Self-repairing non-phosphorus ceramic processing liquid for galvanized plate and ceramic process thereof
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A technology for treating liquid and galvanized sheet, applied in the direction of metal material coating process, etc., can solve the problems of low corrosion resistance, the film layer does not have self-healing ability, etc., achieves low processing temperature, solves the problem of phosphorus pollution and raw material cost. low effect
Inactive Publication Date: 2013-03-13
ANHUI WEILAI SURFACE TECH
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However, due to the lack of self-healing ability of the film layer, the corrosion resistance is relatively low, and the salt spray test only passed 72h
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Embodiment 1
[0039] A kind of self-repairing phosphorus-free vitrification treatment solution for galvanized sheet comprises following components (by weight percentage):
[0040] h 2 TiF 6 0.1%, LaCl 3 0.1%, CTAC 0.5%, ZnO sol 0.01%, N-aminoethyl-γ-aminopropyltriethoxysilane 0.1%, H 3 BO 3 0.1%, the balance is water.
[0041] The optimum pretreatment temperature of the treatment solution is 25°C at room temperature, and the optimum treatment temperature after vitrification is 80°C.
Embodiment 2
[0043] A kind of self-repairing phosphorus-free vitrification treatment solution for galvanized sheet comprises following components (by mass percentage):
[0044] h 2 ZrF 6 0.5%, LaCl 3 0.1%, CTAC 1.0%, ZnO sol 0.5%, γ-glycidyl etheroxypropyl trimethoxysilane 0.01%, NaMoO 4 0.01%, the balance is water.
[0045] The optimum pretreatment temperature of the treatment solution is 25°C at room temperature, and the optimum treatment temperature after vitrification is 100°C.
Embodiment 3
[0047] A kind of self-repairing phosphorus-free vitrification treatment solution for galvanized sheet comprises following components (by mass percentage):
[0048] h 2 SiF 6 0.3%, LaCl 3 0.1%, SDS 2.0%, ZnO sol 1.0%, vinyltriethoxysilane 0.05%, H 3 BO 3 0.2%, the balance is water.
[0049] The optimum pretreatment temperature of the treatment liquid is 25°C at room temperature, and the optimum treatment temperature after vitrification is 110°C.
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Abstract
The invention discloses a self-repairing non-phosphorus ceramic processing liquid for galvanized plate and a ceramic process thereof. The processing liquid comprises the following components, by weight: 0.1-8% of inorganic fluorine-bearing acid, 0.01-5% of rare earth compounds, 0.5-5% of a template agent, 0.01-1% of an inorganic sol, 0.01-5% of an interfacial modifier, 0.01-5% of an inhibitor and the balance of water. The ceramic processing liquid provided by the invention can automatically assemble a layer of dense amorphous membrane on the galvanized plate surface through the template agent; breakage position on the membrane has self-repair ability, so that corrosion resistance and adhesion of the galvanized plate are effectively improved, and superior to those of a traditional phosphating film. The invention has the advantages of low cost, simple process, little pollution to the environment, high economic benefit and social benefit.
Description
technical field [0001] The invention belongs to the technical field of phosphorus-free vitrification of galvanized sheets, and in particular relates to a self-repairing non-phosphorous vitrification treatment liquid for galvanized sheets. Background technique [0002] Phosphating is a common pretreatment technology for galvanized sheets, and the phosphating sheets are widely used in home appliances and other general fields after coating. However, the industrial wastewater discharged by the phosphating process contains a large amount of phosphorus elements, which will cause eutrophication of the water body. The phosphating solution contains heavy metal ions and nitrite, which has a strong carcinogenic effect. Therefore, the discharge of phosphorus-containing waste liquid is receiving increasing attention. The stricter the control, the application is greatly limited. To solve such problems, the development and adoption of environmentally friendly phosphorus-free ceramic techn...
Claims
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