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Aluminum alloy corrosion inhibition curing film forming liquid and preparation method thereof

A technology of aluminum alloy and cured film, which is applied in the field of aluminum alloy corrosion inhibition cured film forming liquid and its preparation, can solve the problems of metal substrate corrosion, weak erosion resistance of corrosive medium, peeling off of film layer, etc., to achieve enhanced bonding force, Good protective effect and improved dispersion effect

Inactive Publication Date: 2016-01-27
安徽岳塑汽车工业股份有限公司
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Problems solved by technology

However, when the silane film itself is porous and has weak corrosion resistance to corrosive media, in a corrosive environment, Cl-, etc. are particularly prone to corrosion along these defects. Peel off, so that once the silane film is damaged, it cannot be self-repaired, and it is easy to cause corrosion of the metal substrate

Method used

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Embodiment Construction

[0026] An aluminum alloy corrosion-inhibiting solidified film forming liquid, which is composed of the following parts by weight of raw materials:

[0027] Bis(γtriethoxysilylpropyl) tetrasulfide 100, butyl titanate 10, multi-walled carbon nanotubes 3, cerium nitrate 0.8, trimethylolpropane 0.3, polytetrafluoroethylene 0.08, polyvinyl alcohol Formal 3.5, allyl thiourea 1, methyl p-hydroxybenzoate 0.3, hydrogenated castor oil 2.

[0028] A method for preparing the aluminum alloy corrosion-inhibiting solidified film forming liquid includes the following steps:

[0029] (1) Mix the above-mentioned bis(γtriethoxysilylpropyl) tetrasulfide with deionized water and absolute ethanol in a volume ratio of 1:3:90, ultrasonically disperse for 10 minutes, add glacial acetic acid, and adjust the pH 4, keep for 46 hours at 20°C to obtain the coupling agent solution;

[0030] (2) Add the above-mentioned polyvinyl formal into 6 times the amount of acetone, stir to dissolve, add hydrogenated castor oi...

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Abstract

The invention discloses aluminum alloy corrosion inhibition curing film forming liquid. The aluminum alloy corrosion inhibition curing film forming liquid is prepared from, by weight, 100-110 parts of bis(gamma-triethoxy silicon propyl) tetrasulfide, 10-12 parts of butyl titanate, 3-5 parts of multi-walled carbon nanotubes, 0.8-1 part of cerium nitrate, 0.3-1 part of trimethylolpropane, 0.08-0.1 part of polytetrafluoroethylene, 3.5-4 parts of polyvinyl formal, 1-2 parts of allylthiourea, 0.3-1 part methyl 4-hydroxybenzoate of and 2-3 parts of hydrogenated castor oil. Allylthiourea, methyl 4-hydroxybenzoate and the like which are added in a curing film have a very good corrosion inhibition effect, and corrosion losses can be reduced.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy surface treatment, in particular to an aluminum alloy corrosion-inhibiting solidified film forming liquid and a preparation method thereof. Background technique [0002] Silane began to be used in the field of metal anti-corrosion due to its unique molecular structure, non-toxic and environmentally friendly, low cost, and good compatibility. After hydrolysis, the silane can be closely combined with the metal matrix to form a dense film on the surface, which has a good protective effect on the metal. However, when the silane film itself is porous, its resistance to corrosion by corrosive media is relatively weak. In a corrosive environment, Cl- etc. are particularly prone to corrosion along these defects. The accumulation of corrosion products at the interface will cause the interface to form a stress zone and cause the film Peel off, so that once the silane film is damaged, it cannot be self-re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/173
Inventor 储诚钢
Owner 安徽岳塑汽车工业股份有限公司
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