KR101964361B1 - Manufacturing method of oriented polymer paint composition using wasted polyethylene terephthalate, and paint composition manufactured by the method - Google Patents

Abstract

The present invention relates to a method of manufacturing an oriented polymer paint using waste polyethylene terephthalate (PET) and the oriented polymer paint manufactured by the method. More specifically, the method of the present invention comprises the steps of: crushing waste PET into flake particles; cleaning the crushed flake particles; preparing the cleaned flake particles into sinuated fine particles; mixing a functional agent and a permeating agent with the prepared sinuated fine particles and making the sinuated fine particles react with the functional agent and the permeating agent at 30 to 150°C for 10 minutes to 24 hours to prepare functional sinuated fine particles; and mixing the prepared functional sinuated fine particles with a vehicle to manufacture a paint. According to the present invention, the method of manufacturing an oriented polymer paint using waste PET has an advantage of forming a high economic added value having a new concept called recycling of material and performance since the method can manufacture a paint having more excellent performance than a paint using a new PET raw material by horizontally moving the paint as it is without damaging an orientation structure of a PET container.

Description

TECHNICAL FIELD The present invention relates to a method of producing an oriented polymer coating material using waste polyethylene terephthalate, and an oriented polymer coating material produced by the method. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for producing an oriented polymer coating material using waste polyethylene terephthalate,

TECHNICAL FIELD The present invention relates to a method for producing an oriented polymer coating material using waste polyethylene terephthalate and an oriented polymer coating material produced by the method. More particularly, the present invention relates to a method for producing an oriented polymer coating material using waste polyethylene terephthalate (PET) To a method for producing an oriented polymer coating material using waste PET for producing a waxy fine particle having an orientation polymerization structure in which a functional group is formed and using the same to produce a coating material having excellent physical properties and a coating material by the method.

One of the materials popular in modern society is PET container. The PET container is widely used in a large amount for disposable coffee containers, beverage bottles, bottled water bottles, beer bottles, and the like. The reason for this is that the PET container is an orientation polymer produced by aligning PET molecules in one direction in a molten state, and has a property of strong and strong " ferrofural " In addition, the cost is low, the weight is light, and the appearance is transparent, beautiful, and non-toxic.

However, the PET container causes a lot of environmental problems, because once discarded it takes up a large volume and is very resistant to atmospheric and biological materials and decomposes very slowly. Therefore, the PET is currently classified as a pollutant.

In order to solve such ecological problems and economic problems, a method of recycling PET containers by various techniques and processes has been studied, but most of them have no economic advantage due to recycling.

As an example of the above recycling method, there is a method of producing a waste PET container from regenerated fiber. This method is a method of producing a waste PET container by heating and melting it to produce a fiber. In this method, excellent physical properties as an orientation polymer of a PET container are lost due to melting of waste PET. Therefore, Has been used as a regenerated fiber after further re-processing such as orientation-cooling-drawing.

Also, a method has been proposed in which the waste PET container is pulverized and used as it is as an additive for paints. However, when it is added to the coating material, there is a problem that the bonding force with the vehicle material (resin) is low and separation and breakage phenomenon occurs between the materials.

KR 10-0370702 B1 KR 10-1313351 B1

Accordingly, an object of the present invention is to provide a waste PET which has good physical properties as an orientation polymer and which can be used as a paint without any heating and melting process, in order to overcome all the problems of the conventional recycling method of waste PET, And to provide an oriented polymer coating material produced by the method.

It is still another object of the present invention to provide a method for producing an oriented polymer coating material using waste PET of high quality free from separation-breakage phenomenon between materials, To provide an oriented polymer coating material.

The method for producing an oriented polymer coating material using waste PET according to the present invention comprises the steps of: pulverizing waste PET into flake particles; washing the flake particles; pulverizing the washed flake particles into wave microparticles Mixing the functional surfactant with a penetrating agent, and reacting the resulting particulate surfactant with the penetrating agent at 30 to 150 ° C. for 10 minutes to 24 hours to produce functional wavy fine particles; and mixing the prepared wavy fine particles with the vehicle, Wherein the functional agent comprises at least one functional group selected from the group consisting of an aqueous isocyanate group functional group, an aqueous amine group functional group, an isocyanate group functional group, an amine group functional group, a hydroxy group functional group and a silane group functional group .

Wherein the step of pulverizing the waste polyethylene terephthalate with the flake particle comprises pulverizing the waste polyethylene terephthalate to a particle size of 10 to 20 mm and the step of washing the pulverized flake particle is a step of pulverizing the pulverized flake particle, (AOPs, Advanced Oxidation Process) of the wastewater generated during the first rinsing, and washing the first washed rinsed particles with water at a temperature of 70 to 95 캜 for a second time And washing the wastewater generated during the secondary cleaning with a washing water having a temperature of 80 to 100 ° C. The wastewater generated during the tertiary cleaning is subjected to secondary washing Wherein the step of preparing the washed flakes as wavy particulates comprises the steps of: subjecting the cleaned flakes to high-temperature oxidation, three-stage filtering and two-stage filtered wastewater as wash water, To the 1 ~ 3mm of the blade is put into a mill equipped with rotating, and by rotating a 2,000 ~ 100,000rpm characterized in that for producing a wave of fine particles having a particle size 1 ~ 600㎛.

The functional agent may be at least one selected from the group consisting of a water-soluble diisocyanate prepolymer, a water-soluble amine resin prepolymer, a diisocyanate prepolymer, an amine resin prepolymer, a polyether polyol, a polyester polyol, a polyether diol, At least one of a polyester diol, an acryl polyol, a polycarbonate diol, a silanol, a vinyl silane, an amino acid silane, an epoxy silane and a methacryloxy silane, The penetrating agent may be selected from the group consisting of cyclohexyl acetate, dipropylene glycol dimethyl, propylene glycol diacetate, dipropylene glycol-n-propyl ether methyl-n-propyl ether, di (propylene glycol) methyl ether acetate, methylene acetate, 1,4-butanediol diacetate, 1,3-butylene glycol diacetate, 1,6-hexanediol diacetate 1,6-hexanediol diacetate and TEXANOL, and 0.1 to 100 parts by weight of the functional agent and 0.1 to 10 parts by weight of the penetrating agent are mixed with 100 parts by weight of the prepared wavy fine particles.

Wherein the colorant is at least one selected from the group consisting of an aqueous vehicle, an oily vehicle, a photocurable resin that is cured at a UV intensity in the range of 60 mW / cm 2 to 2000 mW / cm 2, and a fused powder resin. The aqueous vehicle may be a polyacryl emulsion, At least one of an epoxy emulsion, a polyisocyanate emulsion, a polyamine resin emulsion, a polyurethane emulsion, a vinyl acetate emulsion, an SBR latex, an NBR latex and an NR latex, and the oily vehicle is at least one selected from the group consisting of polyurethane, polyacrylic, PMMA ), A polyester, a polyepoxy, a polyamine, a polymelamine, a polyisocyanate, a polysiloxane resin and a fluorine resin, wherein the photocurable resin is at least one selected from the group consisting of an acrylic photocurable liquid resin, a urethane acrylic photocurable liquid resin, Acrylic resin, photo-curable liquid resin, polyester acrylate photo-curable liquid phase And the side walled acrylate type acrylic photocurable liquid resin, wherein the fusible powder resin is at least one of an epoxy powder resin, a polyurethane powder resin, a polyester powder resin, a polyacrylic powder resin and a melamine powder resin , And 30 to 500 parts by weight of the vehicle is mixed with 100 parts by weight of the above-prepared functional particulate ultrafine particles.

The oriented polymer coating material using the waste polyethylene terephthalate according to the present invention is characterized in that it is produced through the above-mentioned method.

According to the method for producing an oriented polymer coating material using the waste PET according to the present invention and the oriented polymer coating material produced by the method, the orientation structure of the PET container can be horizontally moved as it is without being damaged, There is an advantage that an oriented polymer coating material having superior performance can be produced and a high economic added value having a new concept of material and performance recycling is formed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process for producing an oriented polymer coating material using waste PET according to the present invention. FIG.
2 is an electron micrograph of the pulverized PET wave microparticles according to the present invention.
3 is a schematic representation of a functional PET PET emitter according to the present invention.

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

The greatest feature of the method of producing an oriented polymer coating material using waste PET according to the present invention and the coating material by the method is that waste PET is reused as it is without heating and melting process to horizontally move the excellent physical properties as an orientation polymer have. Further, it is intended to provide a high-quality paint which does not cause segregation and breakage of materials by enhancing the bonding force between the waste PET particles and the vehicle material.

Firstly, the oriented polymer coating according to the present invention means that the waste PET which is an orientation polymer is not heated and melted, and is made of a paint containing the orientation structure of the waste PET as it is.

A method for producing an oriented polymer coating material using waste PET according to the present invention comprises the steps of: pulverizing waste PET into flake particles; washing the flake particles; washing the flakes with the wavy fine particles Mixing the functional surfactant with a penetrating agent, and reacting the resulting particulate surfactant with the penetrating agent at 30 to 150 ° C. for 10 minutes to 24 hours to produce functional wavy fine particles; and mixing the prepared wavy fine particles with the vehicle, Wherein the functional agent comprises at least one functional group selected from the group consisting of an aqueous isocyanate group functional group, an aqueous amine group functional group, an isocyanate group functional group, an amine group functional group, a hydroxy group functional group and a silane group functional group .

Hereinafter, the steps will be described in detail with reference to FIG. 1 attached hereto.

Waste PET Piece  Pulverizing into particles.

First, waste PET, that is, waste PET containers, is collected and crushed into flake-like particles. At this time, the size of the PET particles on the flakes may be about 10 to 20 mm, and the method of pulverizing the waste PET may be sufficient by a known method.

The pulverized Piece  Cleaning the particles.

Next, the crushed fleece particles are cleaned with water.

At this time, although the cleaning method is not limited, most preferably, an environmentally friendly cleaning method which does not discharge waste water is used.

More specifically, the ground particles are first washed with washing water at 50 to 90 ° C., the primary washed particles are subjected to secondary washing with washing water at 70 to 95 ° C., and the secondary washed The flaky particles are subjected to tertiary cleaning with washing water at 80 to 100 DEG C to produce flake-like particles having no foreign substance. The wastewater used in the primary cleaning is subjected to advanced oxidation treatment (AOPs) Stage wastewater is subjected to three-stage filtering, and the wastewater used in the third wastewater is subjected to two-stage filtering to eliminate waste water discharge by reusing the advanced oxidation treatment, three-stage filtering and two-stage filtered wastewater as washing water.

Here, the method of performing the high-level oxidation treatment of the wastewater is a technique of generating an OH radical having strong oxidizing power in the reactor and decomposing the organic compound contained in the wastewater into a harmless compound such as CO ₂ , H ₂ O or HCl Since it has been sufficiently well known in the field of wastewater treatment, a detailed description thereof is omitted, and oxidation treatment by a known method is sufficient. According to the present invention, when the wastewater generated after the first rinsing is highly oxidized, only about 5 ppm of solid waste is discharged.

The three-stage filtering of the wastewater is performed by primary filtering with an eye size filter of about 40 to 60 μm, secondary filtering with an eye size filter of about 4 to 6 μm, And a third-order filtering with an eye size filter.

The two-stage filtering of the wastewater is a first filtering with an eye size filter of about 4 to 6 mu m, followed by a second filtering with an eye size filter of about 0.5 to 1.5 mu m.

That is, if the flaky particles are cleaned by such a method, the washing water can be repeatedly reused, but no wastewater is generated at all, which is environment-friendly.

remind Washed Piece  A step of producing the particles as wavy fine particles.

When the cleaning is completed, the washed flakes are dried at a temperature of 30 to 180 ° C to prepare a wavy fine particle.

As used herein, the term " fracture fine particles " refers to a fine particle state in which a wavy pattern is formed on the surface of a particle, as shown in Fig. 2. The wavy fine particles are tangled with a vehicle for a paint when used as a paint, And enhances physical properties such as fracture resistance. That is, the reason why the particulate particulate is made of the particulate particulate material is that the waste PET, which is an orientation polymer, has a strong chemical resistance, so that when the particulate particulate material is simplely mixed, the binding force with the vehicle and the crosslinking agent is low, There was a phenomenon to compensate for this phenomenon.

A specific method for producing the particulate particulate material is such that the cleaned particulate material is put into a rotary mill equipped with a blade having a thickness of 1 to 3 mm and rotated at 2,000 to 100,000 rpm to perform fracture crushing, To produce wavy fine particles having a particle diameter of 1 to 600 mu m. That is, through the above-described process, the blade having a thickness of 1 to 3 mm is hit repeatedly on the surface of the flaky particles. However, since the blades are thick, the flaky particles can not be cut easily, (Fracture) is formed, and finally, the crushed particles are pulverized by crushing force through a high rotational force.

To the produced wavy fine particles Functional agent Penetrator  Mixing and reacting at 30 to 150 ° C for 10 minutes to 24 hours to produce functional wavy fine particles.

The functional fine particles are prepared by mixing the functional fine particles with the functional agent and the penetrating agent and reacting the resultant at 30 to 150 ° C for 10 minutes to 24 hours.

Here, the functional agent is one which imparts functionality to the particulate wax and contains at least one functional group selected from an aqueous isocyanate group functional group, an aqueous amine group functional group, an isocyanate group functional group, an amine group functional group, a hydroxy group functional group and a silane group functional group It is enough.

More specifically, a water-soluble diisocyanate prepolymer can be used as the functional agent having an aqueous isocyanate group functional group, and as the functional agent having an aqueous amine group functional group, a water-soluble amine resin prepolymer can be used. In this case, the water-soluble diisocyanate prepolymer may suitably have a solid content of 5 to 80% and an NCO content of 3.5 to 35, and the water-soluble amine resin prepolymer satisfies TAV (Total Amine Value (0.1 N-HCl Method) 350, but this is not necessarily a limitation.

As the functional group having an isocyanate group functional group, a diisocyanate prepolymer may be used. As the functional group having an amine group functional group, an amine resin prepolymer may be used. At this time, the diisocyanate prepolymer may have a solids content of 10 to 100% and an NCO content of 3.5 to 55, and the amine resin prepolymer may have a total amine value (TNA) (0.1 N-HCl Method) This is not necessarily the case.

Examples of the functional group having a hydroxy group functional group include a polyether polyol, a polyester polyol, a polyether diol and a polyester diol having a hydroxyl value of 110 to 830 (mg KOH / g) Polyester diol, acrylic polyol, and polycarbonate diol may be used.

As the functional agent having a silane group functional group, at least one of silanol, vinyl silane, amino acid silane, epoxy silane and methacryloxy silane can be used. As the vinyl silane, Vinyltrimethoxysilane or Vinyltriethoxysilane, N- (2-aminoethyl) 3-aminopropylmethyldimethoxysilane, N- (2-aminoethyl) 3-aminopropyltrimethoxysilane or N- 3-Methacryloxypropylmethyldiethoxysilane, 3-Methacryloxypropylmethyldiethoxysilane, 3-Methacryloxypropylmethyldiethoxysilane, and 3-Methacryloxypropylmethyldiethoxysilane may be used as the methacryloylglycidylsilane, 3-methacryloxypropylmethyldiethoxy or 3-methacryloxypropyltrimethoxysilane.

The penetrating agent serves to soften the surface of the solid wavy particulate together with the heating to help the functional group penetrate smoothly into the wavy fine particle and to bind the solid wavy particulate. The wetting agent may be selected from the group consisting of cyclohexyl acetate, dipropylene glycol dimethyl Dipropylene glycol dimethylacetate, propylene glycol diacetate, dipropylene glycol methyl-n-propyl ether, di (propylene glycol) methyl ether acetate Propylene glycol methylether acetate, 1,4-butanediol diacetate, 1,3-butylene glycol diacetate, 1,6-hexanediol diacetate, (1,6-hexanediol diacetate) and TEXANOL (preferably TEXANOL).

That is, when the functional agent and the penetrating agent are mixed in the wavy fine particles at this stage and then reacted at 30 to 150 ° C for 10 minutes to 24 hours, the wavy fine particles are softened by the penetrating agent, and the functional agent easily penetrates the wavy fine particle surface , A functional group is formed on the surface of the particulate soap as shown in Fig. At this time, it is preferable that 0.1 to 100 parts by weight of the functional agent and 0.1 to 10 parts by weight of the penetrating agent are mixed with 100 parts by weight of the prepared wavy fine particles.

Functional groups formed through this process can react with most resins such as acrylic, urethane, epoxy, polyester, polycarbonate, etc. to form 2 to 3 copolymers. As the functional agent, a monomer may be used. In the monomer state, however, since the monomer is in a high toxicity, unstable handling, and expensive equipment, the functional material, such as polyol, diol, prepolymer, oligomer, polymer, emulsion, silane And the like.

The above- Sensual  And a step of preparing a coating material by mixing the corrugating agent into the wavy fine particles.

Then, the functional fine particulate material prepared above is mixed with a vehicle colorant to prepare a coating material. At this time, the amount of the vehicle-use vehicle is 30 to 500 parts by weight of the vehicle-form vehicle as 100 parts by weight of the functional fine particulate. Hereinafter, the " weight part " in this step is based on 100 parts by weight of the functional fine particulate.

In the present invention, it is possible to produce water-based paints, oil-based paints, photo-curable paints and powder paints depending on the type of the functional group of the functional fine particulate and the kind of the vehicle.

First, in order to prepare an aqueous coating material, the functional particulate material having an aqueous functional group is selected and an aqueous vehicle having a solid content of 20 to 80% is mixed. Examples of the aqueous vehicle include polyacryl emulsion, polyester emulsion, epoxy emulsion (EEW (g / eq) 190-550) and polyisocyanate emulsion (NCO 3.5-35%). It is preferable to select one or more of polyamine resin emulsion (TAV (mgKOH / g) 57 to 350), polyurethane emulsion, vinyl acetate emulsion, SBR latex, NBR latex and NR latex. If necessary, 0.01 to 300 parts by weight of at least one inorganic powder of titanium oxide, calcium carbonate, talc and silica and 0.01 to 20 parts by weight of a coloring matter are added. 1 to 5 parts by weight of a dispersant as a paint additive, 0.5 to 5% 0.1 to 5 parts by weight of an antimicrobial agent, 1 to 5 parts by weight of an anti-settling agent, and the like, followed by stirring to prepare an aqueous coating. In addition, it is of course possible to further add other components commonly used as a paint additive.

In order to produce the oil-based coating material, it is preferable that the particulate wax having at least one functional group other than the aqueous functional group is previously selected and polyurethane, polyacrylic, PMMA (polymethylmethacrylate) is used as the oily vehicle having a solid content of 20 to 100% , Polyesters, polyepoxies, polyamines, polymelamines, polyisocyanates, polysiloxane resins, and fluororesins are selected and mixed. If necessary, 0.01 to 300 parts by weight of at least one inorganic powder of titanium oxide, calcium carbonate, talc and silica and 0.01 to 10 parts by weight of a coloring matter are added, and 0.5 to 5% by weight of a defoaming agent, 0.1 to 5% And the like can be further added, and the mixture can be stirred to prepare a solvent-based coating material.

In order to prepare a UV photocurable coating material, wavy fine particles having at least one functional group other than an aqueous functional group are selected and cured at a UV intensity of 60 mW / cm 2 to 2000 mW / cm 2 as a vehicle as a vehicle, % Acrylic resins, more specifically acrylic photocurable liquid resins, urethane acrylic photocurable liquid resins, epoxy acrylic photocurable liquid resins, polyester acrylic photocurable liquid resins, polyether acrylic photocurable liquid resins and side chain acroyl acrylic spectra At least one of the liquid-phase resins may be selected and mixed to prepare a UV-curable paint.

 In addition, in order to prepare the powder coating material, the wavy fine particles having at least one functional group other than the aqueous functional group are selected and dried to obtain a water content of 100 ppm or less, and then a fusion-type powder vehicle, A powder coating material can be prepared by mixing and mixing at least one of a powdery epoxy resin powder, a polyurethane powder resin, a polyester powder resin, a polyacrylic powder resin and a melamine powder resin. At this time, the fusible powdered vehicle has an average particle size of 50 ± 30 μm (ASTM D 192), a moisture content (MOISTURE CONTENT) of <0.5% (CAN / CSA Z 245.2) and a non-volatile content of 99.5% Z 245.2), but is not limited thereto.

As described above, the coating material prepared through the above-described method has excellent physical properties as an orientation polymer, has excellent bonding force with a vehicle, and has no merit of separation and breakage of materials. In addition, there is an advantage that waste resources can be efficiently recycled.

Hereinafter, the present invention will be described in more detail by way of examples.

(Example 1)

100 kg of transparent PET containers were crushed into flake-shaped particles having an average size of 13.5 mm. Subsequently, the flakes were placed in a 500-liter washing tank, 300 kg of hot water at 80 ° C was removed by one-step washing, and the mixture was stirred for 30 minutes with a rotary stirring blade for cleaning. The resulting wastewater was purified by Advanced Oxidation Process (AOPs) And stored in a purified water tank. Subsequently, 300 kg of hot water at 90 ° C was poured in two-step washing, and the resultant was stirred with a rotary stirring blade for 30 minutes and washed. The resulting wastewater was purified by a three-stage filter and stored in a purified water tank for reuse. At this time, the eye size of the one-stage filter was 50 mu m, the eye size of the two-stage filter was 5 mu m, and the eye size of the three-stage filter was 1 mu m. Subsequently, 300 kg of hot water at 90 캜 was poured into the three-step washing, and the mixture was washed with a rotary stirring blade for 30 minutes with stirring. The resulting wastewater was purified by a two-stage filter and stored in a purified water tank for reuse. At this time, the eye size of the first filter was 5 mu m and the eye size of the second filter was 1 mu m.

Then, it was dried at a temperature of 60 to 120 ° C for 2 hours to prepare 91.5 kg of washed flake particles.

Subsequently, the dried washed flake particles were put into a rotary mill having a blade thickness of 1.5 mm and a rotation speed of 15,000 rpm, followed by wave crushing to produce wave-like fine particles having an average particle size of 75 탆. FIG. 2 attached is an optical microscope photograph of the produced wavy fine particles.

Next, 0.7 kg of a water-soluble diisocyanate prepolymer (solid content: 43.5%, NCO% 5.5) was added to 10 kg of the particulate wax, 0.05 kg of TEXANOL (C ₁₂ H ₂₄ O ₃ ) was added as a penetrating agent, , And reacted at 90 DEG C for 3 hours to prepare aqueous NCO group functional wavy fine particles.

Subsequently, 10 kg of a polyacryl emulsion (solid content 45%) was added to 10 kg of the NCO group functional surfactant fine particles, followed by adding 5 kg of water (viscosity increased by adding 2% by weight of HEC (Hydroxyethy cellulose) as a solvent) 0.055 kg of titanium, 0.05 kg of silica and 0.3 kg of green pigment. 0.1 kg of a polycarboxylic acid sodium salt-based dispersing agent (trade name: SN-DISPERSANT 44S, manufactured by KANPAN KOKO Co., Ltd.), 0.1 kg of a silica silicone antifoam agent (manufacturer name: NOPCO 8034L, (Trade name: Active Minerals, product name: S22) was added and stirred to prepare a water-based paint.

(Example 2)

10 kg of a polyurethane emulsion (solid content 45%) was added to 10 kg of the NCO group functional wavy fine particles prepared in the same manner as in Example 1, and then water was added to the diluted water by adding 2% by weight of HEC (Hydroxyethy Cellulose) ), 0.115 kg of titanium oxide, 0.15 kg of silica and 0.3 kg of a blue pigment were added, and 0.1 kg of a polycarboxylic acid sodium salt type dispersant (manufacturer name: SN-DISPERSANT 44S) and a silicone silicone antifoaming agent 0.1kg of Purified Hydrous Magnesium aluminum-silicate anti-settling agent (trade name: Active Minerals, product name S22) was added and stirred to prepare a water-based paint.

(Example 3)

0.65 kg of a polyether polyol (hydroxyl group (mg KOH / g) 335) as a hydroxyl group functional agent was added to 10 kg of the waxy fine particles prepared in the same manner as in Example 1, 0.045 kg of cyclohexyl acetate was added as a penetrating agent, And the mixture was reacted at 93 ° C for 2 hours to prepare hydroxyl group functional surfactant microparticles.

Then, 5 kg of an elastomeric polyurethane (polyol-based prepolymer, solid content 97.7%) as a vehicle was added to 10 kg of the hydroxyl group functional surfactant fine particles, and 0.15 kg of titanium oxide, 0.05 kg of silica, 0.5 kg of an iron oxide red pigment, : Active Minerals product name S22) and 0.2 kg of a silicone antifoaming agent (manufacturer name: Shinetsu product name: KF69) were added and stirred to prepare an elastic polyol paint.

(Example 4)

To 10 kg of the wavy fine particles prepared in the same manner as in Example 1, 0.5 kg of a diisocyanate prepolymer (100% solid content, NCO% 45) as an NCO group functional agent was added. Next, 0.05 kg of di (propylene glycol) methylether acetate as a penetrating agent was added, mixed, sealed, and reacted at 91 ° C for 4 hours to prepare NCO group functional surfactant microspheres.

Then, 17.5 kg of a polyisocyanate prepolymer (solid content: 97%, NCO: 47%) as a vehicle was added to 10 kg of NCO group functional surfactant microparticles and mixed to prepare a crosslinking paint.

(Example 5)

To 10 kg of the wavy fine particles prepared in the same manner as in Example 1, 0.5 kg of a diisocyanate prepolymer solid content 100% (solid content 100%, NCO 45%) was added as an NCO group functional agent. Next, 0.05 kg of di (propylene glycol) methylether acetate as a penetrating agent was added, mixed, sealed, and reacted at 91 ° C for 4 hours to prepare NCO group functional surfactant microspheres.

The UV curable coating material was prepared by mixing 20 kg of a urethane acrylic photocurable resin (98.5% solids) which is cured at a UV intensity of 1250 mW / cm 2 in 10 kg of NCO Group functional wavy particles.

(Example 6)

1 kg of an amine resin prepolymer (TAV (mgKOH / g) 275) as an amine group functional agent was added to 10 kg of the waxy fine particles prepared in the same manner as in Example 1 above. Next, 0.04 kg of 1,6-hexanediol diacetate was added as a penetrating agent, mixed and sealed, and reacted at 79 ° C for 6 hours to prepare amine group functional surfactant microparticles.

To 10 kg of the above-mentioned Amine group functional surfactant microparticles, an epoxy powder resin (trade name: EY163 (average particle size: SIZE 50 ± 30 μm (ASTM D 192), MOISTURE CONTENT: <0.5% Z 245.2, non-volatile content 99.5% or more (CAN / CSA Z 245.2)) was added and mixed to prepare an epoxy powder coating.

(Comparative Examples)

All of the comparative examples were prepared in the same manner as in Examples 1 to 6 except that waste PET fine particles were used instead of the functional wax fine particles.

The waste PET fine particles were prepared by crushing the waste PET container into flake-shaped particles having an average size of 13.5 mm, washing it in the same manner as in Example 1, and then drying it at a temperature of 60 to 120 ° C for 2 hours to prepare washed flake- , And this was put into a rotary mill having a blade thickness of 0.5 mm and a rotation speed of 10,000 rpm and pulverized to prepare fine particles having an average particle size of 75 탆.

(Test Example 1)

The physical properties of Examples 1 to 6 and Comparative Examples were measured, and the results are shown in Table 1 below.

Test Example 1 Results division Adhesion (Mpa)
KS M ISO 4624 (2016) Impact resistance (Mpa)
ASTM D2793-93 Abrasion resistance (mg)
ASTM D 4060-14 Example 1 9.2 10.2 37 Comparative Example 1 4.6 5.4 93 Example 2 11.2 10.2 26 Comparative Example 2 5.3 5.8 89 Example 3 12.2 12.2 23 Comparative Example 3 7.1 7.8 76 Example 4 11.2 12.1 24 Comparative Example 4 6.8 7.8 75 Example 5 11.2 11.3 27 Comparative Example 5 6.9 8.8 65 Example 6 16.2 17.3 23 Comparative Example 6 10.9 11.8 55

As can be seen from the above Table 1, Examples 1 to 6 of the present invention were all superior to Comparative Examples 1 to 6 in physical properties such as adhesion, impact resistance and abrasion resistance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

Claims (5)

Pulverizing waste polyethylene terephthalate (PET) into flake-like particles,
Cleaning the crushed fleece particles;
Preparing the washed flakes as wavy fine particles,
Mixing the functional agent and the penetrating agent in the prepared wavy fine particles and reacting the resulting wavy fine particles at 30 to 150 ° C for 10 minutes to 24 hours to produce functional wavy fine particles;
And a step of preparing a coating material by mixing the produced functional waving fine particles with a vehicle as a vehicle,
Wherein the functional agent comprises at least one functional group selected from the group consisting of an aqueous isocyanate group functional group, an aqueous amine group functional group, an isocyanate group functional group, an amine group functional group, a hydroxy group functional group and a silane group functional group,
The functional agent,
Soluble diisocyanate prepolymer, a water-soluble amine resin prepolymer, a diisocyanate prepolymer, an amine resin prepolymer, a polyether polyol, a polyester polyol, a polyether diol, a polyester diol, At least one of acrylic polyol, poly carbonate diol, silanol, vinyl silane, amino acid silane, epoxy silane and methacryloxy silane,
The penetrating agent may be selected from the group consisting of cyclohexyl acetate, dipropylene glycol dimethyl, propylene glycol diacetate, dipropylene glycol-n-propyl ether methyl-n-propyl ether, di (propylene glycol) methylether acetate, 1,4-butanediol diacetate, At least one selected from the group consisting of 1,3-butylene glycol diacetate, 1,6-hexanediol diacetate and TEXANOL,
Wherein 0.1 to 100 parts by weight of the functional agent and 0.1 to 10 parts by weight of the penetrating agent are mixed with 100 parts by weight of the prepared wavy particulate.
The method according to claim 1,
Wherein the step of pulverizing the waste polyethylene terephthalate into flake-
The pulverized polyethylene terephthalate is pulverized into a particle size of 10 to 20 mm,
The step of washing the ground particles comprises:
(AOPs, Advanced Oxidation Process) of the wastewater generated during the first cleaning by washing the ground particles with washing water at 50 to 90 ° C,
A third step of filtering the wastewater generated during the secondary cleaning by performing secondary washing with the washing water having a temperature of 70 to 95 DEG C,
Stage filtration of the wastewater generated during the third rinsing, wherein the second cleaning step includes a third step of rinsing the second cleaned flakes with washing water at 80 to 100 ° C,
The advanced oxidation treatment, the three-stage filtering and the two-stage filtered wastewater are reused as washing water,
The step of preparing the washed flakes as the particulate wax comprises:
The washed particulate particles are put into a rotary mill equipped with a blade having a thickness of 1 to 3 mm and rotated at 2,000 to 100,000 rpm to produce particulate particulate having a particle size of 1 to 600 占 퐉. And a method for producing an oriented polymer coating material using the same.
delete The method according to claim 1,
The vehicle-
At least one of an aqueous vehicle, an oil-based vehicle, a photocurable resin which is cured at a UV intensity in the range of 60 mW / cm 2 to 2000 mW / cm 2,
The aqueous vehicle is at least one of polyacryl emulsion, polyester emulsion, epoxy emulsion, polyisocyanate emulsion, polyamine resin emulsion, polyurethane emulsion, vinyl acetate emulsion, SBR latex, NBR latex and NR latex,
The oily vehicle is one or more of polyurethane, polyacrylic, PMMA (polymethylmethacrylate), polyester, polyepoxy, polyamine, polymelamine, polyisocyanate, polysiloxane resin and fluorine resin,
The photocurable resin may be at least one selected from the group consisting of an acrylic photocurable liquid resin, a urethane acrylic photocurable liquid resin, an epoxy acrylic photocurable liquid resin, a polyester acrylic photocurable liquid resin, a polyether acrylic photocurable liquid resin and a side chain acroyl acrylic photocurable liquid resin , &Lt; / RTI &gt;
The fusible powder resin is at least one of an epoxy powder resin, a polyurethane powder resin, a polyester powder resin, a polyacrylic powder resin and a melamine powder resin,
A method for producing an oriented polymer coating material using waste polyethylene terephthalate according to claim 1, wherein 30 to 500 parts by weight of the vehicle is mixed with 100 parts by weight of the produced functional wavy fine particles.
An oriented polymer coating material using waste polyethylene terephthalate, which is produced by the method of any one of claims 1, 2 and 4.

Images