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首页> 外文期刊>Journal of Applied Polymer Science >The effect of pigments on the stability of silicone/montmorillonite prosthetic nanocomposites
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The effect of pigments on the stability of silicone/montmorillonite prosthetic nanocomposites

机译：颜料对有机硅/蒙脱土纳米复合材料稳定性的影响

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ABSTRACT: The purpose of this investigation was to evaluate the protection provided to silicone by pigments, such as dry earth pigments. In addition, the effect of nanostructured and organically modified montmorillonite fillers on the overall behavior of reinforced systems was explored. To obtain relevant data and, furthermore, to reveal possible mechanisms of structural changes that could influence silicone stability, pure and reinforced silicon elastomers were mixed with various colorants and studied for their stability to accelerating aging, during the exposure to UV radiation and humidity. A number of tests were run such as, Attenuated Total Reflectance, Fourier Transform Infrared Spectroscopy (ATR-FTIR), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and Tensile measurements. Swelling in toluene and color tests were also carried out. The experimental results showed that the UV aging of silicone elastomers results in chain scission and cross-linking rather than formation of oxygen containing groups. The main conclusion of this work is montmorillonite acts as a significant reinforcement and protects silicone against degradation during exposure to UV irradiation.
机译：摘要：这项研究的目的是评估诸如干土颜料之类的颜料对硅酮的保护作用。此外，还研究了纳米结构和有机改性的蒙脱土填料对增强体系整体性能的影响。为了获得相关数据，并进一步揭示可能影响有机硅稳定性的结构变化机理，将纯硅和增强硅弹性体与各种着色剂混合，并研究了它们在暴露于紫外线和湿气中对加速老化的稳定性。运行了许多测试，例如衰减全反射，傅立叶变换红外光谱（ATR-FTIR），热重分析（TGA），差示扫描量热法（DSC）和拉伸测量。还进行了甲苯溶胀和颜色测试。实验结果表明，有机硅弹性体的紫外线老化导致断链和交联，而不是形成含氧基团。这项工作的主要结论是蒙脱石起到了重要的增强作用，并保护了有机硅在暴露于紫外线照射下不会降解。

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