CN104109466A - Long-lasting type aluminum alloy surface treating agent - Google Patents

Abstract

The invention discloses a long-lasting aluminum alloy surface treating agent, which is composed of the following raw materials in parts by weight: 0.2 to 0.5 part of sodium sulfaquinoxaline, 1 to 2 parts of tea saponin, 1 to 2 parts of N-(2-hydroxyethyl)ethylenediamine, 1 to 2 parts of sodium biisooctyl sulfosuccinate, 1.5 to 2 parts of acetic acid, 2 to 4 parts of urea, 0.6 to 1 part of copper sulfate, 0.4 to 1 part of algal polysaccharide, 1 to 1.5 parts of monoammonium phosphate, 2 to 3 parts of potassium chloride, 0.4 to 1 part of hydroxyl silicone oil, 0.1 to 0.2 part of ethylene carbonate, 0.1 to 0.4 part of antioxidant, 2 to 4 parts of film-forming auxiliary agent, 14 to 20 parts of silane coupling agent KH590, and 110 to 140 parts of deionized water. The added urea has a very good sustain-release effect, and the tea saponin and algal polysaccharide can strength the adhesive strength of coating, intensify the adhesive force on metal workpiece, and improve the protectiveness.

Description

A kind of long-acting persistent form aluminum alloy surface treatment agent

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Technical field

The present invention relates generally to field of surface treatment, relates in particular to a kind of long-acting persistent form aluminum alloy surface treatment agent.

Background technology

The surface treatment method of aluminium alloy has a lot, as Physical, chemical method, physico-chemical processes and synthetic method.Conventional method is anonizing now, form conversion film by electrochemical method in aluminum alloy surface, although this method can improve the long-acting persistent form performance of aluminium alloy, but the ability that it conforms, transform rete even not, easily come off, wear resisting property does not improve, and although traditional phosphate conversion and chromating process for treating surface can obtain good effect, but contain zinc in the waste liquid of discharging in treating processes, manganese, nickel, the carcinogenic substances such as heavy metal ion and sub-long-acting persistent form such as chromium, environmental pollution is very serious, and metallic surface silanization treatment technology is due to the material of hurm involved environment not, energy consumption in production process is low, technical applications is extensive, being considered to be expected to replace phosphate conversion processes and chromating processing, that recent development direction is protected separately in metallic surface.

Summary of the invention

The object of the invention is just to provide a kind of long-acting persistent form aluminum alloy surface treatment agent.

The present invention is achieved by the following technical solutions:

A kind of long-acting persistent form aluminum alloy surface treatment agent, it is made up of the raw material of following weight parts:

Sulfaquinoxaline sodium 0.2-0.5, tea saponin 1-2, N-(2-hydroxyethyl) quadrol 1-2, succinate sodium 2-ethylhexyl 1-2, acetic acid 1.5-2, urea 2-4, copper sulfate 0.6-1, Sargassum polysaccharides 0.4-1, monoammonium phosphate 1-1.5, Repone K 2-3, hydroxy silicon oil 0.4-1, NSC 11801 0.1-0.2, antioxidant 264 0.1-0.4, film coalescence aid 2-4, silane coupling agent KH590 14-20, deionized water 110-140;

Described film coalescence aid is made up of the raw material of following weight parts:

Acrylate and vinyl acetate emulsion 25-30, tea saponin 1-2, pyrrolidone hydroxy acid sodium 1-2, hydroxy silicon oil 0.1-0.3, trimethylene phosphonic 2-3, allyl polyglycol 0.7-1, Zinic stearas 0.3-0.4,1,2 dimethylimidazole 0.2-0.3, deionized water 80-90;

Pyrrolidone hydroxy acid sodium is joined in acrylate and vinyl acetate emulsion, add hydroxy silicon oil, 100-200 rev/min of dispersed with stirring 3-5 minute;

Tea saponin is mixed with allyl polyglycol, add the 40-60% of above-mentioned deionized water weight, at 60-70 DEG C, be uniformly mixed 6-10 minute, add Zinic stearas, 100-200 rev/min of dispersed with stirring 4-6 minute;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 400-600 rev/min of dispersed with stirring 20-30 minute, obtains described film coalescence aid.

A preparation method for long-acting persistent form aluminum alloy surface treatment agent, comprises the following steps:

Copper sulfate, monoammonium phosphate, Repone K are mixed, after stirring, add NSC 11801, be uniformly mixed, obtain Preblend;

Sulfaquinoxaline sodium, tea saponin are mixed, after stirring, add urea, at 60-70 DEG C, be uniformly mixed 2-3 minute, join in deionized water, after stirring, add silane coupling agent KH590, above-mentioned Preblend, 600-800 rev/min of dispersed with stirring 10-20 minute, mixes with the each raw material of residue, 800-1000 rev/min of dispersed with stirring 40-50 hour, obtains described long-acting persistent form aluminum alloy surface treatment agent.

Advantage of the present invention is:

The urea that surface treatment agent of the present invention adds has good slow release effect, and tea saponin and Sargassum polysaccharides etc. can strengthen the cohesive strength of film, strengthens the sticking power to metal works, improves protectiveness.

Embodiment

Embodiment 1

A kind of long-acting persistent form aluminum alloy surface treatment agent, it is made up of the raw material of following weight parts:

Sulfaquinoxaline sodium 0.5, tea saponin 2, N-(2-hydroxyethyl) quadrol 1, succinate sodium 2-ethylhexyl 1, acetic acid 1.5, urea 4, copper sulfate 0.6, Sargassum polysaccharides 0.4, monoammonium phosphate 1.5, Repone K 3, hydroxy silicon oil 0.4-1, NSC 11801 0.2, antioxidant 264 0.4, film coalescence aid 4, silane coupling agent KH590 20, deionized water 140;

Described film coalescence aid is made up of the raw material of following weight parts:

Acrylate and vinyl acetate emulsion 30, tea saponin 1, pyrrolidone hydroxy acid sodium 2, hydroxy silicon oil 0.3, trimethylene phosphonic 2, allyl polyglycol 0.7, Zinic stearas 0.4,1,2 dimethylimidazole 0.3, deionized water 80-90;

Pyrrolidone hydroxy acid sodium is joined in acrylate and vinyl acetate emulsion, add hydroxy silicon oil, 200 revs/min of dispersed with stirring 3 minutes;

Tea saponin is mixed with allyl polyglycol, add 60% of above-mentioned deionized water weight, at 70 DEG C, be uniformly mixed 10 minutes, add Zinic stearas, 200 revs/min of dispersed with stirring 4 minutes;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 600 revs/min of dispersed with stirring 30 minutes, obtain described film coalescence aid.

A preparation method for long-acting persistent form aluminum alloy surface treatment agent, comprises the following steps:

Copper sulfate, monoammonium phosphate, Repone K are mixed, after stirring, add NSC 11801, be uniformly mixed, obtain Preblend;

Sulfaquinoxaline sodium, tea saponin are mixed, after stirring, add urea, at 70 DEG C, be uniformly mixed 2 minutes, join in deionized water, after stirring, add silane coupling agent KH590, above-mentioned Preblend, 800 revs/min of dispersed with stirring 20 minutes, mix with the each raw material of residue, 1000 revs/min of dispersed with stirring 50 hours, obtain described long-acting persistent form aluminum alloy surface treatment agent.

Using method:

The Al alloy parts carrying out after degreasing, washing is placed in to surface treatment agent of the present invention and floods, working temperature 20-40 DEG C, working hour 0.5-1min.

Performance test:

Getting the aluminum alloy plate materials of surface treatment agent processing of the present invention tests, the specification of this sheet material is 80mm × 100mm × 4mm, by this sheet material lateral dissection, carry out spray test, agents useful for same is that concentration is 5% sodium chloride solution, test period 300 hours, measures the bubbling width forming in line of cut one side, and result bubbling width is 0;

Salt tolerance:

It is in 5% sodium chloride solution that this sheet material is immersed in to concentration, soaks 300 hours, and material surface is substantially unchanged, soaks 300 hours, occurs without rust staining;

Acid resistance:

This sheet material is sprayed to experiment with the 0.05mol/l sulfuric acid that temperature is 23 DEG C, and experimental period 20 hours, cleans with clear water, and indoor placement 2 hours, coating surface was unchanged, and nothing is bubbled, nothing comes off, nothing is damaged;

Stripper-resistance:

The paste that this plate surface is coated with to last layer 2-3mm, being put into temperature is 50 DEG C, and in the watertight chest that relative humidity is 90-96%, experimental period 24 hours, cleans with clear water after taking-up, and coating surface is without bubbling, without coming off, without damaged.

Claims (2)

1. a long-acting persistent form aluminum alloy surface treatment agent, is characterized in that what it was made up of the raw material of following weight parts:

Sulfaquinoxaline sodium 0.2-0.5, tea saponin 1-2, N-(2-hydroxyethyl) quadrol 1-2, succinate sodium 2-ethylhexyl 1-2, acetic acid 1.5-2, urea 2-4, copper sulfate 0.6-1, Sargassum polysaccharides 0.4-1, monoammonium phosphate 1-1.5, Repone K 2-3, hydroxy silicon oil 0.4-1, NSC 11801 0.1-0.2, antioxidant 264 0.1-0.4, film coalescence aid 2-4, silane coupling agent KH590 14-20, deionized water 110-140;

Described film coalescence aid is made up of the raw material of following weight parts:

Acrylate and vinyl acetate emulsion 25-30, tea saponin 1-2, pyrrolidone hydroxy acid sodium 1-2, hydroxy silicon oil 0.1-0.3, trimethylene phosphonic 2-3, allyl polyglycol 0.7-1, Zinic stearas 0.3-0.4,1,2 dimethylimidazole 0.2-0.3, deionized water 80-90;

Pyrrolidone hydroxy acid sodium is joined in acrylate and vinyl acetate emulsion, add hydroxy silicon oil, 100-200 rev/min of dispersed with stirring 3-5 minute;

Tea saponin is mixed with allyl polyglycol, add the 40-60% of above-mentioned deionized water weight, at 60-70 DEG C, be uniformly mixed 6-10 minute, add Zinic stearas, 100-200 rev/min of dispersed with stirring 4-6 minute;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 400-600 rev/min of dispersed with stirring 20-30 minute, obtains described film coalescence aid.

2. a preparation method for long-acting persistent form aluminum alloy surface treatment agent as claimed in claim 1, is characterized in that comprising the following steps:

Copper sulfate, monoammonium phosphate, Repone K are mixed, after stirring, add NSC 11801, be uniformly mixed, obtain Preblend;

Sulfaquinoxaline sodium, tea saponin are mixed, after stirring, add urea, at 60-70 DEG C, be uniformly mixed 2-3 minute, join in deionized water, after stirring, add silane coupling agent KH590, above-mentioned Preblend, 600-800 rev/min of dispersed with stirring 10-20 minute, mixes with the each raw material of residue, 800-1000 rev/min of dispersed with stirring 40-50 hour, obtains described long-acting persistent form aluminum alloy surface treatment agent.