Multifunctional environment-friendly cleaning agent and preparation method thereof

Abstract

The invention discloses a multifunctional environment-friendly cleaning agent and a preparation method thereof, and relates to the technical field of cleaning agents. The environment-friendly rust inhibitor is prepared from the following raw materials in parts by weight: 25 to 35 parts of light white oil, 0.5 to 1.2 parts of an antioxidant, 6 to 10 parts of span SP-80, 4 to 8 parts of an improver, 3 to 5 parts of sodium citrate, 4 to 6 parts of sodium gluconate, 2 to 4 parts of an environment-friendly corrosion inhibitor, 1 to 3 parts of carboxymethyl beta-cyclodextrin, 3 to 5 parts of tea polyphenol, 2 to 4 parts of sodium lignin sulfonate, 1 to 3 parts of cellulose nanocrystals and 3 to 5 parts of cocamidopropyl betaine. 1-3 parts of a soapberry extract, and 50 parts of deionized water. The cleaning agent is environmentally friendly, safe, multifunctional, free of corrosion to cleaned objects, good in stability and remarkable in cleaning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning agents, and in particular to a multifunctional environmentally friendly cleaning agent and a preparation method thereof. Background Art

[0002] Cleaning agents are widely used in modern industrial production and daily life. However, current cleaning agents on the market suffer from numerous drawbacks. Some contain flammable and explosive low-boiling-point alcohols and hydrocarbons, such as ethanol, isopropyl alcohol, gasoline, and kerosene. This imposes extremely stringent requirements on the operating environment during use. Even the slightest negligence can lead to safety accidents, threatening the safety of operators and the stability of the production environment. Some cleaning agents are also difficult to biodegrade, and large-scale releases can cause long-term pollution to soil and water bodies. It is precisely in this context that environmentally friendly cleaning agents have emerged, attracting widespread attention within the industry.

[0003] Most existing environmentally friendly cleaning agents are limited in functionality and can only clean one or a few types of stains. They are unable to meet diverse needs such as cleaning precision electronic components, deep degreasing and rust removal of metal surfaces, anti-fogging and decontamination of glass surfaces, and simultaneous cleaning of multiple stains. Furthermore, some environmentally friendly cleaning agents on the market may corrode the surface of the object being cleaned, shortening its service life.

[0004] To address the above issues, Chinese invention patent application CN109295464B discloses a multifunctional, environmentally friendly rare earth cleaning agent and its preparation method. The multifunctional, environmentally friendly rare earth cleaning agent comprises the following components, by weight: 2-10% sulfamic acid; 3-18% organic carboxylic acid; 0.1-2% fatty alcohol polyoxyethylene ether; 1-5% corrosion inhibitor; 0.1-2% rare earth nitrate; and the remainder water. The rare earth cleaning agent achieves high descaling efficiency and low corrosion rates through the synergistic effects of sulfamic acid, organic carboxylic acid, surfactant, corrosion inhibitor, and rare earth nitrate. The cleaning agent has a wide range of applications, including cleaning heat exchangers, coolers, reactor jackets, circulating water systems, EMUs, and high-speed rail equipment. The cleaning agent produces a low residual liquid after cleaning, and the waste liquid can be used as fertilizer. Rare earth fertilizers are beneficial to plant growth and development. However, the use of rare earth nitrates can affect the stability and price of the cleaning agent.

[0005] It can be seen that the development of a multifunctional environmentally friendly cleaning agent and its preparation method that is environmentally friendly and safe, multifunctional, non-corrosive to the objects being cleaned, has good stability, and has a significant cleaning effect is of great practical significance. Summary of the Invention

[0006] The main purpose of the present invention is to provide a multifunctional environmentally friendly cleaning agent and a preparation method thereof which is environmentally friendly and safe, multifunctional, non-corrosive to the objects being cleaned, has good stability, and has a significant cleaning effect.

[0007] To achieve the above objectives, the present invention provides a multifunctional environmentally friendly cleaning agent, which is prepared from the following raw materials in parts by weight: 25-35 parts of light white oil, 0.5-1.2 parts of antioxidant, 6-10 parts of Span SP-80, 4-8 parts of improver, 3-5 parts of sodium citrate, 4-6 parts of sodium gluconate, 2-4 parts of environmentally friendly corrosion inhibitor, 1-3 parts of carboxymethyl β-cyclodextrin, 3-5 parts of tea polyphenols, 2-4 parts of sodium lignin sulfonate, 1-3 parts of cellulose nanocrystals, 3-5 parts of cocamidopropyl betaine, 1-3 parts of soapberry extract, and 50 parts of deionized water.

[0008] Preferably, the light white oil is a mixture of D100, D130, and 60N in a mass ratio of 1:(1-2):(0.8-1.2).

[0009] Preferably, the antioxidant is antioxidant ST-501.

[0010] Preferably, the improver is silicone-modified polyether.

[0011] Preferably, the silicone-modified polyether is silicone-modified polyether BYK-348.

[0012] Preferably, the environmentally friendly corrosion inhibitor is at least one of glycine and sodium glutamate.

[0013] Preferably, the degree of substitution of carboxymethyl β-cyclodextrin is 4.48.

[0014] Preferably, the cellulose nanocrystals have a length of 100-500 nm and a diameter of 20-100 nm, and are provided by Beijing Nanosun Technology Co., Ltd.

[0015] Preferably, the product specification of the soapberry extract is 70% saponin, provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0016] Another object of the present invention is to provide a method for preparing the multifunctional environmentally friendly cleaning agent, comprising the following steps: uniformly mixing the raw materials by weight, stirring at 45-55°C for 20-30 minutes, then aging at 38-42°C for 0.8-1.2 hours, adjusting the pH to 6.5-7.0, and canning to obtain the multifunctional environmentally friendly cleaning agent.

[0017] Preferably, the stirring speed is 1900-2100 rpm.

[0018] Preferably, nitrogen protection is used during the aging stage.

[0019] Due to the application of the above technical solution, the present invention has the following beneficial effects: (1) The preparation method of the multifunctional environmentally friendly cleaning agent disclosed in the present invention has a simple preparation process, convenient operation and control, low dependence on equipment, high preparation efficiency and finished product qualification rate, is suitable for continuous large-scale production, and has high promotion and application value.

[0020] (2) The multifunctional environmentally friendly cleaning agent disclosed in the present invention is made from the following raw materials in parts by weight: 25-35 parts of light white oil, 0.5-1.2 parts of antioxidant, 6-10 parts of Span SP-80, 4-8 parts of improver, 3-5 parts of sodium citrate, 4-6 parts of sodium gluconate, 2-4 parts of environmentally friendly corrosion inhibitor, 1-3 parts of carboxymethyl β-cyclodextrin, 3-5 parts of tea polyphenols, 2-4 parts of sodium lignin sulfonate, 1-3 parts of cellulose nanocrystals, 3-5 parts of cocamidopropyl betaine, 1-3 parts of soapberry extract, and 50 parts of deionized water. Through the mutual coordination and joint action of the raw materials, the functional environmentally friendly cleaning agent prepared is not only environmentally friendly and safe, but also multifunctional, non-corrosive to the objects being cleaned, and has good stability and significant cleaning effect. Span SP-80 is a highly effective nonionic surfactant that reduces liquid surface tension, allowing the detergent to spread quickly across the surface of stains. It also effectively emulsifies and disperses grease and oil stains. Cocamidopropyl betaine, a zwitterionic surfactant, synergizes with Span SP-80 to broaden its effectiveness across a wide range of stain types (e.g., oily and water-based), enhancing its cleaning power. Sapin extract, containing natural surfactants, further enhances its cleaning effectiveness across a wide range of stains, while its natural properties also make the detergent milder. Sodium citrate and sodium gluconate act as chelating agents, reacting with calcium and magnesium ions in water and oxides on metal surfaces to effectively remove stains such as scale and rust.

[0021] (3) The multifunctional environmentally friendly cleaning agent disclosed in the present invention comprises soapberry extract, tea polyphenols, and sodium lignin sulfonate, all of which are naturally derived ingredients and have good biodegradability. Carboxymethyl β-cyclodextrin and cellulose nanocrystals are not only biodegradable themselves, but also assist other ingredients in better functioning, thereby reducing the overall negative impact on the environment. It does not contain organic solvents, phosphorus, or other environmentally harmful substances, thus avoiding the eutrophication of water bodies caused by phosphorus-containing cleaning agents and the air pollution caused by the volatilization of organic solvents. The waste liquid after cleaning is environmentally friendly and can reduce the pressure on sewage treatment.

[0022] (4) The multifunctional environmentally friendly cleaning agent disclosed in the present invention, the environmentally friendly corrosion inhibitor can form a dense protective film on the metal surface, effectively isolating the metal from the components in the cleaning agent and the external environment, and inhibiting the corrosion and oxidation of the metal. When cleaning metal pipes and equipment, it can prevent the cleaning process from damaging the metal and extend the service life of the metal. Tea polyphenols have antioxidant properties and can further enhance the protection of the metal and prevent the metal from being oxidized and rusted; cellulose nanocrystals can fill the tiny gaps on the surface of the cleaned object, forming a physical protective barrier, while also helping to improve the stability and uniformity of the cleaning agent.

[0023] (5) The multifunctional environmentally friendly cleaning agent disclosed in the present invention has an intermolecular interaction between the improver and other ingredients in the formula. For example, it binds to the surfactant through hydrogen bonds, thereby enhancing the activity and stability of the surfactant; it also works synergistically with the chelating agent to enhance the chelating ability of metal ions, thereby significantly improving the overall cleaning effect. Carboxymethyl β-cyclodextrin and sodium lignin sulfonate can be used as stabilizers. They form complexes or colloids with other ingredients to prevent precipitation and stratification of the ingredients, thereby improving the stability of the cleaning agent during storage and use and extending the shelf life of the product.

[0024] (6) The multifunctional environmentally friendly cleaning agent disclosed in the present invention is prepared by adding cellulose nanocrystals to the environmentally friendly cleaning agent. The raw material has a large specific surface area and is rich in hydroxyl groups (-OH) on the surface. It can adsorb oily stains (such as grease and wax) and polar pollutants (such as dust particles) through hydrogen bonding. When compounded with other environmentally friendly surfactants, the surface hydroxyl groups can form a network structure with the hydrophilic groups of the surfactant, reducing the agglomeration of the surfactant, making it more uniformly dispersed in water, and reducing the critical micelle concentration (CMC), thereby reducing the amount of surfactant used. It can also increase the viscosity of the cleaning agent through hydrogen bonding and van der Waals force interactions between nanoparticles, avoid solute sedimentation, and will not affect the permeability of the cleaning agent. The viscosity of the cellulose nanocrystal dispersion decreases when stirred (facilitating spraying or wiping), and recovers when left to stand (preventing dripping). This thixotropy enables it to maintain adhesion when cleaning vertical surfaces (such as walls and car windows), prolonging the action time and improving the cleaning efficiency. DETAILED DESCRIPTION

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations. Example 1

[0026] A multifunctional environmentally friendly cleaning agent is prepared from the following raw materials in parts by weight: 25 parts of light white oil, 0.5 parts of antioxidant, 6 parts of Span SP-80, 4 parts of improver, 3 parts of sodium citrate, 4 parts of sodium gluconate, 2 parts of environmentally friendly corrosion inhibitor, 1 part of carboxymethyl β-cyclodextrin, 3 parts of tea polyphenols, 2 parts of sodium lignin sulfonate, 1 part of cellulose nanocrystals, 3 parts of cocamidopropyl betaine, 1 part of soapberry extract, and 50 parts of deionized water.

[0027] The light white oil model is D100, D130, and 60N, mixed in a mass ratio of 1:1:0.8; the antioxidant is antioxidant ST-501; the improver is silicone-modified polyether; the silicone-modified polyether is silicone-modified polyether BYK-348; the environmentally friendly corrosion inhibitor is glycine; the degree of substitution of carboxymethyl β-cyclodextrin is 4.48; the cellulose nanocrystals have a length of 100-500nm and a diameter of 20-100nm, and are provided by Beijing Naxun Technology Co., Ltd.; the product specification of the soapberry extract is 70% saponins, and is provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0028] A preparation method of the multifunctional environmentally friendly cleaning agent comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 45°C for 20 minutes, then aging at 38°C for 0.8 hours, adjusting the pH to 6.5, and canning to obtain the multifunctional environmentally friendly cleaning agent; the stirring speed is 1900 rpm; and nitrogen protection is used during the aging stage. Example 2

[0029] A multifunctional environmentally friendly cleaning agent is prepared from the following raw materials in parts by weight: 27 parts of light white oil, 0.7 parts of antioxidant, 7 parts of Span SP-80, 5 parts of improver, 3.5 parts of sodium citrate, 4.5 parts of sodium gluconate, 2.5 parts of environmentally friendly corrosion inhibitor, 1.5 parts of carboxymethyl β-cyclodextrin, 3.5 parts of tea polyphenols, 2.5 parts of sodium lignin sulfonate, 1.5 parts of cellulose nanocrystals, 3.5 parts of cocamidopropyl betaine, 1.5 parts of soapberry extract, and 50 parts of deionized water.

[0030] The light white oil model is D100, D130, and 60N, which are mixed in a mass ratio of 1:1.2:0.9; the antioxidant is antioxidant ST-501; the improver is silicone-modified polyether; the silicone-modified polyether is silicone-modified polyether BYK-348; the environmentally friendly corrosion inhibitor is sodium glutamate; the degree of substitution of carboxymethyl β-cyclodextrin is 4.48; the cellulose nanocrystals have a length of 100-500nm and a diameter of 20-100nm, and are provided by Beijing Naxun Technology Co., Ltd.; the product specification of the soapberry extract is 70% saponins, and is provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0031] A preparation method of the multifunctional environmentally friendly cleaning agent comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 47°C for 23 minutes, then aging at 39°C for 0.9 hours, adjusting the pH to 6.6, and canning to obtain the multifunctional environmentally friendly cleaning agent; the stirring speed is 1950 rpm; and nitrogen protection is used during the aging stage. Example 3

[0032] A multifunctional environmentally friendly cleaning agent is prepared from the following raw materials in parts by weight: 30 parts of light white oil, 0.9 parts of antioxidant, 8 parts of Span SP-80, 6 parts of improver, 4 parts of sodium citrate, 5 parts of sodium gluconate, 3 parts of environmentally friendly corrosion inhibitor, 2 parts of carboxymethyl β-cyclodextrin, 4 parts of tea polyphenols, 3 parts of sodium lignin sulfonate, 2 parts of cellulose nanocrystals, 4 parts of cocamidopropyl betaine, 2 parts of soapberry extract, and 50 parts of deionized water.

[0033] The light white oil model is D100, D130, and 60N, mixed in a mass ratio of 1:1.5:1; the antioxidant is antioxidant ST-501; the improver is silicone-modified polyether; the silicone-modified polyether is silicone-modified polyether BYK-348; the environmentally friendly corrosion inhibitor is glycine; the degree of substitution of carboxymethyl β-cyclodextrin is 4.48; the cellulose nanocrystals have a length of 100-500nm and a diameter of 20-100nm, and are provided by Beijing Naxun Technology Co., Ltd.; the product specification of the soapberry extract is 70% saponins, and is provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0034] A preparation method of the multifunctional environmentally friendly cleaning agent comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 50°C for 25 minutes, then aging at 40°C for 1 hour, adjusting the pH to 6.7, and canning to obtain the multifunctional environmentally friendly cleaning agent; the stirring speed is 2000 rpm; and nitrogen protection is used during the aging stage. Example 4

[0035] A multifunctional environmentally friendly cleaning agent is prepared from the following raw materials in parts by weight: 33 parts of light white oil, 1.1 parts of antioxidant, 9.5 parts of Span SP-80, 7.5 parts of improver, 4.5 parts of sodium citrate, 5.5 parts of sodium gluconate, 3.5 parts of environmentally friendly corrosion inhibitor, 2.5 parts of carboxymethyl β-cyclodextrin, 4.5 parts of tea polyphenols, 3.5 parts of sodium lignin sulfonate, 2.5 parts of cellulose nanocrystals, 4.5 parts of cocamidopropyl betaine, 2.5 parts of soapberry extract, and 50 parts of deionized water.

[0036] The light white oil models are D100, D130, and 60N, which are mixed in a mass ratio of 1:1.8:1.1; the antioxidant is antioxidant ST-501; the improver is silicone-modified polyether; the silicone-modified polyether is silicone-modified polyether BYK-348; the environmentally friendly corrosion inhibitor is glycine and sodium glutamate, which are mixed in a mass ratio of 1:2; the degree of substitution of carboxymethyl β-cyclodextrin is 4.48; the cellulose nanocrystals have a length of 100-500nm and a diameter of 20-100nm, and are provided by Beijing Naxun Technology Co., Ltd.; the product specification of the soapberry extract is 70% saponins, and is provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0037] A preparation method of the multifunctional environmentally friendly cleaning agent comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 53°C for 28 minutes, then aging at 41°C for 1.1 hours, adjusting the pH to 6.9, and canning to obtain the multifunctional environmentally friendly cleaning agent; the stirring speed is 2050 rpm; and nitrogen protection is used during the aging stage. Example 5

[0038] A multifunctional environmentally friendly cleaning agent is prepared from the following raw materials in parts by weight: 35 parts of light white oil, 1.2 parts of an antioxidant, 10 parts of Span SP-80, 8 parts of an improver, 5 parts of sodium citrate, 6 parts of sodium gluconate, 4 parts of an environmentally friendly corrosion inhibitor, 3 parts of carboxymethyl β-cyclodextrin, 5 parts of tea polyphenols, 4 parts of sodium lignin sulfonate, 3 parts of cellulose nanocrystals, 5 parts of cocamidopropyl betaine, 3 parts of soapberry extract, and 50 parts of deionized water.

[0039] The light white oil model is D100, D130, and 60N, mixed in a mass ratio of 1:2:1.2; the antioxidant is antioxidant ST-501; the improver is silicone-modified polyether; the silicone-modified polyether is silicone-modified polyether BYK-348; the environmentally friendly corrosion inhibitor is glycine; the degree of substitution of carboxymethyl β-cyclodextrin is 4.48; the cellulose nanocrystals have a length of 100-500nm and a diameter of 20-100nm, and are provided by Beijing Naxun Technology Co., Ltd.; the product specification of the soapberry extract is 70% saponins, and is provided by Hunan Langlin Biological Resources Co., Ltd., and the Langlin number is NAT-224.

[0040] A preparation method of the multifunctional environmentally friendly cleaning agent comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 55°C for 30 minutes, then aging at 42°C for 1.2 hours, adjusting the pH to 7.0, and canning to obtain the multifunctional environmentally friendly cleaning agent; the stirring speed is 2100 rpm; and nitrogen protection is used during the aging stage.

[0041] Comparative Example 1 A multifunctional environmentally friendly cleaning agent and a preparation method thereof are substantially the same as those in Example 1, except that no cellulose nanocrystals are added.

[0042] Comparative Example 2 A multifunctional environmentally friendly cleaning agent and a preparation method thereof are substantially the same as those in Example 1, except that carboxymethyl β-cyclodextrin and tea polyphenols are not added.

[0043] In order to further illustrate the beneficial technical effects of the multifunctional environmentally friendly cleaning agents involved in the embodiments of the present invention, relevant performance tests were conducted on the multifunctional environmentally friendly cleaning agents involved in Examples 1-5 and Comparative Examples 1-2. The test results are shown in Table 1. The test method is as follows: each cleaning agent was prepared into a 3% solution with deionized water; with reference to GB / T 35759-2017 "Metal Cleaners", the 3% (mass fraction) aqueous solution was tested for cleaning power at 60°C and corrosion of 45 steel at 80°C for 2 hours.

[0044] Table 1 Performance test results of multifunctional environmentally friendly cleaning agent project Cleaning power Corrosion amount unit % mg Example 1 99.68 0.25 Example 2 99.75 0.20 Example 3 99.80 0.17 Example 4 99.92 0.10 Example 5 99.98 0.09 Comparative Example 1 93.79 1.10 Comparative Example 2 95.27 1.62 As can be seen from Table 1, the multifunctional environmentally friendly cleaning agent disclosed in the embodiment of the present invention cleans better and is less corrosive than the comparative example product; the combined addition of cellulose nanocrystals, carboxymethyl β-cyclodextrin and tea polyphenols is beneficial to improving the above performance.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional environmentally friendly cleaning agent, characterized in that: The invention is prepared from the following raw materials in parts by weight: 25-35 parts of light white oil, 0.5-1.2 parts of antioxidant, 6-10 parts of Span SP-80, 4-8 parts of improver, 3-5 parts of sodium citrate, 4-6 parts of sodium gluconate, 2-4 parts of environmentally friendly corrosion inhibitor, 1-3 parts of carboxymethyl beta-cyclodextrin, 3-5 parts of tea polyphenols, 2-4 parts of sodium lignin sulfonate, 1-3 parts of cellulose nanocrystals, 3-5 parts of cocamidopropyl betaine, 1-3 parts of soapberry extract and 50 parts of deionized water.

2. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The light white oil is prepared by mixing D100, D130 and 60N in a mass ratio of 1:(1-2):(0.8-1.2).

3. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The antioxidant is antioxidant ST-501.

4. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The improver is silicone modified polyether.

5. The multifunctional environmentally friendly cleaning agent according to claim 4, characterized in that: The silicone modified polyether is silicone modified polyether BYK-348.

6. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The environmentally friendly corrosion inhibitor is at least one of glycine and sodium glutamate.

7. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The degree of substitution of carboxymethyl β-cyclodextrin is 4.

48.

8. The multifunctional environmentally friendly cleaning agent according to claim 1, characterized in that: The length of the cellulose nanocrystal is 100-500 nm and the diameter is 20-100 nm; the product specification of the soapberry extract is 70% saponin.

9. A method for preparing the multifunctional environmentally friendly cleaning agent according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: uniformly mixing the raw materials according to parts by weight, stirring at 45-55 DEG C for 20-30 minutes, aging at 38-42 DEG C for 0.8-1.2 hours, adjusting the pH to 6.5-7.0, and canning to obtain a multifunctional environmentally friendly cleaning agent.

10. The method for preparing the multifunctional environmentally friendly cleaning agent according to claim 9, characterized in that: The stirring speed is 1900-2100 rpm; nitrogen protection is used during the aging stage.