Aluminum alloy dyeing pretreatment agent and pretreatment method
A pre-dyeing treatment and aluminum alloy technology, which is applied in the field of aluminum alloys, can solve the problems of acid residue cleaning, low product yield, uneven dyeing, etc., and achieve the effects of reducing corrosion, preventing uneven dyeing, and uniform color
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Embodiment 1
[0023] A pretreatment agent for aluminum alloy dyeing, comprising the following raw materials in parts by weight: 28 parts of citric acid, 8 parts of salicylic acid, 4 parts of sodium citrate, 3 parts of potassium sodium tartrate, 1 part of surfactant and 1.5 parts of functional auxiliary agent .
[0024] Further, the surfactant is composed of sodium monoglyceride disulfate and sodium lauryl sulfate in a weight ratio of 1:2.
[0025] Further, each part of the functional auxiliary agent includes the following raw materials in parts by weight: 8 parts of polyvinyl alcohol, 3 parts of sodium acetate, 6 parts of glycerin, and 4 parts of polydimethylsiloxane.
[0026] The aluminum alloy dyeing pretreatment method adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:
[0027] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;
[0028] (2) The pretreated aluminum alloy ...
Embodiment 2
[0033] A pretreatment agent for aluminum alloy dyeing, comprising the following raw materials in parts by weight: 25 parts of citric acid, 6 parts of salicylic acid, 3 parts of sodium citrate, 2 parts of potassium sodium tartrate, 0.5 parts of surfactant and 1 part of functional auxiliary agent .
[0034] Further, the surfactant sodium lauryl sulfate and diisooctyl sodium sulfosuccinate are composed in a weight ratio of 1:2.
[0035] Further, each part of the functional auxiliary agent includes the following raw materials in parts by weight: 8 parts of polyvinyl alcohol, 3 parts of sodium acetate, 6 parts of glycerin, and 4 parts of polydimethylsiloxane.
[0036] The aluminum alloy dyeing pretreatment method adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:
[0037] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;
[0038] (2) The pretreated aluminum alloy ...
Embodiment 3
[0043] A pretreatment agent for aluminum alloy dyeing, comprising the following raw materials in parts by weight: 25-30 parts of citric acid, 12 parts of salicylic acid, 5 parts of sodium citrate, 4 parts of potassium sodium tartrate, 1.5 parts of surfactant and functional auxiliary agent 2 servings.
[0044] Further, the surfactant is composed of sodium monoglyceride disulfate and sodium dioctyl sulfosuccinate in a weight ratio of 1:2.
[0045] Further, each part of the functional auxiliary agent includes the following raw materials in parts by weight: 10 parts of polyvinyl alcohol, 4 parts of sodium acetate, 8 parts of glycerin, and 5 parts of polydimethylsiloxane.
[0046] The aluminum alloy dyeing pretreatment method adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:
[0047] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;
[0048] (2) The pretreated al...
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