A motor vehicle sewage pipe cleaning agent and its preparation method and application

Abstract

The present invention proposes a motor vehicle sewage pipe cleaning agent and a preparation method and application thereof, belonging to the technical field of cleaning agents. Silane coupling agent is used to modify silicon dioxide, and then react with epichlorohydrin, and then react with alkyl polyglycoside, and then react with alkyl polyglycoside, and the obtained product is mixed with anionic surfactant, aminosulfonic acid, and citric acid to obtain a motor vehicle sewage pipe cleaning agent. The motor vehicle sewage pipe cleaning agent prepared by the present invention has the characteristics of being degradable, green, environmentally friendly, low in toxicity, and mild, has strong detergency, high descaling rate, synergistic decontamination effect between components, low corrosiveness, and has broad application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents, and in particular to a motor vehicle sewage pipe cleaning agent and a preparation method and application thereof. Background Art

[0002] With the continuous development of the economy and society, rail transit trains have become the main means of transportation in today's society. At present, high-speed trains mainly adopt independent manufacturing standards. High-speed trains that adopt independent manufacturing standards are equipped with toilet systems to provide services for passengers, which can well meet the needs of passengers. However, the toilet system of high-speed trains will be used frequently during operation, generating a large amount of domestic garbage and excrement. When the train enters the station, the garbage is discharged through the sewage pipe. After discharge, the sewage pipe needs to be cleaned. There are many cleaning methods at present, and cleaning agents are used to remove adhesions attached to the surface.

[0003] The current sewage pipe cleaning agent has insufficient cleaning ability and cannot quickly and efficiently dissolve and clean the stains on the sewage pipe, especially the dirt in the corners. Therefore, the stains on the pipes are deposited over the years, which easily causes clogging and affects the operation of the line. In addition, the usual cleaning agent is liquid, which is not easy to carry, which brings difficulties to practical application. Summary of the invention

[0004] The purpose of the present invention is to provide a motor vehicle sewage pipe cleaning agent and its preparation method and application, which has the characteristics of being degradable, green, environmentally friendly, low-toxic and mild, with strong detergency, high scale removal rate, synergistic decontamination effect between components, low corrosiveness, and broad application prospects.

[0005] The technical solution of the present invention is achieved in this way:

[0006] The invention provides a method for preparing a motor vehicle sewage pipeline cleaning agent. The method comprises the steps of modifying silicon dioxide with a silane coupling agent, reacting the modified silicon dioxide with epichlorohydrin, reacting the modified silicon dioxide with an alkyl polyglycoside, and then reacting the modified silicon dioxide with an alkyl polyglycoside. The obtained product is uniformly mixed with anionic surfactant, aminosulfonic acid and citric acid to prepare the motor vehicle sewage pipeline cleaning agent.

[0007] As a further improvement of the present invention, the following steps are included:

[0008] S1. Preparation of silane coupling agent modified silica: adding alkyl orthosilicate to ethanol, adding a mixture of ammonia and water dropwise, stirring to react, filtering, washing, adding the solid to alcohol, adding a silane coupling agent, heating and stirring to react, filtering, washing, and drying to obtain silane coupling agent modified silica;

[0009] S2. Reaction with epichlorohydrin: The silane coupling agent-modified silica was added to dichloromethane, epichlorohydrin was added, the reaction was stirred at room temperature, filtered, washed, and dried to obtain chlorinated modified silica;

[0010] S3. Reaction with an alkyl glycoside: The chlorinated modified silica and an alkyl glycoside are reacted to obtain a glycoside-modified silica;

[0011] S4. Reaction with butane sultone: The glycoside-modified silica and butane sultone are reacted to obtain modified silica;

[0012] S5. Compounding: Evenly mix the modified silica, anionic surfactant, aminosulfonic acid and citric acid to prepare the cleaning agent for the sewage pipe of a motor vehicle.

[0013] As a further improvement of the present invention, the alkyl orthosilicate in step S1 is methyl orthosilicate or ethyl orthosilicate, the mass ratio of the alkyl orthosilicate, ethanol, ammonia water and water is 10-15:75-105:7-10:4-8, the stirring reaction time is 10-12h, the mass ratio of the solid and the silane coupling agent is 10-12:2-3, the silane coupling agent is selected from at least one of KH550, KH602, and KH792, the temperature of the heating and stirring reaction is 45-55°C, and the time is 1-3h.

[0014] As a further improvement of the present invention, in step S2, the mass ratio of the silane coupling agent-modified silica to epichlorohydrin is 10:3-4, and the reaction time under room temperature stirring is 3-5 hours.

[0015] As a further improvement of the present invention, the mass ratio of the chlorinated modified silicon dioxide to the alkyl glycoside in step S3 is 10:7-9, the reaction time is 7-10 hours, and the alkyl glycoside is butyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride or octyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride.

[0016] As a further improvement of the present invention, the reaction time in step S4 is 20-24 hours, the mass ratio of the glycoside-modified silica to butanesulfone is 10:2.2-2.5, and the anionic surfactant is selected from at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium dodecyl sulfonate, sodium tetradecylbenzene sulfonate, sodium tetradecyl sulfate, sodium tetradecyl sulfonate, sodium hexadecylbenzene sulfonate, sodium hexadecyl sulfate, and sodium hexadecyl sulfonate.

[0017] As a further improvement of the present invention, the mass ratio of the modified silicon dioxide, the anionic surfactant, the aminosulfonic acid and the citric acid in step S5 is 3-4:1-2:5-7:3-5.

[0018] As a further improvement of the present invention, the present invention specifically comprises the following steps:

[0019] S1. Preparation of silane coupling agent modified silica: add 10-15 parts by weight of alkyl orthosilicate to 75-105 parts by weight of ethanol, dropwise add a mixture of 7-10 parts by weight of aqueous ammonia and 4-8 parts by weight of water, stir to react for 10-12 hours, filter, wash, add 10-12 parts by weight of solid to alcohol, add 2-3 parts by weight of silane coupling agent, heat to 45-55°C, stir to react for 1-3 hours, filter, wash, and dry to obtain silane coupling agent modified silica;

[0020] S2 reaction with epichlorohydrin: 10 parts by weight of silane coupling agent modified silica was added to dichloromethane, 3-4 parts by weight of epichlorohydrin was added, the reaction was stirred at room temperature for 3-5h, filtered, washed and dried to obtain chlorinated modified silica;

[0021] S3 reaction with an alkyl glycoside: 10 parts by weight of chlorinated modified silica and 7-9 parts by weight of an alkyl glycoside were mixed and added to water, and the reaction was stirred for 7-10h to obtain a glycoside-modified silica;

[0022] S4 reaction with butane sultone: 10 parts by weight of glycoside-modified silica and 2.2-2.5 parts by weight of butane sultone were mixed and added to acetone, and the reaction was stirred for 20-24h to obtain modified silica;

[0023] S5. Compounding: 3-4 parts by weight of modified silicon dioxide, 1-2 parts by weight of anionic surfactant, 5-7 parts by weight of aminosulfonic acid, and 3-5 parts by weight of citric acid are uniformly mixed to prepare a motor vehicle sewage pipe cleaning agent.

[0024] The present invention further protects a motor vehicle sewage pipe cleaning agent prepared by the above preparation method.

[0025] The present invention further protects a use of the above-mentioned motor vehicle sewage pipeline cleaning agent in pipeline cleaning.

[0026] The present invention has the following beneficial effects:

[0027] After preparing silicon dioxide through sol-gel reaction, the surface of the silicon dioxide is modified by a silane coupling agent with an amino group, and reacts with the epoxy group of epichlorohydrin, so that the silicon dioxide surface is connected with alkyl chloride, and can undergo a nucleophilic reaction with alkyl glycoside, so that the alkyl glycoside is connected to the silicon dioxide surface, has good surface activity, can produce fine foam, and has a broad-spectrum antibacterial property, can increase the permeability of the cell wall of pseudomonas, reduce its metabolic activity, is mild to the human body, and has the characteristics of low toxicity and low irritation. Then, after reacting with butane sultone, a quaternary ammonium salt structure is prepared, the antibacterial property and the surfactant are greatly improved, and the synergistic decontamination effect is achieved when compounded with anionic surfactants.

[0028] In addition, since the modified silica is also connected to the nano-silicon dioxide, the particle structure increases the friction force on the dirt in the sewage pipe, and can remove stubborn stains through multiple frictions, thereby greatly improving the decontamination efficiency.

[0029] The present invention also adds aminosulfonic acid and citric acid. The aminosulfonic acid has the characteristics of strong acidity, strong descaling ability, and low corrosion to metal and plastic materials. Citric acid is a strong organic acid with a large pH buffering effect and low corrosion to metals. It is compounded with aminosulfonic acid to remove calcium and magnesium scales, thereby greatly improving the descaling rate.

[0030] The motor vehicle sewage pipe cleaning agent prepared by the invention has the characteristics of being degradable, green, environmentally friendly, low-toxic and mild, having strong detergency, high descaling rate, synergistic decontamination effect between components, low corrosiveness and broad application prospects. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0032] This embodiment provides a method for preparing a motor vehicle sewage pipe cleaning agent, which specifically includes the following steps:

[0033] S1. Preparation of silane coupling agent modified silica: add 10g of methyl orthosilicate to 75g of ethanol, add a mixture of 7g of ammonia water and 4g of water dropwise, stir and react for 10h, filter, wash, add 10g of solid to 200mL of ethanol, add 2g of silane coupling agent KH550, heat to 45°C, stir and react for 1h, filter, wash, and dry to obtain silane coupling agent modified silica;

[0034] S2 reaction with epichlorohydrin: 10g of silane coupling agent modified silica was added to 500mL of dichloromethane, 3g of epichlorohydrin was added, the reaction was stirred at room temperature for 3h, filtered, washed and dried to obtain chlorinated modified silica;

[0035] S3 reaction with alkyl glycosides: 10g of chlorinated modified silica and 7g of butyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride were mixed and added to 500mL of water, the reaction was stirred for 7h, filtered, washed and dried to obtain glycoside-modified silica;

[0036] S4 reaction with butane sultone: 10g of glycoside-modified silica and 2.2g of butane sultone were mixed and added to 500mL of acetone, the reaction was stirred for 20h, filtered, washed, and dried to obtain modified silica;

[0037] S5. Compounding: 3 g of modified silica, 1 g of sodium dodecylbenzene sulfonate, 5 g of aminosulfonic acid, and 3 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent. Example 2

[0038] This embodiment provides a method for preparing a motor vehicle sewage pipe cleaning agent, which specifically includes the following steps:

[0039] S1. Preparation of silane coupling agent modified silica: 15g of tetraethyl orthosilicate was added to 105g of ethanol, a mixture of 10g of ammonia water and 8g of water was added dropwise, the mixture was stirred for 12h, filtered, washed, 12g of the solid was added to 200mL of ethanol, 3g of silane coupling agent KH792 was added, the mixture was heated to 55°C, stirred for 3h, filtered, washed, and dried to obtain silane coupling agent modified silica;

[0040] S2 reaction with epichlorohydrin: 10g of silane coupling agent modified silica was added to 500mL of dichloromethane, 4g of epichlorohydrin was added, the reaction was stirred at room temperature for 5h, filtered, washed and dried to obtain chlorinated modified silica;

[0041] S3 reaction with alkyl glycosides: 10g of chlorinated modified silica and 9g of butyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride were mixed and added to 500mL of water, the reaction was stirred for 10h, filtered, washed and dried to obtain glycoside-modified silica;

[0042] S4 reaction with butane sultone: 10g of glycoside-modified silica and 2.5g of butane sultone were mixed and added to 500mL of acetone, the reaction was stirred for 24h, filtered, washed, and dried to obtain modified silica;

[0043] S5. Compounding: 4 g of modified silica, 2 g of sodium hexadecylbenzenesulfonate, 7 g of aminosulfonic acid, and 5 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent. Example 3

[0044] This embodiment provides a method for preparing a motor vehicle sewage pipe cleaning agent, which specifically includes the following steps:

[0045] S1. Preparation of silane coupling agent modified silica: 12g of tetraethyl orthosilicate was added to 90g of ethanol, a mixture of 8.5g of ammonia water and 6g of water was added dropwise, the mixture was stirred for 11h, filtered, washed, 11g of the solid was added to 200mL of ethanol, 2.5g of silane coupling agent KH602 was added, the mixture was heated to 50°C, stirred for 2h, filtered, washed, and dried to obtain silane coupling agent modified silica;

[0046] S2 reaction with epichlorohydrin: 10g of silane coupling agent modified silica was added to 500mL of dichloromethane, 3.5g of epichlorohydrin was added, the reaction was stirred at room temperature for 4h, filtered, washed and dried to obtain chlorinated modified silica;

[0047] S3 reaction with alkyl glycosides: 10g of chlorinated modified silica and 8g of octyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride were mixed and added to 500mL of water, stirred for 8h, filtered, washed and dried to obtain glycoside-modified silica;

[0048] S4 reaction with butane sultone: 10g of glycoside-modified silica and 2.35g of butane sultone were mixed and added to 500mL of acetone, the reaction was stirred for 22h, filtered, washed, and dried to obtain modified silica;

[0049] S5. Compounding: 3.5 g of modified silica, 1.5 g of sodium hexadecyl sulfonate, 6 g of aminosulfonic acid, and 4 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent.

[0050] Comparative Example 1

[0051] Compared with Example 3, the difference is that step S3 is not performed.

[0052] The details are as follows:

[0053] S1. Preparation of silane coupling agent modified silica: 12g of tetraethyl orthosilicate was added to 90g of ethanol, a mixture of 8.5g of ammonia water and 6g of water was added dropwise, the mixture was stirred for 11h, filtered, washed, 11g of the solid was added to 200mL of ethanol, 2.5g of silane coupling agent KH602 was added, the mixture was heated to 50°C, stirred for 2h, filtered, washed, and dried to obtain silane coupling agent modified silica;

[0054] S2 reaction with epichlorohydrin: 10g of silane coupling agent modified silica was added to 500mL of dichloromethane, 3.5g of epichlorohydrin was added, the reaction was stirred at room temperature for 4h, filtered, washed and dried to obtain chlorinated modified silica;

[0055] S3 reaction with butane sultone: 10g of chlorinated modified silica and 2.35g of butane sultone were mixed and added to 500mL of acetone, the reaction was stirred for 22h, filtered, washed, and dried to obtain modified silica;

[0056] S4. Compounding: 3.5 g of modified silica, 1.5 g of sodium hexadecyl sulfonate, 6 g of aminosulfonic acid, and 4 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent.

[0057] Comparative Example 2

[0058] Compared with Example 3, the difference is that step S4 is not performed.

[0059] The details are as follows:

[0060] S1. Preparation of silane coupling agent modified silica: 12g of tetraethyl orthosilicate was added to 90g of ethanol, a mixture of 8.5g of ammonia water and 6g of water was added dropwise, the mixture was stirred for 11h, filtered, washed, 11g of the solid was added to 200mL of ethanol, 2.5g of silane coupling agent KH602 was added, the mixture was heated to 50°C, stirred for 2h, filtered, washed, and dried to obtain silane coupling agent modified silica;

[0061] S2 reaction with epichlorohydrin: 10g of silane coupling agent modified silica was added to 500mL of dichloromethane, 3.5g of epichlorohydrin was added, the reaction was stirred at room temperature for 4h, filtered, washed and dried to obtain chlorinated modified silica;

[0062] S3 reaction with alkyl glycosides: 10g of chlorinated modified silica and 8g of octyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride were mixed and added to 500mL of water, stirred for 8h, filtered, washed and dried to obtain glycoside-modified silica;

[0063] S4. Compounding: 3.5 g of glycoside-modified silica, 1.5 g of sodium hexadecyl sulfonate, 6 g of aminosulfonic acid, and 4 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent.

[0064] Comparative Example 3

[0065] The details are as follows:

[0066] S1. Preparation of silane coupling agent modified silica: 12g of tetraethyl orthosilicate was added to 90g of ethanol, a mixture of 8.5g of ammonia water and 6g of water was added dropwise, the mixture was stirred for 11h, filtered, washed, 11g of the solid was added to 200mL of ethanol, 2.5g of silane coupling agent KH602 was added, the mixture was heated to 50°C, stirred for 2h, filtered, washed, and dried to obtain silane coupling agent modified silica;

[0067] S2. Compounding: 3.5 g of a mixture (silane coupling agent modified silica, octyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride in a ratio of 10:8), 1.5 g of sodium hexadecyl sulfonate, 6 g of aminosulfonic acid, and 4 g of citric acid were stirred and mixed for 30 minutes to prepare a motor vehicle sewage pipe cleaning agent.

[0068] Test Example 1

[0069] Take 10mL of 1wt% aqueous solution of the motor vehicle sewage pipe cleaning agent prepared in Example 1-3 or Comparative Example 1-3 and similar products on the market and add them to a test tube of the same size. The same mass of simulated sewage pipe inner wall scale (0.5g red iron oxide + 0.2g aluminum hydroxide + 1g calcium carbonate) is added to the test tube. The actual cleaning effect of the cleaning force is judged by the time it takes for the scale to float up.

[0070] The results are shown in Table 1.

[0071] Table 1

[0072] Group Floating time (min) Example 1 30 Example 2 29 Example 3 27 Comparative Example 1 83 Comparative Example 2 75 Comparative Example 3 190 Commercially available 110

[0073] It can be seen from the above table that the motor vehicle sewage pipe cleaning agent prepared in Examples 1-3 of the present invention has a good cleaning effect on scale.

[0074] Test Example 2

[0075] The motor vehicle sewage pipe cleaning agents prepared in Examples 1-3 and Comparative Examples 1-3 and similar products on the market were prepared into 1 wt % aqueous solutions for performance testing.

[0076] The cleaning power (%) of the sample by swing washing was tested according to the method of GB / T 35759-2017 "Metal Cleaners".

[0077] Foaming test: The Roche foam meter was set to 25°C, the sample solution of the present invention was placed at the bottom of the foam meter, the scale was aligned to 50 mL, and the test solution was then absorbed using a 200 mL quantitative funnel, the center of the funnel was fixed, the test solution was placed, and the foam height (mm) was recorded, retaining the integer.

[0078] Stable foam test: Set the Roche foam meter to 25°C, place the sample solution in the bottom of the foam meter, align the scale to 50mL, then use a 200mL quantitative funnel to absorb the test solution, fix the center position of the funnel, put down the test solution, and record the foam height (mm) after 30 minutes, retaining the integer.

[0079] The results are shown in Table 2.

[0080] Table 2

[0081] Group Cleaning power (%) Foam height (mm) Foam height after 30 minutes (mm) Example 1 92 211 204 Example 2 90 214 207 Example 3 95 217 211 Comparative Example 1 70 147 67 Comparative Example 2 77 169 82 Comparative Example 3 82 185 135 Commercially available 55 152 60

[0082] It can be seen from the above table that the motor vehicle sewage pipe cleaning agent prepared in Examples 1-3 has good detergency, foaming property and foam stability.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a motor vehicle sewage pipe cleaning agent, characterized in that: The following steps are involved: S1. Preparation of silane coupling agent modified silica: adding alkyl orthosilicate to ethanol, adding a mixture of ammonia water and water dropwise, stirring to react, filtering, washing, adding solid to ethanol, adding silane coupling agent, heating and stirring to react, filtering, washing, and drying to obtain silane coupling agent modified silica; the alkyl orthosilicate is methyl orthosilicate or ethyl orthosilicate, the mass ratio of the alkyl orthosilicate, ethanol, ammonia water and water is 10-15:75-105:7-10:4-8, the stirring reaction time is 10-12h, the mass ratio of the solid to the silane coupling agent is 10-12:2-3, the silane coupling agent is selected from at least one of KH550, KH602, and KH792, the heating and stirring reaction temperature is 45-55°C, and the time is 1-3h; S2. Reaction with epichlorohydrin: adding the silane coupling agent modified silica to dichloromethane, adding epichlorohydrin, stirring the reaction at room temperature, filtering, washing, and drying to obtain chlorinated modified silica; the mass ratio of the silane coupling agent modified silica to epichlorohydrin is 10:3-4, and the reaction time is 3-5h after stirring at room temperature; S3 reaction with an alkyl glycoside: the chlorinated modified silica and an alkyl glycoside are reacted to obtain a glycoside-modified silica; the mass ratio of the chlorinated modified silica and the alkyl glycoside is 10:7-9, the reaction time is 7-10h, the alkyl glycoside is butyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride or octyl glucoside hydroxypropyl dimethyl hexadecyl ammonium hydrochloride; S4 reaction with butane sultone: the glycoside-modified silica and butane sultone reaction to obtain modified silica; the reaction time is 20-24h, the mass ratio of the glycoside-modified silica and butane sultone is 10: 2.2-2.5; S5. Compounding: Evenly mix modified silica, anionic surfactant, aminosulfonic acid and citric acid to prepare a motor vehicle sewage pipe cleaning agent; the mass ratio of the modified silica, anionic surfactant, aminosulfonic acid and citric acid is 3-4:1-2:5-7:3-5, and the anionic surfactant is selected from at least one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, sodium dodecyl sulfonate, sodium tetradecylbenzene sulfonate, sodium tetradecyl sulfate, sodium tetradecyl sulfonate, sodium hexadecylbenzene sulfonate, sodium hexadecyl sulfate and sodium hexadecyl sulfonate.

2. A motor vehicle sewage pipe cleaning agent prepared by the preparation method as claimed in claim 1.

3. Use of the motor vehicle sewage pipe cleaning agent as claimed in claim 2 in pipe cleaning.