CN102108321B - Metal deoiling agent and deoiling method thereof - Google Patents

Metal deoiling agent and deoiling method thereof Download PDF

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Publication number
CN102108321B
CN102108321B CN 200910189444 CN200910189444A CN102108321B CN 102108321 B CN102108321 B CN 102108321B CN 200910189444 CN200910189444 CN 200910189444 CN 200910189444 A CN200910189444 A CN 200910189444A CN 102108321 B CN102108321 B CN 102108321B
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metal
acid
degreaser
deoiling
degreasing agent
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CN102108321A (en
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程云
赵惠玲
管新强
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Changsha Topwellwear Metal Material Science Co., Ltd.
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BYD Co Ltd
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Abstract

The invention provides a metal deoiling agent. The deoiling agent contains anionic surfactant, nonionic surfactants, solubilizer and corrosion inhibitor, wherein corrosion inhibitor contains monocarboxylic acid and dicarboxylic acid and the weight ratio of monocarboxylic acid to dicarboxylic acid is 10-1:1. The invention also provides a deoiling method. The deoiling method is as follows: soaking a metal material in the deoiling agent to perform ultrasonic deoiling for 1-3min, wherein the temperature of the deoiling agent is 50-80 DEG C and the metal deoiling agent is the metal deoiling agent in the claim 1. The deoiling agent of the invention can be used to effectively remove greasy dirts on the surface of metal in a short time can not corrode metal; and the deoiling agent has simple formula, low cost and stable performance.

Description

A kind of degreasing agent for metal and deoiling method
Technical field
The present invention relates to degreasing agent for metal and deoiling method.
Background technology
In the process of Metal Production and processing, often to use and clean the oil removing operation.The various degreasing agent for metals that often use at present mainly contain strong acid, highly basic and tensio-active agent etc.They generally all are to process for the lighter greasy dirt of metal surface, and are low to heavier greasy dirt cleaning efficiency, show that scavenging period is long, and effect is also very poor; Foam is a lot, cleans after affecting the effect of oil removing and oil removing; Contain various hazardous and noxious substances such as Sodium Nitrite etc., contaminate environment damages operator's health; Easily more active metal such as aluminium etc. are caused corrosion, affect following process.
Summary of the invention
The technical problem to be solved in the present invention is the low defective of existing degreaser oil removal efficiency, thereby the high degreaser of a kind of oil removal efficiency and deoiling method are provided.
The invention provides a kind of degreasing agent for metal, this degreaser comprises anion surfactant, nonionogenic tenside, solubilizing agent and inhibiter, and wherein said inhibiter comprises that weight ratio is 10-1: 1 monocarboxylic acid and di-carboxylic acid.
The present invention also provides a kind of deoiling method, metallic substance is immersed in carries out ultrasonic oil removing in the degreaser, and the time is 1-3min, and wherein, described degreaser is degreaser of the present invention.
Degreaser of the present invention can effectively be removed the greasy dirt of metallic surface within the extremely short time, metal is not had corrodibility, and the prescription of degreaser is simple simultaneously, and cost is low, stable performance.
Embodiment
The invention provides a kind of degreasing agent for metal, change degreaser and comprise anion surfactant, nonionogenic tenside, solubilizing agent and inhibiter, wherein said inhibiter comprises that weight ratio is 10-1: 1 monocarboxylic acid and di-carboxylic acid.
Carboxylate radical can adsorb at metallic matrix, and monocarboxylic absorption is tightr, and molecule one end is adsorbed in metallic matrix, and the other end freely stretches to the solution direction, to form more closely hydrophobic layer, stops the metallic matrix hot spot further to destroy; And the adsorption site of di-carboxylic acid has 2, adsorbs more firmly, can play preferably corrosion inhibition equally.But " bridge-type " structure of 2 adsorption site formation can cause certain obstruction to other Adsorbed moleculars and motion, and medium plays barrier effect to external world in larger planar range, has weakened again to a certain extent the corrosion resistance of aluminium.So there is certain complementary effect in the two effect, its proportioning is very large on the impact of corrosion mitigating effect.The present inventor through a large amount of experiment find when the weight ratio of monocarboxylic acid and di-carboxylic acid at 10-1: in 1 this scope good deoiling effect is arranged.For better deoiling effect is arranged, preferably, the weight ratio of described monocarboxylic acid and di-carboxylic acid is 5-2: 1.
According to degreasing agent for metal provided by the present invention, preferably, described inhibiter also comprises at least a in urotropine, Sodium orthomolybdate, phytic acid and the benzotriazole.Wherein, urotropine can be adsorbed on the metallic surface, changes the character of metallic surface, thereby prevents corrosion.Benzotriazole can with medium in relevant ionic reaction and form etch-proof precipitation membrane in the metallic surface.Molybdate is as the good inhibiter of a kind of resisting corrosion of chlorine ion performance.The inhibition mechanism of molybdate mainly is that molybdenum acid ion can not only be adsorbed on the metallic surface of active dissolution, can be adsorbed on again the fault location of passive film or enters oxide film and with it acting in conjunction.Phytic acid can form at metal surface the unit molecule protective membrane of firm compact, suppresses the oxidation corrosion of metal.
According to degreasing agent for metal provided by the present invention, preferably, take the weight of degreasing agent for metal as benchmark, the content of described anion surfactant is 20-75wt%, more preferably 30-50wt%; The content of described nonionogenic tenside is 8-40wt%, more preferably 15-35wt%; The content of described inhibiter is 0.1-15wt%, 2.5-7wt% more preferably, and the content of described solubilizing agent is 5-20wt%, more preferably 10-15wt%.
According to degreasing agent for metal provided by the present invention, preferably, described anion surfactant is at least a in triethanolamine oleate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, sodium stearate, polyoxyethylene lauryl alcohol sodium sulfate, aliphatic alcohol polyethenoxy ether carboxylate, the laurin phosphate ester salt.Described nonionogenic tenside is at least a in alkylphenol polyoxyethylene, cocoanut fatty acid diethanolamide, the fatty alcohol-polyoxyethylene ether.
According to degreasing agent for metal provided by the present invention, preferably, described unary carboxylation is at least a in lauric acid, capric acid, tetradecanoic acid, butanic acid, the caproic acid.Described dicarboxylate is at least a in sebacic acid, hexanodioic acid, Succinic Acid, the nonane diacid.
According to degreasing agent for metal provided by the present invention, the effect of solubilizing agent is to promote dissolving each other of organism and water solution system, is conducive to form the homogeneous system.Preferably, described solubilizing agent can be various materials with compatibilization known in those skilled in the art, and more preferably, described solubilizing agent is at least a in ethanol, Virahol, butanols, the alcohol ether.
According to degreasing agent for metal provided by the present invention, preferably, also comprise washing assistant, take the weight of degreasing agent for metal as benchmark, the content of described washing assistant is 1-10wt%, is preferably 2-5wt%.The Main Function of washing assistant is softening water hardness, alkaline buffer environment is provided, and wetting, emulsification, suspension, dispersion spot dirt, prevents that the again precipitation of dirt from adhering to.Described washing assistant can be all substances that can achieve the above object known in those skilled in the art, and more preferably, described washing assistant is at least a in potassium pyrophosphate, trisodium phosphate, Sodium Nitrite, Sodium Benzoate, the sodium sulfate.
According to degreasing agent for metal provided by the present invention, preferably, also comprise defoamer, take the weight of degreasing agent for metal as benchmark, the content of described defoamer is 0.001-0.01wt%, is preferably 0.002-0.005wt%.Described defoamer can be controlled the generation of foam, reduces sewage discharge.Described defoamer can be the various defoamers that those skilled in the art commonly used, and more preferably, described defoamer is at least a in dimethyl silicone oil, polyether-modified silicon, higher alcohols, the polyoxyethylene polyoxy propyl alcohol amidogen ether.
The invention provides the preparation method of degreasing agent for metal, the method is: raw material is placed container according to required dosage respectively, and soluble in water respectively, the taken amount of water is advisable can melt raw material, and each raw material and water-soluble optimum temps are:
(1) anion surfactant and nonionogenic tenside are used 60-90 ℃ hot water dissolving, stir, and obtain mixing solutions 1;
(2) 25-50 ℃ warm water dissolving of other materials stirs, and obtains mixing solutions 2;
Mixing solutions 1 and mixing solutions 2 are mixed, and water is adjusted to required concentration and gets final product.
The present invention also provides a kind of deoiling method, metallic substance is immersed in carries out ultrasonic oil removing in the degreaser, and the time is 1-3min, and wherein, described degreaser is degreaser of the present invention.
The invention will be further described below in conjunction with embodiment.
Embodiment 1
1, the preparation method of degreaser
(1) with triethanolamine oleate 400g, cocoanut fatty acid diethanolamide (6502) 120g, fatty alcohol-polyoxyethylene ether (AEO) 80g stir with 80 ℃ the hot water dissolving of 150g, obtain mixing solutions 1;
(2) sebacic acid 50g, lauric acid 50g, propyl carbinol 50g are dissolved with 40 ℃ the warm water of 70g, stir, obtain mixing solutions 2;
Mixing solutions 1 and mixing solutions 2 are mixed, add 30g water and be adjusted to 1000g, obtain degreaser A1.
2, oil removing
Get an amount of degreaser A1, to 15 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 70 ℃ dilution.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Embodiment 2
1, the preparation of degreasing agent for metal
(1) polyoxyethylene lauryl alcohol sodium sulfate 500g, cocoanut fatty acid diethanolamide (6501) 100g, fatty alcohol-polyoxyethylene ether (peregal) 50g are used 70g80 ℃ hot water dissolving, stir, obtain mixing solutions 1;
(2) Sodium Benzoate 30g, phytic acid 60g, lauric acid 2g, hexanodioic acid 1g, ethanol 100g are dissolved with 30g30 ℃ warm water, stir, obtain mixing solutions 2;
Mixing solutions 1 and mixing solutions 2 are mixed, add 57g water and be adjusted to 1000g, obtain degreaser A2.
2, oil removing
Get an amount of degreaser A2, to 18 times the water that wherein adds degreaser weight degreaser is diluted, stainless steel is immersed in the degreaser after 70 ℃ the dilution and carries out ultrasonic oil removing 3min.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Embodiment 3
(1) with aliphatic alcohol polyethenoxy ether carboxylate 400g, Sodium dodecylbenzene sulfonate 200g, sodium lauryl sulphate 20g, cocoanut fatty acid diethanolamide (6502) 20g, fatty alcohol-polyoxyethylene ether (AEO) 80g 80 ℃ hot water dissolving with 10g, stir, obtain mixing solutions 1;
(2) sodium sulfate 50g, urotropine 50g, phytic acid 30g, Succinic Acid 20g, capric acid 50g, Virahol 60g, dimethyl silicone oil 0.1g are dissolved with 40 ℃ the warm water of 10g, stir, obtain mixing solutions 2;
Mixing solutions 1 and mixing solutions 2 are mixed, obtain 1000g degreaser A3.
2, oil removing
Get an amount of degreaser A3, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 65 ℃ dilution.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Embodiment 4
(1) with triethanolamine oleate 100g, Sodium dodecylbenzene sulfonate 40g, sodium lauryl sulphate 60g, cocoanut fatty acid diethanolamide (6501) 150g, cocoanut fatty acid diethanolamide (6502) 100g, fatty alcohol-polyoxyethylene ether (peregal) 150g 80 ℃ hot water dissolving with 40g, stir, obtain mixing solutions 1;
(2) with potassium pyrophosphate 80g, Sodium Benzoate 20g, urotropine 10g, nonane diacid 10g, tetradecanoic acid 50g, ethanol 150g and polyether-modified silicon 0.05g 40 ℃ warm water dissolving with 40g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, obtain 1000g degreaser A4.
2, oil removing
Get an amount of degreaser A4, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 65 ℃ dilution.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Embodiment 5
(1) with triethanolamine oleate 400g, Sodium dodecylbenzene sulfonate 150g, sodium lauryl sulphate 200g, cocoanut fatty acid diethanolamide (6501) 50g, fatty alcohol-polyoxyethylene ether (peregal) 30g 80 ℃ hot water dissolving with 25g, stir, obtain mixing solutions 1;
(2) with Sodium Nitrite 20g, urotropine 10g, sebacic acid 5g, butanic acid 50g, ethanol 50g and polyether-modified silicon 0.02g 40 ℃ warm water dissolving with 10g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, obtain 1000g degreaser A5.
2, oil removing
Get an amount of degreaser A5, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 70 ℃ dilution.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Embodiment 6
(1) with triethanolamine oleate 100g, Sodium dodecylbenzene sulfonate 100g, sodium lauryl sulphate 100g, cocoanut fatty acid diethanolamide (6501) 150g, fatty alcohol-polyoxyethylene ether (peregal) 200g 80 ℃ hot water dissolving with 70g, stir, obtain mixing solutions 1;
(2) with potassium pyrophosphate 80g, Sodium Benzoate 20g, urotropine 10g, sebacic acid 5g, caproic acid 10g, ethanol 100g and polyether-modified silicon 0.01g 40 ℃ warm water dissolving with 30g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, be adjusted to 1000g with 25g water, obtain degreaser A6.
2, oil removing
Get an amount of degreaser A6, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 70 ℃ dilution.
Product surface is without greasy dirt, without corrosion phenomenon after the operations such as washing oven dry.
Comparative Examples 1
(1) with triethanolamine oleate 100g, Sodium dodecylbenzene sulfonate 150g, sodium lauryl sulphate 200g, cocoanut fatty acid diethanolamide (6501) 150g, fatty alcohol-polyoxyethylene ether (peregal) 100g 80 ℃ hot water dissolving with 20g, stir, obtain mixing solutions 1;
(2) with potassium pyrophosphate 80g, Sodium Benzoate 20g, urotropine 10g, sebacic acid 50g, lauric acid 10g, ethanol 100g and polyether-modified silicon 0.01g 40 ℃ warm water dissolving with 10g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, obtain degreaser B1.
2, oil removing
Get an amount of degreaser B1, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 70 ℃ dilution.
Product surface is without greasy dirt after the operations such as washing oven dry, and product surface has slight blushing.
Comparative Examples 2
(1) with triethanolamine oleate 100g, Sodium dodecylbenzene sulfonate 150g, sodium lauryl sulphate 200g, cocoanut fatty acid diethanolamide (6501) 150g, fatty alcohol-polyoxyethylene ether (peregal) 100g 80 ℃ hot water dissolving with 50g, stir, obtain mixing solutions 1;
(2) with potassium pyrophosphate 80g, Sodium Benzoate 20g, urotropine 10g, ethanol 100g and polyether-modified silicon 0.01g 40 ℃ warm water dissolving with 40g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, obtain 1000g degreaser B2.
2, oil removing
Get an amount of degreaser B2, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 700 ℃ dilution.
Product surface is without greasy dirt after the operations such as washing oven dry, and product surface has serious yellowing phenomenon.
Comparative Examples 3
(1) with triethanolamine oleate 100g, Sodium dodecylbenzene sulfonate 150g, sodium lauryl sulphate 200g, cocoanut fatty acid diethanolamide (6501) 150g, fatty alcohol-polyoxyethylene ether (peregal) 100g 80 ℃ hot water dissolving with 35g, stir, obtain mixing solutions 1;
(2) with potassium pyrophosphate 80g, Sodium Benzoate 20g, urotropine 10g, lauric acid 20g, ethanol 100g and polyether-modified silicon 0.01g 40 ℃ warm water dissolving with 35g, stir, obtain mixing solutions 2;
Mixing solutions 1 mixing solutions 2 is mixed, obtain 1000g degreaser B3.
2, oil removing
Get an amount of degreaser B3, to 20 times the water that wherein adds degreaser weight degreaser is diluted, will carry out ultrasonic oil removing 3min in the degreaser of aluminium alloy dipping after 70 ℃ dilution.
Product surface is without greasy dirt after the operations such as washing oven dry, and product surface has whole blushing.
Can find out that from embodiment 1-6 degreaser of the present invention is used for processing the greasy dirt of various metallic surfaces, cleaning the rear surface does not have greasy dirt to exist, simultaneously not corrosion of surface; Can find out that from Comparative Examples 1-3 the degreaser that obtains with Comparative Examples carries out oil removal treatment to metal base, the surface has exists greasy dirt, and the corrosion phenomenon that has that has exists.Degreaser of the present invention can be removed the greasy dirt of metallic surface better from the above, simultaneously to not corrosion of metallic surface.

Claims (9)

1. degreasing agent for metal, it is characterized in that: comprise anion surfactant, nonionogenic tenside, solubilizing agent and inhibiter, wherein said inhibiter comprises that weight ratio is 10-1: 1 monocarboxylic acid and di-carboxylic acid,
Wherein, described monocarboxylic acid is at least a in lauric acid, capric acid, tetradecanoic acid, butanic acid, the caproic acid; Described di-carboxylic acid is at least a in hexanodioic acid, Succinic Acid, the nonane diacid;
Take the weight of degreasing agent for metal as benchmark, the content of described anion surfactant is 20-75wt%, and the content of described nonionogenic tenside is 8-40wt%, and the content of described inhibiter is 0.1-15wt%, and the content of described solubilizing agent is 5-20wt%;
Described anion surfactant is at least a in triethanolamine oleate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, sodium stearate, ethoxylated dodecyl alcohol sodium sulfate, aliphatic alcohol polyethenoxy ether carboxylate, the laurin phosphate ester salt; Described nonionogenic tenside is at least a in alkylphenol polyoxyethylene, cocoanut fatty acid diethanolamide, the fatty alcohol-polyoxyethylene ether;
Described solubilizing agent is at least a in ethanol, Virahol, butanols, the alcohol ether.
2. degreasing agent for metal as claimed in claim 1 is characterized in that: described inhibiter also comprises at least a in urotropine, Sodium orthomolybdate, phytic acid and the benzotriazole.
3. degreasing agent for metal as claimed in claim 1 is characterized in that: also comprise washing assistant, take the weight of degreasing agent for metal as benchmark, the content of described washing assistant is 1-10wt%.
4. degreasing agent for metal as claimed in claim 3 is characterized in that: described washing assistant is at least a in potassium pyrophosphate, trisodium phosphate, Sodium Nitrite, Sodium Benzoate, the sodium sulfate.
5. degreasing agent for metal as claimed in claim 1 is characterized in that: also comprise defoamer, take the weight of degreasing agent for metal as benchmark, the content of described defoamer is 0.001-0.01wt%.
6. degreasing agent for metal as claimed in claim 5 is characterized in that: described defoamer is at least a in dimethyl silicone oil, polyether-modified silicon, the polyoxyethylene polyoxy propyl alcohol amidogen ether.
7. deoiling method is immersed in metallic substance and carries out ultrasonic oil removing in the degreaser, and the time is 1-3min, and the degreaser temperature is 50-80 ℃, it is characterized in that, described degreaser is degreaser claimed in claim 1.
8. deoiling method as claimed in claim 7 is characterized in that: before oil removing degreaser is diluted with water to 15-20 doubly.
9. deoiling method as claimed in claim 7 is characterized in that: described metallic substance is a kind of in stainless steel, aluminium alloy, magnesium alloy, zinc alloy, copper alloy, the iron alloy.
CN 200910189444 2009-12-25 2009-12-25 Metal deoiling agent and deoiling method thereof Active CN102108321B (en)

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CN111074285A (en) * 2019-12-30 2020-04-28 广东省焊接技术研究所(广东省中乌研究院) Metal degreasing agent and preparation method thereof
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