CN104862706A - Environment-friendly water-based metal surface treatment agent - Google Patents

Abstract

The invention discloses an environment-friendly water-based metal surface treatment agent. The environment-friendly water-based metal surface treatment agent is composed of, by weight, 18 parts to 20 parts of polyvinyl alcohol, 0.1 part to 0.3 part of dipotassium glycyrrhizinate, 2 parts to 3 parts of sodium palmitate, 0.1 part to 0.2 part of ammonium paratungstate, 2 parts to 3 parts of chlorinated paraffin, 0.2 part to 0.3 part of potassium metasilicate, 0.6 part to 1 part of 6-tert-butyl-o-cresol, 0.3 part to 1 part of bone glue, 0.3 part to 1 part of potassium citrate, 0.3 part to 0.7 part of 2-aminoethyl heptadecenyl imidazoline, 6 parts to 8 parts of sericin, 0.08 part to 0.1 part of boric acid, 10 parts to 20 parts of methylbenzotriazole, 0.9 part to 2 parts of sorbitan oleate, and 170 parts to 200 parts of deionized water. Water soluble macromolecule polyvinyl alcohol is mixed with the sericin, and through boric acid modification, the tensile strength and the thermal stability of a blended membrane can be improved; corrosion inhibition alkali liquor with the methylbenzotriazole as a main material is added, so that the membrane adsorbed on a metal surface can be more even and stable; and a metal material is protected against corrosion of air and harmful media in water, and the better corrosion inhibition effect is achieved.

Description

A kind of environment protection water-based metal conditioner

Technical field

The present invention relates generally to metal conditioner field, particularly relates to a kind of environment protection water-based metal conditioner.

Background technology

Metal conditioner refers to the general name of chemical agent metallic surface being carried out to various process.Metal finishing includes oil removing, rust cleaning, phosphatization, the substrate pretreatment such as antirust, for metal coating techniques, metal protection technology are prepared, the use of substrate pretreatment quality to after this coating preparation and metal has a great impact, water soluble anti-rust agent wherein then may be dissolved in water and forms the aqueous solution, and metal can prevent rust corrosion after this aqueous solution process.Their rust inhibition can be divided three classes.

1. metal and rust-preventive agent generate the insoluble and sull of densification, thus prevent the anode dissolution of metal or promote the passivation of metal, thus suppressing corrosion of metal.This kind of rust-preventive agent is also called passivator, as Sodium Nitrite, potassium bichromate etc.In use, enough consumptions should be ensured.When using quantity not sufficient, can not form complete sull, on not covered very little metallic surface, corrosion electric current density increases, and easily causes severe local corrosion.2. metal and rust-preventive agent generate the salt of indissoluble, thus metal and corrosive medium are isolated, and avoid corrosion.Such as: the phosphoric acid salt had can generate insoluble phosphoric acid molysite with iron effect; Some silicate energy and iron, aluminium effect generate insoluble silicate etc.3. metal and rust-preventive agent generate the complex compound of insoluble, cover metallic surface and protect metal to avoid corrosion.Such as: benzotriazole and copper can generate inner complex Cu (C6H4N3) 2, be both water insolublely also insoluble to oil, thus can protect the surface of copper.

Summary of the invention

The object of the invention is just to provide a kind of environment protection water-based metal conditioner.

The present invention is achieved by the following technical solutions:

A kind of environment protection water-based metal conditioner, it is made up of the raw material of following weight parts:

Polyvinyl alcohol 18-20, Rizinsan K2 A2 0.1-0.3, palmitinic acid soda soap 2-3, ammonium paratungstate 0.1-0.2, clorafin 2-3, potassium silicate 0.2-0.3,6-butyl o-cresol 0.6-1, gelatine 0.3-1, Tripotassium Citrate 0.3-1,2-aminoethyl 17 alkenyl imidazoline 0.3-0.7, silk gum 6-8, boric acid 0.08-0.1, methyl benzotriazazole 10-20, sorbester p17 0.9-2, deionized water 170-200.

2, a preparation method for environment protection water-based metal conditioner as claimed in claim 1, is characterized in that comprising the following steps:

(1) gelatine is got, add the 60-70% of above-mentioned deionized water weight, be dipped to blob of viscose deliquescing, be heated to 75-80 DEG C, add Rizinsan K2 A2, silk gum, insulated and stirred 10-18 minute, add the 80-90% of above-mentioned polyvinyl alcohol weight, boric acid, continue insulated and stirred 40-50 minute at the temperature disclosed above, obtain silk gum emulsion;

(2) methyl benzotriazazole is joined in its weight 3-5 sig water doubly, be heated to 60-70 DEG C, add 6-butyl o-cresol, Tripotassium Citrate, be stirred to normal temperature, obtain inhibition alkali lye;

(3) get remaining polyvinyl alcohol, be heated to 60-70 DEG C, add palmitinic acid soda soap, clorafin, insulated and stirred 6-10 minute, join in remaining deionized water, add sorbester p17, be uniformly mixed 20-30 minute, obtain soap lye;

(4) by above-mentioned inhibition alkali lye, the mixing of silk gum emulsion, add soap lye after stirring, 500-700 rev/min of dispersed with stirring 10-16 minute, obtains inhibition emulsion;

(5) mixed with each raw material of residue by wear-resistant for above-mentioned inhibition liquid, 700-800 rev/min of dispersed with stirring 20-30 minute, obtains described metal conditioner.

A kind of silk gum thickening metal conditioner, described sig water is the sodium hydroxide of 0.1mol/l or the aqueous sodium carbonate of 0.1mol/l.

Advantage of the present invention is:

Water-soluble polymer polyvinyl alcohol mixes with silk gum by the present invention, by boric acid modified tensile strength and the thermostability that can improve blend film, adding with methyl benzotriazazole is the inhibition alkali lye of major ingredient, the film being adsorbed on metallic surface can be made more uniform and stable, protection metallic substance, from the corrosion of hazardous medium in air and water, plays better corrosion mitigating effect;

Metal conditioner of the present invention has good antibacterial preservative property, and viscosity is high, and each materials compatibility is good, environmental non-toxic side effect.

Embodiment

Embodiment 1:

A kind of environment protection water-based metal conditioner, it is made up of the raw material of following weight parts:

Polyvinyl alcohol 20, Rizinsan K2 A2 0.3, palmitinic acid soda soap 3, ammonium paratungstate 0.2, clorafin 2, potassium silicate 0.2,6-butyl o-cresol 0.6, gelatine 0.3, Tripotassium Citrate 0.3,2-aminoethyl 17 alkenyl imidazoline 0.3, silk gum 8, boric acid 0.08, methyl benzotriazazole 20, sorbester p17 0.9, deionized water 200.

A preparation method for environment protection water-based metal conditioner, comprises the following steps:

(1) get gelatine, add 70% of above-mentioned deionized water weight, be dipped to blob of viscose deliquescing, be heated to 80 DEG C, add Rizinsan K2 A2, silk gum, insulated and stirred 18 minutes, add 90% of above-mentioned polyvinyl alcohol weight, boric acid, continue insulated and stirred 50 minutes at the temperature disclosed above, obtain silk gum emulsion;

(2) methyl benzotriazazole is joined in its weight 3-5 sig water doubly, be heated to 60 DEG C, add 6-butyl o-cresol, Tripotassium Citrate, be stirred to normal temperature, obtain inhibition alkali lye;

(3) get remaining polyvinyl alcohol, be heated to 70 DEG C, add palmitinic acid soda soap, clorafin, insulated and stirred 10 minutes, joins in remaining deionized water, adds sorbester p17, is uniformly mixed 30 minutes, obtains soap lye;

(4) by above-mentioned inhibition alkali lye, the mixing of silk gum emulsion, add soap lye after stirring, 700 revs/min of dispersed with stirring 10-16 minute, obtain inhibition emulsion;

(5) mixed with each raw material of residue by wear-resistant for above-mentioned inhibition liquid, 800 revs/min of dispersed with stirring 30 minutes, obtain described metal conditioner.

A kind of silk gum thickening metal conditioner, described sig water is the aqueous sodium carbonate of 0.1mol/l.

Performance test:

Get that surface treatment agent of the present invention processes aluminium alloy respectively, copper-iron alloy sheet material is tested, the specification of two kinds of sheet materials is 80mm × 100mm × 4mm, by this sheet material lateral dissection, carry out spray test, agents useful for same to be concentration be 5% sodium chloride solution, test period 300 hours, measure the bubbling width formed in line of cut side, result bubbling width is 0;

Salt tolerance:

It is in the sodium chloride solution of 5% that the above-mentioned two kinds of sheet materials processed respectively are immersed in concentration, and soak 300 hours, material surface is substantially unchanged, soaks 300 hours, occurs without rust staining.

Claims (3)

1. an environment protection water-based metal conditioner, is characterized in that what it was made up of the raw material of following weight parts:

Polyvinyl alcohol 18-20, Rizinsan K2 A2 0.1-0.3, palmitinic acid soda soap 2-3, ammonium paratungstate 0.1-0.2, clorafin 2-3, potassium silicate 0.2-0.3,6-butyl o-cresol 0.6-1, gelatine 0.3-1, Tripotassium Citrate 0.3-1,2-aminoethyl 17 alkenyl imidazoline 0.3-0.7, silk gum 6-8, boric acid 0.08-0.1, methyl benzotriazazole 10-20, sorbester p17 0.9-2, deionized water 170-200.

2. a preparation method for environment protection water-based metal conditioner as claimed in claim 1, is characterized in that comprising the following steps:

(1) gelatine is got, add the 60-70% of above-mentioned deionized water weight, be dipped to blob of viscose deliquescing, be heated to 75-80 DEG C, add Rizinsan K2 A2, silk gum, insulated and stirred 10-18 minute, add the 80-90% of above-mentioned polyvinyl alcohol weight, boric acid, continue insulated and stirred 40-50 minute at the temperature disclosed above, obtain silk gum emulsion;

(2) methyl benzotriazazole is joined in its weight 3-5 sig water doubly, be heated to 60-70 DEG C, add 6-butyl o-cresol, Tripotassium Citrate, be stirred to normal temperature, obtain inhibition alkali lye;

(3) get remaining polyvinyl alcohol, be heated to 60-70 DEG C, add palmitinic acid soda soap, clorafin, insulated and stirred 6-10 minute, join in remaining deionized water, add sorbester p17, be uniformly mixed 20-30 minute, obtain soap lye;

(4) by above-mentioned inhibition alkali lye, the mixing of silk gum emulsion, add soap lye after stirring, 500-700 rev/min of dispersed with stirring 10-16 minute, obtains inhibition emulsion;

(5) mixed with each raw material of residue by wear-resistant for above-mentioned inhibition liquid, 700-800 rev/min of dispersed with stirring 20-30 minute, obtains described metal conditioner.

3. a kind of silk gum thickening metal conditioner according to claim 1, is characterized in that described sig water is the sodium hydroxide of 0.1mol/l or the aqueous sodium carbonate of 0.1mol/l.