Metallic material surface detergent

[0026] The preparation method of the metal material surface cleaning agent of the present invention is to add the oxidant, pH regulator, surfactant, solubilizer, and defoamer in the aforementioned proportions to pure water and heat to 40 to 60°C and stir to dissolve completely. Finished product.

[0027] The working principle of the present invention is that the cleaning agent can be completely dissolved in water, can effectively remove various pollutants remaining on the surface of the metal material under the action of ultrasound, and can clean the residue on the surface of the metal material during the ultrasonic washing process Removal of chemicals and other impurities, and then spraying and drying to make the surface of the metal material clean. Observed through a magnifying glass, there is no obvious oil stains, dust particles and other pollutants on the surface.

[0028] The metal material surface cleaning agent of the present invention contains a solubilizer, and its structure is similar to the structure of organic pollutants such as oil stains remaining on the surface of the metal material. According to the principle of swelling, the solubility of organic matter such as oil stains can be improved, and the metal can be completely removed There are fingerprints and other pollution on the surface of the material; the non-ionic surfactant contained in the cleaning agent can reduce the surface tension of the solution, and has a strong penetrating ability. It can penetrate between various contaminants on the surface of the metal material and remove the contaminants. Hold it up from the surface of the metal material to achieve the purpose of removal, and can achieve preferential adsorption, and form a protective layer on the surface of the metal material, which can prevent the secondary adsorption of various pollutants and reduce the damage to the surface of the metal material. The oxidizing agent in the cleaning agent can oxidize the difficult-to-remove pollutants and make them consumed or converted into easily soluble substances to achieve the purpose of removal; the defoaming agent in the cleaning agent can reduce the large amount of foam produced by the surfactant, so that The cleaning is more thorough, and it also has a strong adsorption capacity to absorb the pollutants in the cleaning liquid, making the cleaning effect more ideal.

[0029]The advantages of the present invention are: (1) The solubilizer is selected in the cleaning agent, which can improve the solubility of organic pollutants such as oil stains, and according to the swelling principle, it can dissolve the organic pollutants on the surface of the metal material; (2) The cleaning agent is added The surfactant can reduce the surface tension of the cleaning agent, enhance the permeability of the cleaning agent, and improve the cleaning effect on the surface of metal materials; (3) The surfactant in the cleaning agent can enhance mass transfer and ensure the uniformity of cleaning. Reduce the damage to the surface of metal materials; (4) Reasonable preparation of solubilizers, surfactants and defoamers in the cleaning agent can reduce the surface tension of the cleaning agent. At the same time, it has the advantages of good water solubility, strong penetration, no pollution, etc. (5) The chemical reagent selected in the cleaning agent does not pollute the environment, is not easy to burn, and is a non-ozone-depleting substance. The waste liquid after cleaning is easy to process and discharge, and can meet the environmental protection three waste discharge requirements; (6) The cleaning agent is alkaline , Does not corrode metal equipment, and is safe and reliable to use; (7) The preparation process is simple, the operation is convenient, and the use is safe and reliable.

[0030] Example 1: Prepare 1 kg of cleaning agent.

[0031] Weigh 3% sodium peroxyphosphate and 10% polyoxyethylene fatty alcohol ether with a degree of polymerization of 20 (commercial name: Ping Pingjia, structural formula: RO-(CH2CH2O)nH), 5% 5% triethylamine, 6% n-hexane and 2% polyurea, the remainder is pure water for use.

[0032] Add hexane, polyoxyethylene fatty alcohol ether, sodium peroxyphosphate, polyurea and triethylamine in the aforementioned proportions to pure water, and then heat to 40°C and stir until completely dissolved to obtain the finished cleaning agent. The specific gravity of the cleaning solution is 1.030g/cm 3 , PH value is 12.5.

[0033] When cleaning, step (1): Take a cleaning agent for cleaning, add 10 to 20 times deionized water to the cleaning agent and put it in the first tank, heat it to 60 to 80°C, and put the metal material to be cleaned in the first tank. Ultrasound, the ultrasonic frequency is controlled at 18KHz to 80KHz, and the ultrasonic time is controlled at 3 to 7 minutes;

[0034] Step (2): Ultrasound with deionized water, put the deionized water into the second tank, heat it to 40 to 50°C, take the metal material out of the first tank, put it into the second tank, and perform ultrasound, the ultrasonic frequency is controlled at 18KHz To 80KHz, the ultrasonic time is controlled at 1 to 3 minutes;

[0035] Step (3): Ultrasound with deionized water, put the deionized water into the third tank without heating, take the metal material out of the second tank, put it into the third tank, and perform ultrasound. The ultrasound frequency is controlled at 18KHz to 80KHz. The time is controlled within 1 to 3 minutes;

[0036] Step (4): spray, spray with deionized water at room temperature for 1 to 3 minutes;

[0037] Step (5): Drying, the time is 3 to 5 minutes.

[0038] The drying method in the aforementioned step (5) can be performed by hot air or infrared, and hot air drying is used in this embodiment.

[0039] The metal material cleaned by the above steps is inspected by a magnifying glass, and the surface is clean without obvious contaminants such as oil stains and dust particles, and the one-time pass rate reaches 80%, which is better than the normal level.

[0040] The equipment used in this embodiment is all the prior art, so it will not be repeated.

[0041] In the foregoing embodiment, when the cleaning agent is prepared, hydrogen peroxide or potassium permanganate is used as the oxidant; sodium hydroxide, ammonia or potassium hydroxide is used as the pH regulator, or ethylenediamine, hydroxyethylenediamine, triethylamine and One of tetramethylammonium hydroxide or a combination thereof; the surfactant is selected from fatty alcohol polyoxyethylene ether (0-15) with a degree of polymerization of 15 and fatty alcohol polyoxyethylene ether with a degree of polymerization of 25 (0 -25), fatty alcohol polyoxyethylene ether with a degree of polymerization of 40 (0-40), sorbitan polyoxyethylene ether with a degree of polymerization of 7 (T-7, TWEEN-7), and a degree of polymerization of 9 Sorbitan polyoxyethylene ether ester (T-9, TWEEN-9), sorbitan polyoxyethylene ether ester (T-80, TWEEN-80) with a degree of polymerization of 80, water loss with a degree of polymerization of 81 Sorbitol polyoxyethylene ether ester (T-81, TWEEN-81), sorbitan polyoxyethylene ether ester with a degree of polymerization of 85 (T-85, TWEEN-85), trifluoromethyl ethylene oxide, Methylepichlorohydrin, cholesterol, polyol Taikoo oil or hexadecyl phosphoric acid; solubilizer selects decane, butane, silane or heptane; defoamer selects auxiliary additive type defoamer (FRE- 350), universal defoamer (DSE-110) or polymer silicone emulsion (YN-600), the same effect can also be achieved.

[0042] The fatty alcohol polyoxyethylene ether used in the embodiments of the present invention has 12 to 18 carbon atoms in the fatty alcohol.