KR101368451B1 - Fence and manufacturing method thereof - Google Patents

Abstract

A fence material of the present invention has a film of paint, which has durability and corrosion resistance, formed thereon by coating and hardening a coating material containing a pigment therein, wherein the pigment is prepared by mixing 10-40 wt% of pigment powder for paint, 40-77 wt% of at least one thermo-hardening polymer resin between a urethane modified polymer resin or an epoxy modified polymer resin, 10-30 wt% of a dilution solvent, and 2-6 wt% of an additive composed of at least one among a leveling agent, a pigment dispersant and a pigment antiprecipitating agent. The present invention provides a fence material used for a guard rail, a fence, a mesh, a falling-stone prevention fence and a crash barrier, which is capable of performing its function properly even when the fence material is exposed to poor outdoor conditions for a long period of time and affected by impact and bending force; of providing a beautiful design; and of expressing beautiful colors.

Description

Fence material and its manufacturing method {FENCE AND MANUFACTURING METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fence materials, and more particularly, to fence materials having good durability and corrosion resistance even after long-term exposure to the external environment, and a method of manufacturing the same.

Fence materials mainly installed outdoors have various types according to the use such as vehicle protection fences, open fences, wildlife guide fences, median and roadside guardrails, rockfall prevention fences, mesh fences and design fences with free curves. have.

These fence materials are used for their purposes, and most of them are painted to prevent rust and maintain durability.

Since most of the fence material is installed in the outdoor site, a coating treatment with corrosion resistance and durability is preferable, and a coating film mainly using powder coating is formed.

Powder coating is a method of spraying powder-type paints scattered with powder-only guns using static electricity, sprinkling them on an iron plate, then applying heat to melt the powder, and then hardening them. Cool and finish the painting. The advantage of this powder coating is that it has excellent corrosion resistance, waterproof function for outdoor use, and relatively low price.

Although there is liquid coating by coating method other than powder coating, liquid coating has the advantage of being able to paint neatly every corner by spraying liquid paint mixed with air, but it is generally weak compared to powder coating, so the surface is scratched. There is a risk that the blade is more expensive than the powder coating price.

Powder coatings, which are frequently used for the coating of fence solvents, have a high risk of getting foreign substances (dust, powder of different colors) and contain volatile organic compounds (VOC), which are regulated these days. In particular, in the case of coating the fence material of the mesh form, the disadvantage is that it is inefficient due to the large consumption of the coating material discarded during the application process.

In addition, the paint formed on the fence material through liquid coating or powder coating gives a beautiful color and protects the object.However, since it is not sufficiently durable or corrosion-resistant, it can be applied to external surfaces such as guard rails, fences, meshes, falling rocks, protective fences, etc. There is a demand for the development of fence materials that can be exposed to harsh environments for a long time and can withstand impact or bending.

Domestic Utility Publication 20-2010-0001645 "Wildlife Protection Fence"

Accordingly, an object of the present invention is to provide a fence material and a method of manufacturing the same having a coating film excellent durability and corrosion resistance compared to the conventional powder coating coating film.

Another object of the present invention is to provide a fence material and a method of manufacturing the same having excellent corrosion resistance and durability as well as inexpensive and environmentally friendly coating.

The present invention according to the above object is, 10 to 40% by weight of pigment powder for coating, 40 to 77% by weight of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10 to 30% by weight of diluent solvent, leveling agent and Characterized in that the coating material formed by mixing 2-6% by weight of an additive composed of at least one of a pigment dispersant and a pigment sedimentation agent is applied to the fence material and heat-cured to form a durable and corrosion-resistant coating film on the fence material. It is a fence material.

The fence material includes a vehicle-protective fence, open fence, wildlife guide fence, a median and roadside guardrail, rockfall prevention fence, mesh fence, design fence with a free curve and the like.

In addition, the fence material manufacturing method of the present invention, 10 to 40% by weight of pigment powder for paint, 40 to 77% by weight of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10 to 30% by weight diluent solvent, leveling agent And a pigment containing 2 to 6% by weight of an additive composed of at least one of a pigment dispersant and a pigment sedimentation preventive agent to obtain a pigment-containing coating, the pigment-containing coating is applied to the fence material by dipping method and heat-cured by hot air drying for durability and corrosion resistance Characterized in that the coating is formed on the fence material.

In another aspect of the manufacturing method of the fence material of the present invention, 10 to 40% by weight of the pigment powder for paint, 40 to 77% by weight of at least one thermosetting polymer resin of the urethane-modified or epoxy-modified polymer resin, 10-30 weight of the diluent solvent %, 2-6% by weight of an additive consisting of at least one of a leveling agent, a pigment dispersant, and a pigment antisettling agent to obtain a pigment-containing coating material, and the mesh-type fence material is added to the immersion tank containing the pigment-containing coating agent and applied. When pulling out from the immersion tank, the mesh is pulled out slowly in a state of standing in a lozenge, and then heat-cured by hot air drying in a drying furnace so that a durable and corrosion-resistant coating film is formed on the mesh-type fence material.

In the method of manufacturing the fence material, the speed per minute when the fence material is removed after immersion is 40 ~ 10cm and the internal temperature during heat drying the fence material is characterized in that 150 ~ 180 ℃.

The present invention is not only protects the object with a beautiful color in color, but also is inexpensive, and has excellent durability, such as adhesion, peelability, and elasticity, and corrosion resistance such as salt water resistance, acid resistance, and alkali resistance, compared to conventional outdoor paints. By constructing a fence material coated with a pigment-containing coating agent, the fence material of the present invention, such as a guard rail, fence, mesh, rockfall protection fence, fence, etc., is exposed to a poor external environment for a long time and is fully functional even when there is an impact or warping action. In addition to being able to do so, it has the advantage of being able to combine beautiful design and color expression.

1 is a schematic manufacturing procedure of the fence material according to an embodiment of the present invention,
Figure 2 is a fragmentary photograph of a mesh-like fence of one example of the fence material showing a bad state,
Figure 3 is a photograph of the normal quality mesh fence material fragments.

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

The present invention obtains a pigment-containing coating so as to protect the object to form a film for a long time while using a paint that can give a beautiful color and to form a coating film with the pigment coating to implement the fence material.

The fence material of the present invention forms a coating film with a pigment-containing coating much superior to the paint used for powder coating in terms of durability such as adhesion, peelability and elasticity on the surface, as well as corrosion resistance such as salt water resistance, acid resistance and alkali resistance. It is.

The pigment-containing coating agent applied to the embodiment of the present invention includes a pigment powder for coating, a thermosetting polymer resin of at least one of a urethane modified or epoxy modified polymer resin, a diluent solvent, and additives such as leveling agents, pigment dispersants, and pigment settling inhibitors. As a composition included together, the components may be mixed through stirring in a stirrer to obtain a pigment-containing coating for use in the present invention.

The pigment-containing coating agent applied in the present invention is a thermosetting coating agent. Therefore, the fence member is protected to have full durability and corrosion resistance only after application to a fence member such as a fence or fence part and curing with heat.

The components constituting the pigment-containing coating agent of the present invention, which is made to have good durability and corrosion resistance, and composition ratios thereof are the results obtained by the present inventors through a number of experiments and have the following ranges.

That is, the pigment-containing coating agent applied to the present invention, 10 to 40% by weight of the pigment powder for coating, 40 to 77% by weight of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10 to 30% by weight diluent solvent, leveling agent And 2 to 6% by weight of an additive composed of at least one of a pigment dispersant and a pigment precipitation inhibitor. Here, More preferably, the said additive is comprised from 1-2 weight% of leveling agents, 0.5-2 weight% of pigment dispersants, and 1-2 weight% of pigmentation inhibitors.

Among the constituents of the pigment-containing coating agent, the pigment powder for the paint is a paint component which allows the coating to be formed with good color of various colors on an object. When the composition ratio is in the range of 10 to 40% by weight and less than 10% by weight, the paint color becomes thinner, If it is more than 40% by weight, the paint containing coating agent is dried and rubbed on the surface of the object in the dry state, causing the powder to come out.

Among the constituents of the pigment-containing coating agent, the urethane modifying agent or the polymer resin made of the epoxy-modified polymer resin is a mucilage-like thermosetting resin, and the pigment-containing coating agent is involved in the durability and corrosion resistance of the object at the time of film formation.

In the present invention, the urethane-modified polymer resin or the epoxy-modified polymer resin is used alone, or the urethane-modified polymer resin and the epoxy-modified polymer resin are mixed at a ratio of 1: 1 by weight, .

The urethane-modified polymer resin is preferably used when elasticity is required to prevent the film from tearing when the object is bent. The epoxy-modified polymer resin is used when corrosion resistance such as salt resistance, acid resistance and alkali resistance is further required . It is safe to use a mixture of a urethane-modified polymer resin and an epoxy-modified polymer resin in the case of two coatings (elasticity and corrosion resistance) that are suitably simultaneously required.

Examples of the urethane-modified polymer resin used in the present invention include phenol-urethane resin, urethane resin, polyurethane resin, diurethanedimethacrylate, allyl Aliphatic urethane diacrylate, urethane acrylate, aliphatic urethane methacrylate, aliphatic urethane diacrylate, polyurethane diol, and the like. , And polyester urethane acrylate.

Examples of the epoxy-modified polymer resin used in the present invention include an epoxy resin, an epoxy methadiacrylate, a poly (bisphenol-epichlorohydrin) epoxy resin, A-co-epichlorohydrin based on epoxy resin, diglycidyl ether of bisphenol A-based epoxy resins, and epoxyacrylate oligomer.

When the proportion of the urethane modifier or the epoxy-modified polymer resin in the composition of the present pigment-containing coating agent is in the range of 40 to 77% by weight, if it is less than 40% by weight, durability of the coating film such as elasticity, Corrosion resistance of coating films such as water resistance, salt resistance, acid resistance and alkali resistance is poor. When the content exceeds 77% by weight, the coating is uneven due to resin aggregation during the formation of the coating film, so that the formation of the crustal crater on the surface of the coating film is critical .

In addition, the diluting solvent among the constituents of the pigment-containing coating agent of the present invention is a solvent which dilutes the mucopolymer resin and mixes it properly with the pigment powder for the coating material. If the composition is not 10% by weight in the composition ratio of 10 to 30% by weight, , The viscosity of the pigment-containing coating agent is decreased. When the content of the pigment-containing coating agent is more than 30% by weight, the viscosity of the pigment-containing coating agent is decreased and the formed coating film is thinned when applied to an object, resulting in weakening of durability and corrosion resistance, do.

As the other additive constituting the pigment-containing coating agent of the present invention, the leveling agent is included in the 1-2% by weight to improve the flowability of the pigment-containing coating agent to make the coating film even and smooth, the pigment dispersant is the pigment of the pigment in the pigment-containing coating agent 0.5 to 2% by weight is included for even dispersion, the pigment anti-settling agent is to include 1 to 2% by weight to prevent the sedimentation of the pigment in the pigment-containing coating over time.

Since the pigment-containing coating agent of the present invention does not use a volatile organic compound (VOC), it is an environmentally friendly paint because it is not toxic.

In the present invention, by forming a coating film on the surface of the fence material using a pigment-containing coating agent of the above components and constituent ratio to prepare a fence material excellent in durability and corrosion resistance.

The fence material of the present invention includes a vehicle protection fence, open fence, wildlife guide fence, guard fence for the median and roadside, rockfall prevention fence, mesh fence, design fence having a free curve, etc., not referred to as other fences It should be understood that equivalents do not apply as well.

Figure 1 is a schematic manufacturing procedure of the fence material according to an embodiment of the present invention, through the dipping process and drying process is formed a coating film excellent durability and corrosion resistance to the fence material.

When the fence material to be formed according to the present invention is a metal, the oil may remain on the surface, it is preferable to go through the pre-treatment process after pickling and drying, if the rust preventive treatment may go directly into the dipping process.

In the example of Figure 1 it should be understood that the coating film formation of the fence material of the present invention is somewhat difficult to illustrate as an example of a mesh-type fence material that enters a large amount of inefficient consumption of powder coating, and other fence materials in the spirit of the present invention. Modifications or variations may be made without departing.

Referring to FIG. 1, the fence material A1 to be immersed is placed in an immersion tank 10 filled with the liquid pigment-containing coating agent 12 described above. In order to prevent immersion or even dispersion (pigmentation) of pigments among the components of the pigment-containing coating agent 12, a liquid circulation means 14 using a waterproof motor fan or a pump is provided in water such as the bottom of the immersion tank 10. It works.

When the fence material (A1) is a mesh type, it does not matter much when put into the immersion tank (10), but when it is pulled out of the immersion tank (10), as shown in the fence material (A2) after immersion, the fence is set up so that the mesh becomes a lozenge shape Pull out the material A2. This is to minimize the flow marks that can occur on the coating surface while the liquid coated on the fence material (A2) as the immersion rides down from the top. That is, if the mesh of fence material (A2) is raised in the shape of a square or square, the coating liquid forms on the wire rod between the intersections of the mesh and falls down. If the liquid solidifies, the dew drops on the line part. It can be a defective product with a bulging belly. However, when the mesh of the fence material (A2) after immersion is set to be a rhombic shape to lift the fence material (A2), the coating is more easily ride down the line and the point where the coating liquid is formed is the intersection point of the mesh, thereby minimizing the defective rate.

The fence material (A1) should be pulled out at a slow speed of 40 ~ 100cm per minute when pulled up after being put in the immersion tank 10 to be sufficiently immersed. This is to give enough time for the coating liquid, which is excessively buried in the fence material (A2), which has risen above the water surface, to flow directly into the immersion tank 10 as much as possible, and also needs to be adjusted for the time required for the subsequent drying process. to be.

The fence material (A2) immersed and coated using the immersion tank (10) as described above is uniformly applied to the entire coating film and at the same time has a suitable thickness suitable for forming the durability and corrosion resistance of the fence material, and then the drying furnace 20 The product is finally finished by heat curing.

The drying furnace 20 has an internal temperature of 150 to 180 ° C. as a hot air dryer. The drying furnace 20 is formed in a tunnel-type drying furnace when continuous mass production of the product is required, and a conveying conveyor 22 to be transported at a low speed by walking the fence material A3 to be dried is preferably installed at the upper portion. In the case of producing a small amount of the product, the drying furnace 20 may be hot air dried in a stationary state without the need for the transfer conveyor 22.

The residence time for which the coated fence material (A3) is to stay in the drying furnace 20 is 5 to 8 minutes, and after the residence time has elapsed, the coated pigment-containing coating agent is completely thermally cured. When discharged, it is made of a fence material (A4) having a coating film excellent in durability and corrosion resistance.

The fence material (A4) of the present invention coated with a pigment-containing coating agent of the present invention and formed by heat curing is not only able to give a fine paint color in various colors, but also flame resistance as well as durability aspects such as adhesion, peelability, and elasticity. In terms of corrosion resistance, such as water resistance, acid resistance and alkali resistance, it is much superior to conventional powder coating fence materials.

 Figure 2 is a fragmentary photograph of a mesh-like fence of the fence material showing a defective state when the composition ratio of the pigment-containing coating agent is not formed as in the present invention or the coating process is not performed properly.

And Figure 3 is a photograph of the mesh-like fence material fragments of the normal quality according to the present invention is a product made by properly performing the process of the composition ratio of the pigment-containing coating agent is formed as in the present invention and the coating film.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

The present invention can be usefully used to manufacture fence materials, such as durability and corrosion resistance, environmentally friendly guard rail, fence, mesh, rockfall prevention fence, fence fence.

(A1) (A2) (A3) (A4)-fence material (10) --- immersion tank
(12)-Pigment-containing coatings (14)-Liquid circulation means
(20)-Drying Furnace (22)-Transfer Conveyor

Claims (5)

10-40 wt% of pigment powder for paint, 40-77 wt% of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10-30 wt% of diluent solvent, leveling agent, pigment dispersant and pigment settling inhibitor Fence material, characterized in that the durable and corrosion-resistant coating film is formed on the fence material by applying a pigment-containing coating agent is a mixture of 2 to 6% by weight of the additive composition consisting of a coating material and heat curing.
The method of claim 1, wherein the fence material includes a vehicle protection fence, open fence, wildlife guide fence, guard fence for the median and roadside, rockfall prevention fence, mesh fence, design fence having a free curve Fence material.
10-40 wt% of pigment powder for paint, 40-77 wt% of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10-30 wt% of diluent solvent, leveling agent, pigment dispersant and pigment settling inhibitor 2 to 6% by weight of an additive consisting of a pigment-containing coating to obtain a coating, the pigment-containing coating is applied to the fence material by immersion method and heat-cured by hot air drying to form a durable and corrosion-resistant coating film formed on the fence material Fence material manufacturing method.
10-40 wt% of pigment powder for paint, 40-77 wt% of thermosetting polymer resin of at least one of urethane modified or epoxy modified polymer resin, 10-30 wt% of diluent solvent, leveling agent, pigment dispersant and pigment settling inhibitor 2 to 6% by weight of the additives consisting of a pigment-containing coating to obtain a coating, the mesh-like fence material is applied to the immersion tank containing the pigment-containing coating is pulled out of the immersion tank, when pulled out of the gradual mesh pulled out slowly After raising, heat-curing the drying in a drying furnace to produce a fence material, characterized in that the durable and corrosion-resistant coating film is formed on the mesh-like fence material.
The method of manufacturing a fence material according to claim 3 or 4, wherein the minute per minute speed when the fence material is removed after dipping is 40 to 10 cm, and the internal temperature when the fence material is heat-dried is 150 to 180 ° C. .

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