KR20150040593A - Concrete boundary block with modified nano sulfur and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a boundary block with modified nono sulfur and a method for manufacturing the same. The boundary block is produced using just one among sand, stone flour, or gravel or a mixed material with two or more ingredients among the sand, the stone flour, and the gravel and cement and water. The modified nano sulfur is added by 0.2-15 part by weight against the total weight of the above boundary block, and the coating solution containing 0.1-40 wt% of acrylic resin, 0.1-40 wt% of epoxy resin, 0.1-40 wt% of urethane resin and the rest of solvents is spread on the surface of the above boundary block. Therefore, the layer with the thickness of 1-30μm is formed. According to the invention, the boundary block has the following effects; the long life span is achieved as the damage by calcium chloride is prevented as the permeation resistance of chloride is maximized; the traffic safety is improved as the layer formed on the surface of the boundary block induces the scattered reflection of light and improves visibility; the contamination caused by raindrop etc. can be prevented as having the excellent antifouling; the damage by freezing and thawing can be minimized.

Description

Technical Field [0001] The present invention relates to a boundary block containing nano-modified sulfur and a method of manufacturing the same. BACKGROUND ART [0002]

The present invention relates to a boundary block containing nano-modified sulfur and a method for producing the same. More specifically, the present invention relates to a boundary block containing nano-modified sulfur and a method for producing the same, The present invention relates to a boundary block containing an improved nano-modified sulfur and a method of manufacturing the same.

In general, the boundary block is composed of a natural stone boundary block processed with natural stone, a cement boundary block formed by mixing cement and aggregate, a boundary block formed by polishing the surface using the column and cement, and a boundary block injected with synthetic resin have.

Prior art relating to such a boundary block is disclosed in a plurality of patents including Patent Publication No. 1997-0065466 and Patent Publication No. 2005-0080768.

However, since the natural stone boundary block, the cement boundary block, the polishing boundary block, and the synthetic resin boundary block can not reflect light, the boundary block can not be properly performed at night.

Of course, in consideration of the above-mentioned problems, reflection boundary blocks capable of obtaining a luminous effect by applying a luminous tape to the surface of a boundary block or painting with a luminous paint are currently in use.

However, not only the life span of the reflection by the luminous tape or the luminous paint was short, but also the luminous tape or the luminous paint adhered to and painted on the surface of the boundary block easily discolored or peeled off.

In recent years, cost-effective boundary blocks have been developed using crushed glass as a substitute for aggregate, but the reflectance has remarkably deteriorated and the performance enough to replace conventional luminous tapes and luminous paints has not been produced.

Furthermore, there is a problem that the expansion due to the alkali aggregate reaction by the alkali eluted in the long-term from the pulverized glass is reported, and the durability of the boundary block is lowered, which is not practical.

Related reference arts are disclosed in Japanese Patent Application Laid-Open No. 2000-0065760, Japanese Patent Application Laid-Open No. 2007-0005286, and the like.

However, since the conventional boundary block has a problem of freezing and thawing in winter due to its excellent water absorption rate as well as the aforementioned problems, the lifetime is shortened, corrosion caused by penetration of calcium chloride sprayed to prevent freezing, rainwater on the boundary block surface, There are still many problems to solve such as pollution.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and it is an object of the present invention to provide a method of forming a coating layer comprising a specific component on a surface of a boundary block and containing nano-modified sulfur, The present invention provides a boundary block containing nano-modified sulfur and a method of manufacturing the same.

The present invention provides a boundary block produced by using a mixture of sand, alum, gravel alone or a mixture of two or more kinds thereof, cement and water, In the boundary block, the modified sulfur further contains 0.2 to 15 parts by weight of the total weight of the boundary block; The surface of the boundary block is coated with a coating solution composed of 0.1-40% by weight of acrylic resin, 0.1-40% by weight of epoxy resin, 0.1-40% by weight of urethane resin and the remaining solvent to form a coating film having a thickness of 1-30 탆 Providing a boundary block containing nano-modified sulfur.

At this time, the boundary block may be further colored with an inorganic pigment.

In addition, the solvent may be one or more mixed solvents selected from methyl ethyl ketone, toluene, 2-butanol, butyl cellosolve, ethyl cellosolve, and diacetone alcohol. .

In addition, the present invention is a method for manufacturing a sand mill, comprising the steps of: sand, stone, gravel, and cement are charged into a stirrer and then uniformly dispersed and mixed; A second dry bean-bead step in which nano-modified sulfur is added to the first dry bean-added mixture in an amount of 0.2-15 parts by weight based on the total weight of the boundary block as a final product, followed by stirring and mixing to completely disperse the nano-modified sulfur; When the secondary dry bean is completed, the water is blanched while adding water; A molding and curing step in which the non-beamed mortar is molded into a molding machine and cured; A polishing step of polishing the surface of the boundary block to form a coating film when curing is completed; When the polishing is completed, a coating liquid consisting of 0.1-40 wt% of acrylic resin, 0.1-40 wt% of epoxy resin, 0.1-40 wt% of urethane resin, and the remaining solvent is applied to the surface of the polished boundary block to form a coating film, And a coating and curing step of curing the coating. The present invention also provides a method for producing a boundary block containing nano-modified sulfur.

In this case, in the water non-beam step, an inorganic pigment for color development may further be added.

Moreover, in the molding and curing step, it is preferable that the curing is carried out in such a manner that it is left in a cool environment at room temperature for a long time until completely dried.

In particular, in the coating and curing step, the thickness of the coated film is preferably 1-30 占 퐉. In the coating and curing step, the curing is performed by one of ultraviolet curing or thermosetting. In the case of ultraviolet curing It is preferable to cure using ultraviolet rays of a wavelength band of 0.1 to 1000 mm, and in the case of thermosetting, cure in a temperature range of 5 to 250 캜.

The boundary block according to the present invention maximizes resistance to penetration of chlorides, and does not suffer from damage such as calcium chloride, so that longevity can be achieved.

Also, the film formed on the surface of the boundary block induces diffuse reflection of light to improve visibility, thereby enhancing traffic safety.

In addition, the antifouling property is excellent, so that contamination due to rainwater or the like is not generated, and the water absorption rate is low, so that the effect of minimizing the damage of the freeze harmfulness can be obtained.

1 is a flow chart showing a method of manufacturing a color boundary block containing nano-modified sulfur according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The color boundary block containing the nano-modified sulfur according to the present invention normally contains the basic components required for manufacturing the boundary block.

These basic components include sand, stone, gravel, and cement. Sand, stone and gravel may be used singly or in combination of two or more kinds.

In addition, in the case of cement, ordinary back cement, folkland cement, crude steel cement, hardened steel cement and the like can be used.

In addition, the composition ratio thereof is not particularly limited, because it is within the range of the conventional composition ratio used in the production of a conventional boundary block. That is, since the weight ratios are already determined in the Korean Industrial Standard (KS), the composition ratios thereof need not be deviated from the present invention.

The present invention further includes nano-modified sulfur as a specific component in such a basic component.

In this case, the nano-modified sulfur should be added in a range of 0.2-15 parts by weight based on the total weight of the boundary block according to the present invention. If the added amount exceeds 15 parts by weight, surface depression phenomenon And if it is added in an amount of less than 0.2 parts by weight, the salt resistance and freeze-thaw resistance can not be obtained.

Such nano-modified sulfur is referred to as Hydraulic Sulfur Modified. In the process of converting a sulfur having a high melting point into a low melting point modified sulfur by a polymerization reaction, the sulfur of the crystal structure is converted into an amorphous substance, Chemical resistance, freeze-thaw resistance, salt resistance and the like.

However, because of the reason described above, currently, it is not used as a general-purpose construction material of nano-modified sulfur, and is mainly used only in the underground, underwater and underwater. For this reason, it is well explained in the registered patent No. 1211412 .

In other words, the present invention applies a modified sulfur, particularly a nano-modified sulfur, which has been partially used only in a special environment in the related art and has not been widely used and has been avoided. It is the most important feature of the present invention that the temperature difference between the inside and the outside of the block is removed to prevent the depressing phenomenon, so that the block is universally usable and commercialized.

In addition, the coating liquid applied to the surface of the boundary block to form a coating film is formed after the surface is polished. The thickness of the coating film is preferably 1-30 μm, and a coating film is formed by ultraviolet curing or thermosetting. In case of ultraviolet curing It is preferable to use ultraviolet rays of a wavelength band of 0.1 to 1000 mm, and in the case of thermosetting, it is preferable to cure in a temperature range of 5 to 250 캜.

The coating liquid for forming the coating film is composed of 0.1-40 wt% of acrylic resin, 0.1-40 wt% of epoxy resin, 0.1-40 wt% of urethane resin, and the remaining solvent.

At this time, the solvent may be one or more mixed solvents selected from methyl ethyl ketone, toluene, 2-butanol, butyl cellosolve, ethyl cellosolve and diacetone alcohol. have.

Here, the acrylic resin is a polymer of methacrylic acid methyl ester (methyl methacrylate) having a specific gravity of 1.18, which is made from acetone, cyanic acid, methanol as a raw material, and can be compression molded at 150 ° C or higher.

In addition, it is possible to cast a transparent plate by casting it into a mold. Since the plate thus formed is excellent in transparency, it can be used for a special window pane of an aircraft having a thickness of 10 cm or more, a lighting apparatus cover, Prisms, filters, watch glasses and the like.

Particularly, the adhesiveness is excellent and the adhesion is improved. In the present invention, it is added in order to maintain the stable adhesive property of the coating film.

In addition, the epoxy resin has a specific gravity of 1.230 to 1.189 and is excellent in mechanical properties such as bending strength and hardness, and does not cause generation of volatile substances and shrinkage in volume during curing, and has a large adhesive force on the material surface when cured.

In addition, pigments (pigments) can be arbitrarily colored by adding them, and excellent workability such as molds, fillings, and encapsulation are exhibited.

In the present invention, it is added so as to be complementary to the acrylic resin in order to increase the coloring property and induce various color rendering and simultaneously maintain the film stability.

The urethane resin is a synthetic polymer having a urethane bond (-NH-CO-), for example, produced by addition polymerization of diisocyanate and glycol. It is used as an adhesive for foaming, retort, and composite film (laminate) for low-temperature insulation.

Particularly, in the present invention, a polyester type should be used to increase the antifouling property. When heated to 150 ° C or more, the OH group of the polyester and the blocked NCO group formed by the cross-linking agent (blocked isocyanate) do.

Finally, the solvent is used as a kind of solvent for the dissolution of the above-mentioned resin.

In summary, the boundary block according to the present invention comprises 0.2 to 15 parts by weight of the nano-modified sulfur which is rejected in the related art, based on the total weight of the boundary blocks, in a dispersed state, And has a structure in which a coating film is formed to a thickness of 1-30 mu m by a coating solution.

In addition, pigments in the manufacturing process, that is, pigments, among them inorganic pigments, may be further added to produce colors. Herein, the inorganic pigment does not need to be limited, because various inorganic pigments can be used depending on the color to be produced, and many inorganic pigments are known, so it may be selected from among them.

A method of manufacturing a boundary block having such features will now be described.

In the boundary block manufacturing method according to the present invention, first, a primary key beam step S100 is performed.

The primary dry beam step (S100) is completely different from the conventional method in which water is put in and mixed with water, and sand, lime, gravel, cement and the like are put into an agitator without water being initially injected, It is a step to shine.

Next, the second key beam step S110 is performed.

In the second dry beam step S110, the nano-modified sulfur is added to the primary dry beam-admixture in an amount of 0.2-15 parts by weight based on the total weight of the boundary block, which is the final product, to be.

Thus, when the secondary gun beam is completed up to this point, water splashing step S120 is performed while water is added.

The water non-beam step (S120) is a step of making a kind of mortar. At this time, a pigment, that is, a pigment may be further added so that a color can be produced as required.

Thereafter, a molding and curing step (S130) is performed in which the non-beam finished mortar is put into a molding machine and molded and cured.

At this time, the molding is performed through a mold, that is, a molding machine, and it is preferable that the curing is carried out for a long period of time until the curing is completely dried in a cool environment at room temperature.

After the curing is completed through the above steps, a polishing step (S140) is performed to polish the surface of the boundary block to form a coating film.

The polishing step (S140) is a step of keeping the surface roughness constant so as to have a uniform and even film thickness, and a grindstone can be used.

When polishing is completed, a coating and curing step (S150) is performed in which the coating solution described above is applied to the surface of the boundary block to form a coating film having a predetermined thickness, and the coating film is cured.

The coating and curing step (S150) is preferably a spray coating method, and the curing may be selected from ultraviolet curing or thermal curing methods as described above.

Since the surface block is formed on the surface, it is possible to prevent visibility due to irregular reflection of light caused by the headlight when driving the vehicle, thereby preventing safety accidents, Since it is protected by coating film even when it is sprayed with calcium chloride, corrosion resistance hardly occurs due to high chloride penetration resistance, so it is possible to achieve longevity by high durability as well as discoloration. In addition, since the water absorption rate is minimized, the damage of freezing and thawing is also prevented.

Hereinafter, examples will be described.

[Example]

In order to confirm the characteristics of the boundary block manufactured in accordance with the present invention, the present inventors of the present invention and the inventors of the present invention and nano-modified sulfur-containing products, The melting resistance was tested. Here, the nano-modified sulfur contained in the inventive material was 10 parts by weight and the thickness of the coating film was 20 占 퐉. For comparison, the same amount of nano-modified sulfur was added to the comparative material but no coating film was formed.

In this case, the antifouling property was evaluated by visually checking whether or not any residual material adhering to the surface was sprayed with wastewater, and the chloride resistance (= chloride penetration resistance) was measured by measuring the penetration depth of chloride ion. The inventive material and the comparative material were cured under the same conditions, and then immersed in saline having a salt concentration of 3.5% at 30 ° C for 10 weeks, and the depth of penetration of chloride ions was measured. The measurement was conducted by the fluorine-silver nitrate silver method.

In addition, the freeze-thaw resistance was determined by artificially repeating the freeze-thaw cycles, and when the cycle became 300, it was checked whether or not the aggregate fell out. The results are shown in Table 1.

division
Antifouling Salt resistance
(Penetration depth)
Freeze-thaw resistance
Remarks Conventional material Poor (adhesion occurred) 20mm Fall out Invention material Good (no attachment) none none Comparative material Poor (adhesion occurred) 12.5 mm  Cracking Appearance minute dent

As can be seen from the results shown in Table 1, the inventive material according to the present invention was found to be superior in terms of antifouling property, chloride penetration resistance and freeze-thaw resistance compared to the boundary block produced by the conventional method.

Furthermore, although not shown in Table 1, an effect of maximizing the visibility was also confirmed because the diffused reflection effect was excellent during illumination.

On the other hand, in the case of the prior art, the conventional problem is expressed as if it is not indispensable, and in the case where there is no coating film presented as the comparative material, the surface depression is locally generated and the external strain is confirmed. As a result, it appears that there is a risk of breakage during long-term use.

As described above, the boundary block according to the present invention is considered to have considerable competitiveness as it solves the problems that have not been solved by the persistent problem for a long time in the field.

S100: Primary key beam step S110: Second key key beam step
S120: water non-beam step S130: molding and curing step
S140: Polishing step S150: Coating and curing step

Claims (8)

In a boundary block made of a mixture of sand, stone, gravel alone or in a mixture of two or more kinds, cement and water;
In the boundary block, the modified sulfur further contains 0.2 to 15 parts by weight of the total weight of the boundary block;
The surface of the boundary block is coated with a coating solution composed of 0.1-40% by weight of acrylic resin, 0.1-40% by weight of epoxy resin, 0.1-40% by weight of urethane resin and the remaining solvent to form a coating film having a thickness of 1-30 탆 Boundary block containing nano-modified sulfur characterized.
The method of claim 1,
Wherein the boundary block is further colored with an inorganic pigment. ≪ RTI ID = 0.0 > 21. < / RTI >
The method of claim 1,
The solvent is one or more mixed solvents selected from methyl ethyl ketone, toluene, 2-butanol, butyl cellosolve, ethyl cellosolve and diacetone alcohol. A boundary block containing nano-modified sulfur.
Sand, stone, gravel, and cement are added to a stirrer and mixed uniformly.
A second dry bean-bead step in which nano-modified sulfur is added to the first dry bean-added mixture in an amount of 0.2-15 parts by weight based on the total weight of the boundary block as a final product, followed by stirring and mixing to completely disperse the nano-modified sulfur;
When the secondary dry bean is completed, the water is blanched while adding water;
A molding and curing step in which the non-beamed mortar is molded into a molding machine and cured;
A polishing step of polishing the surface of the boundary block to form a coating film when curing is completed;
When the polishing is completed, a coating liquid consisting of 0.1-40 wt% of acrylic resin, 0.1-40 wt% of epoxy resin, 0.1-40 wt% of urethane resin and the remaining solvent is applied to the surface of the polished boundary block to form a coating film, And a coating and curing step of curing the coating film. ≪ RTI ID = 0.0 > 21. < / RTI >
The method of claim 4,
Wherein the inorganic pigment for color development is further added in the water non-beam step.
The method of claim 4,
Characterized in that the curing is carried out in the molding and curing step in such a manner that the curing is carried out for a long time in a cool environment at room temperature until it is completely dried.
The method of claim 4,
Wherein the thickness of the applied coating in the coating and curing step is 1-30 占 퐉.
The method of claim 4,
In the coating and curing step, the curing is performed in one of ultraviolet curing or thermosetting. In the case of ultraviolet curing, curing is performed using ultraviolet rays in a wavelength band of 0.1 to 1000 mm, and in the case of thermosetting, Lt; RTI ID = 0.0 > 1, < / RTI > curing in a temperature range.

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