[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29, No. 6, pp.497-502

ISSN: 2508-5093 (Print) 2508-5107 (Online)

Print publication date 15 Dec 2020

Received 07 Aug 2020 Revised 04 Nov 2020 Accepted 10 Nov 2020

DOI: https://doi.org/10.7735/ksmte.2020.29.6.497

전자빔 조사를 통한 고분자 표면 특성변화

최수현^a^{, †} ; 허성보^b^{, †} ; 최재욱^a ; 장진규^a ; 김선경^c ; 최동혁^c ; 손동일^a^{, c} ; 김대일^a^{, *}

Property Change of Polymer Coated Surface by Electron Beam Irradiation

Su-Hyeon Choe^a^{, †} ; Sung-bo Heo^b^{, †} ; Jea-Wook Choi^a ; Jin-Kyu Jang^a ; Sun-Kyung Kim^c ; Dong-Hyuk Choi^c ; Dong-Il Son^a^{, c} ; Daeil Kim^a^{, *}

aSchool of Materials Science and Engineering, University of Ulsan
bAdvanced Surface Coating & Processing R&D Group, Korea Institute of Industrial Technology
cDepartment of Design, KBI Dongkook Ind. Co., Ltd.

Correspondence to: ^*Tel: +82-52-712-8066 E-mail address: dkim84@ulsan.ac.kr (Daeil Kim). ^† These authors equally contributed to this work.

Abstract

Recently, polymer surface modification has been conducted to enhance function and properties. In this study, the effect of electron beam irradiation on surface properties, such as wettability, chemical bonding state, surface roughness, hardness, critical load, and friction coefficient, of polymer coating was investigated. The polymer coating was bombarded with an intense electron beam under incident energies of 300, 600, and 900 eV for 5 min. The electron beam irradiation results showed that the contact angle was reduced as the surface converted to hydrophilic due to the formation of the carboxyl (-COOH) group. In addition, surface hardness and critical load was improved by increasing the crosslink in the polymer by electron beam irradiation.

Keywords:

Polymer, Electron beam irradiation, Wettability, Binding energy, Root mean square

Acknowledgments

본 연구는 2020년도 국가혁신클러스터 R&D 사업 “금형 코팅 기술을 적용한 생산성 향상 하드타입 크래시패드 개발” 지원을 받아 수행된 연구임(P0006666).

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Su-Hyeon Choe

Graduate Student in the School of Materials Science and Engineering, University of Ulsan.His research interest is electron beam irradiation and PVD.

E-mail: tngus2023@ulsan.ac.kr

Sung-bo Heo

Researcher in the Dongnam Division, Korea Institute of Industrial Technology.His research interest is PVD and PACVD coatings.

E-mail: hsb85@kitech.re.kr

Jea-Wook Choi

Undergraduate Student in the School of Materials Science and Engineering, University of Ulsan.His research interest is electron beam irradiation and flexible TCO thin films.

E-mail: znfgn8@naver.com

Jin-Kyu Jang

Undergraduate Student in the School of Materials Science and Engineering, University of Ulsan.His research interest is surface modification and TCO thin films.

E-mail: asf724@naver.com

Sun-Kyung Kim

General Manager in the Department of Design at KBI Dongkook Ind. Co., Ltd.His research interest is injection molding.

E-mail: ksk@dkdsn.com

Dong-Hyuk Choi

General Manager in the Department of Design at KBI Dongkook Ind. Co., Ltd.His research interest is component design.

E-mail: cdh@dkdsn.com

Dong-Il Son

Director at KBI Dongkook Ind. Co., Ltd.His research interest is manufacturing process.

E-mail: sdi@dkdsn.com

Daeil Kim

Professor in the School of Materials Science and Engineering, University of Ulsan.His research interest is PVD and TCO thin films.

E-mail: dkim84@ulsan.ac.kr