CN104099595A - Surface treating agent for wipe resistant aluminum alloy - Google Patents

Abstract

The invention discloses surface treating agent for wipe resistant aluminum alloy. The surface treating agent comprises the following raw materials in parts by weight: 1-1.7 parts of trichlorotrifluoroethane, 0.8-1 part of polydimethylsiloxane, 1-2 parts of sodium pyrophosphate, 0.4-1 part of molybdenum oxide, 0.1-0.3 part of precipitate barium sulfate, 0.4-2 parts of potassium silicate, 1-2 parts of sodium algnate, 0.2-0.4 part of 8-hydroxyquinoline, 0.7-1 part of zinc sulfate, 0.2-0.3 part of expanded perlite powder, 2-3 parts of ricinoleic acid, 3-4 parts of glycol, 1-3 parts of coalescing agent, 8-10 parts of 3-amino propyl trimethoxy silane, 8-10 parts of silane coupling agent KH550, and 120-140 parts of de-ionized water. The expanded perlite powder, the precipitate barium sulfate and the potassium silicate are added in the surface treating agent, so that a prepared coating film has high surface strength, strong wipe resistance and easy cleanness, and the protectiveness to an aluminum alloy workpiece is improved.

Description

A kind of resistance to wiping 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 resistance to wiping 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 resistance to wiping properties 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 the heavy metal ion such as chromium and Ya Nai wiping, 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 resistance to wiping aluminum alloy surface treatment agent.

The present invention is achieved by the following technical solutions:

A kind of resistance to wiping aluminum alloy surface treatment agent, it is made up of the raw material of following weight parts:

Freon 113 1-1.7, polydimethylsiloxane 0.8-1, trisodium phosphate 1-2, molybdenum oxide 0.4-1, process white 0.1-0.3, potassium silicate 0.4-2, sodium alginate 1-2, oxine 0.2-0.4, zinc sulfate 0.7-1, swelling perlite powder 0.2-0.3, ricinolic acid 2-3, ethylene glycol 3-4, film coalescence aid 1-3,3-TSL 8330 8-10, Silane coupling agent KH550 8-10, deionized water 120-140;

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 resistance to wiping aluminum alloy surface treatment agent, comprises the following steps:

Molybdenum oxide, process white, potassium silicate, swelling perlite powder are mixed, after ball milling is even, add polydimethylsiloxane, ethylene glycol, after stirring, add above-mentioned deionized water weight 20-30%, 100-120 rev/min of dispersed with stirring 10-14 minute, add the each raw material of residue, 400-600 rev/min of dispersed with stirring 1-2 hour, obtains described resistance to wiping aluminum alloy surface treatment agent.

Advantage of the present invention is:

Swelling perlite powder that surface treatment agent of the present invention adds, process white, potassium silicate etc., make the film coated surface intensity that forms high, and wipe resistance is strong, easy to clean, has improved the protectiveness to Al alloy parts.

Embodiment

Embodiment 1

A kind of resistance to wiping aluminum alloy surface treatment agent, it is made up of the raw material of following weight parts:

Freon 113 1.7, polydimethylsiloxane 0.8, trisodium phosphate 1, molybdenum oxide 0.4, process white 0.3, potassium silicate 0.4, sodium alginate 2, oxine 0.4, zinc sulfate 0.7, swelling perlite powder 0.3, ricinolic acid 3, ethylene glycol 4, film coalescence aid 3,3-TSL 8330 10, Silane coupling agent KH550 10, 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 2, pyrrolidone hydroxy acid sodium 2, hydroxy silicon oil 0.3, trimethylene phosphonic 2, allyl polyglycol 0.7, Zinic stearas 0.3,1,2 dimethylimidazole 0.3, deionized water 90;

Pyrrolidone hydroxy acid sodium is joined in acrylate and vinyl acetate emulsion, add hydroxy silicon oil, 200 revs/min of dispersed with stirring 5 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, 100 revs/min of dispersed with stirring 6 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 20 minutes, obtain described film coalescence aid.

A preparation method for resistance to wiping aluminum alloy surface treatment agent, comprises the following steps:

Molybdenum oxide, process white, potassium silicate, swelling perlite powder are mixed, after ball milling is even, add polydimethylsiloxane, ethylene glycol, after stirring, add above-mentioned deionized water weight 30%, 120 revs/min of dispersed with stirring 10 minutes, add the each raw material of residue, 600 revs/min of dispersed with stirring 2 hours, obtain described resistance to wiping 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 resistance to wiping aluminum alloy surface treatment agent, is characterized in that what it was made up of the raw material of following weight parts:

Freon 113 1-1.7, polydimethylsiloxane 0.8-1, trisodium phosphate 1-2, molybdenum oxide 0.4-1, process white 0.1-0.3, potassium silicate 0.4-2, sodium alginate 1-2, oxine 0.2-0.4, zinc sulfate 0.7-1, swelling perlite powder 0.2-0.3, ricinolic acid 2-3, ethylene glycol 3-4, film coalescence aid 1-3,3-TSL 8330 8-10, Silane coupling agent KH550 8-10, deionized water 120-140;

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 resistance to wiping aluminum alloy surface treatment agent as claimed in claim 1, is characterized in that comprising the following steps:

Molybdenum oxide, process white, potassium silicate, swelling perlite powder are mixed, after ball milling is even, add polydimethylsiloxane, ethylene glycol, after stirring, add above-mentioned deionized water weight 20-30%, 100-120 rev/min of dispersed with stirring 10-14 minute, add the each raw material of residue, 400-600 rev/min of dispersed with stirring 1-2 hour, obtains described resistance to wiping aluminum alloy surface treatment agent.