Environment-friendly low-temperature anti-fog automobile glass oil-removing film agent and preparation method thereof

Abstract

The invention relates to the technical field of glass oil-removing film agents, in particular to an environment-friendly low-temperature anti-fog automobile glass oil-removing film agent and a preparation method thereof. The environment-friendly low-temperature anti-fog automobile glass oil-removing film agent is prepared from the following raw materials in parts by mass: 10 to 30 parts of alcohol substances, 0.5 to 10 parts of cerium oxide, 2 to 6 parts of sodium lignin sulfonate, 1 to 3 parts of hyperbranched polyamidoamine, 2 to 6 parts of sodium polyaspartate, 1 to 3 parts of sodium silicate, 1 to 2 parts of sodium tripolyphosphate, 1 to 2 parts of secondary alkyl sodium sulfonate, 5 to 10 parts of sodium dodecyl benzene sulfonate and 1 to 3 parts of polyacrylamide. 1-2 parts of an amino acid surfactant, 1-10 parts of a stabilizer, 3-14 parts of an ionic liquid activator and 50-90 parts of water. According to the invention, the phenomenon that dirt is easy to deposit and gather can be remarkably improved, the dirt can be effectively wrapped, the cleaning agent has a remarkable decontamination effect and good cleaning efficiency at low temperature, meanwhile, good light transmittance is ensured, and the anti-fog effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of glass degreasing agents, and in particular to an environmentally friendly low-temperature anti-fogging automobile glass degreasing agent and a preparation method thereof. Background Art

[0002] With the advancement of science and technology and people's attention to environmental issues, environmentally friendly degreasing agents have been widely studied and replaced traditional cleaning agents containing raw materials such as gasoline. Automobile glass degreasing agents are special agents for cleaning automobile windshields. They are used to remove oil stains, shellac, etc. on windshields, and have certain anti-fog and anti-frost functions. At present, in order to achieve the required cleaning ability and a longer shelf life, a large amount of surfactants and preservatives are added to automobile glass cleaning agents, which cause certain harm to the human body.

[0003] CN111849652A discloses an environmentally friendly foam-free water-based cleaning agent and a preparation method thereof. The environmentally friendly foam-free water-based cleaning agent includes the following components and their mass percentages: amine base 4.0-7.0%, foam suppressant and solubilizer 2.0-5.0%, foam suppressant 1.0-3.0%, solvent 2.0-5.0%, and the rest is deionized water. It has good solubility for cleaning flux solder paste residues and lubricating oil after soldering, can effectively remove dirt from the inner cavity furnace and accessories of furnace jigs, wave crest furnaces and reflow furnaces, and has good compatibility, but usually generates a lot of foam during use.

[0004] CN103614251A A car glass cleaning agent for removing stubborn stains. The car glass cleaning agent for removing stubborn stains is prepared by mixing the following raw materials in parts by weight: 2-6 parts of a surfactant; 0.5-1 part of a water-soluble ionic liquid; 10-20 parts of a stabilizer; 60-70 parts of a diluent; and 0.2-0.5 parts of a defoaming agent. The car glass cleaning agent can effectively remove dust, bird droppings, and stubborn stains formed by collision of animals and insects on the surfaces of a car windshield and headlight glass. The car glass cleaning agent not only contains a large amount of a surfactant, but also the added defoaming agent is very likely to affect the decontamination effect.

[0005] CN105132222A discloses a low surface tension automobile glass cleaning agent, which is composed of the following raw materials in parts by weight: 46-76.5 parts of low surface tension activated water, 23-53 parts of antifreeze degreasing agent, 0.1-0.5 parts of nonionic surfactant, 0.1-0.3 parts of anionic surfactant, 0.1-0.2 parts of corrosion inhibitor, 0.1-0.5 parts of lubricant, and 0.1-0.2 parts of anticorrosive and antifungal agent. The low surface tension activated water used can fully wet the glass surface and clean more stains.

[0006] Existing automotive glass degreasing agents are very likely to freeze when used in low-temperature environments, making it impossible to clean the car windows. In addition, when the car is driving in a specific environment, the fog formed on the car glass can also cause accidents. At the same time, water droplets are easily condensed on the surface of the car glass, making its light transmission performance poor and prone to vehicle failures. The solvent of water-based degreasing agents is water, which makes it difficult to clean the grease and animal and plant colloids attached to the surface of the car glass. Organic solvents must be added to enhance the solubility of the cleaning agent for dirt.

[0007] The preparation of a water-based degreasing film agent that is not only environmentally friendly but also has excellent low-temperature degreasing effect has become a technical problem that needs to be solved. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an environmentally friendly low-temperature anti-fog automobile glass oil film remover and a preparation method thereof.

[0009] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent. The raw materials thereof include, by weight, 10-30 parts of alcohol substances, 0.5-10 parts of cerium oxide, 2-6 parts of sodium lignin sulfonate, 1-3 parts of hyperbranched polyamidoamine, 2-6 parts of sodium polyaspartate, 1-3 parts of sodium silicate, 1-2 parts of sodium tripolyphosphate, 1-2 parts of sodium secondary alkyl sulfonate, 5-10 parts of sodium dodecylbenzene sulfonate, 1-3 parts of polyacrylamide, 1-2 parts of amino acid surfactant, 1-10 parts of stabilizer, 3-14 parts of ionic liquid activator and 50-90 parts of water.

[0010] Preferably, the alcohol substance is at least one of ethanol, ethylene glycol, glycerol and isopropanol.

[0011] Preferably, the particle size of cerium oxide is 100 nm-10 μm.

[0012] Preferably, the number of generations of the hyperbranched polyamidoamine is 2.0 to 4.0.

[0013] Preferably, the ionic liquid activator is 1-butyl-3-methylimidazolium tetrafluoroborate.

[0014] Preferably, the stabilizer comprises: polyvinyl alcohol and grafted chitosan; the mass ratio of polyvinyl alcohol to grafted chitosan is 1-3:1-2.

[0015] Preferably, grafted chitosan is prepared by the following steps: adding polylysine to an ethanol solution and stirring evenly, adding 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and N-hydroxysuccinimide thereto, stirring at 40-60° C. for 1-2 hours, adding chitosan thereto and continuing stirring for 20-40 hours, centrifuging, dialyzing, washing, and vacuum drying.

[0016] More preferably, the mass ratio of polylysine, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, N-hydroxysuccinimide and chitosan is 2-4:0.1-0.2:0.1-1:5-10.

[0017] More preferably, the mass fraction of the ethanol solution is 40-60%.

[0018] More preferably, the dialysis is performed using a dialysis membrane with a molecular weight cutoff of 2 kDa.

[0019] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, amino acid surfactant, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding alcohol substances and mixing evenly.

[0020] Beneficial effects:

[0021] The present invention adopts sodium lignin sulfonate, hyperbranched polyamide amine and sodium polyaspartic acid to compound, and controls the ratio of the three and the proportion of the three in the system, which can not only significantly improve the phenomenon that dirt is easy to deposit and accumulate, but also the compound of hyperbranched polyamide amine and sodium polyaspartic acid can effectively wrap the dirt, has a significant decontamination effect, and has good cleaning efficiency at low temperatures, while ensuring good light transmittance, good anti-fog effect, and can also remove fine scratches on the glass surface, having a certain repair effect.

[0022] In the grafted chitosan used in the present invention, polylysine is combined on the surface of chitosan, and with the action of a surface tension regulator (sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, and amino acid surfactant), it can not only effectively penetrate into the tiny gaps of dirt and stains, but also weaken the adhesion of dirt and stains on the glass. The grafted chitosan, polyacrylamide, and amino acid compounds form an intertwined network structure, which effectively aggregates the wetted dirt and stains, and further thoroughly removes the dirt and stains under the action of hyperbranched polyamidoamine and sodium polyaspartic acid, and the effect of rapid cleaning can be achieved even in a low-temperature environment.

[0023] The present invention utilizes grafted chitosan and a surface tension regulator to effectively improve the stability of the formed liquid film, especially the stability at low temperatures. At the same time, it is not easy to freeze even when stored at a relatively low temperature, and is suitable for cleaning glass in cold weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The curves showing the change of foam height over time of the environmentally friendly low-temperature anti-fog automobile glass degreasing agent obtained in Example 5 and Comparative Examples 1-2 are shown.

[0025] Figure 2 The decontamination rate changes with temperature after cleaning with the environmentally friendly low-temperature anti-fog automobile glass degreasing film agent obtained in Example 5 and Comparative Examples 1-2.

[0026] Figure 3 The curves of light transmittance changing with temperature after cleaning with the environmentally friendly low-temperature anti-fog automobile glass degreasing film agent obtained in Example 5 and Comparative Examples 1-2 are shown. DETAILED DESCRIPTION

[0027] The present invention will be further explained below in conjunction with specific embodiments.

[0028] The sodium secondary alkyl sulfonate (SAS-60) used below was purchased from Jinan Daorong Chemical Co., Ltd. The average particle size of the cerium oxide used below was 1 μm.

[0029] Example 1

[0030] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent. The raw materials thereof include: 100 g of ethylene glycol, 0.5 g of cerium oxide, 20 g of sodium lignin sulfonate, 10 g of 2.0 generation hyperbranched polyamidoamine, 20 g of sodium polyaspartate, 10 g of sodium silicate, 10 g of sodium tripolyphosphate, 10 g of sodium secondary alkyl sulfonate, 50 g of sodium dodecylbenzene sulfonate, 10 g of polyacrylamide, 10 g of tetrasodium salt of N,N-bis(carboxymethyl)-L-glutamic acid, 10 g of a stabilizer, 30 g of 1-butyl-3-methylimidazole tetrafluoroborate and 500 g of water.

[0031] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 1:1. The grafted chitosan is prepared by the following steps: 20g of polylysine is added to 200g of 40% ethanol solution and stirred evenly, 1g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 1g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 40°C for 1h, 50g of chitosan is added thereto, and stirring is continued for 20h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0032] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding ethylene glycol and mixing evenly.

[0033] Example 2

[0034] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent. The raw materials thereof include: 300 g of glycerol, 10 g of cerium oxide, 60 g of sodium lignin sulfonate, 30 g of 4.0 generation hyperbranched polyamidoamine, 60 g of sodium polyaspartate, 30 g of sodium silicate, 20 g of sodium tripolyphosphate, 20 g of sodium secondary alkyl sulfonate, 100 g of sodium dodecylbenzene sulfonate, 30 g of polyacrylamide, 20 g of tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, 100 g of a stabilizer, 140 g of 1-butyl-3-methylimidazole tetrafluoroborate and 900 g of water.

[0035] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 3:2. The grafted chitosan is prepared by the following steps: 40g of polylysine is added to 400g of 60% ethanol solution and stirred evenly, 2g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 10g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 60°C for 2h, 100g of chitosan is added thereto and stirred for 40h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0036] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding glycerol and mixing evenly.

[0037] Example 3

[0038] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent, wherein the raw materials thereof include: 150 g of isopropyl alcohol, 2 g of cerium oxide, 50 g of sodium lignin sulfonate, 25 g of 2.5-generation hyperbranched polyamidoamine, 30 g of sodium polyaspartate, 25 g of sodium silicate, 12 g of sodium tripolyphosphate, 18 g of sodium secondary alkyl sulfonate, 70 g of sodium dodecylbenzene sulfonate, 25 g of polyacrylamide, 13 g of tetrasodium salt of N,N-bis(carboxymethyl)-L-glutamic acid, 80 g of a stabilizer, 60 g of 1-butyl-3-methylimidazole tetrafluoroborate, and 800 g of water.

[0039] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 1.5:1.7. The grafted chitosan is prepared by the following steps: 25g of polylysine is added to 350g of 45% ethanol solution and stirred evenly, 1.7g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 2g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 55°C for 80min, 90g of chitosan is added thereto, and stirring is continued for 25h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0040] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding isopropanol and mixing evenly.

[0041] Example 4

[0042] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent, wherein the raw materials thereof include: 250 g of ethanol, 8 g of cerium oxide, 30 g of sodium lignin sulfonate, 15 g of 3.5-generation hyperbranched polyamidoamine, 50 g of sodium polyaspartate, 15 g of sodium silicate, 18 g of sodium tripolyphosphate, 12 g of sodium secondary alkyl sulfonate, 90 g of sodium dodecylbenzene sulfonate, 15 g of polyacrylamide, 17 g of tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, 20 g of a stabilizer, 100 g of 1-butyl-3-methylimidazole tetrafluoroborate and 600 g of water.

[0043] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 2.5:1.3. The grafted chitosan is prepared by the following steps: 35g of polylysine is added to 250g of 55% ethanol solution and stirred evenly, 1.3g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 8g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 45°C for 100min, 70g of chitosan is added thereto and stirred for 35h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0044] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding ethanol and mixing evenly.

[0045] Example 5

[0046] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent, wherein the raw materials thereof include: 200 g of ethanol, 5 g of cerium oxide, 40 g of sodium lignin sulfonate, 20 g of 3.0 generation hyperbranched polyamidoamine, 40 g of sodium polyaspartate, 20 g of sodium silicate, 15 g of sodium tripolyphosphate, 15 g of sodium secondary alkyl sulfonate, 80 g of sodium dodecylbenzene sulfonate, 20 g of polyacrylamide, 15 g of tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, 50 g of a stabilizer, 80 g of 1-butyl-3-methylimidazole tetrafluoroborate and 700 g of water.

[0047] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 2:1.5. The grafted chitosan is prepared by the following steps: 30g of polylysine is added to 300g of 50% ethanol solution and stirred evenly, 1.5g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 5g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 50°C for 90min, 80g of chitosan is added thereto and stirred for 30h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0048] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding ethanol and mixing evenly.

[0049] Comparative Example 1

[0050] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent, wherein the raw materials thereof include: 200 g of ethanol, 5 g of cerium oxide, 40 g of sodium lignin sulfonate, 60 g of sodium polyaspartate, 20 g of sodium silicate, 15 g of sodium tripolyphosphate, 15 g of sodium secondary alkyl sulfonate, 80 g of sodium dodecylbenzene sulfonate, 20 g of polyacrylamide, 15 g of tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, 50 g of a stabilizer, 80 g of 1-butyl-3-methylimidazole tetrafluoroborate and 700 g of water.

[0051] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 2:1.5. The grafted chitosan is prepared by the following steps: 30g of polylysine is added to 300g of 50% ethanol solution and stirred evenly, 1.5g of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 5g of N-hydroxysuccinimide are added thereto, stirred at a temperature of 50°C for 90min, 80g of chitosan is added thereto and stirred for 30h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0052] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding ethanol and mixing evenly.

[0053] Comparative Example 2

[0054] The invention discloses an environmentally friendly low-temperature anti-fog automobile glass degreasing agent, wherein the raw materials thereof include: 200 g of ethanol, 5 g of cerium oxide, 40 g of sodium lignin sulfonate, 20 g of 3.0 generation hyperbranched polyamidoamine, 40 g of sodium polyaspartate, 20 g of sodium silicate, 15 g of sodium tripolyphosphate, 15 g of sodium secondary alkyl sulfonate, 80 g of sodium dodecylbenzene sulfonate, 20 g of polyacrylamide, 15 g of tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, 50 g of a stabilizer, 80 g of 1-butyl-3-methylimidazole tetrafluoroborate and 700 g of water.

[0055] The stabilizer is composed of polyvinyl alcohol and grafted chitosan in a mass ratio of 2:1.5. The grafted chitosan is prepared by the following steps: 30g of polylysine is added to 300g of 50% ethanol solution and stirred evenly, 80g of chitosan is added thereto and stirred for 30h, centrifuged, dialyzed with a dialysis membrane with a molecular weight cutoff of 2kDa, washed with deionized water, and vacuum dried.

[0056] The preparation method of the above-mentioned environmentally friendly low-temperature anti-fog automobile glass oil film remover comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamide amine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, stabilizer, and ionic liquid activator into water and mixing evenly, and then adding ethanol and mixing evenly.

[0057] The environmentally friendly low-temperature anti-fog automobile glass degreasing film agent obtained in Example 5 and Comparative Examples 1-2 was subjected to a stability test, specifically as follows:

[0058] (1) Add 50 mL of each sample into a test tube and place it in a 60°C oven. Take it out after 24 hours and check whether there is turbidity, stratification, or crystallization.

[0059] (2) Add 50 mL of each sample into a test tube and place it in a -15°C refrigerator. Take it out after 24 hours and check whether it is frozen.

[0060] Example 5 Comparative Example 1 Comparative Example 2 High temperature stability No turbidity, separation or crystallization No turbidity, separation or crystallization No turbidity, separation or crystallization Low temperature stability No ice freeze freeze

[0061] The above results confirm that the environmentally friendly low-temperature anti-fog automobile glass degreasing agent obtained in Example 5 has excellent high or low temperature stability.

[0062] The shake bottle volume method was used to determine the foam generation of the environmentally friendly low-temperature anti-fog automotive glass degreasing agent obtained in Example 5 and Comparative Examples 1-2, as follows: 50 mL of each group of samples was poured into a 250 mL stoppered measuring cylinder, the bottle mouth was sealed with plastic wrap to prevent the solution from splashing, and the bottle was shaken evenly for 120 times. After the shaking was completed, the initial, 5 min, and 10 min foam heights were immediately recorded.

[0063] like Figure 1 As shown, the initial foam heights of each group are similar, but the foam height of the environmentally friendly low-temperature anti-fog automobile glass degreasing agent obtained in Example 5 drops rapidly, and the foam height can be reduced to less than 20 mm within 5 minutes, meeting the requirements of low-foam cleaning.

[0064] Glass substrates with artificial oil stains were used as test objects, and were immersed in 100 mL of the environmentally friendly low-temperature anti-fog automobile glass degreasing agent obtained in Example 5 and Comparative Examples 1-2 for ultrasonic cleaning for 5 minutes at different temperatures of -5°C, 0°C, 25°C, and 40°C.

[0065] like Figure 2 and Figure 3 As shown, as the temperature increases, the cleaning effects of the three on oil stains are enhanced. However, the cleaning effect of the environmentally friendly low-temperature anti-fog automobile glass degreasing agent obtained in Example 5 is better than that of Comparative Examples 1-2 at all temperatures (P < 0.05), and the cleaning effect at low temperatures (-5°C and 0°C) is significantly better than that of Comparative Examples 1-2 (P < 0.01).

[0066] The applicant believes that the reason for the above results is that the present invention adopts a compound of sodium lignin sulfonate, hyperbranched polyamide amine, and sodium polyaspartic acid, and controls the ratio of the three and the proportion in the system, which can not only significantly improve the phenomenon that dirt is easily deposited and aggregated, but also the compound of hyperbranched polyamide amine and sodium polyaspartic acid can effectively wrap the dirt, which has both a significant decontamination effect and a good cleaning efficiency at low temperatures, while ensuring good light transmittance and a good anti-fog effect. In the grafted chitosan used in the present invention, polylysine is combined on the surface of chitosan, and the surface tension regulator (sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, amino acid type surfactant) is used to effectively penetrate into the small gaps of dirt and stains, and the adhesion of dirt and stains on the glass can be weakened. The grafted chitosan, polyacrylamide, and amino acid compounds form a mutually entangled network structure, which effectively aggregates the dirt and stains after wetting, and further removes the dirt and stains thoroughly under the action of hyperbranched polyamide amine and sodium polyaspartate, and the effect of rapid cleaning can still be achieved even in a low temperature environment. At the same time, the present invention utilizes grafted chitosan and a surface tension regulator to effectively improve the stability of the formed liquid film, especially the stability at low temperatures. At the same time, it is not easy to freeze even when stored at a relatively low temperature, and is suitable for cleaning glass in cold weather.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmentally friendly low-temperature anti-fog automobile glass degreasing agent, characterized in that: The raw materials include, by mass, 10-30 parts of alcohols, 0.5-10 parts of cerium oxide, 2-6 parts of sodium lignin sulfonate, 1-3 parts of hyperbranched polyamidoamine, 2-6 parts of sodium polyaspartate, 1-3 parts of sodium silicate, 1-2 parts of sodium tripolyphosphate, 1-2 parts of sodium secondary alkyl sulfonate, 5-10 parts of sodium dodecylbenzene sulfonate, 1-3 parts of polyacrylamide, 1-2 parts of amino acid surfactant, 1-10 parts of stabilizer, 3-14 parts of ionic liquid activator and 50-90 parts of water.

2. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 1, characterized in that: The alcohol substance is at least one of ethanol, ethylene glycol, glycerol and isopropanol.

3. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 1, characterized in that: The generation number of the hyperbranched polyamidoamine is 2.0-4.0 generations.

4. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 1, characterized in that: The ionic liquid activator was 1-butyl-3-methylimidazolium tetrafluoroborate.

5. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 1, characterized in that: The stabilizer comprises: polyvinyl alcohol and grafted chitosan; the mass ratio of polyvinyl alcohol to grafted chitosan is 1-3:1-2.

6. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 5, characterized in that: The grafted chitosan is prepared by the following steps: adding polylysine to an ethanol solution and stirring evenly, adding 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and N-hydroxysuccinimide thereto, stirring at 40-60° C. for 1-2 hours, adding chitosan thereto and continuing stirring for 20-40 hours, centrifuging, dialysis, washing, and vacuum drying.

7. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 6, characterized in that: The mass ratio of polylysine, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, N-hydroxysuccinimide and chitosan is 2-4:0.1-0.2:0.1-1:5-10.

8. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 6, characterized in that: The mass fraction of the ethanol solution is 40-60%.

9. The environmentally friendly low-temperature anti-fog automobile glass degreasing agent according to claim 6, characterized in that: Dialysis was performed using a dialysis membrane with a molecular weight cutoff of 2 kDa.

10. A method for preparing the environmentally friendly low-temperature anti-fogging automobile glass oil film remover according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: adding cerium oxide, sodium lignin sulfonate, hyperbranched polyamidoamine, sodium polyaspartate, sodium silicate, sodium tripolyphosphate, sodium secondary alkyl sulfonate, sodium dodecylbenzene sulfonate, polyacrylamide, amino acid surfactant, stabilizer and ionic liquid activator into water and mixing evenly, and then adding alcohol substances and mixing evenly.

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