CN104099006A - Surface treating agent for stabilizing aluminium alloy - Google Patents

Abstract

The invention discloses a surface treating agent for stabilizing aluminium alloy. The surface treating agent is prepared from the following raw materials in parts by weight: 0.9-1.2 parts of kesso oil, 1.2-2 parts of ammonium tungstate, 2.3-4 parts of etidronic acid, 0.1-0.2 part of niobium carbide, 0.1-0.2 part of aluminium acetylacetonate, 0.7-1.4 part of sodium benzoate, 0.01-0.04 part of chisel tool steel powder, 3-4 parts of absolute ethyl alcohol, 1.2-3 parts of sodium fluosilicate, 2.4-3 parts of polyethylene acid, 0.2-0.4 part of potassium hydrogen sulfate, 2.4-3 parts of chitosan, 1-3 parts of a coalescing agent, 15-20 parts of a silane coupling agent KH 560 and 120-140 parts of deionized water. According to the surface treating agent, all added raw materials are nontoxic and no side effect and pollution, the degradation is easy, the use is safe and convenient, the surface treating agent is environmental-friendly, the formed coating membrane is high in stability, good in adhesive attraction and high in acid and alkali resistance.

Description

A kind of aluminum alloy surface treatment agent of stablizing

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Technical field

The present invention relates generally to field of surface treatment, relates in particular to a kind of aluminum alloy surface treatment agent of stablizing.

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 corrosion resistance nature 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 nitrite 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 aluminum alloy surface treatment agent of stablizing.

The present invention is achieved by the following technical solutions:

One is stablized aluminum alloy surface treatment agent, and it is made up of the raw material of following weight parts:

Valerian oil 0.9-1.2, ammonium tungstate 1.2-2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2.3-4, niobium carbide 0.1-0.2, aluminium acetylacetonate 0.1-0.2, Sodium Benzoate 0.7-1.4, instrument comminuted steel shot 0.01-0.04, dehydrated alcohol 3-4, Sodium Silicofluoride 1.2-3, acid polyethylene 2.4-3, sal enixum 0.2-0.4, chitosan 2.4-3, film coalescence aid 1-3, silane coupling agent KH560 15-20, deionized water 120-140;

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

Protanal Ester SD-LB 20-30, urea 2-3, Sodium Citrate 1-2, octyl group isothiazolinone 0.8-1, clorafin 52 2-3, Span-80 0.5-1, benzyltriethylammoinium chloride 1-2, deionized water 100-120;

Octyl group isothiazolinone is joined in clorafin 52, at 50-60 DEG C, be uniformly mixed 3-4 minute, add 20-30%, the Span-80 of above-mentioned deionized water weight, 100-200 rev/min of dispersed with stirring 6-10 minute;

Urea is mixed with Sodium Citrate, add the 20-30% of above-mentioned deionized water weight, at 25-30 DEG C, be uniformly mixed 3-5 minute, add benzyltriethylammoinium chloride, 100-200 rev/min of dispersed with stirring 5-10 minute;

Protanal Ester SD-LB is joined in remaining deionized water, add above-mentioned each raw material after treatment, 200-300 rev/min of dispersed with stirring 10-20 minute, obtains described film coalescence aid.

A preparation method for stable aluminum alloy surface treatment agent, comprises the following steps:

Aluminium acetylacetonate is joined in dehydrated alcohol, stirring and dissolving, rising temperature is 40-50 DEG C, adds ammonium tungstate, niobium carbide, insulated and stirred is disperseed 2-4 minute;

Instrument comminuted steel shot is mixed with chitosan, Sodium Silicofluoride, add the 30-50% of above-mentioned deionized water weight, after stirring, add 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 60-100 rev/min of dispersed with stirring 6-10 minute;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 200-300 rev/min of dispersed with stirring 1-2 hour, obtains described stable aluminum alloy surface treatment agent.

Advantage of the present invention is:

The each advantages of nontoxic raw materials side effect adding in surface treatment agent of the present invention, pollution-free, easily degraded, safe and convenient to use, environmentally friendly, the painting membrane stability of formation is strong, and sticking power is good, and resistance to acids and bases is strong.

Embodiment

Embodiment 1

One is stablized aluminum alloy surface treatment agent, and it is made up of the raw material of following weight parts:

Valerian oil 1.2, ammonium tungstate 1.2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2.3, niobium carbide 0.2, aluminium acetylacetonate 0.2, Sodium Benzoate 1.4, instrument comminuted steel shot 0.04, dehydrated alcohol 3, Sodium Silicofluoride 1.2, acid polyethylene 2.4, sal enixum 0.4, chitosan 2.4, film coalescence aid 3, silane coupling agent KH560 20, deionized water 140;

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

Protanal Ester SD-LB 30, urea 3, Sodium Citrate 2, octyl group isothiazolinone 0.8, clorafin 52 2, Span-80 0.5, benzyltriethylammoinium chloride 2, deionized water 120;

Octyl group isothiazolinone is joined in clorafin 52, at 60 DEG C, is uniformly mixed 4 minutes, add above-mentioned deionized water weight 30%, Span-80,200 revs/min of dispersed with stirring 10 minutes;

Urea is mixed with Sodium Citrate, add 30% of above-mentioned deionized water weight, at 30 DEG C, be uniformly mixed 3-5 minute, add benzyltriethylammoinium chloride, 200 revs/min of dispersed with stirring 10 minutes;

Protanal Ester SD-LB is joined in remaining deionized water, add above-mentioned each raw material after treatment, 300 revs/min of dispersed with stirring 20 minutes, obtain described film coalescence aid.

A preparation method for stable aluminum alloy surface treatment agent, comprises the following steps:

Aluminium acetylacetonate is joined in dehydrated alcohol, stirring and dissolving, rising temperature is 50 DEG C, adds ammonium tungstate, niobium carbide, insulated and stirred is disperseed 4 minutes;

Instrument comminuted steel shot is mixed with chitosan, Sodium Silicofluoride, add 50% of above-mentioned deionized water weight, after stirring, add 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 100 revs/min of dispersed with stirring 10 minutes;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 300 revs/min of dispersed with stirring 2 hours, obtain described stable 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 stable aluminum alloy surface treatment agent, is characterized in that what it was made up of the raw material of following weight parts:

Valerian oil 0.9-1.2, ammonium tungstate 1.2-2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2.3-4, niobium carbide 0.1-0.2, aluminium acetylacetonate 0.1-0.2, Sodium Benzoate 0.7-1.4, instrument comminuted steel shot 0.01-0.04, dehydrated alcohol 3-4, Sodium Silicofluoride 1.2-3, acid polyethylene 2.4-3, sal enixum 0.2-0.4, chitosan 2.4-3, film coalescence aid 1-3, silane coupling agent KH560 15-20, deionized water 120-140;

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

Protanal Ester SD-LB 20-30, urea 2-3, Sodium Citrate 1-2, octyl group isothiazolinone 0.8-1, clorafin 52 2-3, Span-80 0.5-1, benzyltriethylammoinium chloride 1-2, deionized water 100-120;

Octyl group isothiazolinone is joined in clorafin 52, at 50-60 DEG C, be uniformly mixed 3-4 minute, add 20-30%, the Span-80 of above-mentioned deionized water weight, 100-200 rev/min of dispersed with stirring 6-10 minute;

Urea is mixed with Sodium Citrate, add the 20-30% of above-mentioned deionized water weight, at 25-30 DEG C, be uniformly mixed 3-5 minute, add benzyltriethylammoinium chloride, 100-200 rev/min of dispersed with stirring 5-10 minute;

Protanal Ester SD-LB is joined in remaining deionized water, add above-mentioned each raw material after treatment, 200-300 rev/min of dispersed with stirring 10-20 minute, obtains described film coalescence aid.

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

Aluminium acetylacetonate is joined in dehydrated alcohol, stirring and dissolving, rising temperature is 40-50 DEG C, adds ammonium tungstate, niobium carbide, insulated and stirred is disperseed 2-4 minute;

Instrument comminuted steel shot is mixed with chitosan, Sodium Silicofluoride, add the 30-50% of above-mentioned deionized water weight, after stirring, add 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 60-100 rev/min of dispersed with stirring 6-10 minute;

Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and 200-300 rev/min of dispersed with stirring 1-2 hour, obtains described stable aluminum alloy surface treatment agent.