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Study on polyurethane‐acrylate/cerium dioxide modified by 3‐(Methylacryloxyl)propyltrimethoxy silane and its UV absorption property
Author(s) -
Yu Xiaochen,
Zheng Jia,
Zhou Zhaoxi,
Chen Qihui,
Hong Maochun,
Fu Heqing
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50760
Subject(s) - materials science , thermal stability , composite material , acrylate , polyurethane , absorption (acoustics) , cerium , thermogravimetric analysis , ultraviolet , chemical engineering , polymer , copolymer , optoelectronics , engineering , metallurgy
Firstly, cerium dioxide(CeO 2 ) was modified by 3‐(Methylacryloxyl)propyltrimethoxy silane (KH‐570), and modified CeO 2 (mCeO 2 ) was prepared. Then poly (urethane‐acrylate) was modified by mCeO 2 , and poly (urethane‐acrylate)/modified CeO 2 (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 CeO 2 had better dispersion in the matrix than that of pure CeO 2 . 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.