KR20120109697A - Foam type powder coating composition for parts of vehicle - Google Patents

Foam type powder coating composition for parts of vehicle Download PDF

Info

Publication number
KR20120109697A
KR20120109697A KR1020110026737A KR20110026737A KR20120109697A KR 20120109697 A KR20120109697 A KR 20120109697A KR 1020110026737 A KR1020110026737 A KR 1020110026737A KR 20110026737 A KR20110026737 A KR 20110026737A KR 20120109697 A KR20120109697 A KR 20120109697A
Authority
KR
South Korea
Prior art keywords
weight
powder coating
coating composition
foaming
blowing agent
Prior art date
Application number
KR1020110026737A
Other languages
Korean (ko)
Other versions
KR101297779B1 (en
Inventor
문병수
이진석
백병갑
Original Assignee
주식회사 케이씨씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이씨씨 filed Critical 주식회사 케이씨씨
Priority to KR1020110026737A priority Critical patent/KR101297779B1/en
Publication of KR20120109697A publication Critical patent/KR20120109697A/en
Application granted granted Critical
Publication of KR101297779B1 publication Critical patent/KR101297779B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
    • C08K5/3155—Dicyandiamide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C08K5/3445—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C08K5/3462—Six-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/50—Phosphorus bound to carbon only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/267—Magnesium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates

Abstract

PURPOSE: An expandable powder paint composition is provided to form a thick film with excellent chipping resistance and impact resistance with a small amount, thereby capable of improving fuel efficiency by reducing paint use and weight thereby reducing costs. CONSTITUTION: An expandable powder paint composition comprises: 20-90 weight% of a bisphenol A-type epoxy resin of which an epoxy equivalent is 400-3000; 0.5-20 weight% of a hardener; 0.01-1.0 weight% of a curing agent; 5-70 weight% of inorganic filler; 1-10 weight% of general additives; and 0.01-50 weight% of color pigment. The foaming agent has an average particle size of 6-40 microns, an initial foaming temperature of 90-160°C and a maximum foaming temperature of 130-220°C. The foaming agent has a structure of a microcapsule or microsphere.

Description

자동차 부품용 발포형 분체도료 조성물{FOAM TYPE POWDER COATING COMPOSITION FOR PARTS OF VEHICLE}Foamed powder coating composition for automobile parts {FOAM TYPE POWDER COATING COMPOSITION FOR PARTS OF VEHICLE}

본 발명은 자동차 부품용 분체도료 조성물에 관한 것으로, 더욱 자세하게는 내칩핑성과 내충격성이 뛰어난 자동차 부품용 발포형 분체도료 조성물에 관한 것이다.The present invention relates to a powder coating composition for automotive parts, and more particularly to a foam powder composition for automotive parts excellent in chipping resistance and impact resistance.

일반적으로, 자동차 부품들의 외관을 향상시키고 표면을 보호하기 위하여 외면에 도료를 도장하고 있다.In general, paint is coated on the outer surface to improve the appearance and protect the surface of automobile parts.

종래에는 자동차 부품을 도장하는 용도로 액체형의 폴리비닐 클로라이드(poly-vinyl chloride, PVC) 도료를 많이 사용하였으나, 최근에 내칩핑성(chipping resistant)과 내충격성에 대한 요구가 증가함에 따라 도막의 두께가 두꺼워지면서 문제점이 발생하고 있다. Conventionally, many types of liquid polyvinyl chloride (PVC) paints have been used for painting automotive parts. However, as the demand for chipping resistance and impact resistance increases, the thickness of the coating film is increased. Thickening is causing problems.

우선 액체형 도료를 두껍게 도장하기 위해서는 도료의 사용량이 증가하여 비용이 크게 증가하며, 두꺼운 도막에 의한 부품의 무게 증가에 의해서 자동차 전체의 무게가 증가하여 연비가 낮아지는 단점이 있다.First of all, in order to thicken the liquid type paint, the amount of paint is increased and the cost is greatly increased, and the weight of the entire vehicle is increased by the weight of the parts due to the thick coating film, and thus the fuel economy is lowered.

도막의 무게를 줄이는 방법으로는 분체도료(분말도료)를 사용할 수 있다. 일반적인 분체도료 도장방법은 피도물을 접지시켜 +극으로 만들고, 강한 전압을 걸어 분체도료를 -극으로 만들면 정전기적 인력에 의해 도막을 형성하는 것이다. 그러나 이러한 분체도료를 이용한 도장은 도막의 두께가 두꺼워 지면 -극끼리의 정전기적 반발에 의해 도장이 어려지기 때문에 두꺼운 도막을 형성할 수 없다.Powder coating (powder coating) can be used to reduce the weight of the coating film. The general powder coating method is to ground the workpiece to the positive pole and apply a strong voltage to the powder to the negative pole to form a coating film by electrostatic attraction. However, when the coating using the powder coating is thick, the coating is difficult to form due to the electrostatic repulsion between the poles-can not form a thick coating.

현재, 분체도료를 사용하여 두꺼운 도막을 형성하기 위하여, 2 내지 3회의 도장공정을 반복하는 방법과 피도물을 분체도료의 녹는점 이상으로 예열하여 도장하는 방법이 알려지고 있다. 그러나 2회 이상의 도장공정을 반복하는 경우에는 도료의 사용량 증가와 공정의 반복에 따른 작업성 및 생산성 저하에 의한 비용 상승이 문제가 될 뿐만 아니라, 반복적인 도장에 의해 무게감소라는 분체도료의 장점이 없어지게 된다. 또한, 예열도장의 경우도 예열공정의 추가에 의한 작업성의 저하 등 동일한 문제점을 가지고 있다.
At present, in order to form a thick coating film using powder coating, a method of repeating two or three coating processes and a method of preheating the coating to a melting point or higher of the powder coating are known. However, if the coating process is repeated two or more times, the increase in the amount of paint used and the cost increase due to the decrease in workability and productivity due to the repetition of the process become a problem. It will disappear. In addition, the preheating coating also has the same problems such as deterioration of workability due to the addition of a preheating step.

본 발명은 전술한 액체형 폴리비닐 클로라이드 도료와 분체도료의 문제점을 해결하기 위한 것으로서, 내칩핑성과 내충격성이 뛰어난 두꺼운 도막을 적은 도료를 사용하여 형성함으로써 도료사용 감소에 의한 원가절감 및 무게 감소에 의한 연비향상의 효과가 있는 자동차 부품용 발포형 분체도료 조성물을 제공하는데 그 목적이 있다.The present invention is to solve the problems of the liquid-type polyvinyl chloride paint and powder coating described above, by forming a thick coating film having excellent chipping resistance and impact resistance by using a small paint to reduce the cost and weight reduction by reducing the use of paint An object of the present invention is to provide a foamed powder coating composition for automobile parts having an effect of improving fuel efficiency.

상기 과제를 해결하기 위한 수단으로서, 본 발명은 분체도료에 발포제를 적용하여 적은 분체도료를 사용하여 두꺼운 도막을 형성함으로써 비용과 연비를 절감하고, 내식성과 내칩핑성을 향상시킬 수 있는 자동차 부품용 발포형 분체도료 조성물을 제공한다.
As a means for solving the above problems, the present invention by applying a blowing agent to the powder coating to form a thick coating film using a small powder coating to reduce the cost and fuel economy, can improve the corrosion resistance and chipping resistance Provided is a foamed powder coating composition.

이하, 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

본 발명의 자동차 부품용 발포형 분체도료 조성물은, 에폭시 당량이 400~3000인 비스페놀 에이형 에폭시수지 20~90중량%; 경화제 0.5~20중량%; 경화보조제 0.01~1.0중량%; 무기충진제 5~70중량%; 통상의 첨가제 1~10중량%; 발포제 1~10중량%; 및 유색안료 0.01~50중량%를 포함하며, 상기 발포제는 평균입자크기가 6~40㎛이고, 초기발포온도가 90~160℃이고, 최대발포온도가 130~220℃이며, 마이크로캡슐 또는 마이크로스페어류 구조인 것을 특징으로 한다.Foamed powder coating composition for automobile parts of the present invention, the epoxy equivalent of 20 to 90% by weight bisphenol A epoxy resin of 400-3000; 0.5-20 weight% of hardeners; 0.01 to 1.0% by weight curing aid; Inorganic filler 5 to 70% by weight; 1-10% by weight of conventional additives; 1 to 10% by weight of blowing agent; And 0.01 to 50% by weight pigment, wherein the blowing agent has an average particle size of 6 ~ 40㎛, the initial foaming temperature is 90 ~ 160 ℃, the maximum foaming temperature is 130 ~ 220 ℃, microcapsules or microspare It is characterized by the same structure.

본 발명의 다른 태양에 의한 자동차 부품용 발포형 분체도료 조성물은, 에폭시 당량이 400~3000인 비스페놀 에이형 에폭시수지 10~70중량%; 산값이 10~100mgKOH/g인 폴리에스테르 10~70중량%; 경화보조제 0.01~1.0중량%; 무기충진제 10~70중량%; 통상의 첨가제 1~10중량%; 발포제 1~10중량%; 및 유색안료 0.01~50중량%를 포함하며, 상기 발포제는 평균입자크기가 6~40㎛이고, 초기발포온도가 90~160℃이고, 최대발포온도가 130~220℃이며, 마이크로캡슐 또는 마이크로스페어류 구조인 것을 특징으로 한다.Foamed powder coating composition for automobile parts according to another aspect of the present invention, 10 to 70% by weight of bisphenol A-type epoxy resin having an epoxy equivalent of 400 to 3000; 10 to 70% by weight of polyester having an acid value of 10 to 100 mgKOH / g; 0.01 to 1.0% by weight curing aid; 10 to 70% by weight of inorganic fillers; 1-10% by weight of conventional additives; 1 to 10% by weight of blowing agent; And 0.01 to 50% by weight pigment, wherein the blowing agent has an average particle size of 6 ~ 40㎛, the initial foaming temperature is 90 ~ 160 ℃, the maximum foaming temperature is 130 ~ 220 ℃, microcapsules or microspare It is characterized by the same structure.

일반적으로 화학발포제는 유기계 화학발포제와 무기계 화학발포제로 구분되며, 플라스틱 또는 고무에 첨가되어 특정한 온도, 압력 및 시간 등의 조건에서 열적으로 분해되어 미세 발포 구조체를 형성하는 것이다. 이렇게 형성된 미세 발포 구조체는 고탄력, 고강도, 보온, 비중 저하, 방음 및 충격 흡수 등의 효과를 부여하기 때문에, 차량용 범퍼, 내장 재료, 포장 재료, 구명복, 신발 및 바닥 장식 재료 등 그 사용 범위가 넓다.Generally, chemical foaming agents are classified into organic chemical foaming agents and inorganic chemical foaming agents, and are added to plastics or rubbers to thermally decompose under specific temperature, pressure, and time to form a fine foamed structure. The fine foam structure thus formed gives effects such as high elasticity, high strength, heat retention, specific gravity reduction, sound insulation and shock absorption, and thus has a wide range of use, such as vehicle bumpers, interior materials, packaging materials, life jackets, shoes, and floor decoration materials.

이러한 발포제들 중, 본 발명에서는 마이크로캡슐(microcapsule) 또는 마이크로스페어(microsphere)류 구조의 발포제를 사용한다. 마이크로캡슐 또는 마이크로스페어류 구조의 발포제는 하이드로카본과 같은 저온 휘발성 용제를 핵 물질로 하고 열가소성 고분자 막이 주위를 둘러싸서 형성된 구형체이며, 외부의 열을 흡수하여 열가소성 고분자 막이 녹으면서 내부의 하이드로카본이 최대 5배까지 부풀어올라 미세한 발포 구조체를 형성한다. Among these blowing agents, the present invention uses a blowing agent of a microcapsule or microsphere-like structure. A microcapsule or micro spare foaming agent is a spherical body formed by surrounding a thermoplastic polymer membrane with a low temperature volatile solvent such as hydrocarbon as a nuclear material and absorbing external heat to dissolve the thermoplastic polymer membrane while melting the thermoplastic polymer membrane. Inflate up to five times to form a fine foamed structure.

마이크로캡슐 또는 마이크로스페어류 구조의 발포제는 섬유, 페인트, 잉크, 발포 벽지 및 신발창용 사출 등에 사용되고 있으며, 적용 온도에 따라서 저온, 중온 및 고온 등으로 구분될 수 있다. 따라서 발포제의 초기발포온도와 최대발포온도를 적절하게 적용하는 것이 매우 중요하며, 또한 발포제의 평균입자크기도 분체도료에 적합한 범위에 해당하여야 한다.Foaming agents of microcapsules or microspare structures are used in the injection of fibers, paints, inks, foam wallpaper and shoe soles, and can be classified into low temperature, medium temperature and high temperature according to the application temperature. Therefore, it is very important to properly apply the initial foaming temperature and the maximum foaming temperature of the blowing agent, and also the average particle size of the blowing agent should be within the range suitable for powder coating.

본 발명은 자동차 부품용 분체도료에 적합한 발포제를 선택하여 적용한 자동차 부품용 분체도료 조성물에 대한 것이며, 90~150℃ 범위에서 초기발포가 서서히 시작되어 130~200℃ 범위에서 급속하게 발포가 일어나는 발포제를 사용하는 것이 자동차 부품용 분체도료에 적합하다. 또한, 발포제의 평균입자크기가 6~40㎛ 범위인 경우에 자동차 부품용 분체도료에 적합하다. 그리고 발포제가 1중량% 미만인 경우에는 발포효과를 충분히 얻을 수 없으며, 발포제가 10중량%를 초과하는 경우에는 도막의 안정성이 떨어진다.The present invention relates to a powder coating composition for automobile parts applied by selecting a foaming agent suitable for powder coating for automotive parts, the initial foaming is slowly started in the 90 ~ 150 ℃ range foaming agent rapidly foaming in the 130 ~ 200 ℃ range It is suitable for powder coating for automobile parts. In addition, when the average particle size of the blowing agent is in the range of 6 ~ 40㎛ it is suitable for powder coating for automotive parts. If the blowing agent is less than 1% by weight, the foaming effect cannot be sufficiently obtained, and if the blowing agent is more than 10% by weight, the stability of the coating film is poor.

이러한 분체도료를 도장하는 방법은 정전스프레이 도장법, 유동침적 도장법 및 예열도장법 등이 있다. 정전스프레이 도장법은 20~100kV의 전압과 0.5~5bar의 공기압으로 분체도료를 분사하여 도장하는 방법이다. 유동침적 도장법은 분체도료를 유동침적조에 유동시킨 뒤에 예열된 소지를 유동침적조에 침적하여 도장하는 방법이며, 침적의 시간 및 횟수에 따라 도막두께 및 비율을 조절할 수 있다. 예열도장법은 배치(batch)로 등에서 소지를 예열한 뒤에 예열된 소지를 도장하는 방법이다.Such powder coating methods include electrostatic spray coating, flow deposition coating, and preheat coating. Electrostatic spray coating method is spraying powder coating with voltage of 20 ~ 100kV and air pressure of 0.5 ~ 5bar. The flow deposition coating method is a method of depositing and preheating the preheated material by flowing the powder coating in the flow deposition tank, it is possible to adjust the film thickness and ratio according to the time and number of deposition. The preheat coating method is a method of preheating the body in a batch and then painting the preheated body.

본 발명에 사용되는 비스페놀 에이형 에폭시수지는 에폭시 당량이 400~3000 범위인 것을 사용하며, 바람직하게는 유연성과 내식성, 제조 작업성 확보를 위하여 800~1500 범위인 것을 사용한다. 당량이 400보다 낮은 경우에는 저장 안정성에 문제가 있고, 3000보다 높은 경우에는 점도가 너무 높아서 자동차 부품용 분체도료로 사용할 수 없다.The bisphenol A type epoxy resin used in the present invention uses an epoxy equivalent in the range of 400 to 3000, and preferably in the range of 800 to 1500 for securing flexibility, corrosion resistance, and manufacturing workability. If the equivalent is less than 400, there is a problem in storage stability, if it is higher than 3000, the viscosity is too high to be used as a powder coating for automotive parts.

그리고 경화제를 사용하는 경우, 비스페놀 에이형 에폭시수지는 20~90중량% 범위로 포함되어야 한다. 비스페놀 에이형 에폭시수지가 20중량%미만이면 반응이 빨라져서 발포층이 제대로 형성되지 않으며, 90중량%를 초과하는 경우에는 도료가 경화되지 못하는 문제가 발생한다.And when using a curing agent, bisphenol A epoxy resin should be included in the range of 20 to 90% by weight. When the bisphenol A-type epoxy resin is less than 20% by weight, the reaction is accelerated, and the foaming layer is not properly formed. When the bisphenol A type epoxy resin is more than 90% by weight, the paint cannot be cured.

본 발명에서 경화제는 폴리하이드릭 페놀경화제류, 디시안디아마이드, 하이드라이즈드계 경화제, 방향족 산무수물 및 지방족 산무수물류 중에서 선택된 하나 이상인 것이 바람직하며, 0.5~20중량%의 범위로 사용한다. 0.5중량% 미만을 사용하는 경우에는 경화가 일어나기 어려우며, 20중량%를 초과하여 사용하는 경우에는 반응이 빨라져서 발포층이 제대로 형성되지 못하는 문제가 생긴다.In the present invention, the curing agent is preferably at least one selected from polyhydric phenol curing agents, dicyanamide, hydride-based curing agents, aromatic acid anhydrides and aliphatic acid anhydrides, and is used in the range of 0.5 to 20% by weight. When using less than 0.5% by weight it is difficult to occur hardening, when using more than 20% by weight the reaction is faster to cause a problem that the foam layer is not formed properly.

본 발명에서 에폭시와 폴리에스테르를 동시에 적용한 하이브리드 분체도료 조성물을 사용하는 경우에는 경화제를 사용하지 않고, 산값이 10~100mgKOH/g 범위인 폴리에스테르를 사용하며, 바람직하게는 우수한 외관과 유연성, 내충격성 및 제조 작업성의 확보를 위하여 10~70중량% 범위로 사용한다. 산값이 10mgKOH/g 미만인 경우에는 기계적 물성 및 저장성이 떨어지고, 100mgKOH/g을 초과하는 경우에는 외관이 저하되는 문제가 발생한다. In the present invention, when using a hybrid powder coating composition applied with epoxy and polyester at the same time, a polyester having an acid value in the range of 10 to 100 mgKOH / g is used without using a curing agent, and preferably has excellent appearance, flexibility and impact resistance. And it is used in the range of 10 to 70% by weight to ensure manufacturing workability. If the acid value is less than 10mgKOH / g, the mechanical properties and storage properties are inferior, when the acid value exceeds 100mgKOH / g problems arise that the appearance is lowered.

이러한 폴리에스테르는 10~70중량%의 범위로 함유되는 것이 바람직하며, 10중량% 미만으로 사용하면 은폐력이 좋지 못하고 도막의 경도가 약해지며, 70중량%를 초과하는 경우에는 에폭시 수지의 부재로 인하여 겔화 시간이 당겨져서 반응이 빠르게 완결되기 때문에 미처 반응하지 못한 미 반응기가 존재하여 외관 및 기계적 물성이 떨어지는 문제가 있다. 폴리에스테르의 함유에 의하여 비스페놀 에이형 에폭시수지는 10~70중량% 범위로 포함되어야 한다.Such polyester is preferably contained in the range of 10 to 70% by weight, the use of less than 10% by weight is not good hiding power, the hardness of the coating film is weakened, if it exceeds 70% by weight due to the absence of epoxy resin Since the reaction is completed quickly because the gelation time is pulled, there is a problem in that the unreacted reactor is not present, resulting in poor appearance and mechanical properties. Due to the polyester content, bisphenol A epoxy resin should be included in the range of 10 to 70% by weight.

본 발명에서 경화보조제는 이미다졸류, 이미다졸 변성에폭시, 디비유 및 디비유염, 트리페닐포스핀 및 금속킬레이트 중에서 선택된 하나 이상일 수 있으며, 0.01~1.0중량% 범위로 첨가되는 것이 바람직하다. 경화보조제가 0.01중량% 미만인 경우에는 도료의 경화성이 저하되고 외관이 불량해지며, 1.0중량%를 초과하는 경우에는 도료가 너무 빨리 경화되어 원하는 발포층을 형성하지 못하는 문제가 발생한다.In the present invention, the curing aid may be at least one selected from imidazoles, imidazole modified epoxy, dibi oil and dibi salts, triphenylphosphine and metal chelates, and is preferably added in the range of 0.01 to 1.0% by weight. When the curing aid is less than 0.01% by weight, the curability of the paint is lowered and the appearance is poor. When the curing aid is more than 1.0% by weight, the paint cures too quickly to form a desired foam layer.

본 발명에서 무기충진제는 바륨설페이트, 실리카, 수산화알루미나, 티타늄다이옥사이드, 탄산칼슘, 탄산마그네슘, 알루미나, 운모, 월라스토나이트 및 탈크 중에서 선택된 하나 이상일 수 있으며, 무기충진제가 5중량% 미만으로 첨가되는 경우에는 도장 시에 새깅(sagging)현상이 생겨 도막형성에 어려움이 있으며, 무기충진제가 70중량%를 초과하는 경우에는 내굴곡성 등의 물성이 저하되는 문제가 발생한다.In the present invention, the inorganic filler may be at least one selected from barium sulfate, silica, alumina hydroxide, titanium dioxide, calcium carbonate, magnesium carbonate, alumina, mica, wollastonite and talc, when the inorganic filler is added in less than 5% by weight There is a difficulty in forming a coating film due to sagging during coating, and when the inorganic filler exceeds 70% by weight, there is a problem in that physical properties such as flex resistance are lowered.

본 발명에 사용되는 유색 안료는 색상을 나타내기 위하여 사용하며, 그 종류는 매우 다양하여 특별히 제한되지 않는다. 대표적인 예로서는 백색, 흑색, 황색, 청색, 녹색이 있으며, 백색은 티타늄 디옥사이드 계통의 R706, R902(듀퐁), CR-80, 85, 95(이시하라 제품), 흑색은 카본 블랙 계통의 MA-100, 600(미쓰비시), Raven5000 (아이씨아이), 황색은 팔리오탄 옐로우 L1945(한국바스프), 이르가컬러 옐로우 BVB 1391(시바), 청색은 울트라마린 블루 EP-62(누비오라), 프달로시아닌블루(대한스위스), 녹색은 마이크로리스 그린 G-T(시바), 프타로시아그린(대한스위스) 등이 사용될 수 있다.The colored pigments used in the present invention are used to exhibit color, and the kind thereof is very various and is not particularly limited. Representative examples include white, black, yellow, blue, and green, white is R706, R902 (Dupont), CR-80, 85, 95 (manufactured by Ishihara) based on titanium dioxide, and black is MA-100, 600 based on carbon black. (Mitsubishi), Raven5000 (IC), yellow is paliotan yellow L1945 (BASF Korea), Irga color yellow BVB 1391 (SHIBA), blue is ultramarine blue EP-62 (nubiora), pedalocyanine blue ( Korea green), microless green GT (Chiba), phthalocyanine green (Korea Switzerland) and the like can be used.

이러한 유색 안료는 0.01~50중량% 범위인 것이 바람직하며, 0.01중량% 미만인 경우에는 색상 발현이 어렵고, 50중량%를 초과하는 경우에는 외관 및 물성이 저하되어 바람직하지 않다.It is preferable that such a colored pigment is in the range of 0.01 to 50% by weight. If it is less than 0.01% by weight, color development is difficult.

그리고 본 발명의 자동차 부품용 발포형 분체도료 조성물은 통상의 첨가제가 1~10중량% 첨가될 수 있다. 이러한 통상의 첨가제로는 핀홀방지제, 흐름향상제, 아크릴계 첨가제, 올레핀계 왁스, 안료, 흐름방지 및 디개싱 도료의 유동성 개선을 위한 친수성 및 소수성 실리카 등이 사용될 수 있다.And the foaming powder coating composition for automobile parts of the present invention may be added 1 to 10% by weight of a conventional additive. As such conventional additives, hydrophilic and hydrophobic silicas for improving the fluidity of a pinhole inhibitor, a flow enhancer, an acrylic additive, an olefin wax, a pigment, a flow preventing and degassing paint, and the like can be used.

흐름 방지제로는 아크릴계와 실리콘계가 사용될 수 있으며, 아크릴계의 예를 들면 모다플로우, PV-5(몬산토사 제품), PL-201(월리사 제품), 아크로날-4F(바스프사 제품)등이 사용될 수 있다.Acryl-based and silicone-based may be used as the flow preventing agent. Examples of acryl-based include Modaflow, PV-5 (manufactured by Monsanto), PL-201 (manufactured by Wally), and Acronal-4F (manufactured by BASF). Can be.

이러한 첨가제가 1중량% 미만으로 첨가되면, 첨가제의 첨가에 의한 효과를 얻을 수 없으며, 10중량%를 초과하는 경우에는 분체도료의 전체적인 물성을 떨어뜨리는 문제가 있다.If the additive is added in less than 1% by weight, the effect by the addition of the additive can not be obtained, if it exceeds 10% by weight there is a problem of deteriorating the overall physical properties of the powder coating.

상술한 바와 같이 구성된 본 발명은, 에폭시 분체도료 또는 에폭시와 폴리에스테르가 동시에 적용된 하이브리드 분체도료 조성물에 발포제를 적용함으로써, 적은 양의 도료를 사용하여 두꺼운 도막을 형성함과 동시에 다른 물성에서도 동등한 정도의 결과를 나타내어 전체적으로 뛰어난 물성을 나타내는 자동차 부품용 분체도료 조성물을 제공할 수 있는 효과가 있다.According to the present invention configured as described above, by applying a blowing agent to an epoxy powder coating or a hybrid powder coating composition to which epoxy and polyester are applied at the same time, a thick coating film is formed using a small amount of paint and at the same level in other physical properties. The results show that the powder coating composition for automobile parts exhibiting excellent physical properties as a whole can be provided.

또한, 두꺼운 도막을 통해서 내칩핑성과 내충격성 및 내부식성이 향상된 자동차 부품용 분체도료 조성물을 제공하는 효과가 있다.
In addition, there is an effect of providing a powder coating composition for automotive parts with improved chipping resistance, impact resistance and corrosion resistance through a thick coating film.

이하, 본 발명의 이해를 돕기 위하여 실시예 및 비교예에 의하여 보다 구체적으로 설명한다. 하기 실시예는 본 발명을 예시하기 위한 것일 뿐 본 발명의 범주 및 기술사상 범위 내에서 다양한 변경 및 수정할 수 있음은 통상의 기술자에게 있어 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속하는 것도 당연한 것이다.
Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. The following examples are only intended to illustrate the invention, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the invention, and such variations and modifications also belong to the appended claims. It is natural.

<분체도료 제조>Powder Coating Manufacturing

본 발명의 실시예에 따른 분체도료와 비교예에 따른 분체도료를 제조하기 위하여, 다음의 약호, 성분 및 상품명의 물질들을 하기 표 1에 나타낸 배합비율(중량%)로 준비하였다.In order to prepare a powder coating according to an embodiment of the present invention and a powder coating according to a comparative example, the following symbols, ingredients and materials of the trade name were prepared in the compounding ratio (% by weight) shown in Table 1 below.

에폭시: 에폭시 당량 800~1500(KCC)Epoxy: epoxy equivalent 800-1500 (KCC)

폴리에스테르: 산값 25~80 mgKOH/g(KCC)Polyester: Acid value 25-80 mgKOH / g (KCC)

경화제: 폴리하이드릭 페놀수지, 수산기 당량 200 ~ 400(KCC)Curing agent: Polyhydric phenol resin, hydroxyl equivalent 200 ~ 400 (KCC)

경화촉진제: 2-MI(SIKOKU)Curing accelerator: 2-MI (SIKOKU)

표면조정제: PLP-100(KS 케미칼)Surface conditioner: PLP-100 (KS chemicals)

핀홀방지제: BENZOIN(미원)Pinhole inhibitor: BENZOIN (Miwon)

유색안료: MA-100(MITUSBISHI)Colored pigments: MA-100 (MITUSBISHI)

무기 충진제: OMYACARB 5(OMYA)Inorganic filler: OMYACARB 5 (OMYA)

발포제: Expancel DU(악조노벨)
Blowing agent: Expancel DU

원료Raw material 실시예 1Example 1 실시예 2Example 2 비교예1Comparative Example 1 비교예2Comparative Example 2 에폭시 수지Epoxy resin 5050 3030 5151 3131 폴리에스테르Polyester -- 3030 -- 3131 경화제Hardener 1010 -- 1111 -- 2-MI2-MI 0.40.4 0.40.4 0.40.4 0.40.4 PLP100PLP100 1One 1One 1One 1One BENZOINBENZOIN 1One 1One 1One 1One MA-100MA-100 1One 1One 1One 1One OMYACARB 5OMYACARB 5 33.633.6 33.633.6 34.634.6 34.634.6 EXPANCEL DUEXPANCEL DU 33 33 -- -- 총합total 100100 100100 100100 100100

그리고 준비된 물질을 다음의 순서에 따라서 분체도료로 제조하였다.Then, the prepared material was prepared in powder coating in the following order.

먼저, 발포제를 제외한 원료들을 배합한 뒤에 컨테이너 믹서로 섞어서 균일하게 혼합하고, 균일하게 혼합된 조성물을 니더(kneader) 또는 익스트루더(extruder)의 압출기를 통하여 90~120℃에서 용융 혼합한 뒤에 분쇄기로 분쇄하여 평균입자크기가 30~60㎛인 분체도료를 제조하였다.First, the raw materials other than the foaming agent are blended, mixed in a container mixer, and uniformly mixed. The uniformly mixed composition is melt mixed at 90 to 120 ° C. through an extruder of a kneader or an extruder, and then a grinder. Grinding to prepare a powder coating having an average particle size of 30 ~ 60㎛.

마지막으로 제조된 분체도료에 발포제를 혼합하고 균일하게 섞어서 본 실시예의 자동차 부품용 발포형 분체도료를 제조하였다. 니더 또는 익스트루더의 압출기를 통하여 용융 혼합하는 과정에서 발포제가 발포되는 것을 방지하기 위하여 발포제를 마지막에 혼합한다.Finally, the foaming agent was mixed and uniformly mixed with the prepared powder coating to prepare a foaming powder coating for automobile parts of the present embodiment. The blowing agent is mixed last to prevent foaming agent from foaming during melt mixing through the extruder of the kneader or extruder.

상기한 실시예와 비교예의 분체도료를 도장하여 시편을 제조하고 그 물성을 평가하였다.The powder coatings of Examples and Comparative Examples described above were coated to prepare specimens and the physical properties thereof were evaluated.

본 실시예에 대한 시편 제작방법 및 물성 평가방법은 통상적인 KS 및 ASTM 규격을 적용하였다. 또한, 이는 본 발명의 효과를 설명하기 위한 예시이며, 본 발명의 도장방법 및 물성에 대한 범주를 규정하는 것은 아니다.
Specimen preparation method and physical property evaluation method for this embodiment was applied to the conventional KS and ASTM standards. In addition, this is an example for explaining the effect of this invention, and does not prescribe the category about the coating method and a physical property of this invention.

<시편의 제조><Production of Specimen>

65×150×0.7㎜T 두께의 냉연강판에 인산아연피막 또는 인산철피막 표면 전처리를 하거나, 65×150×2㎜T 두께의 열연강판 또는 냉연강판에 그리트 및 쇼트 등으로 연마하여, 소지 표면의 블라스트 앵커 프로파일을 40~100㎛이 되도록 하며, 스웨덴 규격 SA 2.5의 청소상태로 표면 전처리 하였다.Pretreatment of zinc phosphate coating or iron phosphate coating on 65 × 150 × 0.7 mmT thick cold rolled steel sheet or grinding of hot rolled steel or cold rolled steel sheet 65 × 150 × 2 mmT thick with grit and shot, etc. Blast anchor profile was 40 ~ 100㎛, and the surface was pretreated in a clean state of the Swedish standard SA 2.5.

준비된 강판에 앞서 제조한 분체도료를 70㎛의 도막두께로 도장하고, 10~30분 정도 경화로에서 경화시켰다. The powder coating prepared above was coated on the prepared steel sheet with a coating thickness of 70 µm and cured in a curing furnace for about 10 to 30 minutes.

도장방법으로는 통상의 정전스프레이법, 유동침적법 등을 적용하였다.
As the coating method, a conventional electrostatic spraying method, flow deposition method, and the like were applied.

<물성평가><Property Evaluation>

상기한 방법으로 제조된 시편에 대한 물성평가 결과는 표 2와 같다.Property evaluation results for the specimen prepared by the above method are shown in Table 2.

실시예 1Example 1 실시예 2Example 2 비교예 1Comparative Example 1 비교예 2Comparative Example 2 도장 뒤 도막두께Coating thickness after painting 70㎛70㎛ 70㎛70㎛ 70㎛70㎛ 70㎛70㎛ 경화 뒤 도막두께Film thickness after curing 180㎛180 μm 180㎛180 μm 70㎛70㎛ 70㎛70㎛ 내식성 (720시간)Corrosion resistance (720 hours) 1mm1mm 2mm2mm 2mm2mm 3mm3mm 내칩핑성Chipping resistance 흔적 미세Traces fine 흔적 미세Traces fine 깨짐 발생Broken 깨짐 발생Broken

시편의 내식성은 도막 표면에 X-형 절개를 실시하고, ASTM B 117의 방법인 35℃에서 5% NaCl 수용액을 분무하는 조건에 노출시키는 방법으로 시험하였으며, 720시간 뒤에 X-형 절개된 부분의 도막을 강판으로부터 떼어낼 때의 벗겨지는 정도를 길이로 측정하였다.The corrosion resistance of the specimen was tested by X-shaped incision on the surface of the coating and exposure to spraying condition of 5% NaCl aqueous solution at 35 ° C, which is the method of ASTM B 117, and after 720 hours, The peeling degree at the time of peeling a coating film from a steel plate was measured by length.

내칩핑성은 내칩핑성 시험기인 그라베로메터(gravelometer)를 이용하여 HMC MS 600-35의 방법을 적용하였다. 먼저, -20℃의 시편을 45도로 기울어지도록 거치대에 거치시키고, 그라베로메터에서 강한 압력으로 칩핑돌(쇄석)을 시편에 분사한다. 시편의 도막에 남아있는 박리된 도막 등의 이물질을 셀로판 점착 테이프로 제거하고, 시편의 손상 정도를 등급으로 판정하였다. 일반적으로 박리된 면적의 직경이 2mm를 넘는 경우 불합격 처리한다.The chipping resistance was applied to the method of HMC MS 600-35 using a gravelometer (chipelometer), a chipping resistance tester. First, the specimen is mounted on the holder so that the specimen at -20 ° C is inclined at 45 degrees, and the chipping stones (crushed stone) are sprayed on the specimen at a high pressure in the graverometer. The foreign matter such as the peeled coating film remaining on the coating film of the specimen was removed with a cellophane adhesive tape, and the degree of damage of the specimen was determined as a grade. Generally, when the diameter of the exfoliated area exceeds 2mm, it is rejected.

이에 따르면, 본 실시예의 분체도료를 사용하면 비교예의 분체도료와 동일한 두께로 도막을 형성하여도, 경화 뒤에는 도막두께가 2배가 넘게 증가한 것을 알 수 있다. 이는 본 실시예의 분체도료를 이용하면 자동차 부품에서 요구되는 정도의 두꺼운 도막을 형성할 수 있을 뿐만 아니라, 두꺼운 도막 형성에 필요한 분체도료의 양도 매우 적다는 것을 확인시켜준다.According to this, when using the powder coating of this Example, even if it forms a coating film with the same thickness as the powder coating of a comparative example, it turns out that the coating film thickness increased more than twice after hardening. This confirms that the use of the powder coating of the present embodiment can not only form a thick coating film required for automobile parts, but also a very small amount of powder coating required for forming a thick coating film.

또한, 도막두께의 증가에 따라서 내식성과 내칩핑성이 모두 향상된 것을 확인할 수 있다.In addition, it can be seen that both the corrosion resistance and the chipping resistance improved as the thickness of the coating film increased.

Claims (7)

에폭시 당량이 400~3000인 비스페놀 에이형 에폭시수지 20~90중량%;
경화제 0.5~20중량%;
경화보조제 0.01~1.0중량%;
무기충진제 5~70중량%;
통상의 첨가제 1~10중량%;
발포제 1~10중량%; 및
유색안료 0.01~50중량%를 포함하며,
상기 발포제는 평균입자크기가 6~40㎛이고, 초기발포온도가 90~160℃이고, 최대발포온도가 130~220℃이며, 마이크로캡슐 또는 마이크로스페어(microsphere)류 구조인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
20 to 90% by weight of bisphenol A type epoxy resin having an epoxy equivalent of 400 to 3000;
0.5-20 weight% of hardeners;
0.01 to 1.0% by weight curing aid;
Inorganic filler 5 to 70% by weight;
1-10% by weight of conventional additives;
1 to 10% by weight of blowing agent; And
Contains 0.01-50% by weight of pigmented pigment,
The blowing agent has an average particle size of 6 ~ 40㎛, the initial foaming temperature is 90 ~ 160 ℃, the maximum foaming temperature is 130 ~ 220 ℃, automotive parts, characterized in that the microcapsule or microsphere (microsphere) structure Foamed powder coating composition for use.
에폭시 당량이 400~3000인 비스페놀 에이형 에폭시수지 10~70중량%;
산값이 10~100mgKOH/g인 폴리에스테르 10~70중량%;
경화보조제 0.01~1.0중량%;
무기충진제 5~70중량%;
통상의 첨가제 1~10중량%;
발포제 1~10중량%; 및
유색안료 0.01~50중량%를 포함하며,
상기 발포제는 평균입자크기가 6~40㎛이고, 초기발포온도가 90~160℃이고, 최대발포온도가 130~220℃이며, 마이크로캡슐 또는 마이크로스페어(microsphere)류 구조인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
10 to 70% by weight of bisphenol A epoxy resin having an epoxy equivalent of 400 to 3000;
10 to 70% by weight of polyester having an acid value of 10 to 100 mgKOH / g;
0.01 to 1.0% by weight curing aid;
Inorganic filler 5 to 70% by weight;
1-10% by weight of conventional additives;
1 to 10% by weight of blowing agent; And
Contains 0.01-50% by weight of pigmented pigment,
The blowing agent has an average particle size of 6 ~ 40㎛, the initial foaming temperature is 90 ~ 160 ℃, the maximum foaming temperature is 130 ~ 220 ℃, automotive parts, characterized in that the microcapsule or microsphere (microsphere) structure Foamed powder coating composition for use.
청구항 1 또는 청구항 2에 있어서,
상기 발포제가, 아크릴계 수지가 주성분이며 하이드로카본 구조체를 열가소성 물질이 감싸고 있는 마이크로캡슐 또는 마이크로스페어류 구조인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
The method according to claim 1 or 2,
The foaming agent is a foaming powder coating composition for automobile parts, characterized in that the acrylic resin is the main component and the hydrocarbon structure is a microcapsule or micro spare structure surrounding the hydrocarbon structure.
청구항 1 또는 청구항 2에 있어서,
상기 비스페놀 에이형 에폭시수지의 에폭시 당량이 800~1500인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
The method according to claim 1 or 2,
Foam type powder coating composition for automobile parts, characterized in that the epoxy equivalent of the bisphenol A-type epoxy resin is 800 ~ 1500.
청구항 1 또는 청구항 2에 있어서,
상기 경화보조제가, 이미다졸류, 이미다졸 변성에폭시, 디비유 및 디비유염, 트리페닐포스핀 및 금속킬레이트 중에서 선택된 하나 이상인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
The method according to claim 1 or 2,
The hardening aid is at least one selected from imidazoles, imidazole modified epoxy, di-oil and di-sulphate, triphenylphosphine and metal chelate foaming powder composition for automotive parts.
청구항 1 또는 청구항 2에 있어서,
상기 무기충진제가, 바륨설페이트, 실리카, 수산화알루미나, 티타늄다이옥사이드, 탄산칼슘, 탄산마그네슘, 알루미나, 운모, 월라스토나이트 및 탈크 중에서 선택된 하나 이상인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.
The method according to claim 1 or 2,
The inorganic filler is, at least one selected from the group consisting of barium sulfate, silica, alumina hydroxide, titanium dioxide, calcium carbonate, magnesium carbonate, alumina, mica, wollastonite and talc.
청구항 1에 있어서,
상기 경화제가, 폴리하이드릭 페놀경화제류, 디시안디아마이드, 하이드라이즈드계 경화제, 방향족 산무수물 및 지방족 산무수물류 중에서 선택된 하나 이상인 것을 특징으로 하는 자동차 부품용 발포형 분체도료 조성물.The method according to claim 1,
The curing agent is a foamed powder coating composition for automobile parts, characterized in that at least one selected from polyhydric phenol hardeners, dicyandiamide, hydride-based curing agent, aromatic acid anhydride and aliphatic acid anhydrides.
KR1020110026737A 2011-03-25 2011-03-25 Foam type powder coating composition for parts of vehicle KR101297779B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110026737A KR101297779B1 (en) 2011-03-25 2011-03-25 Foam type powder coating composition for parts of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110026737A KR101297779B1 (en) 2011-03-25 2011-03-25 Foam type powder coating composition for parts of vehicle

Publications (2)

Publication Number Publication Date
KR20120109697A true KR20120109697A (en) 2012-10-09
KR101297779B1 KR101297779B1 (en) 2013-08-20

Family

ID=47280778

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110026737A KR101297779B1 (en) 2011-03-25 2011-03-25 Foam type powder coating composition for parts of vehicle

Country Status (1)

Country Link
KR (1) KR101297779B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105585938A (en) * 2015-11-24 2016-05-18 海安南京大学高新技术研究院 Self-repair powder coating applicable to aluminum material
CN112812655A (en) * 2021-01-05 2021-05-18 海隆石油产品技术服务（上海）有限公司 Composition of high hydrogen sulfide resistance powder coating for oil pipe
CN113881294A (en) * 2021-08-31 2022-01-04 烟台正海磁性材料股份有限公司 Coating, neodymium iron boron magnet and preparation method and application thereof
KR20230158737A (en) * 2022-05-12 2023-11-21 주식회사 케이씨씨 Dual coating system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230150064A (en) * 2022-04-21 2023-10-30 주식회사 케이씨씨 Powder coating composition

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617591B1 (en) * 2003-12-30 2006-09-01 주식회사 케이씨씨 Thermosetting Epoxy powder coating composition for dual top coating and its coating system
KR101163787B1 (en) * 2005-12-29 2012-07-09 주식회사 케이씨씨 Excellent corrosion resistance powder coating composition for an automobiles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105585938A (en) * 2015-11-24 2016-05-18 海安南京大学高新技术研究院 Self-repair powder coating applicable to aluminum material
CN112812655A (en) * 2021-01-05 2021-05-18 海隆石油产品技术服务（上海）有限公司 Composition of high hydrogen sulfide resistance powder coating for oil pipe
CN113881294A (en) * 2021-08-31 2022-01-04 烟台正海磁性材料股份有限公司 Coating, neodymium iron boron magnet and preparation method and application thereof
KR20230158737A (en) * 2022-05-12 2023-11-21 주식회사 케이씨씨 Dual coating system

Also Published As

Publication number Publication date
KR101297779B1 (en) 2013-08-20

Similar Documents

Publication Publication Date Title
JP5420212B2 (en) Thin chip powder top coat for steel
CN101864238B (en) Powder corrosion and chip-resistant coating
KR101297779B1 (en) Foam type powder coating composition for parts of vehicle
KR102079384B1 (en) Flame-retardant paint composition
US8137804B2 (en) Epoxy-based electrocoating composition
KR101426188B1 (en) Substantially defect-free sound and vibration damping coating
EP1618156B1 (en) Cathodic corrosion protection powder coating composition and method
CN108431153B (en) Polyurethane coating composition
US11851577B2 (en) Direct-to-metal coating composition
CN103980804A (en) Method for forming dual-layer coating
KR101163787B1 (en) Excellent corrosion resistance powder coating composition for an automobiles
KR20210005140A (en) Surface-modified aluminum oxide hydroxide particles as rheology additives in aqueous coating compositions
US20230203335A1 (en) Water-based anticorrosive coating composition
CA3066860A1 (en) One-component coating composition and substrates coated with the same
CN115466557A (en) Anti-rust and anti-corrosion primer and preparation method thereof
KR101629712B1 (en) Primer composition and manufacturing method for coated articles
US7332069B2 (en) Cathodic corrosion protection powder coating composition and method
KR101928148B1 (en) Paint composition
KR102635157B1 (en) Dual coating system
KR102644036B1 (en) Ceramic metal anticorrosive composition with enhanced mechanical strength and construction method of anticorrosive coating layer
KR20200016137A (en) Energy saving eco-friendly heat shield coating composition comprising nano-hollow sphere ceramic
JP2003238933A (en) Adhesive composition for automobile interior trim
KR20230150064A (en) Powder coating composition
JPH11148050A (en) Coating composition, coating finishing and coated article
KR20040069647A (en) Isocyanate modified carboxy-polyester resin, and chipping-resistant powder coating composition for automobile containing thereof

Legal Events

Date Code Title Description
A201 Request for examination
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)
GRNT Written decision to grant
G170 Publication of correction
FPAY Annual fee payment

Payment date: 20160804

Year of fee payment: 6