Environment-friendly neutral iron powder remover and preparation method thereof

Abstract

The invention discloses an environment-friendly neutral iron powder remover and a preparation method thereof. The environment-friendly neutral iron powder remover comprises the following components: water, sodium thioacetate, cetyltrimethylamine bromide, a defoaming agent, disodium ethylene diamine tetraacetate and a surfactant. And the pH value of the environment-friendly neutral iron powder remover is 6.5-7.5. According to the environment-friendly neutral iron powder remover, the formula is optimized, the sodium thioacetate serves as a main active component and is matched with the cetyltrimethylamine bromide, the disodium ethylene diamine tetraacetate and the surfactant, meanwhile, the pH of the remover is adjusted to be 6.5-7.5 (neutral), the cleaning effect on iron powder can be guaranteed, and the environment-friendly neutral iron powder remover is environmentally friendly and free of pollution. And moreover, the pollution discharge requirement in a city can be met, the pollution to the environment is avoided, the damage to the paint surface and auxiliary ornaments on the vehicle surface caused by an acidic (alkaline) cleaning agent is effectively avoided, and the application prospect is good.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents, in particular to an environmentally friendly neutral iron powder remover and a preparation method thereof, and in particular to an environmentally friendly neutral iron powder remover that can be used for automobile beauty cleaning and a preparation method thereof. Background Art

[0002] Car washing refers to the cleaning of the exterior of a car, which is a problem that every car owner or driver often faces. Car washing generally involves using a cleaning agent to loosen the dirt before rinsing the vehicle. During the use of the car, a large amount of iron powder will be generated by the brake pads and brake discs when the vehicle brakes. The iron powder is easy to adhere to the wheel hub and body of the vehicle. Compared with conventional stains, iron powder has stronger adhesion, and it is difficult to effectively clean it with general cleaning agents. Generally, iron powder cleaners are used to clean it. Traditional types of iron powder cleaners are mostly acidic and highly polluting. At present, with increasingly stringent pollution control, they can no longer meet environmental emission standards. In addition, acidic iron powder cleaners may also damage the paint surface and the attached decorations on the surface of the car. The physical cleaning method of polishing to remove iron powder from the surface of the car will reduce the limited thickness of the car's paint and destroy the integrity of the paint. At the same time, its construction time is long, requiring the owner to wait for a long time and the merchant's labor cost to increase.

[0003] Therefore, it is of great practical significance to develop an iron powder remover with good cleaning effect, low pollution and low cost. Summary of the invention

[0004] Due to the above-mentioned defects in the prior art, the present invention provides an iron powder remover with good cleaning effect, low pollution and low cost, specifically an environmentally friendly neutral iron powder remover that can be used for car beauty cleaning, which overcomes the defects of existing acidic (alkaline) iron powder removers that do not comply with regulations on sewage discharge, may cause damage to the paint surface and auxiliary decorations on the surface of the car, and physically polish the paint to remove iron powder, resulting in thinning of the paint.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An environmentally friendly neutral iron powder remover comprises the following components: water, sodium thioacetate, hexadecyltrimethylammonium bromide, a defoamer, disodium ethylenediaminetetraacetate and a surfactant;

[0007] The pH value of the environmentally friendly neutral iron powder remover is 6.5 to 7.5.

[0008] The sodium thioacetate in the formula is a metal inhibitor that has special reaction characteristics to metallic iron; cetyltrimethylammonium bromide has the functions of sterilization, decontamination, biodegradation and environmental protection; disodium ethylenediaminetetraacetic acid is a chelating agent used to improve the stability of metals in the remover and facilitate subsequent sewage treatment.

[0009] The environmentally friendly neutral iron powder remover of the present invention optimizes the formula, uses sodium thioacetate as the main active component, and is combined with cetyltrimethylammonium bromide, disodium ethylenediaminetetraacetate and a surfactant. The pH of the remover is adjusted so that the pH is 6.5-7.5 (neutral), which can not only ensure the cleaning effect of the iron powder, but also meet the sewage discharge requirements in the city, will not pollute the environment, and effectively avoid the damage to the paint surface and the auxiliary decorations on the surface of the vehicle caused by acidic (alkaline) detergents; the chemical cleaning method is adopted, and compared with the physical cleaning method, it has the advantages of fast cleaning speed, saving labor costs, avoiding the reduction of paint surface thickness due to grinding, etc., and has good application prospects.

[0010] As the preferred technical solution:

[0011] The environmentally friendly neutral iron powder remover as described above also includes sodium citrate, which is a pH regulator. Sodium citrate is made from grain raw materials, is absolutely safe, reliable and non-toxic, and has stable pH regulation performance. The commonly used pH regulator, NaHCO 3 , because it is stable at room temperature, but easily decomposed at high temperature.

[0012] The environmentally friendly neutral iron powder remover as described above also includes fragrance.

[0013] As described above, the mass fractions of the water, sodium thioacetate, cetyltrimethylammonium bromide, defoaming agent, disodium ethylenediaminetetraacetate, surfactant, sodium citrate and flavor in the raw materials are 40% to 90%, 1% to 50%, 0.001% to 5%, 0.001% to 0.5%, 0.1% to 30%, 0.001% to 5%, 0.1% to 40% and 0.001% to 5%, respectively.

[0014] In the environmentally friendly neutral iron powder remover as described above, the mass fractions of water, sodium thioacetate, cetyltrimethylammonium bromide, defoaming agent, disodium ethylenediaminetetraacetate, surfactant, sodium citrate and flavor in the raw materials are 79.6368%, 11.5473%, 0.9556%, 0.016%, 3.1854%, 0.1195%, 4.38% and 0.1593%, respectively.

[0015] In the environmentally friendly neutral iron powder remover as described above, the surfactant is sodium polyacrylate.

[0016] In the environmentally friendly neutral iron powder remover as described above, the defoaming agent is NZX.

[0017] In addition, the present invention also provides a method for preparing the above-mentioned environmentally friendly neutral iron powder remover, comprising the following steps:

[0018] (1) sodium thioacetate and cetyltrimethylammonium bromide are sequentially added to water under stirring until the sodium thioacetate is completely dissolved, during which a defoaming agent (to eliminate a large number of bubbles generated during the stirring process) is added and the solution is allowed to stand to obtain a solution T1;

[0019] (2) Disodium ethylenediaminetetraacetate and a surfactant are added to solution T1, and the mixture is stirred until homogeneous, while the pH value of the solution is controlled within a range of 6.5 to 7.5, thereby obtaining an environmentally friendly neutral iron powder remover.

[0020] The configuration containers and tools selected in the above method should avoid using metal containers that are prone to rust. The above preparation method has simple process, simple operation, mild reaction conditions and good application prospects.

[0021] As the preferred technical solution:

[0022] In the method described above, controlling the pH value of the solution is accomplished by adding sodium citrate thereto (e.g., if the pH value of the solution is greater than 7.5, sodium citrate is added to adjust the pH value until it meets the pH range of 6.5-7.5);

[0023] After the homogenization in step (2) is completed, flavor is added to the solution to dissolve the flavor.

[0024] In the method as described above, in step (1), the stirring speed is 500 to 1000 rpm, and the standing time is not less than 2 hours;

[0025] In step (2), the stirring speed is 500-1000 rpm, the dissolution is completed by stirring acceleration and the stirring time is not less than 1 min.

[0026] The above technical solution is only a feasible technical solution of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0027] The above invention has the following advantages or beneficial effects:

[0028] (1) The environmentally friendly neutral iron powder remover of the present invention has an optimized formula, with sodium thioacetate as the main active ingredient, combined with cetyltrimethylammonium bromide, disodium ethylenediaminetetraacetate and a surfactant, and the pH of the remover is adjusted to a pH of 6.5-7.5 (neutral). It can not only ensure the cleaning effect of iron powder, but also have an excellent overall cleaning effect, can effectively remove iron powder, and can meet the sewage discharge requirements in the city, will not pollute the environment, is non-corrosive, and has no irritating odor, and effectively avoids damage to the paint surface and the attached decorations on the surface of the vehicle caused by acidic (alkaline) detergents;

[0029] (2) The preparation method of the environmentally friendly neutral iron powder remover of the present invention has simple process, easy operation, mild reaction conditions, relatively low cost and good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0031] Figure 1 The present invention is a flow chart of the preparation method of the environmentally friendly neutral iron powder remover. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0033] The sources of raw materials involved in the following examples and comparative examples are as follows: sodium thioacetate was purchased from Changsha Changtang Import and Export Co., Ltd., cetyltrimethylammonium bromide was purchased from Shanghai Ethyl Chemical Co., Ltd., defoamer NXZ was purchased from Foshan Nanhai Datian Chemical Co., Ltd., disodium ethylenediaminetetraacetic acid was purchased from Suzhou Wanying Chemical Co., Ltd., sodium polyacrylate was purchased from Xinzhongtuan official flagship store, sodium citrate was purchased from Qinuo Henan Zhuosheng official store, and flavor (water-soluble lemon flavor) was purchased from Guangzhou Polly Spice Co., Ltd.

[0034] Example 1

[0035] A method for preparing an environmentally friendly neutral iron powder remover comprises the following steps (such as Figure 1 shown):

[0036] (1) 10 g of sodium thioacetate and 0.01 g of cetyltrimethylammonium bromide were sequentially added to 80 g of deionized water under stirring at 500 to 1000 rpm until the sodium thioacetate was completely dissolved, during which 0.001 g of defoamer NXZ was added and the mixture was allowed to stand for 2 h to obtain solution T1;

[0037] (2) Add 3 g of disodium ethylenediaminetetraacetate and 0.01 g of sodium polyacrylate to solution T1, stir at 500-1000 rpm until homogeneous, add 6.978 g of sodium citrate to control the pH value of the solution within 6.5-7.5, add 0.001 g of water-soluble lemon essence and dissolve the water-soluble lemon essence (stir at a stirring speed of 500-1000 rpm for 1 min), and an environmentally friendly neutral iron powder remover is obtained. The environmentally friendly neutral iron powder remover can be filled and packaged for sale.

[0038] Embodiments 2 to 5

[0039] A method for preparing an environmentally friendly neutral iron powder remover is basically the same as Example 1, except that the amount of each component added (in g) is as shown in the following table, where A, B, C, D, E, F, G and H correspond to water, sodium thioacetate, hexadecyltrimethylammonium bromide, defoamer NXZ, disodium ethylenediaminetetraacetate, sodium polyacrylate, sodium citrate and water-soluble lemon essence, respectively.

[0040] A B C D E F G H Example 2 500g 7 g 6 g 0.1 g 20g 0.7 g 27g 0.8 g Example 3 500g 80g 6 g 0.1 g 21 g 0.8 g 28g 0.8 g Example 4 500g 70g 6 g 0.1 g 22 g 0.6 g 28g 0.9 g Example 5 500g 75g 6 g 0.1 g 18 g 0.75 g 27g 1.1 g

[0041] Comparative Example 1

[0042] A method for preparing a remover is basically the same as Example 1, except that sodium thioacetate is replaced with 10g sodium thiosulfide.

[0043] The iron powder removal effect of the products prepared in Examples 1 to 5 and Comparative Example 1 was tested. The experimental test was carried out in accordance with the provisions of QB / T2117-1995. The actual application test operation was as follows: the car paint surface and car wheel hub to be cleaned (a certain amount of iron powder was sprayed on the paint surface and the wheel hub surface before cleaning and left to stand for a certain period of time) were cleaned, and the above product was evenly sprayed on the cleaning part. At this time, the iron powder reacted with the remover, and the iron was oxidized to Fe 3+ The remover is purple in color. The stronger the purple color, the more iron powder is removed. Let it stand for 1 to 3 minutes, wipe it with a sponge and towel, and then rinse it with clean water.

[0044] The test results are as follows: the iron powder removal rates of the products of Examples 1 to 5 are 99.1%, 99.2%, 99.5%, 99.1% and 99.3% respectively, and the iron powder removal rate of Comparative Example 1 is 80.2%. Analysis of the above test results shows that the present invention achieves an excellent iron powder cleaning effect by combining sodium thioacetate with hexadecyltrimethylammonium bromide, disodium ethylenediaminetetraacetate and a surfactant.

[0045] It has been verified that the environmentally friendly neutral iron powder remover of the present invention optimizes the formula, uses sodium thioacetate as the main active component, and is combined with cetyltrimethylammonium bromide, disodium ethylenediaminetetraacetate and a surfactant. At the same time, the pH of the remover is adjusted so that it is at a pH of 6.5-7.5 (neutral). It can not only ensure the cleaning effect on iron powder, but also have an excellent overall cleaning effect and can effectively remove iron powder. It can also meet the sewage discharge requirements in the city, will not pollute the environment, has no corrosion and no irritating odor, and effectively avoids damage to the paint surface and the auxiliary decorations on the surface of the car caused by acidic (alkaline) detergents. The preparation method has the advantages of simple process, simple operation, mild reaction conditions, relatively low cost, and good application prospects.

[0046] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0047] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. An environmentally friendly neutral iron powder remover, Features: The invention comprises the following components: water, sodium thioacetate, cetyltrimethylammonium bromide, defoaming agent, disodium ethylenediaminetetraacetate and surfactant; The pH value of the environmentally friendly neutral iron powder remover is 6.5 to 7.

5.

2. An environmentally friendly neutral iron powder remover according to claim 1, It is characterized in that Also includes sodium citrate.

3. An environmentally friendly neutral iron powder remover according to claim 2, It is characterized in that Also includes fragrance.

4. An environmentally friendly neutral iron powder remover according to claim 3, It is characterized in that The mass fractions of the water, sodium thioacetate, cetyltrimethylammonium bromide, defoamer, disodium ethylenediaminetetraacetate, surfactant, sodium citrate and flavor in the raw materials are 40%-90%, 1%-50%, 0.001%-5%, 0.001%-0.5%, 0.1%-30%, 0.001%-5%, 0.1%-40% and 0.001%-5%, respectively.

5. An environmentally friendly neutral iron powder remover according to claim 4, It is characterized in that The mass fractions of water, sodium thioacetate, cetyltrimethylammonium bromide, defoamer, disodium ethylenediaminetetraacetate, surfactant, sodium citrate and flavor in the raw materials are 79.6368%, 11.5473%, 0.9556%, 0.016%, 3.1854%, 0.1195%, 4.38% and 0.1593%, respectively.

6. An environmentally friendly neutral iron powder remover according to claim 1, It is characterized in that The surfactant is sodium polyacrylate.

7. An environmentally friendly neutral iron powder remover according to claim 1, It is characterized in that The defoamer is NXZ.

8. A method for preparing an environmentally friendly neutral iron powder remover as claimed in any one of claims 1 to 7, It is characterized in that The following steps are involved: (1) sodium thioacetate and cetyltrimethylammonium bromide are sequentially added to water under stirring until the sodium thioacetate is completely dissolved, during which a defoaming agent is added and the solution is allowed to stand to obtain a solution T1; (2) Disodium ethylenediaminetetraacetate and a surfactant are added to solution T1, and the mixture is stirred until homogeneous, while the pH value of the solution is controlled within a range of 6.5 to 7.5, thereby obtaining an environmentally friendly neutral iron powder remover.

9. The method according to claim 8, It is characterized in that Controlling the pH of the solution is done by adding sodium citrate to it; After the homogenization in step (2) is completed, flavor is added to the solution to dissolve the flavor.

10. The method according to claim 9, It is characterized in that In step (1), the stirring speed is 500-1000 rpm, and the standing time is not less than 2 h; In step (2), the stirring speed is 500-1000 rpm, the dissolution is completed by stirring acceleration and the stirring time is not less than 1 min.

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