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首页> 外文期刊>Journal of Applied Polymer Science >Study on polyurethane-acrylate/cerium dioxide modified by 3-(Methylacryloxyl)propyltrimethoxy silane and its UV absorption property
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Study on polyurethane-acrylate/cerium dioxide modified by 3-(Methylacryloxyl)propyltrimethoxy silane and its UV absorption property

机译：用3-（甲基丙烯酰氧基）丙基三甲氧基硅烷改性聚氨酯 - 丙烯酸酯/二氧化铈及其UV吸收性能

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摘要

Firstly, cerium dioxide(CeO2) was modified by 3-(Methylacryloxyl)propyltrimethoxy silane (KH-570), and modified CeO2 (mCeO(2)) was prepared. Then poly (urethane-acrylate) was modified by mCeO(2), and poly (urethane-acrylate)/modified CeO2 (PUA/mCeO(2)) composites with ultraviolet absorption property were prepared. The morphology, thermal hydrophobicity, mechanical properties, optical properties, and UV-absorption properties of PUA/mCeO(2) composites were studied. XRD and SEM analysis showed that the modified CeO2 had better dispersion in the matrix than that of pure CeO2. Ultraviolet-visible spectrum and thermogravimetric analysis were used to characterize the optical properties and thermal stability of PUA/mCeO(2) composites. The results showed that with the increasing of the mCeO(2) content, the UV-absorption property of PUA/mCeO(2) composites was improved gradually. When the content of mCeO(2) is 3%, the absorption of ultraviolet of PUA/mCeO2 composites is about 5 times of pure PUA film, and the absorption band is mainly in the UVA section. The thermal stability of PUA/mCeO(2) composites was improved with the adding of mCeO(2). With the increasing of mCeO(2) content, the contact angle of PUA/mCeO(2) composites increased significantly. And the UV-absorption mechanism of PUA/mCeO(2) Composites was studied. UV-curable PUA/mCeO(2) composites have good UV absorption property and water resistance. They will be used in the sun screen and protect people's skin.
机译：首先，用3-（甲基丙烯氧基）丙基三甲氧基硅烷（KH-570）对二氧化铈（CeO2）进行改性，制备了改性的CeO2（mCeO（2））。然后用mCeO（2）对聚氨酯丙烯酸酯进行改性，制备了具有紫外吸收性能的聚氨酯丙烯酸酯/改性CeO2（PUA/mCeO（2））复合材料。研究了PUA/mCeO（2）复合材料的形貌、热疏水性、力学性能、光学性能和紫外吸收性能。XRD和SEM分析表明，改性后的CeO2在基体中的分散性优于纯CeO2。利用紫外可见光谱和热重分析表征了PUA/mCeO（2）复合材料的光学性能和热稳定性。结果表明，随着mCeO（2）含量的增加，PUA/mCeO（2）复合材料的紫外吸收性能逐渐提高。当mCeO（2）含量为3%时，PUA/mCeO2复合材料的紫外吸收约为纯PUA薄膜的5倍，且吸收带主要位于UVA截面。mCeO（2）的加入提高了PUA/mCeO（2）复合材料的热稳定性。随着mCeO（2）含量的增加，PUA/mCeO（2）复合材料的接触角显著增大。研究了PUA/mCeO（2）复合材料的紫外吸收机理。紫外光固化PUA/mCeO（2）复合材料具有良好的紫外光吸收性能和耐水性。它们将用于防晒，保护人们的皮肤。

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