KR0166950B1 - Process of drainage coating - Google Patents
Process of drainage coating Download PDFInfo
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- KR0166950B1 KR0166950B1 KR1019960033529A KR19960033529A KR0166950B1 KR 0166950 B1 KR0166950 B1 KR 0166950B1 KR 1019960033529 A KR1019960033529 A KR 1019960033529A KR 19960033529 A KR19960033529 A KR 19960033529A KR 0166950 B1 KR0166950 B1 KR 0166950B1
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- silicone rubber
- rubber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
Abstract
이 발명에서 표면처리를 위한 실리콘 고무의 표면수식(modification of surfa ce : 활성화)방법을 포함하는 실리콘 고무의 소수성(이 발명에서 발수성을 포함하는 것으로 한다) 코팅방법 및 소수성 코팅제를 제안하려는 것으로, 실리콘고무의 표면을 플라즈마 에칭으로 활성화 개질시켜 친수성으로 수식된 고무 표면을 얻고 수식된 표면에 프라이머 처리후 소수성 폴리우레탄 코팅제를 코팅하여 내마모성, 인쇄성 및 논스립성(anti skid성)이 뛰어나고 감촉이 좋은 박막을 실리콘고무 표면에 조성하는 것을 특징으로 하는 실리콘고무의 소수성 코팅방법; 및In the present invention, to propose a hydrophobic (which includes water repellency in this invention) coating method and a hydrophobic coating agent of the silicone rubber, including the modification of the surface of the silicone rubber for surface treatment (activation) method, the silicone The surface of rubber is activated and modified by plasma etching to obtain a rubber surface modified with hydrophilicity, and the hydrophobic polyurethane coating is coated on the modified surface with excellent hydro-resistance, printability, and anti skid resistance, and has a good feel. Hydrophobic coating method of silicone rubber, characterized in that to form a silicone rubber surface; And
성분 1 :Component 1:
폴리에스터 폴리올 70-82중량부70-82 parts by weight of polyester polyol
부틸아세테이트 9-22중량부Butyl acetate 9-22 parts by weight
톨루엔 9-22중량부Toluene 9-22 parts by weight
희석제 약간(점도조절)Slightly thinner (viscosity control)
성분 2 :Component 2:
폴리이소시아네이트 18-22중량부18-22 parts by weight of polyisocyanate
에칠아세테이트 2-10중량부Ethyl acetate 2-10 parts by weight
위 성분 1과 성분 2를 혼가하여 얻는 소수성 폴리우레탄 코팅제; 이다.Hydrophobic polyurethane coating agent obtained by mixing the above components 1 and 2; to be.
Description
이 발명에서 표면처리를 위한 실리콘 고무의 표면수식(modification of surface : 활성화)방법을 포함하는 실리콘 고무의 소수성 코팅방법 및 소수성 코팅제를 제안하려는 것이다. 이 발명에서 실리콘 고무(소수성 고무, 불소고무, EPDM) 등을 지칭한다. 이 발명에서 제안되는 소수성 코팅은 고무와의 접착력이 뛰어나고 좋은 감촉을 나타냄을 특징으로 한다.In the present invention, to propose a hydrophobic coating method and a hydrophobic coating agent of the silicone rubber, including a modification of the surface (modification of surface: activation) method of the silicone rubber for the surface treatment. In this invention, silicone rubber (hydrophobic rubber, fluororubber, EPDM) and the like are referred to. The hydrophobic coating proposed in this invention is characterized by excellent adhesion to rubber and good texture.
최근의 통신기기나 산업기계의 조작반은 키 패드 타입에서 플레이트 패널타입(Plat panel type)타입으로 바뀌어 가고 있다. 콘솔패널의 기판으로서 감촉이 좋은 실리콘고무 혹은 기타의 고무등이 사용되고 있다. 조작패널에 사용되는 고무 등의 패널재료는 내마모성, 인쇄성, 논슬립성(anti skid성)등 기계적 성질의 결함을 보완하기 위해 표면에 보호 코팅이 행해지고 있는 것이다. 조작패널의 코팅재로서 불소수지 코팅은 질이 좋은 소수성 표면을 조성할 수는 있으나 가격이 비싸고 접착력이 부족한 문제점을 가진다. 에폭시 코팅의 경우에는 경도가 높아 감촉이 불량하다. 고체 표면에 박막을 형성하는 기술은 반도체 제조공정에서 널리 활용되는 기술이며 접착이나 도장은 옛부터 사용되어 온 범용 기술이다. 코팅기술로서 최신기법이나 범용기술에서 공통으로 요구되는 사양의 하나는 안정이고 강력한 접착력이다. 일반적으로 계면의 접착력이나 부착력은 소재표면의 화학적 물리적 특성에 좌우된다.In recent years, operation panels of communication devices and industrial machines have been changed from keypad type to plate panel type. As a substrate of the console panel, a silicone rubber or other rubber with good feel is used. Panel materials such as rubber used in the operation panel have a protective coating on the surface to compensate for defects in mechanical properties such as wear resistance, printability, and anti skid resistance. As a coating material for the operation panel, the fluororesin coating may form a good hydrophobic surface, but has a problem of high price and insufficient adhesive strength. In the case of epoxy coating, the hardness is high and the feel is poor. The technique of forming a thin film on a solid surface is a technique widely used in a semiconductor manufacturing process, and adhesion or painting is a general technique that has been used for a long time. As a coating technology, one of the specifications commonly required in the state of the art or general purpose technology is stable and strong adhesion. In general, the adhesion or adhesion of an interface depends on the chemical and physical properties of the material surface.
이 발명에서는 소수성 고무의 표면을 친수성으로 개질시켜 고무 표면의 화학적 성질을 활성화시키므로 실리콘 고무의 표면에서 코팅제와의 접착력을 향상시키려는 것이다. 이 발명에서 실리콘 고무의 표면을 친수성으로 활성화시키는 데에 플라즈마 에칭법을 도입한다. 플라즈마 에칭으로 실리콘 고무 표면을 활성화시키고 활성화 표면에 이 발명에서 제안되는 소수성 폴리우레탄 코팅제 박막을 조성한다. 이 발명은 이와같은 과정으로 고무의 표면에 강력하게 부착되는 박막을 조성하는 것이며 조성된 코팅막은 소수성으로서 감촉이 좋고 내마모성을 가지게 되는 것이다.In this invention, the surface of the hydrophobic rubber is modified to be hydrophilic to activate the chemical properties of the rubber surface, thereby improving the adhesion with the coating agent on the surface of the silicone rubber. In this invention, plasma etching is introduced to activate the surface of the silicone rubber hydrophilically. Plasma etching activates the silicon rubber surface and forms a hydrophobic polyurethane coating thin film proposed in this invention on the activation surface. The present invention is to form a thin film that is strongly adhered to the surface of the rubber in such a process, the coating film is hydrophobic, the feel is good and has abrasion resistance.
이 발명에서 실리콘 고무의 표면수식을 행하여 친수성으로 개질하고 활성화된 친수성 고무 표면에 이 발명에서 제안되는 소수성 폴리우레탄 코팅제막을 조성하여 실리콘 고무 표면에 소수성 코팅 피막을 얻는 것이다.In this invention, the surface modification of the silicone rubber is carried out to modify the hydrophilicity and to form the hydrophobic polyurethane coating film proposed in the present invention on the activated hydrophilic rubber surface to obtain a hydrophobic coating film on the silicone rubber surface.
실리콘 고무의 표면수식은 비평형타입의 저온 플라즈마(cleaning system : March사, U.S.A, PX 모델) 알곤(Ar) 가스로 실리콘 고무 패널의 표면을 에칭하여 친수성 표면을 얻는다.The surface formula of the silicone rubber is obtained by etching the surface of the silicone rubber panel with a non-equilibrium low-temperature plasma (Cleaning system: March, U.S.A, PX model) argon (Ar) gas to obtain a hydrophilic surface.
에칭에 사용되는 플라즈마 규격은 다음과 같다.The plasma specifications used for etching are as follows.
[저온 플라즈마][Cold plasma]
라이오 파 : RF 13.56 MHzLion wave: RF 13.56 MHz
Gas : Ar (99.99%)Gas: Ar (99.99%)
진공도 : 750mmTorrVacuum degree: 750mmTorr
Pump : 25cfm, 50/60 HzPump: 25cfm, 50/60 Hz
플라즈마 에칭 메카니즘을 보면, 일반적으로 기체분자에 전기장을 걸 때 기체중에 소량 존재하는 자유전자가 가속되어 속도에너지를 갖는다. 기체분자는 여기 전자의 충돌을 받아 해리되어 여러 가지 화학종(種)을 포함하는 플라즈마 상태를 조성하는 것이다. 수소까스를 예로서 설명하면 식1과 같은 이온해리와 식2와 같이 보다낮은 에너지 상태에서 진행되는 라디칼해리로 나눌 수 있다.In the plasma etching mechanism, generally, when an electric field is applied to a gas molecule, a small amount of free electrons in the gas is accelerated to have a velocity energy. Gas molecules are dissociated under the collision of excitation electrons to form a plasma state containing various chemical species. If hydrogen cutlet is described as an example, it can be divided into ion dissociation as shown in Equation 1 and radical dissociation proceeding at a lower energy state as shown in Equation 2.
H2+ 2eH 2 + 2e
H· + H++ 2eH + H + + 2e
H2+ hr + eH 2 + hr + e
H· + H· + eH + H + e
곧 플라즈마는 전자, 이온, 라디칼 혹은 여기분자등의 화학종(種)을 포함하고 있다. Ar, He, H2기체는 비반응성 가스로서 비반응성 기체가 합성수지 표면에 극성기를 직접 도입하는 것은 아니지만 일반적으로 폴리머 표면에 형성된 라디칼에 계내(係內)에 존재하는 산소등과 반응하여 함산소기를 형성하며 또한 계내의 공기속의 질소와 반응하여 질소기를 형성한다.In other words, plasma contains chemical species such as electrons, ions, radicals, or excitation molecules. Ar, He, and H 2 gases are non-reactive gases, but the non-reactive gases do not directly introduce polar groups on the surface of the resin, but generally react with oxygen, such as oxygen present in the system, to radicals formed on the surface of the polymer. It also forms nitrogen groups by reacting with nitrogen in the air in the system.
이 발명에 사용된 Ar 가스 플라즈마 처리시 실리콘 표면의 개질은 다음과 같다.The modification of the silicon surface during the Ar gas plasma treatment used in this invention is as follows.
. 함(含) 산소기가 도입된다.. An oxygen group is introduced.
. 질소원자가 표면에 나타난다.. Nitrogen atoms appear on the surface.
. 가교구조(Crosslinking)가 형성된다.. Crosslinking is formed.
상기 세가지 표면 반응으로 실리콘의 표면은 소수화에서 친수화되므로 폴리우레탄 코팅제의 접착이 강력하고 안전하게 일어난다.With the three surface reactions, the surface of the silicon is hydrophilized in hydrophobic so that the adhesion of the polyurethane coating occurs strongly and safely.
[실시예 1]Example 1
이 발명의 소수성 코팅처리를 아래와 같이 플라즈마 처리, 프라이머 처리, 코팅제 처리로 나누어 행하였다.The hydrophobic coating treatment of this invention was divided into plasma treatment, primer treatment, and coating treatment as follows.
① 플라즈마 처리조건① Plasma treatment condition
저온플라즈마 Frequency : RF(라디오파) 13.56 MHzLow Temperature Plasma Frequency: RF (Radio Wave) 13.56 MHz
Gas : Ar(99.99%)Gas: Ar (99.99%)
진공도 : 570mmTorrVacuum degree: 570mmTorr
Gas flow : 25cfmGas flow: 25cfm
② 프라이머 처리② primer treatment
(Amino terminated silan coupling agant 처리)(Amino terminated silan coupling agant treatment)
A-1120 * 100중량부A-1120 * 100 parts by weight
에칠알콜 10중량부Ethyl alcohol 10 parts by weight
* A-1120 : H2NOC2H4NHC3H6Si(OCH3)3 * A-1120: H 2 NOC 2 H 4 NHC 3 H 6 Si (OCH 3 ) 3
③ 폴리우레탄 코팅제 처리(박막형성)③ Polyurethane coating agent treatment (thin film formation)
성분 1 :Component 1:
폴리에스터 폴리올 * 70-80중량부Polyester polyol * 70-80 parts by weight
에칠아세테이트 9-22중량부Ethyl acetate 9-22 parts by weight
톨루엔 9-22중량부Toluene 9-22 parts by weight
희석제 약간(점도조절)Slightly thinner (viscosity control)
* : OH 값 48-52*: OH value 48-52
성분 2 :Component 2:
폴리이소시아네이트 ** 18-22중량부Polyisocyanate ** 18-22 parts by weight
에칠아세테이트 2-10중량부Ethyl acetate 2-10 parts by weight
** : NCO 15.5% 방향족 아소시아네이트**: NCO 15.5% aromatic isocyanate
이 실시예에서 얻은 박막의 물성은 다음과 같다.The physical properties of the thin film obtained in this example are as follows.
. 박막의 Wettability : 45 dyne/cm 이상 --- 시험방법 JIS K6768. Wettability of thin film: 45 dyne / cm or more --- Test method JIS K6768
. 크로스 카트 : 박리없음 --- 시험방법 JIS K5400. Cross Cart: No Peel --- Test Method JIS K5400
[실시예 2]Example 2
이 실시예는 폴리우레탄 코팅시의 황변(발색)을 방지하기 위한 배합이다.This embodiment is a formulation for preventing yellowing (color development) during polyurethane coating.
① 플라즈마 처리① plasma treatment
실시예 1과 같음Same as Example 1
② 프라이머 처리② primer treatment
실시예 1과 같음Same as Example 1
③ 폴리우레탄코팅제의 처리(박막형성)③ Treatment of polyurethane coating agent (thin film formation)
성분 1 :Component 1:
폴리에스터 폴리올 * 70-82중량부Polyester polyol * 70-82 parts by weight
부틸아세테이트 9-22중량부Butyl acetate 9-22 parts by weight
톨루엔 9-22중량부Toluene 9-22 parts by weight
희석제 약간(점도조절)Slightly thinner (viscosity control)
* : OH Value 48-52*: OH Value 48-52
성분 2 :Component 2:
폴리이소시아네이트 ** 18-22중량부Polyisocyanate ** 18-22 parts by weight
에칠아세테이트 2-10중량부Ethyl acetate 2-10 parts by weight
** : NCO 15.5% 지방족 아소시아네이트(HDI)**: NCO 15.5% aliphatic isocyanate (HDI)
이 실시예에서 얻은 박막의 물성은 다음과 같다.The physical properties of the thin film obtained in this example are as follows.
. 박막의 Wettability : 45 dyne/cm 이상 --- 시험방법 JIS K6768. Wettability of thin film: 45 dyne / cm or more --- Test method JIS K6768
. 크로스 카트 시험 : 박리없음 --- 시험방법 JIS K5400. Cross cart test: No peeling --- Test method JIS K5400
상술한 바와같이 이 발명에서는 소수성 고무의 표면을 활성화 친수성 표면으로 개질시키므로 실리콘 고무의 표면 접착력이 강력한 접착력으로 개선되었다. 이 발명에서 소수성 고무의 표면을 친수성으로 활성화시키는 데에 플라즈마 에칭법을 이용하였다. 플라즈마 에칭법으로 활성화시킨 표면에 이 발명에서 제안되는 소수성 폴리우레탄 코팅제 박막이 안정하게 조성되므로 고무패널 표면에 감촉이 좋고 내마모성인 소수성 표면을 얻게 된 것이다. 또한 실시예 2에서 폴리우레탄 코팅의 황변이 방지되었다.As described above, in this invention, since the surface of the hydrophobic rubber is modified to the activated hydrophilic surface, the surface adhesion of the silicone rubber is improved to the strong adhesion. In this invention, plasma etching was used to activate the surface of the hydrophobic rubber hydrophilically. Since the hydrophobic polyurethane coating thin film proposed in the present invention is stably formed on the surface activated by the plasma etching method, a hydrophobic surface having good feel and abrasion resistance is obtained on the rubber panel surface. Also in Example 2 yellowing of the polyurethane coating was prevented.
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| KR1019960033529A KR0166950B1 (en) | 1996-08-13 | 1996-08-13 | Process of drainage coating |
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| KR1019960033529A KR0166950B1 (en) | 1996-08-13 | 1996-08-13 | Process of drainage coating |
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| KR0166950B1 true KR0166950B1 (en) | 1999-01-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100385486B1 (en) * | 2000-08-04 | 2003-05-27 | 주식회사 피앤아이 | the method for changing quality of surface for water-release-layer coating of polymer |
| KR100776970B1 (en) * | 2006-09-05 | 2007-11-21 | 한국기계연구원 | A method of ultra water repellent surface formed by a plasma treatment |
-
1996
- 1996-08-13 KR KR1019960033529A patent/KR0166950B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100385486B1 (en) * | 2000-08-04 | 2003-05-27 | 주식회사 피앤아이 | the method for changing quality of surface for water-release-layer coating of polymer |
| KR100776970B1 (en) * | 2006-09-05 | 2007-11-21 | 한국기계연구원 | A method of ultra water repellent surface formed by a plasma treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960033562A (en) | 1996-10-22 |
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