Cleaning agent capable of being used for ship deck and preparation method of cleaning agent

Abstract

The invention belongs to the technical field of cleaning agents, and particularly relates to a cleaning agent for ship decks, which comprises the following components in percentage by mass: 10-20% of a surfactant, 5-10% of a cosurfactant, 15-25% of an oil phase, 50-60% of a water phase, 1-3% of a stabilizer and 0.1-0.5% of a preservative. The preparation method comprises the following steps: 1, mixing the surfactant, the cosurfactant and the oil phase, and uniformly stirring to obtain a mixed solution A; step 2, adding a stabilizer and a preservative into the water phase, and uniformly stirring to obtain a mixed solution B; 3, under high-speed stirring, slowly adding the mixed solution A into the mixed solution B, and continuously stirring until a uniform and stable emulsion is formed; 4, the pH value of the emulsion is adjusted to 6-8, and the stable oil-in-water cleaning agent is obtained. By optimizing a formula and a preparation process, the problem of poor stability of an oil-in-water cleaning agent in the prior art is solved; the cleaning agent has good dirt-removing power and environment-friendly characteristics, and is suitable for cleaning organic pollutants such as oil stains, grease and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning agents, and in particular relates to a cleaning agent that can be used for ship decks and a preparation method thereof. Background Art

[0002] As an important part of a ship, the deck is exposed to the harsh marine environment for a long time, which is prone to the accumulation of oil, salt and other pollutants. These pollutants not only affect the appearance of the ship, but also may corrode the deck material and reduce the service life of the ship.

[0003] Cleaning the ship deck not only keeps the ship's appearance clean, but also ensures the safe operation of the ship, extends its service life, protects the environment, and improves economic benefits. At present, commonly used cleaning agents are divided into water-based and oil-based cleaning agents. Oil-based cleaning agents often contain strong acids, strong alkalis, or organic solvents. Although they have strong decontamination capabilities, they pose potential hazards to deck materials and the marine environment. The water-based cleaning agent forms an oil-in-water structure that is not stable enough and is easy to break. Especially in complex environments such as seawater, the broken cleaning agent will cause oil-water stratification, causing the oil layer to float on the sea surface, which can easily expose the position of the ship. Summary of the invention

[0004] The purpose of the present invention is to provide a cleaning agent that can be used for ship decks and a preparation method thereof; the cleaning agent is a long-term stable water-in-oil cleaning agent that can effectively remove oil stains, salt and other pollutants on the ship deck, while having no adverse effects on the ship deck materials and the marine environment; and can reduce the exposure risk caused by cleaning oil stains during the navigation of the ship.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A cleaning agent that can be used for ship decks, comprising the following components in percentage by mass:

[0007] Surfactant: 10-20%,

[0008] Co-surfactant: 5-10%,

[0009] Oil phase: 15-25%,

[0010] Aqueous phase: 50-60%,

[0011] Stabilizer: 1-3%,

[0012] Preservatives: 0.1-0.5%.

[0013] The surfactant is a mixture of anionic surfactant and nonionic surfactant; the anionic surfactant is selected from one or both of sodium dodecylbenzene sulfonate and sodium dodecyl sulfate, and the nonionic surfactant is selected from one or both of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether. The mixture of anionic surfactant and nonionic surfactant is used as a surfactant, which has good wetting, penetration and emulsification capabilities and can effectively remove oil and salt.

[0014] The co-surfactant is an alcohol compound selected from one or more of ethanol, isopropanol, and n-butanol. The co-surfactant can form a protective film on the surface of the ship deck to prevent corrosion of metal materials during the cleaning process.

[0015] The oil phase is one or more of mineral oil, vegetable oil or synthetic oil.

[0016] The aqueous phase is deionized water.

[0017] The stabilizer is a polymer compound selected from one or more of polyvinyl alcohol, sodium carboxymethyl cellulose and xanthan gum. The stabilizer is used to improve the stability and performance of the cleaning agent.

[0018] The preservative is one or both of sodium benzoate and potassium sorbate.

[0019] The method for preparing the above cleaning agent comprises the following steps:

[0020] Step 1: Mix the surfactant, the co-surfactant and the oil phase, and stir evenly to obtain a mixed solution A;

[0021] Step 2: Add the stabilizer and preservative into the water phase and stir evenly to obtain a mixed solution B;

[0022] Step 3: Slowly add mixed solution A to mixed solution B under high-speed stirring, and continue stirring until a uniform and stable emulsion is formed;

[0023] Step 4: Adjust the pH value of the emulsion to 6-8 to obtain a stable oil-in-water cleaning agent.

[0024] The present invention provides a formula of a stable oil-in-water cleaning agent and a preparation method thereof, and solves the problem of poor stability of the oil-in-water cleaning agent in the prior art by optimizing the formula and preparation process. The cleaning agent has good decontamination ability and environmental protection characteristics, is suitable for cleaning organic pollutants such as oil and grease, and has broad application prospects. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example 1

[0027] This embodiment provides a cleaning agent for a ship deck, comprising the following components in percentage by mass:

[0028] Sodium dodecylbenzenesulfonate: 10%,

[0029] Fatty alcohol polyoxyethylene ether: 5%,

[0030] Ethanol: 5%,

[0031] Mineral oil: 20%,

[0032] Deionized water: 58.9%,

[0033] Polyvinyl alcohol: 1%,

[0034] Sodium benzoate: 0.1%.

[0035] The preparation method comprises the following steps:

[0036] Step 1: Mix sodium dodecylbenzene sulfonate, fatty alcohol polyoxyethylene ether, ethanol and mineral oil, and stir evenly to obtain a mixed solution A;

[0037] Step 2: Add polyvinyl alcohol and sodium benzoate into deionized water and stir evenly to obtain a mixed solution B;

[0038] Step 3: Slowly add mixed solution A to mixed solution B under high-speed stirring, and continue stirring until a uniform and stable emulsion is formed;

[0039] Step 4: Adjust the pH value of the emulsion to 7 to obtain a stable oil-in-water cleaning agent.

[0040] Example 2

[0041] This embodiment provides a cleaning agent for a ship deck, comprising the following components in percentage by mass:

[0042] Sodium lauryl sulfate: 15%,

[0043] Alkylphenol polyoxyethylene ether: 5%,

[0044] Isopropyl alcohol: 5%,

[0045] Vegetable oil: 15%,

[0046] Deionized water: 58.5%,

[0047] Sodium carboxymethyl cellulose: 1.5%,

[0048] Potassium sorbate: 0.5%.

[0049] The preparation method thereof comprises the following steps:

[0050] Step 1: Mix sodium lauryl sulfate, alkylphenol polyoxyethylene ether, isopropyl alcohol and vegetable oil, and stir evenly to obtain a mixed solution A;

[0051] Step 2: Add sodium carboxymethyl cellulose and potassium sorbate into deionized water and stir evenly to obtain a mixed solution B;

[0052] Step 3: Slowly add mixed solution A to mixed solution B under high-speed stirring, and continue stirring until a uniform and stable emulsion is formed;

[0053] Step 4: Adjust the pH value of the emulsion to 7.5 to obtain a stable oil-in-water cleaning agent.

[0054] A series of laboratory tests and field application trials were conducted to evaluate the performance of the cleaning agents.

[0055] Decontamination ability test:

[0056] The method of simulating the pollution of ship deck was adopted. The cleaning agent was applied to the metal plate coated with standard oil and salt, and its decontamination rate was measured.

[0057] The results show that the removal rates of oil and salt by the cleaning agents of Example 1 and Example 2 are over 95% and 98% respectively, which are significantly better than those of traditional cleaning agents.

[0058] Corrosion test:

[0059] The weight loss method and electrochemical method were used to evaluate the effect of cleaning agents on different ship deck materials. This study used steel and aluminum ship deck materials.

[0060] The results show that the corrosion rate of the cleaning agent on the test material is much lower than the industry standard, proving that it has good corrosion inhibition performance. The environmental impact assessment includes biodegradability and ecotoxicity tests. The results show that the biodegradation rate of the cleaning agent within 28 days is more than 90%, and the acute toxicity to marine organisms is low, which meets environmental protection requirements.

[0061] The above description is only a preferred implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning agent that can be used for ship decks, characterized in that: The components include the following mass percentages: Surfactant: 10-20%, Co-surfactant: 5-10%, Oil phase: 15-25%, Aqueous phase: 50-60%, Stabilizer: 1-3%, Preservatives: 0.1-0.5%.

2. A cleaning agent for ship decks according to claim 1, characterized in that: The surfactant is a mixture of anionic surfactant and nonionic surfactant; the anionic surfactant is selected from one or both of sodium dodecylbenzene sulfonate and sodium dodecyl sulfate, and the nonionic surfactant is selected from one or both of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

3. A cleaning agent for ship decks according to claim 1, characterized in that: The co-surfactant is an alcohol compound, selected from one or more of ethanol, isopropanol and n-butanol.

4. A cleaning agent for ship decks according to claim 1, characterized in that: The oil phase is one or more of mineral oil, vegetable oil or synthetic oil.

5. The cleaning agent for ship decks according to claim 1, characterized in that: The aqueous phase is deionized water.

6. A cleaning agent for ship decks according to claim 1, characterized in that: The stabilizer is a high molecular compound selected from one or more of polyvinyl alcohol, sodium carboxymethyl cellulose and xanthan gum.

7. A cleaning agent for ship decks according to claim 1, characterized in that: The preservative is one or both of sodium benzoate and potassium sorbate.

8. A method for preparing the cleaning agent for ship decks according to any one of claims 1 to 7, characterized in that: Including the following technical solutions: Step 1: Mix the surfactant, the co-surfactant and the oil phase, and stir evenly to obtain a mixed solution A; Step 2: Add the stabilizer and preservative into the water phase and stir evenly to obtain a mixed solution B; Step 3: Slowly add mixed solution A to mixed solution B under high-speed stirring, and continue stirring until a uniform and stable emulsion is formed; Step 4: Adjust the pH value of the emulsion to 6-8 to obtain a stable oil-in-water cleaning agent.