路。