KR100665189B1 - Paving block to aided the blind - Google Patents

Abstract

The present invention relates to a braille block that can be applied to a manhole cover or crosswalk as well as a general road surface using a two-component acrylic composition having a durable thin film type as a road surface display material layer.

The method of manufacturing the braille block,

a) applying and curing the surface layer composition on the road surface; b) attaching a die-coated die to a hardened surface layer having a plurality of through holes having tapered wall surfaces extending from top to bottom; c) filling and curing the two-component acrylic composition, which is a braille display material layer, in the through-hole of the formwork; d) removing the formwork; It includes, and further comprising the step of applying and drying the primer layer before applying the surface layer on the surface of the road surface, the braille block surface treatment agent layer, such as overcoating material, non-slip colored silica or surface treatment material It is also possible to apply.

Braille block, two-component acrylic composition, slip agent

Description

Braille block and its manufacturing method {Paving block to aided the blind}

1 is a partially enlarged internal configuration of the braille block attached to the form according to the present invention.

Figure 2 is an enlarged internal configuration of the braille block filled with the braille display material composition according to the present invention.

3 is a partially enlarged internal configuration of the completed braille block according to the present invention.

Figure 4 is a manufacturing process of the braille block according to the present invention.

-Major symbols in drawings-

1-road surface 3-primer layer

5-Surface layer 7-Braille layer

9-Surface Treatment Layer 10-Formwork

11-through hole 13-tapered wall

The present invention relates to a braille block for guiding a road to a disabled person, and is cheaper than conventional braille blocks, has excellent durability, light weight, easy installation, and is easy to recycle. It is about a method.

In general, surface walls, roads and floors in places with frequent entry by people, such as sidewalks, walkways, station platforms, central plazas, hospitals, stores, schools, etc. (surface irregularities in the form of bricks for decorative purposes, or visually impaired persons) In the form of a joint such as a spherical or elliptic protrusion pattern for the purpose of inducing the These surface blocks are made of concrete, synthetic rubber, vinyl chloride resin, etc., and conventionally produce block boards having predetermined projections on the surface, and are installed or installed on the asphalt or concrete road surface.

In general, the sidewalk block is formed of a concrete material, in the case of the concrete sidewalk block is weak to impact, a large number of damage during the production, transport, installation work, and even after installation there was a problem that is easily broken over time, and the upper surface Painted concrete sidewalk blocks are easily discolored and have a heavier weight than other materials due to the nature of the concrete, making installation workers feel fatigued and loss of logistics costs such as the inevitable use of heavy equipment during transportation and loading and unloading operations. In addition, there was a considerable problem, it is difficult to recycle and the case of the braille block has a problem that the molding of the braille protrusion formed on the upper portion of the braille block is difficult.

The present invention relates to a braille block, it is possible to install not only the road surface but also manhole cover or crosswalk without installing a braille block on the road without digging, it is durable and inexpensive braille press using synthetic resin We want to provide a block.

Another object of the present invention is to provide a two-component acrylic resin composition which is cured in a short time on a road surface by using a two-component acrylic resin and is easy to produce.

The present invention relates to a braille block that can be applied to a manhole cover or crosswalk as well as a general road surface using a two-component acrylic composition having a durable thin film type as a road surface display material layer.

The method of manufacturing the braille block,

a) applying and curing the surface layer (5) composition on the road surface (1) (S2); b) attaching the die-coated die 10 to the hardened surface layer 5 having a plurality of through-holes 11 having tapered wall surfaces 13 extending from top to bottom, the backside of which is coated with an adhesive ( S3); c) filling and curing the two-component acrylic composition, which is the braille display material layer 7, in the through-hole of the die 10 (S4); d) removing the formwork (10) (S5); It includes.

In another aspect, the present invention may further comprise the step (S1) of applying and drying the primer layer (3) before applying the surface layer on the surface of the road surface, the braille block is overcoated material, non-slip colored silica or surface It is also possible to apply | coat (S6) the surface treating agent layer 9 like a processing material.

Therefore, the present invention comprises the steps of applying a primer layer on the road surface; Applying a surface layer thereon; Attaching the formwork thereon; Forming a braille display layer by filling the through-hole of the form with the braille display layer composition; Removing the formwork; And a method which can add coating of a surface treating agent layer such as an overcoating material, an anti-slip colored silica sand or a surface treatment material.

In the present invention, the step of directly applying a display material layer without applying the primer layer on the road surface; Attaching the formwork thereon; Forming a braille display layer by filling the through-hole of the form with the braille display layer composition; Removing the formwork; And methods for adding a coating agent layer such as an overcoating material, an anti-slip colored silica sand or a surface treatment material are also included.

The primer layer 3 is a layer applied to increase the adhesion between concrete or asphalt and the surface layer, mainly, polyacrylate, polymethacrylate, epoxy resin, polyester, polyvinyl alcohol, ethylene vinyl acetate, poly Urethane etc. are preferable. The primer is to be applied to the road surface to strengthen the adhesion between the road surface and the resin composition surface layer, so that the surface layer layer coated on the asphalt or cement sidewalk block of the road after construction. As a solution for dissolving the primer resin, ketones such as acetone, hydrocarbons substituted with halogen such as methylene chloride, and aromatic compounds such as toluene, etc. are used. It is good to remove the back. As the method of applying the primer layer, a method such as spray coating or brush coating may be used.

Next, the surface layer 5 forms a basic frame of the braille block according to the present invention as a two-component acrylic composition, and forms a square base layer formed under the braille display material layer. The surface layer is generally coated with a brush on the road surface, but in order to facilitate the application of the surface layer composition, it is necessary to mask (tap) the periphery with a tape to fill the resin composition inside the tape. It is possible. In this case, it is possible to coat the surface layer composition only to a desired thickness in a certain thickness can be applied more efficiently. At this time, the thickness of the surface layer is preferably applied to 0.05 to 0.1mm, more preferably 0.06mm is good, when applied to a thickness of more than the jaw occurs because it may be a barrier to the pedestrian walking, less than The thickness is difficult to apply.

Since the surface layer is often used without taping, unlike the braille display material layer described below (the braille display material layer is well filled to the detail of the through-hole of the formwork without adding a thickener to the composition). The thickener should be used because it should not flow and bleed other than the position, but it should be used within the range that the viscosity is too high and flowability is not lost at all. It is preferable to have 4000-6000 mPa * s at 180 degreeC.

The primer layer, the surface material layer, and the braille display material layer may be formed of the same resin composition or different resin composition, it is more preferable to apply the resin of the same system can increase the adhesion.

It is preferable that the resin composition used for the surface layer of this invention is chosen from acrylic resin, It is 1-3 weight part of coloring pigments, 70-73 weight part of fillers, 0.5-3 weight part of thickeners, and a hardening accelerator with respect to 100 weight part of resin. It consists of 0.1-0.3 weight part and the 1st liquid which used 0.1-2 weight part of slip agents, and the 2nd liquid which is a hardening | curing agent.

The acrylic resin is 4 to 20% by weight of an acrylic oligomer having a molecular weight of 1000 to 35000, 6 to 30% by weight of a polymer having a molecular weight of 35000 to 300000, 5 to 10% by weight of a 3 to 6 functional acrylic monomer, and 85 to 40% by weight of an acrylic monomer. It is preferable to use.

The acrylic oligomer may be any one selected from methyl methacrylate, ethyl acrylate, methyl acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, unsaturated polyester resin, and the like. More preferred. Urethane acrylate is characterized by providing a coating film that is hardly cured by an initiator and has excellent mechanical properties, heat resistance, fouling resistance, abrasion resistance, and excellent elasticity and toughness. In addition, since ultraviolet curing occurs, a compound of an acrylate derivative is preferable to a compound of a methacrylate derivative having a relatively slow reaction rate.

The 3- to 6-functional acrylic monomers are heat resistance, weather resistance, chemical resistance, abrasion resistance, such as trimethylolpropane triacrylate, trimethylolpropaneethoxytriacrylate, pentaerythritol tri, tetra, penta and hexa (meth) acrylate This is good, and the thing which has high crosslinking density and high glossiness is used. As the functional group of the monomer increases, a film having a high curing speed and excellent heat resistance is formed. As a compact network structure is obtained, the crosslinking density is increased to increase wear resistance and mechanical strength. However, if the functional group is too high, the viscosity rises and becomes brittle, so it should be used properly. The polyfunctional acrylate monomers have good viscosity lowering and flexibility when used, but fouling resistance deteriorates, so it is preferable to use the polyfunctional acrylate monomer within 10% by weight.

The acrylic monomer may be selected from methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethyl hexyl acrylate, 2-hydroxy ethyl methacrylate, and the like.

As another component of the present invention, first, the colored pigment is yellow when yellow, and titanium when white, and the filler is any one selected from calcium carbonate powder, silica powder, talc, and the thickener is silica anhydrous, Any one selected from bentonite, the curing accelerator is a tertiary amine, selected from triethylamine, N, N-diethylcyclohexylamine, N, N, N ', N'-tetramethylethylenediamine and triethylenediamine Use one.

In addition, a slip agent is used in the composition of the surface layer of the present invention to further improve wear resistance. As the slip agent, silicone oil having a reactive ethylene group, non-reactive silicone oil, mineral oil, etc. may be used, and the amount thereof may be appropriately used if necessary. However, in order to control problems such as stain resistance, the entire acrylic resin composition is generally used. It is preferable to use 0.1 to 2 parts by weight.

The second liquid curing agent may be a radical initiator such as benzoyl peroxide, hydrogen peroxide, or a photopolymerization initiator such as acetone phenone as a curing agent containing an organic peroxide. It is used after diluting in solvents, such as toluene, chloroform, ether, and ketones. Preferably, it is used in the range of 1 to 6 parts by weight based on 100 parts by weight of the first liquid, as a component of the curing agent.

The formwork 10 for forming the braille display material layer in the present invention will be described. The form of the form is provided with a plurality of through-holes (frames for forming a braille display layer) 11 having a tapered wall surface 13 extending from top to bottom, and the material thereof is not particularly limited, but the foamed polyethylene and the foamed polypropylene It is preferable to use any one selected from foamed styrol, and the through holes are for forming protrusions (braille display layer) on the surface layer of the braille block and are arranged in a predetermined pattern. Moreover, an adhesive layer is formed in one surface, and the release paper is adhere | attached on it. Therefore, it is preferable to use a peelable paper which can be easily peeled off and attached to the surface layer simply on the road surface.

Next, the braille display material layer 7 is comprised from a two-component acrylic composition. The two-component acrylic composition is composed of a first liquid in which an additive is added to any one selected from acrylic resin and a second liquid which is a curing agent, similarly to the surface layer. Here, the braille display material layer is a block representing the braille, which may be represented in various shapes according to the shape of the through-hole of the formwork, and gives meaning to each shape.

The first liquid is used 1 to 4 parts by weight of the coloring pigment, 65 to 75 parts by weight of the filler, 0.1 to 0.3 parts by weight of the curing accelerator, 0.1 to 2 parts by weight of the slip agent, without using a thickener Except that, the type of resin composition and other additives are used in the same manner as the surface layer.

The acrylic resin is 4 to 20% by weight of an acrylic oligomer having a molecular weight of 1000 to 35000, 6 to 30% by weight of a polymer having a molecular weight of 35000 to 300000, 5 to 10% by weight of a 3 to 6 functional acrylic monomer, and 85 to 40% by weight of an acrylic monomer. It is preferable to use.

The acrylic oligomer may be any one selected from methyl methacrylate, ethyl acrylate, methyl acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, unsaturated polyester resin, and the like. More preferred. Urethane acrylate is characterized by providing a coating film that is hardly cured by an initiator and has excellent mechanical properties, heat resistance, fouling resistance, abrasion resistance, and excellent elasticity and toughness.

The 3- to 6-functional acrylic monomers are heat resistance, weather resistance, chemical resistance, abrasion resistance, such as trimethylolpropane triacrylate, trimethylolpropaneethoxytriacrylate, pentaerythritol tri, tetra, penta and hexa (meth) acrylate This is good, and the thing which has high crosslinking density and high glossiness is used. As the functional group of the monomer increases, a film with a fast curing speed and excellent heat resistance is formed. As a dense network structure is obtained, the crosslinking density is increased to increase wear resistance and mechanical strength. However, if the functional group is too high, the viscosity rises and becomes brittle, so it should be used properly. The polyfunctional acrylate monomers have good viscosity lowering and flexibility when used, but fouling resistance deteriorates, so it is preferable to use the polyfunctional acrylate monomer within 10% by weight.

The acrylic monomer may be selected from methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethyl hexyl acrylate, 2-hydroxy ethyl methacrylate, and the like.

In addition, the coloring pigment, filler, and hardening accelerator use the same thing as what is used by the composition of a surface material layer.

In addition, in the composition of the braille display material layer of the present invention, a slip agent is used to further improve wear resistance. As the slip agent, silicone oil having a reactive ethylene group, non-reactive silicone oil, mineral oil, or the like may be used, and the amount thereof may be appropriately used if necessary, but in order to control problems such as contamination resistance, it is usually 0.1 to the entire acrylic resin composition. It is preferable to use 2 parts by weight.

The second liquid curing agent may be a radical initiator such as benzoyl peroxide, hydrogen peroxide, or a photopolymerization initiator such as acetone phenone as a curing agent containing an organic peroxide. It is used after diluting in solvents, such as toluene, chloroform, ether, and ketones. Preferably, it is used in the range of 1-6 weight part with respect to 100 weight part of said 1st liquids as a component of a hardening | curing agent itself.

In the present invention, after the surface layer and the braille display agent are completed, it is also possible to apply the surface treatment agent layer 9 such as an overcoating material, a non-slip colored silica sand or a surface treatment material thereon. The surface treatment material may be applied before removing the formwork and applied only to the braille display layer, or may be evenly applied to the surface layer and the braille display layer after removing the formwork.

The overcoating material is applied to prevent the surface of the block from being contaminated. The overcoating material may be used by mixing a plasticizer with the first liquid composition used to prepare the top surface layer or the braille display material layer. As the plasticizer, mineral oils such as vegetable oils such as soybean oil, vegetable oil-modified alkyd resins, epoxidized oils, liquid synthetic rubber oils, naphthalenes, paraffins, and olefins may be used, and 0.1 to 10% by weight is used.

The non-slip colored silica sand or glass beads are poured into the through-holes of the formwork, and then sprinkled onto the form before being cured, and when cured, the remaining ones are not attached before the formwork is removed.

The surface treatment material may be cured with a high pressure mercury lamp by applying a surface treatment material mixed with silica or wax-coated silica with reactive silicone or non-reactive silicone and matting agent.

Hereinafter, preferred embodiments of the present invention will be disclosed, and the present invention is not limited to the following examples.

Example 1

Apply primer layer

As the primer layer, a thinner containing 20 parts by weight of polymethyl methacrylate having a molecular weight of 20000 was applied by spray coating, and dried in air.

Production of surface layer

The surface layer is 15% by weight of a urethane acrylate oligomer having a molecular weight of 5000, 6% by weight of a urethane acrylate polymer having a molecular weight of 150000, 5% by weight of trimethylolpropane triacrylate as a trifunctional acrylate monomer, and methyl methacrylate /. 74 wt% of a mixture of 2-ethyl hexyl acrylate (40/60) was mixed. 2 parts by weight of sulfur lead, 72 parts by weight of calcium carbonate powder, 1 part by weight of bentonite, 0.2 parts by weight of triethylamine, and 0.7 parts by weight of silicone oil were added as a slip agent. Toluene solution containing 40% by weight of benzoyl peroxide was prepared. As for the whole superficial layer composition, 8 weight part of 2nd liquid compositions were mixed with respect to 100 weight part of 1st liquid compositions.

The prepared surface layer was applied on a glass substrate to have a thickness of 600 µm and the rates of curing at 10 ° C, 20 ° C, and 30 ° C were observed. The results are shown in Table 1.

Example 2

Production of Braille Display Layer

The braille display material layer is 15% by weight of a urethane acrylate oligomer having a molecular weight of 5000 as the first liquid, 6% by weight of a urethane acrylate polymer having a molecular weight of 150000, 7% by weight of trimethylolpropane triacrylate as a trifunctional acrylate monomer, and methyl methacrylate. 74 wt% of a mixture of / 2-ethyl hexyl acrylate (40/60) was mixed. And it was prepared by adding 2 parts by weight of sulfur lead, 70 parts by weight of calcium carbonate powder, 0.2 parts by weight of triethylamine and 0.8 parts by weight of silicone oil with respect to 100 parts by weight of the mixed resin.

As a second liquid, a toluene solution containing 40% by weight of benzoyl peroxide was prepared. The total surface layer composition was applied by mixing 8 parts by weight of the second liquid composition with respect to 100 parts by weight of the first liquid composition.

After attaching the formwork on the glass substrate, the prepared braille display layer was filled to 5mm and the curing rate by contact was observed at 10 ° C, 20 ° C and 30 ° C.

The results according to the examples of the present invention are shown in Table 1 below.

TABLE 1

The composition according to the above embodiment provided a braille block having a high curing time and excellent strength and impact resistance after curing.

In addition, as a result of abrasion of the surface by using the metal wool to evaluate the wear resistance according to the above embodiment, all of the surface scratches did not occur. However, 86% by weight of the mixture of methyl methacrylate / 2-ethylhexyl acrylate (40/60) without using any trifunctional acrylate monomer trimethylolpropane triacrylate among the components of the braille display layer in the above embodiment. In the case of using the surface abrasion test using the metal wool it can be seen that a relatively large number of scratches occur than using the composition of the present invention, it can be seen that the effect by the composition of the present invention is very excellent and also the curing rate is very It was early.

The braille block of the present invention can be installed on the road surface without the process of digging the road by digging, using a synthetic resin can provide a braille block excellent in durability, wear resistance, pollution resistance, hardening, low cost.

Claims (11)

The surface layer composition and the braille display layer composition are sequentially applied to the road surface and cured. 4 to 20% by weight of urethane acrylate oligomer with molecular weight of 1000 to 35000, 6 to 30% by weight of urethane acrylate polymer with molecular weight of 35000 to 300000, 5 to 10% by weight of 3 to 6 functional acrylate monomer and 85 to 40% by weight of acrylic monomer 1 to 3 parts by weight of pigment, 70 to 73 parts by weight of filler, 0.5 to 3 parts by weight of thickener, 0.1 to 0.3 parts by weight of curing accelerator, and 0.1 to 2 parts by weight of slip agent based on 100 parts by weight of the urethane acrylate resin mixture. Surface layer 5 which mixed, apply | coated and hardened the 1st liquid which used the part, and the 2nd liquid which is a hardening | curing agent; And 4 to 20% by weight of urethane acrylate oligomer with molecular weight of 1000 to 35000, 6 to 30% by weight of urethane acrylate polymer with molecular weight of 35000 to 300000, 5 to 10% by weight of 3 to 6 functional acrylate monomer and 85 to 40% by weight of acrylic monomer 1 to 4 parts by weight of colored pigment, 65 to 75 parts by weight of filler, 0.1 to 0.3 parts by weight of curing accelerator, 0.1 to 2 parts by weight of slip agent, and curing agent based on 100 parts by weight of the urethane acrylate resin mixture Braille block having a braille display material layer (7) formed by mixing, filling and curing the phosphorus second liquid. The method of claim 1, Between the surface layer 5 and the road surface 1, the primer layer 3 using any one selected from polyacrylate, polymethacrylate, epoxy resin, polyester, polyvinyl alcohol, ethylene vinyl acetate, and polyurethane Braille block. The method of claim 1, A braille block having a surface treating agent layer (9) such as an overcoating material, an anti-slip colored silica sand or a surface treatment material on the surface of the braille block. The method according to any one of claims 1 to 3, As the 3 to 6 functional acrylic monomers, any one selected from trimethylolpropane triacrylate, trimethylolpropaneethoxytriacrylate, pentaerythritol tri, tetra, penta and hexa (meth) acrylate, The acrylic monomer is a two-component acrylic composition, characterized in that any one selected from methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethyl hexyl acrylate, 2-hydroxy ethyl methacrylate, etc. Braille blocks used. The method according to any one of claims 1 to 3, The colored pigment is yellow when yellow, titanium is used when white, and the filler is any one selected from calcium carbonate powder, silica powder, talc, and the thickener is any one selected from anhydrous silica and bentonite, and a curing accelerator. Is a tertiary amine, using any one selected from triethylamine, N, N-diethylcyclohexylamine, N, N, N ', N'-tetramethylethylenediamine and triethylenediamine, The slip agent is a braille block using a two-component acrylic composition, characterized in that any one selected from silicone oil having a reactive ethylene group, non-reactive silicone oil, mineral oil. The method according to any one of claims 1 to 3, A braze block using a two-component acrylic composition, wherein the second liquid is a curing agent containing an organic peroxide, using a radical initiator such as benzoyl peroxide, hydrogen peroxide, or a photopolymerization initiator such as acetone phenone. The method according to any one of claims 1 to 3, The curing agent is diluted in a solvent selected from toluene, chloroform, ether, ketones, and the like, and is used in an amount of 1 to 6 parts by weight as a component of the curing agent per 100 parts by weight of the first liquid. Braille block using. delete delete delete delete

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