CN104099596A - Surface treating agent for milk white aluminum alloy - Google Patents

Abstract

The invention discloses surface treating agent for milk white aluminum alloy. The surface treating agent comprises the following raw materials in parts by weight: 0.9-1.2 parts of kaolin, 1-2.4 parts of xanthic acid, 0.4-0.6 part of diethylene glycol dibenzoate, 0.1-0.2 part of antimonous oxide, 0.2-1 part of N, N-dinitrosopentamethylene tetraamine, 1-3 parts of phthalic anhydride, 1-2.3 parts of sodium lignin sulfonate, 0.4-1 part of vinyl bis-stearamide, 4-6.1 parts of sodium fluosilicate, 2-4 parts of coalescing agent, 14-20 parts of silane coupling agent KH560, and 110-130 parts of de-ionized water. The surface treating agent can form a milk white film on the surface of the aluminum alloy; the coating film has good stability and strong acid/alkali and heat resistance; and the added coalescing agent can preferably improve the surface tension so as to enhance the cohesiveness to a metal substrate.

Description

A kind of oyster white 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 oyster white 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, by electrochemical method, in aluminum alloy surface, form conversion film, 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 the heavy metal ion such as chromium and sub-oyster white, 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, be considered to be expected to replace phosphate conversion processing 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 oyster white aluminum alloy surface treatment agent.

The present invention is achieved by the following technical solutions:

An oyster white aluminum alloy surface treatment agent, it is comprised of the raw material of following weight parts:

White bole 0.9-1.2, xanthogenic acid 1-2.4, diethylene glycol dibenzoate 0.4-0.6, antimonous oxide 0.1-0.2, N, N-dinitrosopentamethylene tetramine 0.2-1, Tetra hydro Phthalic anhydride 1-3, sodium lignosulfonate 1-2.3, vinyl two stearic amide 0.4-1, Sodium Silicofluoride 4-6.1, film coalescence aid 2-4, silane coupling agent KH560 14-20, deionized water 110-130;

Described film coalescence aid is comprised 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 ℃, 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 ℃, 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 each raw material after above-mentioned processing, 200-300 rev/min of dispersed with stirring 10-20 minute, obtains described film coalescence aid.

A preparation method for oyster white aluminum alloy surface treatment agent, is characterized in that comprising the following steps:

White bole is mixed with antimonous oxide, after stirring, add xanthogenic acid, be uniformly mixed 1-2 minute at 60-80 ℃;

Sodium lignosulfonate, the two stearic amides of vinyl, Sodium Silicofluoride are mixed, after stirring, add diethylene glycol dibenzoate, after stirring, join in deionized water 60-100 rev/min of dispersed with stirring 2-5 minute;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and 200-300 rev/min of dispersed with stirring 1-2 hour, obtains described oyster white aluminum alloy surface treatment agent.

Advantage of the present invention is:

Surface treatment agent of the present invention can form oyster white film in aluminum alloy surface, the good stability that this is filmed, and acid and alkali-resistance, thermotolerance are strong, and the film coalescence aid adding can well improve surface tension, strengthens the cohesiveness to metal base.

Embodiment

Embodiment 1

An oyster white aluminum alloy surface treatment agent, it is comprised of the raw material of following weight parts:

White bole 1.2, xanthogenic acid 2.4, diethylene glycol dibenzoate 0.6, antimonous oxide 0.2, N, N-dinitrosopentamethylene tetramine 0.2, Tetra hydro Phthalic anhydride 1, sodium lignosulfonate 2.3, the two stearic amides 0.4 of vinyl, Sodium Silicofluoride 6.1, film coalescence aid 4, silane coupling agent KH560 20, deionized water 130;

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

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

Octyl group isothiazolinone is joined in clorafin 52, at 60 ℃, 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 the 20-30% of above-mentioned deionized water weight, at 30 ℃, 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 each raw material after above-mentioned processing, 300 revs/min of dispersed with stirring 10 minutes, obtain described film coalescence aid.

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

White bole is mixed with antimonous oxide, after stirring, add xanthogenic acid, be uniformly mixed 1-2 minute at 80 ℃;

The two stearic amides of sodium lignosulfonate, vinyl, Sodium Silicofluoride are mixed, after stirring, add diethylene glycol dibenzoate, after stirring, join in deionized water, 100 revs/min of dispersed with stirring 5 minutes;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and 300 revs/min of dispersed with stirring 2 hours, obtain described oyster white 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 ℃, 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, without rust staining, occurs;

Acid resistance:

This sheet material is sprayed to experiment with the 0.05mol/l sulfuric acid that temperature is 23 ℃, 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 ℃, 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. an oyster white aluminum alloy surface treatment agent, is characterized in that what it was comprised of the raw material of following weight parts:

White bole 0.9-1.2, xanthogenic acid 1-2.4, diethylene glycol dibenzoate 0.4-0.6, antimonous oxide 0.1-0.2, N, N-dinitrosopentamethylene tetramine 0.2-1, Tetra hydro Phthalic anhydride 1-3, sodium lignosulfonate 1-2.3, vinyl two stearic amide 0.4-1, Sodium Silicofluoride 4-6.1, film coalescence aid 2-4, silane coupling agent KH560 14-20, deionized water 110-130;

Described film coalescence aid is comprised 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 ℃, 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 ℃, 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 each raw material after above-mentioned processing, 200-300 rev/min of dispersed with stirring 10-20 minute, obtains described film coalescence aid.

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

White bole is mixed with antimonous oxide, after stirring, add xanthogenic acid, be uniformly mixed 1-2 minute at 60-80 ℃;

Sodium lignosulfonate, the two stearic amides of vinyl, Sodium Silicofluoride are mixed, after stirring, add diethylene glycol dibenzoate, after stirring, join in deionized water 60-100 rev/min of dispersed with stirring 2-5 minute;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and 200-300 rev/min of dispersed with stirring 1-2 hour, obtains described oyster white aluminum alloy surface treatment agent.