Multifunctional windshield washer fluid as well as preparation method and application thereof

Abstract

The invention discloses multifunctional windshield washer fluid as well as a preparation method and application thereof. The windshield washer fluid contains siloxane with terminal reactive groups. The windshield washer fluid provided by the invention has good anti-icing performance, the adhesion strength of ice on the glass surface after the windshield washer fluid is applied is reduced by more than 10 times, and the windshield washer fluid has obvious anti-icing effect. The glass water disclosed by the invention can be sprayed at the temperature of-20 DEG C, so that an anti-fouling and anti-icing coating can be quickly formed on the surface of glass to meet the requirement of keeping the surface of the glass clean at low temperature in winter, and the low-adhesion effect of a solid pollution agent on the surface of the glass can be realized under extreme conditions; the deicing device is suitable for simple and rapid deicing of the glass surface in a glass icing environment in winter in northern China. A coating formed by the windshield washer fluid is small in surface tension and excellent in lubricating property, the friction force between glass and a wiper blade can be reduced, and then the service life of a windscreen wiper is effectively prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass water, and particularly relates to a multifunctional glass water, a preparation method thereof and an application thereof. Background Art

[0002] As a glass cleaning liquid, glass water is a consumable for maintaining glass cleanliness. With the rapid development of the automotive market, glass water has become one of the essential consumables for automotive supporting. In addition to the cleaning function, high-quality glass water should also have properties such as lubricity, anti-freezing, and anti-static. However, there are currently a wide variety of glass waters on the market, and the quality is uneven. Most glass waters have single functions or poor overall performance. Especially in the extremely low temperature environment in winter in the north, the ice and frost on the windshield cannot be removed with existing glass water, which will affect the driving experience of car users and the normal traffic safety, and even cause traffic accidents, directly threatening the personal safety of drivers. At the same time, a large amount of spraying of glass water will also cause waste and increase the burden on the environment. The organic components therein will damage the ecological balance of the soil and affect the growth and development of surrounding plants. If it flows into the sewer or is discharged into the river, it will also pollute the water resources, thereby damaging the water body ecological environment. At the same time, the components of glass water will also have an adverse impact on human health, such as causing discomfort or even damage to parts such as eyes, nose, and skin. Summary of the Invention

[0003] In order to improve the above technical problems, the present invention provides a multifunctional glass water with anti-fouling and anti-icing properties, a preparation method thereof and an application thereof, so as to meet the use under low temperature conditions in winter, and at the same time avoid solvent waste to weaken the adverse impact on the environment.

[0004] To achieve the above invention purpose, the present invention adopts the following technical solutions:

[0005] A glass water containing a siloxane having a terminal reactive group. Preferably, the concentration of the siloxane having a terminal reactive group in the glass water can be 1 to 10 wt%, for example, 1 wt%, 2 wt%, 5 wt%, 8 wt%, 10 wt%.

[0006] According to an embodiment of the present invention, the siloxane having a terminal reactive group is selected from low molecular weight chlorosilane double-terminal silane monomers (such as at least one of dichlorodimethylsilane, 1,3-dichlorotetramethyldisiloxane, and dimethoxydimethylsilane, etc.) or high molecular weight single-terminal siloxanes (such as trimethoxy-terminated polysiloxane or vinyl-terminal polysiloxane, etc.).

[0007] According to an embodiment of the present invention, the weight-average molecular weight of the large molecular weight mono-terminal group siloxane is 1,000 to 100,000, and examples are 1,000, 3,000, 5,000, 8,000, 10,000, 20,000, 50,000, 100,000.

[0008] According to an embodiment of the present invention, the glass water may further contain an acid catalyst. For example, the acid catalyst includes at least one of molecules that can generate hydrogen ions, such as hydrochloric acid, Lewis acid, and chlorosilane.

[0009] In one embodiment of the present invention, the acid catalyst may be the same as the siloxane having a terminal reactive group. For example, the acid catalyst may be dichlorodimethylsilane, 1,3-dichlorotetramethyldisiloxane.

[0010] According to an embodiment of the present invention, the concentration of the acid catalyst in the glass water is 0.1 to 10 wt%, and examples are 0.1 wt%, 0.2 wt%, 0.5 wt%, 1 wt%, 2 wt%, 5 wt%, 8 wt%, 10 wt%.

[0011] According to an embodiment of the present invention, the glass water further contains a solvent. For example, the solvent is a good solvent for the siloxane having a terminal reactive group. Preferably, the solvent is at least one of isopropyl alcohol, n-hexane, ethylene glycol, etc.

[0012] The present invention also provides a method for preparing the above glass water, including mixing the above components in proportion.

[0013] According to an embodiment of the present invention, the mixing method may be ultrasonic or rotary mixing. For example, the ultrasonic time is 1 to 30 min, and an example is 10 min. Also, for example, the rotary mixing time is 1 to 60 s, and an example is 30 s.

[0014] The present invention also provides the application of the above glass water in glass anti-fouling and anti-icing, preferably in the windshield of an automobile, especially in the windshield of an automobile in an ultra-low temperature environment in winter in the north.

[0015] The present invention also provides a method for improving the anti-fouling and anti-icing performance of glass, including applying the above glass water to a substrate body with such a need.

[0016] According to an embodiment of the present invention, the substrate body is glass, such as the windshield of an automobile, especially the windshield of an automobile in an ultra-low temperature environment in winter in the north.

[0017] According to an embodiment of the present invention, the application may be selected from known means in the art, such as methods of applying the glass water to the glass surface by spraying, roller coating, brushing, coating, dipping, etc.

[0018] The present invention also provides a substrate, which comprises a coating and a substrate body, wherein the coating is prepared from the above-mentioned windshield washer fluid.

[0019] According to an embodiment of the present invention, the thickness of the coating is 1-10 nm, preferably 3-10 nm, and exemplarily 7 nm.

[0020] According to an embodiment of the present invention, the ice adhesion strength on the surface of the coating is less than 30 kPa, for example 25 kPa, 20 kPa.

[0021] According to an embodiment of the present invention, the coating is located on the surface of the substrate body.

[0022] Preferably, the substrate body has the meaning as described above.

[0023] The present invention also provides a method for preparing the above-mentioned substrate, which includes applying the above-mentioned windshield washer fluid on the substrate body required thereby.

[0024] According to an embodiment of the present invention, the application can be selected from known means in the art, such as spraying, roll coating, brushing, coating, dipping, etc., methods for applying the windshield washer fluid on the surface of the substrate body.

[0025] According to an embodiment of the present invention, the method further includes a step of drying or making dry the substrate body applied with the windshield washer fluid.

[0026] According to an embodiment of the present invention, the dry film thickness of the coating is 1-10 nm, preferably 3-10 nm, and exemplarily 7 nm.

[0027] The present invention also provides a method for extending the service life of a windshield wiper, which includes applying the above-mentioned windshield washer fluid on the substrate body required thereby.

[0028] According to an embodiment of the present invention, the substrate body is glass, such as the windshield of an automobile, especially the windshield of an automobile in an ultra-low temperature environment in winter in the north.

[0029] According to an embodiment of the present invention, the application can be selected from known means in the art, such as spraying, roll coating, brushing, coating, dipping, etc., methods for applying the windshield washer fluid on the surface of the glass.

[0030] Advantageous effects of the present invention:

[0031] (1) The glass water of the present invention has a small dosage, obvious anti-icing and anti-fouling effects, can effectively reduce the coating times of glass water, and is easier to meet the environmental protection requirements. By applying the glass water of the present invention to the glass surface to form a coating, the anti-fouling performance of the glass surface can be achieved. The anti-solid adhesion performance of the coating formed by applying the glass water of the present invention to the glass surface can be determined by the lateral adhesion strength τ = F / A (where: F is the shear force (unit: N), A is the area of the shear surface (unit: m 2 )) to determine the adhesion performance of the solid contaminant on the coating surface. The coating formed by applying the glass water of the present invention to the glass surface has a significant effect of reducing adhesion for solid contaminants such as mud, paint, and paraffin. Under the action of gravity or external force, the above solid contaminants can be easily removed from the glass surface after applying the glass water.

[0032] (2) The glass water of the present invention has good anti-icing performance. The adhesion strength of ice on the glass surface after applying the glass water is reduced by more than 10 times, and it has a significant anti-icing effect, which can be applied to the simple and rapid de-icing of the glass surface in the freezing environment in the north in winter.

[0033] (3) The glass water of the present invention can be sprayed at -20°C to quickly form an anti-fouling and anti-icing coating on the glass surface to meet the need to keep the glass surface clean at low temperatures in winter, and is beneficial to achieving a low adhesion effect of solid contaminants on the glass surface under extreme conditions.

[0034] (4) The coating formed by the glass water of the present invention has a small surface tension and excellent lubricating properties, can reduce the friction between the glass and the wiper blade, and thus effectively extend the service life of the windshield wiper. Description of the Drawings

[0035] Figure 1 It is a characterization result diagram of the lateral adhesion strength of the glass surface after multiple ice adhesion-desorption cycles.

[0036] Figure 2 It is a display diagram of the complete desorption of 10 cm × 15 cm × 1 cm ice under external force after spraying the glass water prepared in Example 1 onto the glass.

[0037] Figure 3 It is a measurement result diagram of the adhesion strength of common solid stains in life on the glass surface before and after applying the glass water of Example 1.

[0038] Figure 4 It is the measurement result of the ice adhesion strength after the glass water of Example 2 is applied to the glass surface at -20°C and 20°C respectively.

[0039] Figure 5 It is the measurement result of the transparency of the glass surface after applying the glass water of Example 2. Detailed Implementation Modes

[0040] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate and explain the present invention by way of example, and should not be construed as limiting the protection scope of the present invention. All technologies implemented based on the above content of the present invention are covered within the scope of protection intended by the present invention.

[0041] Unless otherwise specified, the raw materials and reagents used in the following embodiments are all commercially available products, or can be prepared by known methods.

[0042] Example 1

[0043] A kind of glass water, comprising the following components by weight: 5 parts of polydimethylsiloxane with a single-end trimethoxy group and a weight-average molecular weight of 3000, 0.5 part of dichlorodimethylsilane acid catalyst, and 100 parts of isopropanol.

[0044] The preparation method of the above glass water comprises the following steps:

[0045] Taking polydimethylsiloxane with a single-end trimethoxy group and a weight-average molecular weight of 3000 as the main component, with a weight of 5 parts, dichlorodimethylsilane as the acid catalyst, with a weight of 0.5 part, and 100 parts of isopropanol, and uniformly mixing by ultrasonic for 10 min to obtain glass water.

[0046] Spray the glass water prepared in this example onto the glass, wait for the solvent to volatilize and wipe it dry to obtain a glass surface with an anti-fouling and anti-icing coating. After 30 times of ice desorption friction, measure the lateral adhesion strength after ice adheres to the glass surface (characterize the adhesion strength of ice on the glass surface by measuring the ratio of the lateral shear force to the contact area after ice adheres to the glass surface), and the results are as Figure 1 shown. The results in the figure show that: the glass water prepared by the present invention can significantly reduce the adhesion strength of ice on the glass surface. The adhesion strength of ice on the glass surface after applying the glass water prepared in Example 1 is less than 20 kPa, and ice can spontaneously desorb from the glass surface under the action of gravity. And the anti-icing performance of the glass surface can still be maintained after multiple ice shear friction desorptions, and this performance is stable for a long time. Therefore, the spraying times of glass water can be effectively reduced to reduce environmental pollution.

[0047] Spray the glass water prepared in this example onto the glass, wait for the solvent to volatilize and wipe it dry to obtain a glass surface with an anti-fouling and anti-icing coating. Under the action of an external force, a 10 cm×15 cm×1 cm ice block can be completely desorbed on the glass surface with an anti-fouling and anti-icing coating (as Figure 2 ).

[0048] After the glass sheet was immersed in the glass water prepared in this example for 10 minutes, the glass surface already had an obvious anti-fouling effect. And when the immersion reaction time was appropriately increased under the environment of -20°C, the anti-fouling and anti-icing effects equivalent to those of soaking and reacting at 20°C for 10 minutes could be achieved after soaking and treating for 60 minutes. This shows that the glass water of the present invention can meet the requirements of keeping the glass clean at low temperatures in winter (such as Figure 3 ).

[0049] Example 2

[0050] A kind of glass water, comprising the following components by weight: 10 parts of dichlorodimethylsilane acid catalyst, 500 parts of isopropanol, and 500 parts of water.

[0051] The preparation method of the above glass water comprises the following steps:

[0052] Taking dichlorodimethylsilane as the main component, (through the autocatalytic polycondensation reaction of hydrochloric acid generated by hydrolysis, linear polydimethylsiloxane is formed on the solid surface.) Its weight is 10 parts, and 1000 parts of a reaction solvent with a volume ratio of ethylene glycol to water of 1:1. Rotate and mix the solution at 3000 rpm for about 30 seconds, and let it stand for 5 minutes before use at room temperature to obtain the glass water.

[0053] At -20°C and 20°C respectively, immerse the glass sheet in the glass water prepared in this example for more than 30 seconds to obtain glass surfaces with anti-fouling and anti-icing coatings. Measure the adhesion strength of ice on the glass surface, and the results are as Figure 4 shown. It can be seen from the figure that after the glass sheet is immersed in the glass water prepared in this example for 30 seconds, the reactant solution (glass water) can be removed by simply tilting, without leaving residual stains. And it has a lubricating repelling effect on common stains in life such as red wine, white wine, seed oil, and castor oil, and at the same time has an obvious anti-icing effect.

[0054] Spray the glass water prepared in this example onto the glass, wipe it dry after the solvent volatilizes, and obtain a glass surface with anti-fouling and anti-icing coatings. Measure the adhesion strength of common solid stains in life, such as mud, clay, paint, gypsum, pigment, cement, paraffin, ice, on the glass surface before (glass surface) and after (coating surface) applying the glass water of Example 2, and the results are as Figure 4 shown. It can be seen from the figure that the glass surface after applying the glass water prepared in Example 2 can significantly reduce the adhesion of common solid stains in life, and the adhesion strength to ice is reduced by more than 10 times.

[0055] At 20°C, immerse the glass sheet in the glass water prepared in this example for 10 minutes to obtain a glass surface with anti-fouling and anti-icing coatings, and measure the transparency of the glass by an ultraviolet-visible spectrophotometer. The results are as Figure 5As shown. It can be seen from the figure that after applying the glass water prepared in this embodiment to the glass surface, the transparency of the glass surface is almost the same as that of the original glass, indicating that the glass water of the present invention has basically no effect on the transparency of the glass after being applied to the glass surface.

[0056] The above describes the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A glass water, characterized in that: The glass water contains a siloxane having a terminal reactive group. Preferably, the concentration of the siloxane having a terminal reactive group in the glass water can be 1-10 wt%.

2. The glass water according to claim 1, wherein The siloxane having a terminal reactive group is selected from low molecular weight chlorosilane bis-terminal silane monomers (such as at least one of dichlorodimethylsilane, 1,3-dichlorotetramethyldisiloxane, and dimethoxydimethylsilane, etc.) or high molecular weight mono-terminal siloxanes (such as trimethoxy-capped polysiloxane or vinyl-terminal polysiloxane, etc.). Preferably, the weight average molecular weight of the high molecular weight mono-terminal siloxane is 1000-100000. Preferably, the glass water may further contain an acid catalyst. For example, the acid catalyst includes molecules that can generate hydrogen ions, such as at least one of hydrochloric acid, Lewis acid, and chlorosilane. Preferably, the acid catalyst can be the same as the siloxane having a terminal reactive group. For example, the acid catalyst can be dichlorodimethylsilane, 1,3-dichlorotetramethyldisiloxane. Preferably, the concentration of the acid catalyst in the glass water is 0.1-10 wt%. Preferably, the glass water further contains a solvent. For example, the solvent is a good solvent for the siloxane having a terminal reactive group. Preferably, the solvent is at least one of isopropyl alcohol, n-hexane, ethylene glycol, etc.

3. The preparation method of the glass water according to claim 1 or 2, characterized in that, The preparation method includes mixing the above components in proportion.

4. Application of the glass water according to claim 1 or 2 in glass anti-fouling and anti-icing, preferably in the windshield of an automobile, especially in the windshield of an automobile in an ultra-low temperature environment in winter in the north.

5. A method for improving the anti-fouling and anti-icing performance of glass, characterized in that, It includes applying the glass water according to claim 1 or 2 on the substrate body in need thereof.

6. The method according to claim 5, characterized in that, The substrate body is glass, such as the windshield of an automobile, especially the windshield of an automobile in an ultra-low temperature environment in winter in the north. Preferably, the application can be selected from methods such as spraying, roll coating, brush coating, coating, dipping, etc. to apply the glass water on the glass surface.

7. A substrate, the substrate includes a coating and a substrate body, wherein the coating is prepared from the glass water according to claim 1 or 2. Preferably, the thickness of the coating is 1-10 nm, preferably 3-10 nm. Preferably, the ice adhesion strength on the surface of the coating is less than 30 kPa. Preferably, the coating is located on the surface of the substrate body.

8. The method for preparing the substrate according to claim 7, characterized in that, The preparation method includes applying the glass water according to claim 1 or 2 on the substrate body in need thereof.

9. The preparation method according to claim 8, characterized in that, The application can be selected from methods such as spraying, roll coating, brush coating, coating, dipping, etc. to apply the glass water on the surface of the substrate body. Preferably, the method further includes a step of drying or allowing to dry the substrate body applied with the glass water. Preferably, the dry film thickness of the coating is 1-10 nm, preferably 7 nm.

10. A method for prolonging the service life of a windshield wiper, characterized in that, It includes applying the glass water according to claim 1 or 2 on the substrate body in need thereof.

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