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Chemcial Industry and Engineering 2007, Vol. 24 Issue (1) :36-39    DOI:
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Coating Technology of Super-Weatherable TiO_2 Pigment
LI Wen-sheng~(1,2),ZHANG Tian-yong~1,CHEN Gui-shan~2(1.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;2.CNNC Hua Yuan Titanium Dioxide Co.,Ltd.,Lanzhou 732850,Gansu Province,China)
(1,2),ZHANG Tian-yong~1,CHEN Gui-shan~2(1.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;2.CNNC Hua Yuan Titanium Dioxide Co.,Ltd.,Lanzhou 732850,Gansu Province,China

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Abstract Weatherability is one of important capabilities for TiO_2 pigment.The super-weatherability of TiO_2 pigment is obtained by a new fine SiO_2 coating preparation method.The effects such as adding method and adding amount of coating agent,temperature and pH,etc,on super-weatherability were analysed.The mechanism of fine SiO_2 coating was discussed and acid solubility was adopted to identify coating effect.The TiO_2 pigment with super-weatherability was produced under the condition that adding method is parallel-current,adding amound of coating agent is 3.5%,t=90 ��,pH=9.5��10,Al_2O_3 is used as coating material.The result of anti-ageing experiment is above(6 000) h.
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Received 2007-01-15; published 2007-01-15
Cite this article:   
LI Wen-sheng~.Coating Technology of Super-Weatherable TiO_2 Pigment[J]  Chemcial Industry and Engineering, 2007,V24(1): 36-39
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