摘要：以煅烧高岭土和纳米氧化锌为主要原料,用水解沉淀法在煅烧高岭土表面包覆纳米氧化锌,制备一种无机复合型抗紫外材料;采用分光光度计分别测定在波长325、350、375、400nm紫外光下复合材料的紫外光吸光度。结果表明:反应温度、氧化锌包覆量、改性时间、改性剂滴加速度、矿浆浓度、煅烧温度等对纳米氧化锌-煅烧高岭土复合粉体材料的紫外光吸收性能有重要影响。在制备条件为:氧化锌包覆量为8%、反应温度为90℃、改性时间为10min、改性剂滴加速度为3mL/min、矿浆中m(水)∶m(煅烧高岭土)=10∶1、煅烧温度为400℃时,所制备的纳米氧化锌-煅烧高岭土复合粉体材料的紫外光吸收性能较好。
关键词：纳米氧化锌；煅烧高岭土；抗紫外材料
Abstract：Using calcined kaolin and nano-sized zinc oxide as the main raw material， with preparation of nano-sized ZnO clad with calcined kaolin by hydrolysis-precipitation method， a complex anti-ultraviolet inorganic materials was made. The ultraviolet light absorbance of composite materials on the wave length of 325， 350， 375， 400 nm were measured by ultraviolet spectrophotometer. The results showed that the reaction temperature， covering amount of， time of modification， adding speed of modifier， pulp density and calcining temperature had important influence on the ultraviolet absorption performance of the nano-sized ZnO-calcined kaolin composite powder. When the coating amount of ZnO was 8%， reaction temperature was 90 ℃， time of modification was 10 min， adding rate of modifier was 3 mL/min， m （H2O） ∶m （calcined kaolin） = 10∶1 in pulp ， calcining temperature was 400 ℃ ，the performance of ultraviolet absorption of the nano-sized ZnO-calcined kaolin composite materials was better.
Keywords：nano-sized zinc oxide； calcined kaolin； anti- ultraviolet material
