KR20170098097A - Car abrasive surface-coating material and manufacturing method of high hardness alumina - Google Patents

Abstract

The present invention provides a car surface polishing abrasive containing high hardness alumina, the car surface polishing abrasive comprising 5 to 6 wt% of the high hardness alumina with a particle size of 1 to 3 m, 5 to 6 wt% of an aqueous resin, 3 to 6 wt% of mineral oil, 12 to 15 wt% of a solvent, and 67 to 75 wt% of water, and a method of producing the high hardness alumina. The car surface polishing abrasive of the present invention has an effect that the car surface polishing abrasive can be used in all polishers including a rotary polisher and a dual polisher since the car surface polishing abrasive is made of liquid-phase one component abrasives by forming particles of the car surface polishing abrasive in a half-moon or crescent moon shape such that the car surface polishing abrasive has a sharp cutting structure. Further, the car surface polishing abrasive of the present invention enables an original color of the car surface to be restored by coating a polishing pad with the abrasives and performing a polishing operation on a polishing area of a car surface in accordance with a rotation speed (revolutions per minute) of the polisher such that the half-moon or crescent moon shaped sharp particles coated on the polishing pad evenly polish fine irregularity portions (fine flaws of irregularities, orange peel) by the rotation speed (revolutions per minute) of the polisher. Accordingly, the car surface polishing abrasive of the present invention is a very useful invention which has excellent workability and can reduce labor and working hours since the car surface polishing abrasive can obtain a desired gloss level through one polishing process.

Description

TECHNICAL FIELD [0001] The present invention relates to a vehicle surface polished abrasive containing high hardness alumina and a method of manufacturing high hardness alumina.

The present invention relates to a vehicle surface polishing varnish containing a high hardness alumina and a method for producing the hardness alumina. More particularly, the present invention relates to a vehicle surface polishing varnish which comprises a scratch, a scratch, a swirl mark, , A method for manufacturing a high gloss alumina and a vehicle surface polishing abrasive containing high hardness alumina capable of easily and rapidly removing various contaminants and capable of obtaining a gloss effect equivalent to that of a new car by improving the gloss function of a degraded automotive paint surface .

Generally, the surface of the vehicle, that is, the coating surface, is prevented from being corroded by external contaminants (such as acid rain or chemical smog), glossy gloss and color, and a long-lasting surface on which dust and foreign matter are hardly stuck Various kinds of car waxes and coatings are used to protect the painted surfaces of vehicles.

(Solid phase) coating agent composed of 2 wt% of silica (SiO2; inorganic silicon) pulverized to 10 to 100 nm size and 98 wt% of a binder material (bonding material) Silica (SiO2) in the powder state is coated on the surface of the coating film of the vehicle by the binder, and as a result, the surface of the coating film of the vehicle is prevented from being corroded by contaminants (such as acid rain or chemical smog) And the gloss is maintained for a long time.

In particular, a cerium-based abrasive containing cerium oxide having a concentration of an insoluble component present in the solution of 10 ppm or less by weight when dissolved in 20 g of a mixture of 12.5 g of 6-nitric acid and 12.5 g of 30% hydrogen peroxide is disclosed in Patent Document 10-2006- 0061370 and sintered alumina, silica and glass bead abrasive having a particle size of 20 탆 to 80 탆 in a circular or angular shape in which the abrasive is pulverized may be used. However, the conventional abrasives described above are used for a specific purpose It is difficult to easily and quickly remove swirl marks, scratches, orange peel, and various contaminants that degrade the reflection ability of light on the painted surface of the vehicle.

Particularly, the most abundant swirl mark on the painted surface is 1 μm or less, but the polishing is carried out in 3 to 4 steps (1000 rooms, 2000 rooms, 3000 rooms, finishing) since the particle size is 20 μm to 80 μm. Since the work takes a long time, the clear layer on the coated surface becomes thinner and a secondary damage (hologram) occurs.

[Prior Art Literature]

1. Patent Publication No. 10-2015-0100412

In order to solve the above-described problems, the present invention is based on the fact that the degree of gloss of a vehicle brightener depends not on the particle size or shape of the abrasive but on the sharpness of the abrasive particle surface, It is an object of the present invention to provide a vehicle surface polished abrasive containing a high hardness alumina and a method of producing the hardness alumina.

In order to achieve the above-mentioned object, the surface polished abrasive of the present invention comprises 5 to 6% by weight of high-hardness alumina having a particle size of 1 탆 to 3 탆, 5 to 6% by weight of water-soluble acrylic polymer, 3 to 6% by weight of mineral oil, 12 to 15% by weight of solvent and 67 to 75% by weight of water.

The high hardness alumina is characterized by a half-moon or a crescent-shaped structure.

In addition, the method for producing a high hardness alumina includes melting the sintered alumina having the angular and circular structure at a high temperature, and cooling the molten sintered alumina at an ultra low temperature instantaneously.

The effect of the present invention as described above is that the abrasive particles have a half-moon and a crescent-shaped particle shape, and have a sharp cutting structure. The abrasives are liquid one-component abrasives and can be used for all polishers (rotary and dual).

In addition, according to the present invention, when the abrasive is applied to the polishing pad and the abrasive portion is adjusted to the rotating speed (RPM) of the polishing machine, the abrasive particles of the half moon and the crescent moon on the polishing pad are finely And the unevenness (concavity and convexity microgas, orange peel) portions are polished flat to restore the primary color.

Therefore, the present invention is a very useful invention that can obtain a desired gloss with one polishing, is excellent in workability, and can reduce labor and work time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a reference diagram showing a step of forming a particle shape and gloss of a conventional vehicle surface polished abrasive.
FIG. 2 is a reference view showing a process of polishing the surface of a vehicle and polishing the surface of the vehicle according to an embodiment of the present invention. FIG.
Fig. 3 is a reference photograph for showing the gloss state of the vehicle surface before and after the polishing operation according to the embodiment of the present invention. Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Also, the singular forms used herein include plural forms as long as the phrases do not expressly mean the opposite. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like. Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further construed to have meanings consistent with the relevant technical literature and the present disclosure and are not to be construed as ideal or official unless defined otherwise.

The embodiment of the present invention described with reference to the perspective view specifically illustrates an ideal embodiment of the present invention. As a result, various variations of the illustration, for example variations in the manufacturing method and / or specification, are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture. For example, the regions shown or described as being flat may have characteristics that are generally coarse / rough and nonlinear. Also, the portion shown as having a sharp angle may be rounded. Thus, the regions shown in the figures are merely approximate, and their shapes are not intended to depict the exact shape of the regions, nor are they intended to limit the scope of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a vehicle surface polished abrasive containing a high hardness alumina according to the present invention and a method for producing a high hardness alumina will be described in detail with reference to the accompanying drawings.

First, in the drawings, it is noted that the same components or parts are denoted by the same reference numerals as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

The vehicle surface polished abrasive according to the embodiment of the present invention comprises 5 to 6% by weight of high hardness alumina having particle sizes of 1 탆 to 3 탆, 5 to 6% by weight of water-based resin, 3 to 6 12 to 15% by weight of a solvent, and 67 to 75% by weight of water.

Preferably, the particles of the hard alumina have a half-moon or crescent shape, and the particle size thereof is 1 to 3 [mu] m. This is because the sintered alumina particles are melted at a high temperature and rapidly cooled at a cryogenic temperature, (1/2) or 1/3 (1/3) in size due to the rapid cracking of the glass due to the shrinkage of the glass, and a sharp cutting angle (half moon, crescent moon) structure.

When the hard alumina particles have a half-moon or crescent-shaped particle shape and the particle size is 1 to 3 탆, they are the best as a polish agent. They have good hardness and hard particles, And the polishing efficiency is excellent.

In this case, when the high-hardness alumina particles having a size of 1 μm or less and a size of 3 μm or more were examined through a microscope, the projecting angle was not sharp because the shape was a tetrahedron (triangular pyramid shape) Mu] m to 3 [mu] m.

In this case, the content of the hard alumina particles is preferably 5 to 6% by weight. If the amount of the hard alumina particles is less than 5% by weight, the polishing efficiency is lowered and the work is repeated. The amount of water-based resin and mineral oil becomes insufficient. In this case, the particles are aggregated with each other, so that efficient polishing is not performed and scratches are generated on the paint surface of the vehicle.

The water-based resin is a necessary ingredient to maintain the proper amount of viscosity in the abrasive. During the polishing of the coating surface, the coating surface generates a lot of heat due to the frictional force and can damage the coating surface due to excessive polishing. When heat is generated in the process, the abrasive grains (hard alumina particles) are cemented at the time when the moisture of the abrasive is evaporated, and the abrasive particles are bonded between the water-based resins, Powdered powder (abrasive particles) is reduced, which is helpful for a comfortable work environment.

Therefore, the content of the water-base resin (water-soluble acrylic polymer) is preferably 5 to 6% by weight, and if it is 5% by weight or less, the alumina particles having a weak viscosity and being in a solid state will float on the floor due to specific gravity, to be.

When the content is more than 6% by weight, the viscosity is too high, which may cause hardening due to frictional heat during polishing, which is also undesirable.

In the present invention, the mixing ratio of the hard alumina particles to the water-based resin is preferably 1: 1 by weight.

Mineral oil plays a role to prevent secondary damage during polishing and to provide a stable lubricating action to increase the smoothness on the coating surface. At this time, the content of mineral oil is preferably 3 to 6% by weight.

In this case, when the content is less than 3% by weight, the polished surface may not be smooth and the polished surface may be damaged. When the polished surface is 6% by weight or more, the polished surface is covered with a scratch.

The solvent serves to clean the coating surface during the polishing process during the polishing operation, wherein the content of the solvent is preferably 12 to 15% by weight.

That is, when it is 12% by weight or less, the old times of the polished surface are not easily peeled off and the polished surface is disturbed by the polishing. In the case of 15% by weight or more, further increase is not meaningful because it is no longer related to cleanliness. Also, the content of other ingredients should be taken into account.

Water plays a very important role in controlling the polishing time (grinding time) in the polishing process, because without the time control, the coating surface may be further damaged. That is, in the polishing process, water is evaporated due to high temperature due to friction of abrasives, and when the water is evaporated, the water resin is combined with abrasive particles, that is, alumina particles. It is a time adjusting agent and a role of the time adjusting agent In the present invention, water is used.

Accordingly, when the amount of water is appropriate, the polishing is good. On the other hand, when the amount of water is too small, that is, when it is less than 69% by weight, the viscosity of the polishing agent becomes stiff due to evaporation of water, The content is reduced and the preferable composition ratio is changed, and the most preferable water content is 67 to 75% by weight.

In addition, since the evaporation rate of water varies depending on the temperature of a work site, it is necessary to increase the content of water in hot weather and to reduce the content of water in cold weather to some extent.

At this time, an appropriate amount of an additive may be further added to the present invention. As the additive, preservatives, fragrances, pigments and the like may be used.

As described above, in the present invention, it is preferable that the content of each component can be adjusted little by little in accordance with the change of the environment, so that the optimum polishing condition is satisfied.

The method comprises the steps of melting a sintered alumina of angular and circular structure at 1700 ° C and instantly cooling the molten sintered alumina at minus 175 ° C to obtain a hard alumina having a sharp cutting angle .

The method may further include the step of selecting particles having a size of 1 mu m to 3 mu m among the instantly cooled hard alumina particles.

The method for manufacturing the surface polished abrasive of the present invention will now be described with reference to the preferred embodiments.

Example 1

First, a water content of 70% by weight and an aqueous resin content of 5% by weight are dissolved by using a stirrer to a proper viscosity.

Then, in a separate container, 5% by weight of alumina and 14% by weight of solvent are diluted, and then the mixture is stirred and stirred at a proper speed. A suitable speed is about 200 RPM. However, the present invention is not limited to the speed, but a speed enough to prevent a sharp cutting angle (horn), which is a particle shape of alumina, is sufficient.

6% by weight of mineral oil and other additives are added, and the mixture is stirred again to prepare the polished abrasive of the present invention.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the present invention is not limited thereto and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

Claims (4)

5 to 6% by weight of a high hardness alumina having a particle size of 1 탆 to 3 탆, 5 to 6% by weight of an aqueous resin, 3 to 6% by weight of a mineral oil, 12 to 15% By weight based on the total weight of the polishing composition.
The vehicle surface gloss polishing abrasive according to claim 1, wherein the particle shape of the high hardness alumina is configured to have either a half-moon shape or a crescent shape.
Melting the sintered alumina of the angular and circular structure at 1700 캜, and cooling the molten sintered alumina at a temperature of minus 175 ° C for an instant.
The method of claim 3, further comprising the step of selecting particles having a size of 1 탆 to 3 탆 among the cooled high-hardness alumina particles.

Images