Solid windshield washer fluid and preparation method thereof

Abstract

The invention discloses a solid windshield washer fluid and a preparation method thereof, the solid windshield washer fluid comprises the following raw materials by weight: 45-55 parts of an acid source, 25-40 parts of sodium carbonate, 9-10 parts of a surfactant, 2.5-3.5 parts of a corrosion inhibitor, 1.5-2.5 parts of an antifoaming agent, and 3.5-4 parts of a builder; the washing assistant comprises sodium pyrophosphate, and the washing assistant further comprises one or more of hydroxypropyl methylcellulose and sodium stearyl fumarate. The preparation method of the solid windshield washer fluid comprises three steps of mixing, tabletting and slicing. The solid windshield washer fluid provided by the invention can achieve the effects of being good in cleaning effect, excellent in spreading performance and capable of protecting a windscreen wiper.

Description

Technical Field

[0001] The invention relates to daily chemical products, in particular to solid glass water and a preparation method thereof. Background Art

[0002] As people's living standards continue to improve, cars have become their primary means of transportation, and the number of consumables required for cars has increased year by year. Among them, windshield washer fluid, or windshield cleaning fluid, is undoubtedly a popular consumer product. In dusty environments, windshield washer fluid depletes very quickly.

[0003] Windshield washer fluid can be categorized by properties as either solid or liquid. Liquid windshield washer fluid is convenient to use, but bulky and difficult to carry. Failure to refill liquid windshield washer fluid promptly during long journeys can be inconvenient and even endanger driving safety. Solid windshield washer fluid is compact and portable, but existing solid windshield washer fluids often lack a tight flow and are easily blown away by the wind. Furthermore, the inability to form a lubricating film on the glass surface can cause wear on wipers. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a solid glass water with good cleaning effect, excellent spreading performance and protection of wipers.

[0005] Another object of the present invention is to provide a method for preparing solid glass water that is simple and easy to operate.

[0006] Technical solution: The solid glass water of the present invention comprises the following raw materials in parts by weight: 45-55 parts of an acid source, 25-40 parts of sodium carbonate, 9-10 parts of a surfactant, 2.5-3.5 parts of a corrosion inhibitor, 1.5-2.5 parts of a defoaming agent, and 3.5-4 parts of a builder; the builder comprises sodium pyrophosphate, and the builder further comprises one or more of hydroxypropyl methylcellulose and sodium stearyl fumarate.

[0007] Preferably, the detergent builder is sodium pyrophosphate, hypromellose and sodium stearyl fumarate, which can significantly improve the cleaning effect of glass water.

[0008] Preferably, the weight proportion of the hypromellose is 1-4 parts.

[0009] Preferably, the weight portion of the sodium pyrophosphate does not exceed 0.6 parts. Since phosphorus can cause secondary pollution to the environment and a small amount of addition can achieve a good detergent effect, the weight portion of the sodium pyrophosphate does not exceed 0.5 parts.

[0010] Preferably, the acid source is one or more of citric acid, salicylic acid, tartaric acid, malic acid, and adipic acid; more preferably, citric acid.

[0011] Preferably, the surfactant is one or more of sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, sodium secondary alkyl sulfonate, and sodium sulfate of fatty acid polyoxyethylene ether mineral; different types of surfactants have a slight effect on the cleaning performance of glass water, and a mixture of sodium dodecyl sulfate and sodium dodecylbenzenesulfonate is further preferred.

[0012] Preferably, the corrosion inhibitor is one or more of sodium silicate, sodium metasilicate, and benzotriazole.

[0013] Preferably, the defoaming agent is polyether-modified silicone oil.

[0014] The method for preparing solid glass water of the present invention comprises the following steps:

[0015] (1) Mixing: Add the raw materials weighed in proportion to the mixer and mix them evenly to obtain a mixture;

[0016] (2) Tableting: The mixture is fed into a tablet press and tableted to obtain large pieces of solid glass water;

[0017] (3) Slicing: Slice a large piece of solid glass water to obtain solid glass water.

[0018] Preferably, the tablet press speed in step (2) is 28-32 r / min and the pressure is 70-80 MPa; and the mass of the solid glass water in step (3) is 2.7-2.8 g / tablet.

[0019] Principle of the invention: Hydroxypropyl methylcellulose is soluble in water and some solvents, and swells in cold water to form a clear or slightly turbid colloidal solution. Its aqueous solution has surface activity, high transparency and stable performance. This method adds a small amount of hydropropyl methylcellulose and sodium stearyl fumarate to solid glass water, making full use of its thickening properties, which can increase the formability of tablets during the tableting process; at the same time, due to its thickening effect, adding it to solid glass water can make the sprayed liquid form a tighter water flow, which is not easily blown away from the glass by the wind, allowing more liquid to remain within the movement range of the wiper, reducing wind resistance loss and improving the cleaning effect. Sodium stearyl fumarate and hydropropyl methylcellulose can form a protective film in the effervescent tablet, improve the disintegration effect, increase the formability of the tablets in the solid glass water during the tableting process, and reduce the risks of cracking, sticking, etc. Polyether-modified silicone oil, as a leveling agent and defoamer, not only significantly accelerates the foam breakdown rate during tablet effervescence, promoting tablet disintegration, reducing foam accumulation, and rapidly producing a uniform and stable windshield washer fluid, but also forms a lubricating film on the glass surface, reducing wiper wear during wiping and extending wiper service life. Furthermore, hydropropyl methylcellulose, sodium stearyl fumarate, and polyether-modified silicone oil all possess lubricating properties. Adding these to solid windshield washer fluid can further reduce friction and wear on wipers during wiping.

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) Excellent spreading performance: This method adds a small amount of hydroxypropyl methylcellulose and sodium stearyl fumarate to solid glass water, which can make the sprayed liquid form a tighter water flow, so that it is not easily blown away from the glass by the wind, so that more liquid stays within the movement range of the wiper, reducing wind resistance loss and improving the cleaning effect; (2) This method adds hydroxypropyl methylcellulose, sodium stearyl fumarate and polyether modified silicone oil to form a lubricating film on the glass surface, reducing the friction and wear of the wiper during the wiping process, and extending the service life of the wiper; (3) This method adds a small amount of hydroxypropyl methylcellulose and sodium stearyl fumarate to solid glass water, which can form a lubricating film on the glass surface, reducing the friction and wear of the wiper during the wiping process, and extending the service life of the wiper; (4) Adding polyether modified silicone oil as a defoaming agent can effectively reduce the dissolution time of solid glass water in water by half; (4) The method adds sodium silicate to the solid glass water, and sodium silicate acts as a water softener, a precipitation aid and a metal corrosion inhibitor, effectively improving the cleaning effect to more than 99.9%; (5) It is environmentally friendly and pollution-free. The surfactant in the solid glass water can be completely degraded within 5-7 days in the natural environment, and is environmentally friendly; (6) The preparation process disclosed in the method is simple, the raw materials are easy to obtain, the reaction conditions are simple, and it can be prepared at room temperature; (7) The solid glass water prepared by the method has a mass of 2.7g / piece, a small volume, and is easy to carry. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be further described below in conjunction with embodiments.

[0022] Example 1

[0023] The solid glass water of the present invention comprises, by weight, 2 parts of sodium lauryl sulfate, 7.2 parts of sodium dodecylbenzene sulfonate, 55 parts of citric acid, 27 parts of sodium carbonate, 3 parts of sodium silicate, 0.3 parts of sodium pyrophosphate, 0.5 parts of sodium stearyl fumarate, 3 parts of hydroxypropyl methylcellulose, and 2 parts of polyether-modified silicone oil.

[0024] The preparation method of the solid glass water described in the present embodiment comprises the following steps:

[0025] (1) Add the raw materials weighed in proportion to the mixer, control the speed to 20r / min, and mix for 30 minutes to make the raw materials uniformly mixed to obtain a mixture.

[0026] (2) The mixture was fed into a tablet press, and the speed of the tablet press was adjusted to 30 r / min and the pressure to 80 MPa, so that the tablet hardness reached 95 N, and large pieces of solid glass water were obtained.

[0027] (3) Slicing: Slice the large piece of solid glass water so that the mass of each piece of solid glass water is 2.7 g.

[0028] A piece of solid glass water was dissolved in 1 L of tap water. The performance of the prepared solid glass water was tested according to GB / T 23436-2009. The test indicators included appearance, pH value, freezing point, dissolution time, tablet appearance, cleanliness, metal corrosion test, effect on rubber test, and effect on automotive organic coating test. The test results are shown in Table 1.

[0029] Example 2

[0030] The same points as in Example 1 are not described in detail here. The difference lies in the different amounts of raw materials added.

[0031] 2.5 parts of hypromellose.

[0032] Example 3

[0033] The same points as in Example 1 are not described in detail here. The difference lies in the different amounts of raw materials added.

[0034] 45 parts of citric acid, 37 parts of sodium carbonate, 0.3 part of sodium stearyl fumarate.

[0035] Comparative Example 1

[0036] The same points as Example 1 in this comparative example are not repeated here, except that the amount of raw materials added is different:

[0037] 0 parts of polyether modified silicone oil.

[0038] Comparative Example 2

[0039] The same points as Example 1 in this comparative example are not repeated here, except that the amount of raw materials added is different:

[0040] 56 parts of citric acid, 0 part of sodium stearyl fumarate.

[0041] Comparative Example 3

[0042] The same points as Example 1 in this comparative example are not repeated here, except that the amount of raw materials added is different:

[0043] 56 parts of citric acid, 28.5 parts of sodium carbonate, 0 part of hypromellose.

[0044] Comparative Example 4

[0045] The same points as Example 1 in this comparative example are not repeated here, except that the amount of raw materials added is different:

[0046] 56.5 parts of citric acid, 28.5 parts of sodium carbonate, 0 part of sodium silicate.

[0047] Table 1 Performance characterization results of Examples 1-3 and Comparative Examples 1-4

[0048]

[0049] The results of Example 1, Example 3, and Comparative Example 2 in Table 1 show that the addition of sodium stearyl fumarate can prevent sticking. Furthermore, the amount of sodium stearyl fumarate added directly affects the cleaning effect of solid glass water. Reducing the amount of sodium stearyl fumarate added reduces the cleaning effect. Without sodium stearyl fumarate, the cleaning effect of solid glass water is very poor, only 92.54%, 7.4% lower than the better cleaning effect of Example 1. The results of Example 1 and Comparative Example 3 show that the addition of hypromellose can prevent the occurrence of flaking, leaving the surface of solid glass water intact and bright. The results of Example 1, Example 2, and Comparative Example 3 show that the amount of hypromellose added affects the cleaning effect. Reducing the amount of hypromellose added reduces the cleaning effect, and without adding hypromellose, the cleaning effect decreases by 1.9%. Comparing the results of Example 1 and Comparative Example 4 shows that the addition of sodium silicate enhances metal corrosion inhibition and improves the cleaning effect accordingly. According to the results of Example 1 and Comparative Example 1, the use of polyether-modified silicone oil as a defoaming agent is beneficial for shortening the dissolution time of solid glass water, which can be shortened by half.

Claims

1. A solid glass water, characterized in that: The solid glass water comprises the following raw materials in parts by weight: 45-55 parts of an acid source, 25-40 parts of sodium carbonate, 9-10 parts of a surfactant, 2.5-3.5 parts of a corrosion inhibitor, 1.5-2.5 parts of a defoaming agent, and 3.5-4 parts of a builder; the builder comprises sodium pyrophosphate, and the builder further comprises one or more of hydroxypropyl methylcellulose and sodium stearyl fumarate.

2. The solid glass water according to claim 1, characterized in that: The weight proportion of the hypromellose is 1-4 parts.

3. The solid glass water according to claim 1, characterized in that The weight proportion of the hypromellose is no more than 3 parts.

4. The solid glass water according to claim 1, characterized in that The weight portion of the sodium pyrophosphate does not exceed 0.5 parts.

5. The solid glass water according to claim 1, characterized in that: The acid source is one or more of citric acid, salicylic acid, tartaric acid, malic acid and adipic acid.

6. The solid glass water according to claim 1, characterized in that: The surfactant is one or more of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, sodium secondary alkyl sulfonate, and sodium sulfate of fatty acid polyoxyethylene ether mineral.

7. The solid glass water according to claim 1, characterized in that: The corrosion inhibitor is one or more of sodium silicate, sodium metasilicate and benzotriazole.

8. The solid glass water according to claim 1, characterized in that: The defoaming agent is polyether modified silicone oil.

9. The method for preparing solid glass water according to claim 1, wherein: The following steps are involved: (1) Mixing: Add the raw materials weighed in proportion to the mixer and mix them evenly to obtain a mixture; (2) Tableting: The mixture is fed into a tablet press and tableted to obtain large pieces of solid glass water; (3) Slicing: Slice a large piece of solid glass water to obtain solid glass water.

10. The preparation method according to claim 9, characterized in that The tablet press speed in step (2) is 28-32 r / min and the pressure is 70-80 MPa; the mass of the solid glass water in step (3) is 2.7-2.8 g / tablet.

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