Study on Weatherability of Rutile Nano-TiO2 in Heavy-duty Coating
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摘要: 对金红石型纳米TiO2用于防腐涂料耐候抗老化性能进行了研究。用不同配比的纳米TiO2制备的纳米复合涂料,能有效阻止基体树脂的氧化,延长涂料使用寿命,提高涂料防腐性能,而且改性能力与纳米粉体的加入量呈一定比例关系。纳米TiO2吸收光谱表明,TiO2在200~400nm紫外光区能吸收95%以上的紫外光。Abstract: The weatherability of heavy-duty coating modified by rutile nano-TiO2 was tested. In the conditions of different nano-TiO2 ratio and different aging time, the examination results of heavy-duty coating modified by ultra-fines demonstrate that the compound nano-coatings can prevent the resin from oxidizing efficiently, prolong the coating's service age, and so improve the weatherability of coating. The modifying capability of ultra-fines is proportional to its amount in the coating. The absorption spectra of ultra-fine titanium dioxide powders confirme that nano-TiO2 can absorb 95% of the ultraviolet light in UV spectrum.
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Key words:
- rutile TiO2 /
- nano-TiO2 /
- heavy-duty coating /
- weatherability
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