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Inorganic passivation material, method for forming the same, and inorganic passivation protective film produced therefrom

A protective film and inorganic technology, applied in the direction of anti-corrosion coatings, coatings, metal material coating technology, etc., can solve the problems of insufficient weather resistance and heat resistance, and achieve good heat resistance, good adhesion and compactness, The effect of high corrosion resistance

Active Publication Date: 2015-07-01
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common alternative is to use organic resins to mix inorganic materials. Due to the need to rely on a large amount of organic resins to maintain good film-forming properties, the weather resistance and heat resistance are insufficient.

Method used

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  • Inorganic passivation material, method for forming the same, and inorganic passivation protective film produced therefrom
  • Inorganic passivation material, method for forming the same, and inorganic passivation protective film produced therefrom
  • Inorganic passivation material, method for forming the same, and inorganic passivation protective film produced therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix tetraethoxysilane (TEOS), methyltriethylsilane (MTES), and epoxypropyltriethoxysilane (3-glycidoxypropyltrimethoxysilane; GPTMS) uniformly according to the ratio in Table 3, and stir at room temperature for 10 minutes Finally, water and 0.1N hydrochloric acid were added according to the ratio in Table 3, and then the sol-gel (sol-gel) reaction was carried out at room temperature for 16 hours, then the temperature was raised to 60°C, and the reaction was continued for 8 hours. An inorganic resin material with a partial network structure. Then add isopropyl alcohol (IPA), butyl phosphate titanoxane (Titanium, Bu phosphate Et alc.iso-Pr alc.Complexes; TBEP) (CAS NO.109037 -78-7) and uniformly mixed, stirred and reacted at room temperature for 16 hours, an inorganic passivation coating was formed.

Embodiment 2

[0049] The manufacturing process is the same as in Example 1, except that butyl titanoxane phosphate (TBEP) is replaced by diethylphosphatoethyl triethoxysilane (PHS).

[0050] The inorganic passivation coating formed in Examples 1-2 was further heated up to 800-C with a thermal gravimetric analysis (TGA) to analyze the inorganic content (Char yield) of the inorganic passivation coating. In addition, film formation evaluation was performed. After drying for 5 minutes, drop a drop of water on the test piece, wipe it off after 1 minute, and observe whether there are traces. If there is no, it is ο, indicating that the coating can form a film and dry completely.

[0051] The inorganic passivation coatings of Examples 1-2 were coated with a rod (bar-coating) on ​​a commercially available blank hot-dip galvanized steel sheet (Yehui Iron and Steel; Model SGC-CZSWX Z-12), and dried at 200°C for 5 Minutes to form an inorganic passivation protective film. The salt spray test is carrie...

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Abstract

A method for forming an inorganic passivation material is provided. The method includes mixing about 5 to 80 parts by weight of trialkoxysilane, about 10 to 80 parts by weight of tetraalkoxysilane, and about 1 to 30 parts by weight of catalyst to perform a reaction at pH of about 0.05 to 4 to form an inorganic resin material. The inorganic resin material is modified by phosphate ester to form an inorganic passivation material, wherein phosphate ester is about 0.1-10 parts by weight based on 100 parts by weight of the inorganic resin material. An inorganic passivation material and a passivation protective film produced therefrom are also provided.

Description

technical field [0001] The present disclosure relates to an inorganic passivation coating and a forming method thereof, and an inorganic passivation protection film formed from the inorganic passivation coating, and in particular to an inorganic passivation protection film for metal surface treatment. Background technique [0002] Hexavalent chromium has long been used as a passivation film on the surface of galvanized steel sheets or aluminum alloys. After the European Union's environmental protection directives such as the Waste Electronics and Electrical Equipment (WEEE) "was launched, countries such as the United States, China, and Japan also began to restrict the use of hexavalent chromium after 2006. At present, the common alternative is to use organic resins to mix inorganic materials. Due to the need to rely on a large amount of organic resins to maintain good film-forming properties, the weather resistance and heat resistance are insufficient. [0003] In addition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D5/08C09D7/12C23C22/48
CPCC09D183/04C08G77/395C09D183/06C09D183/08C08G77/30C08K5/5406
Inventor 汤伟钲黄云珊游雅婷苏一哲沈永清黄元昌
Owner IND TECH RES INST
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