Water-soluble anti-rust oil for black metal product subjected to surface treatment and preparation method of water-soluble anti-rust oil

Abstract

The invention discloses water-soluble anti-rust oil for a black metal product subjected to surface treatment. The water-soluble anti-rust oil comprises the following raw materials in parts by weight: base oil, a compound oil-soluble anti-rust agent, a compound emulsifier, a compound antioxidant and a compound emulsion stabilizer, the compound oil-soluble antirust agent is a mixture of high-base-number calcium sulfonate, medium-base-number calcium sulfonate, fatty acid calcium, calcium naphthenate and the like; the water-soluble anti-rust oil has the characteristics of low consumption and thin oil film, alkaline substances contained in the water-soluble anti-rust oil can effectively neutralize acidic substances remaining on the surface and in pores of a phosphatized or electroplated product, fatty acid soap contained in the water-soluble anti-rust oil and metal ions such as zinc in the pores are replaced, insoluble soap is generated and deposited to seal the pores, air and moisture are isolated, and the corrosion resistance of the surface layer is greatly improved; the contained alcohol stable dispersing agent is evaporated along with water, and the water-soluble anti-rust oil remaining on the surface of a product loses emulsibility and becomes a hydrophobic oil film, so that the damage of water, salt mist and oxygen to the product can be effectively resisted, and the protective property to the product is greatly improved.

Description

Technical Field

[0001] The invention relates to anti-rust oil, in particular to a water-soluble anti-rust oil for surface-treated ferrous metal products and a preparation method thereof. Background Art

[0002] Ferrous metals refer to the three metals of iron, manganese and chromium. In order to improve corrosion resistance or decorative properties or other uses, ferrous metal products will be phosphated or electroplated on the surface of metal products. Phosphating is the process of forming a phosphate chemical conversion film by chemical and electrochemical reactions. The phosphate conversion film formed is called a phosphate film. The purpose of phosphating is mainly to provide protection for the base metal and prevent the metal from being corroded to a certain extent; it is used for primer before painting to improve the adhesion and corrosion resistance of the paint film layer; it plays a role in reducing friction and lubrication in the metal cold processing process. Electroplating is the process of plating a thin layer of other metals or alloys on certain metal surfaces using the principle of electrolysis. It is a process that uses electrolysis to attach a layer of metal film to the surface of metal or other material parts, thereby preventing metal oxidation (such as rust), improving wear resistance, conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhancing beauty. For ferrous metal products, after phosphating and electroplating, the surface of ferrous metal products will always have defects such as pores or rough membranes. They are very easy to rust during transportation and storage, and even scrapped. At present, there is no anti-rust oil specifically for the surface treatment of ferrous metals.

[0003] Therefore, there is a need for an anti-rust oil for the surface treatment of ferrous metal products to solve the later anti-rust problem of metal products treated by phosphating or electroplating. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a water-soluble anti-rust oil for surface-treated ferrous metal products and a preparation method thereof, so as to solve the problem of late rust prevention of metal products treated with phosphating or electroplating.

[0005] The water-soluble rust-proof oil for surface-treated ferrous metal products of the present invention comprises the following components by weight: 70-75 parts of base oil, 10-15 parts of compound oil-soluble rust-proof agent, 10-15 parts of compound emulsifier, 0.5-1 part of compound antioxidant, and 3-5 parts of compound emulsification stabilizer; the compound oil-soluble rust-proof agent is a mixture of high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747;

[0006] Furthermore, the compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkyl benzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate;

[0007] Further, the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132;

[0008] Furthermore, the composite emulsion stabilizer is a mixture of potassium hydroxide, sodium hydroxide, ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether;

[0009] Further, the base oil is 10-15# hydrogenated paraffinic or naphthenic mineral oil;

[0010] Furthermore, the raw materials include the following components by weight: 72 parts of base oil, 13 parts of compound oil-soluble rust inhibitor, 13 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsion stabilizer.

[0011] The method for preparing the water-soluble rust-proof oil for surface-treated ferrous metal products of the present invention comprises the following steps:

[0012] After heating the base oil, add the oil-soluble rust inhibitor and stir to dehydrate, then add the emulsifier and stir until the emulsifier is evenly dissolved, and finally add the antioxidant to obtain a transparent oil liquid;

[0013] Further, the base oil is heated to 110-130° C.; after adding the oil-soluble rust inhibitor, the temperature is lowered to 70-90° C., and then the emulsifier is added; after the temperature is lowered to 50-60° C., an antioxidant is added, and the mixture is kept warm and stirred.

[0014] The beneficial effects of the present invention are as follows: the water-soluble anti-rust oil for surface-treated ferrous metal products of the present invention and the preparation method thereof have the characteristics of low dosage and thin oil film. The alkaline substances contained in the water-soluble anti-rust oil can effectively neutralize the acidic substances remaining on the surface and in the pores of the products after phosphating or electroplating. The fatty acid soap contained in the water-soluble anti-rust oil replaces the metal ions such as zinc in the pores to generate insoluble soap deposits to seal the pores, isolate air and moisture and greatly improve the corrosion resistance of the surface layer. As the alcohol-type stabilizing dispersant contained in the water-soluble anti-rust oil evaporates with the water, the water-soluble anti-rust oil remaining on the surface of the product loses its emulsification and becomes a hydrophobic oil film. This anti-rust oil film can effectively resist the damage of moisture, salt spray and oxygen to the products, greatly improves the protection of the products, and the oil film is thin and bright, and improves the decorative effect of the products. DETAILED DESCRIPTION

[0015] For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.

[0016] In the examples, the experimental methods used are conventional methods unless otherwise specified, and the materials, reagents, etc. used are all commercially available unless otherwise specified.

[0017] The water-soluble anti-rust oil for surface-treated ferrous metal products of this embodiment comprises the following components by weight: 70-75 parts of base oil, 10-15 parts of compound oil-soluble anti-rust agent, 10-15 parts of compound emulsifier, 0.5-1 part of compound antioxidant, and 3-5 parts of compound emulsifier stabilizer; the compound oil-soluble anti-rust agent is a mixture of high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclohexane acid calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747; the alkaline substances contained can effectively neutralize the acidic substances remaining on the surface and in the pores of the product after phosphating or electroplating, and the fatty acid soap contained in the water-soluble anti-rust oil replaces the metal ions such as zinc in the pores to form insoluble soap deposition to seal the pores, isolate air and moisture, and greatly improve the corrosion resistance of the surface. High base value calcium sulfonate T106, medium base value calcium sulfonate T105; RC4295 (Rhein Chemie, Germany), composite calcium sulfonate, does not contain barium, has good oil solubility even at low temperatures, can last for 50 hours in salt spray, has good compatibility, and is used in oil-type rust preventive oil, lubricating rust preventive oil, and soft film rust preventive products. RC 4211, a non-staining, low-odor and barium-free preservative additive, provides a uniform and stable wax protective layer; Rc4220, named RC 4220 (M 10451); T746 is a dodecenylsuccinic acid rust inhibitor, made from imported raw materials. It can form a firm oil film on the metal surface to protect the metal from rust and corrosion, and has good moisture resistance and shutter box exposure test results; T-747 has the same rust prevention performance as T746, but has a lower acid value, good fluidity, good oil solubility, can form a protective film on the metal surface to prevent corrosion and rust on the metal surface, and forms a dense oil film with the metal. It is an excellent rust inhibitor.

[0018] In this embodiment, the compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkyl benzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitol oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; antioxidant T501 is an oil additive made from p-cresol and isobutylene, which plays an antioxidant and anti-glue role in oil. This product has good oil solubility, is insoluble in water and caustic soda, and is a broad-spectrum antioxidant; Rc7110, Rc7115, Rc712 and Rc7132 are all Products, RC 7110 is a crystalline antioxidant, belonging to the sterically hindered, non-discoloring phenolic class. Rc7115 is not only a free radical scavenger, but also can deactivate the catalytically active dissolved copper through complexation. It is a non-discoloring, highly effective antioxidant with a wide range of applicability. RC 7115 can be used in combination with T501, Rc7110, Rc712 and Rc7132 to further improve Oxidation inhibition properties of RC 7115.

[0019] In this embodiment, the compound emulsifying stabilizer is a mixture of potassium hydroxide, sodium hydroxide, ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether; as the water evaporates from the alcohol stabilizing dispersant contained therein, the water-soluble rust-proof oil remaining on the surface of the product loses its emulsification property and turns into a hydrophobic oil film. This rust-proof oil film can effectively resist the damage to the product by moisture, salt spray, and oxygen, greatly improving the protection of the product, and the oil film is thin and bright, and improves the decorative effect of the product.

[0020] In this embodiment, the base oil is 10-15# hydrogenated paraffinic or cycloalkyl mineral oil.

[0021] In a preferred embodiment, the raw materials include the following components by weight: 72 parts of base oil, 13 parts of compound oil-soluble rust inhibitor, 13 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsion stabilizer.

[0022] The method for preparing the water-soluble rust-proof oil for surface-treated ferrous metal products of this embodiment comprises the following steps:

[0023] The base oil is heated to 110-130°C, and then an oil-soluble rust inhibitor is added, stirred and dehydrated. After cooling to 70-90°C, an emulsifier is added and stirred until the emulsifier is uniformly dissolved. The base oil is cooled to 50-60°C, and finally an antioxidant is added and stirred while keeping warm to obtain a transparent oil liquid. The preparation process is simple.

[0024] Embodiment 1

[0025] The water-soluble rust-proof oil for surface-treated ferrous metal products of this embodiment comprises the following components by weight: 70 parts of 10# hydrogenated paraffin base oil, 10 parts of compound oil-soluble rust-proof agent, 10 parts of compound emulsifier, 0.5 parts of compound antioxidant, and 3 parts of compound emulsifier stabilizer; the compound oil-soluble rust-proof agent is high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkyl benzene sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsification stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0026] The preparation method is as follows: heat the base oil to 110°C, add an oil-soluble rust inhibitor, stir and dehydrate, cool to 70°C, add an emulsifier and stir until the emulsifier is evenly dissolved, cool to 50°C, and finally add an antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0027] Embodiment 2

[0028] The water-soluble rust-proof oil for surface-treated black metal products of this embodiment comprises the following components by weight: 75 parts of 15# hydrogenated paraffin base oil, 15 parts of compounded oil-soluble rust-proof agent, 15 parts of compounded emulsifier, 1 part of compounded antioxidant, and 5 parts of compounded emulsified stabilizer; the compounded oil-soluble rust-proof agent is high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The invention discloses a mixture of synthetic petroleum sodium sulfonate, heavy alkylbenzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsifying stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0029] The preparation method is as follows: heat the base oil to 130°C, add an oil-soluble rust inhibitor, stir and dehydrate, cool to 90°C, add an emulsifier and stir until the emulsifier is evenly dissolved, cool to 60°C, and finally add an antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0030] Embodiment 3

[0031] The water-soluble rust-proof oil for surface-treated black metal products of this embodiment comprises the following components by weight: 70 parts of 14# hydrogenated paraffin base oil, 14 parts of compound oil-soluble rust-proof agent, 12 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsifier stabilizer; the compound oil-soluble rust-proof agent is high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkyl benzene sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsification stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0032] The preparation method is as follows: heat the base oil to 115°C, add the oil-soluble rust inhibitor, stir and dehydrate, cool to 75, add the emulsifier and stir until the emulsifier is evenly dissolved, cool to 58°C, and finally add the antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0033] Embodiment 4

[0034] The water-soluble rust-proof oil for surface-treated black metal products of this embodiment comprises the following components by weight: 72 parts of naphthenic mineral oil, 11 parts of compound oil-soluble rust-proof agent, 12 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsifier stabilizer; the compound oil-soluble rust-proof agent is a mixture of high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkylbenzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsification stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0035] The preparation method is as follows: heat the base oil to 125°C, add the oil-soluble rust inhibitor, stir and dehydrate, cool to 85, add the emulsifier and stir until the emulsifier is evenly dissolved, cool to 58°C, and finally add the antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0036] Embodiment 5

[0037] The water-soluble rust-proof oil for surface-treated black metal products of this embodiment comprises the following components by weight: 74 parts of naphthenic mineral oil, 14 parts of compound oil-soluble rust-proof agent, 12 parts of compound emulsifier, 0.7 parts of compound antioxidant, and 3 parts of compound emulsifier stabilizer; the compound oil-soluble rust-proof agent is a mixture of high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkylbenzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsification stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0038] The preparation method is as follows: heat the base oil to 125°C, add the oil-soluble rust inhibitor, stir and dehydrate, cool to 85, add the emulsifier and stir until the emulsifier is evenly dissolved, cool to 55°C, and finally add the antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0039] Embodiment 6

[0040] The water-soluble rust-proof oil for surface-treated black metal products of this embodiment comprises the following components by weight: 72 parts of naphthenic mineral oil, 13 parts of compound oil-soluble rust-proof agent, 13 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsifier stabilizer; the compound oil-soluble rust-proof agent is a mixture of high-base calcium sulfonate, medium-base calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747. The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkylbenzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitan oleate; the compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132; the compound emulsification stabilizer is a mixture of potassium hydroxide (30% solution), sodium hydroxide (30% solution), ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

[0041] The preparation method is as follows: heat the base oil to 118°C, add the oil-soluble rust inhibitor, stir and dehydrate, cool to 80°C, add the emulsifier and stir until the emulsifier is evenly dissolved, cool to 55°C, finally add the antioxidant and keep warm and stir to obtain a transparent oil liquid.

[0042] The physical and chemical indicators of the water-soluble anti-rust oil for surface-treated ferrous metal products in the above embodiment are:

[0043] 1.15% emulsification: qualified, SH / T 0365-92

[0044] 2. Wet heat test: (oil film after evaporation of 10% aqueous solution) (10# steel, grade A), 720h, GB / T2361

[0045] 3. Continuous salt spray test: (oil film after evaporation of water from 10% aqueous solution) (10# steel, grade A), greater than 24h, SH / T0081.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A water-soluble anti-rust oil for surface-treated ferrous metal products, characterized in that: The raw materials include the following components by weight: 70-75 parts of base oil, 10-15 parts of compound oil-soluble rust inhibitor, 10-15 parts of compound emulsifier, 0.5-1 part of compound antioxidant, and 3-5 parts of compound emulsifier stabilizer; the compound oil-soluble rust inhibitor is a mixture of high alkalinity calcium sulfonate, medium alkalinity calcium sulfonate, fatty acid calcium, cyclopentaneate calcium, neutral synthetic petroleum calcium sulfonate, Rc4295, Rc4211, Rc4220, sulfonated lanolin calcium soap, T746 and T747.

2. The water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The compound emulsifier is a mixture of synthetic petroleum sodium sulfonate, heavy alkyl benzene sodium sulfonate, fatty acid sodium soap, fatty acid potassium soap, fatty acid amine salt, fatty acid amide and sorbitol oleate.

3. The water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The compound antioxidant is a mixture of T501, Rc7110, Rc7115, Rc712 and Rc7132.

4. The water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The compound emulsifying stabilizer is a mixture of potassium hydroxide, sodium hydroxide, ammonia water, ethanolamine, methanol, ethanol, ethylene glycol butyl ether and ethylene glycol phenyl ether.

5. The water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The base oil is 10-15# hydrogenated paraffin-based or naphthenic mineral oil.

6. The water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The raw materials include the following components by weight: 72 parts of base oil, 13 parts of compound oil-soluble rust inhibitor, 13 parts of compound emulsifier, 0.8 parts of compound antioxidant, and 4 parts of compound emulsion stabilizer.

7. The method for preparing a water-soluble rust-proof oil for surface-treated ferrous metal products according to claim 1, characterized in that: The following steps are involved: After the base oil is heated, an oil-soluble rust inhibitor is added and stirred to dehydrate, and then an emulsifier is added and stirred until the emulsifier is evenly dissolved, and finally an antioxidant is added to obtain a transparent oil liquid.

8. The method for preparing the water-soluble anti-rust oil for surface-treated ferrous metal products according to claim 7, characterized in that: Heat the base oil to 110-130℃; add the oil-soluble rust inhibitor, cool it down to 70-90℃ and then add the emulsifier; cool it down to 50-60℃ and then add the antioxidant and keep it warm and stir.