CN104109851A - Antirust aluminum alloy surface treating agent - Google Patents

Abstract

The invention discloses an antirust aluminum alloy surface treating agent. The agent is composed of an A component and a B component; wherein the A component is composed of the following raw materials in parts by weight: 1 to 1.2 parts of tara gum, 0.3 to 1 part of hydroxyethyl methacrylate phosphate, 1 to 2 parts of chitosan, 2 to 3 parts of butynediol, 2 to 3 parts of 2-ethylhexoic acid, 5 to 6 parts of silane coupling agent KH550, and 50 to 60 parts of deionized water; and the B component is composed of the following raw materials in parts by weight: 1 to 2 parts of cetyltrimethyl ammonium chloride, 2 to 3 parts of succinic anhydride, 0.4 to 1 part of sodium monofluorophosphate, 1 to 2 parts of dipropylene glycol, 0.4 to 1 part of plant ash, 1 to 2 parts of polyurethane, 2 to 4 parts of film-forming auxiliary agent, 6 to 8 parts of 3-aminopropyltriethoxysilane, and 50 to 60 parts of deionized water. The surface treating agent has a very good antirust effect, can protect workpiece from rust and corrosion in severe environment of high acidity and humidity for a long term, and is capable of forming a surface membrane which has the advantages of good surface resistance and long-lasting protectiveness.

Description

A kind of rust-proofing 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 rust-proofing 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 rust-resisting property 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-rust-proofing 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 rust-proofing aluminum alloy surface treatment agent.

The present invention is achieved by the following technical solutions:

A kind of rust-proofing aluminum alloy surface treatment agent, it is made up of A, B two components, and described A component is made up of the raw material of following weight parts:

Tara gum 1-1.2, hydroxyethyl meth acrylate phosphoesterase 30 .3-1, chitosan 1-2, butynediol 2-3,2 ethyl hexanoic acid 2-3, Silane coupling agent KH550 5-6, deionized water 50-60;

Described B component is made up of the raw material of following weight parts:

Palmityl trimethyl ammonium chloride 1-2, Succinic anhydried 2-3, sodium monoflurophosphate 0.4-1, dipropylene glycol 1-2, plant ash 0.4-1, polyurethane(s) 1-2, film coalescence aid 2-4,3-TSL 8330 6-8, deionized water 50-60;

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

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

Protanal Ester SD-LB 20-30, Sodium.alpha.-hydroxypropionate 1-2, diacetone-acryloamide(DAA) 0.1-0.2, polymaleic anhydride 2-3, chitosan 1-2, aminopropyl triethoxysilane 0.5-1, alkenyl succinic anhydride 0.2-0.4, deionized water 80-90;

Sodium.alpha.-hydroxypropionate, chitosan are mixed, after stirring, add aminopropyl triethoxysilane, at 50-60 DEG C, stirring heating 2-4 minute, adds alkenyl succinic anhydride, is stirred to normal temperature, obtains Preblend;

Protanal Ester SD-LB is mixed with above-mentioned Preblend, add the 60-70% of above-mentioned deionized water weight, 300-500 rev/min of dispersed with stirring 10-20 minute, adds the each raw material of residue, stirs, and obtains described film coalescence aid.

A preparation method for rust-proofing aluminum alloy surface treatment agent, comprises the following steps:

The preparation of A component: tara gum and chitosan are mixed to join in deionized water, add the each raw material of residue after stirring, 50-60 rev/min of dispersed with stirring 10-20 minute;

The preparation of B component: plant ash, polyurethane(s) are mixed, be uniformly mixed 3-5 minute at 50-60 DEG C, add palmityl trimethyl ammonium chloride, be stirred to normal temperature, add the each raw material of residue, 100-130 rev/min of dispersed with stirring 10-20 minute;

A, B component are mixed, and 400-600 rev/min of dispersed with stirring 1-2 hour, obtains described rust-proofing aluminum alloy surface treatment agent.

Advantage of the present invention is:

Surface treatment agent of the present invention has good rust-proofing effect, even if workpiece is in acid, the more high environment easily getting rusty of humidity, also can keep not being subject to for a long time corrosion, film surface better resistance, and protectiveness is lasting.

Embodiment

Embodiment 1

A kind of rust-proofing aluminum alloy surface treatment agent, is characterized in that it is made up of A, B two components, and described A component is made up of the raw material of following weight parts:

Tara gum 1.2, hydroxyethyl meth acrylate phosphoesterase 30 .3, chitosan 2, butynediol 2-3,2 ethyl hexanoic acid 2, Silane coupling agent KH550 6, deionized water 60;

Described B component is made up of the raw material of following weight parts:

Palmityl trimethyl ammonium chloride 2, Succinic anhydried 3, sodium monoflurophosphate 0.4, dipropylene glycol 2, plant ash 0.4, polyurethane(s) 1, film coalescence aid 2,3-TSL 8330 8, deionized water 60;

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

Protanal Ester SD-LB 30, Sodium.alpha.-hydroxypropionate 2, diacetone-acryloamide(DAA) 0.2, polymaleic anhydride 3, chitosan 1, aminopropyl triethoxysilane 0.5, alkenyl succinic anhydride 0.4, deionized water 90;

Sodium.alpha.-hydroxypropionate, chitosan are mixed, after stirring, add aminopropyl triethoxysilane, at 60 DEG C, stirring heating 2 minutes, adds alkenyl succinic anhydride, is stirred to normal temperature, obtains Preblend;

Protanal Ester SD-LB is mixed with above-mentioned Preblend, add 60%, 500 rev/min of dispersed with stirring 20 minutes of above-mentioned deionized water weight, add the each raw material of residue, stir, obtain described film coalescence aid.

A preparation method for rust-proofing aluminum alloy surface treatment agent, comprises the following steps:

The preparation of A component: tara gum and chitosan are mixed to join in deionized water, add the each raw material of residue after stirring, 60 revs/min of dispersed with stirring 20 minutes;

The preparation of B component: plant ash, polyurethane(s) are mixed, be uniformly mixed 5 minutes at 60 DEG C, add palmityl trimethyl ammonium chloride, be stirred to normal temperature, add the each raw material of residue, 130 revs/min of dispersed with stirring 20 minutes;

A, B component are mixed, and 600 revs/min of dispersed with stirring 2 hours, obtain described rust-proofing 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 rust-proofing aluminum alloy surface treatment agent, is characterized in that it is made up of A, B two components, and described A component is made up of the raw material of following weight parts:

Tara gum 1-1.2, hydroxyethyl meth acrylate phosphoesterase 30 .3-1, chitosan 1-2, butynediol 2-3,2 ethyl hexanoic acid 2-3, Silane coupling agent KH550 5-6, deionized water 50-60;

Described B component is made up of the raw material of following weight parts:

Palmityl trimethyl ammonium chloride 1-2, Succinic anhydried 2-3, sodium monoflurophosphate 0.4-1, dipropylene glycol 1-2, plant ash 0.4-1, polyurethane(s) 1-2, film coalescence aid 2-4,3-TSL 8330 6-8, deionized water 50-60;

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

Protanal Ester SD-LB 20-30, Sodium.alpha.-hydroxypropionate 1-2, diacetone-acryloamide(DAA) 0.1-0.2, polymaleic anhydride 2-3, chitosan 1-2, aminopropyl triethoxysilane 0.5-1, alkenyl succinic anhydride 0.2-0.4, deionized water 80-90;

Sodium.alpha.-hydroxypropionate, chitosan are mixed, after stirring, add aminopropyl triethoxysilane, at 50-60 DEG C, stirring heating 2-4 minute, adds alkenyl succinic anhydride, is stirred to normal temperature, obtains Preblend;

Protanal Ester SD-LB is mixed with above-mentioned Preblend, add the 60-70% of above-mentioned deionized water weight, 300-500 rev/min of dispersed with stirring 10-20 minute, adds the each raw material of residue, stirs, and obtains described film coalescence aid.

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

The preparation of A component: tara gum and chitosan are mixed to join in deionized water, add the each raw material of residue after stirring, 50-60 rev/min of dispersed with stirring 10-20 minute;

The preparation of B component: plant ash, polyurethane(s) are mixed, be uniformly mixed 3-5 minute at 50-60 DEG C, add palmityl trimethyl ammonium chloride, be stirred to normal temperature, add the each raw material of residue, 100-130 rev/min of dispersed with stirring 10-20 minute;

A, B component are mixed, and 400-600 rev/min of dispersed with stirring 1-2 hour, obtains described rust-proofing aluminum alloy surface treatment agent.