Ultraviolet shielding property of crylic acid resin filled with nano-SiO2 |
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| Authors: | Yan Rui Wu Hang Ma Shi-ning Xu Bin-shi |
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| Affiliation: | (1) Institute of Equipment Surface Engineering, Armored Force Engineering Academy, 100072 Beijing, China;(2) Department of Scientific Research, Armored Force Engineering Institute, 100072 Beijing, China;(3) National Key Laboratory for Remanufacturing, 100072 Beijing, China |
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| Abstract: | The present status and development trends of nano-composite coatings were briefly introduced. The nano-SiO2 was dispersed into crylic acid resin by ultrasonic wave and high-energy ball milling, the influence of nano-SiO2 on shielding property of coatings was investigated. Relation between particle size distribution of original nano-SiO2 and its dispersal in water and alcohol after treatment were analyzed, respectively. The ultraviolet permeation rate of coatings filled with nano-SiO2 was detected by ultraviolet spectral photometer. And the particle size distribution of coatings was examined by TEM. The results show that particle size distribution is comparative convergence and smaller one order of magnitude after dispersal treatment. The size of most nano-SiO2 in coatings is smaller than 100 nm, which indicates that the amount of nano-SiO2 in the resin is 20% (solid content of resin), the permeation rate of ultraviolet of composite coatings decreases to 20%. The research of its excellent ultraviolet shielding property mechanism indicates minor size and high surface energy of nano-SiO2 can produce different absorption, reflection and scatter actions to different wavelengths. Foundation item: Project(2001ZB05) supported by Maintenance and Innovation in 2001 |
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| Keywords: | nano-composite coatings nano-SiO2 crylic acid resin ultraviolet shielding |
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