Sang-In Lee*, ** , Hae-chan Cheong**, Jung-Woon Park**, Minji Kim*, and Hyun-jong Paik*,†
*Department of Polymer Science and Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Korea
**LX MMA R&D Center, 188, Munji-ro, Yuseong-gu, Daejeon 34122, Korea
*부산대학교 고분자공학과, **LX MMA 기술연구소
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For investigating the gloss control of poly(methyl methacrylate) (PMMA)/poly(acrylonitrile-co-butadiene-co-styrene) (ABS) co-extrusion sheet by cross-linked PMMA particles, six PMMA mixture samples were prepared through an extrusion process using cross-linked PMMA particles with two different sizes (13.2 and 17.4 μm) in three different contents (20, 22.5, and 25 wt%). PMMA/ABS co-extrusion sheets (3 mm) were manufactured using PMMA compounding mixtures and white ABS; the thickness of the upper PMMA layer was about 100 um. The PMMA/ABS co-extrusion sheets had super matte surface with low gloss (less than 7 GU, measuring angle 60°). We investigated the effects of size and contents of cross-linked PMMA particles on the gloss and roughness of the surface of super matte PMMA/ABS co-extrusion sheet by using a confocal laser scanning microscope (CLSM), contact roughness tester and surface glossmeter.
폴리메틸메타크릴레이트(PMMA) 가교 입자를 이용하여 PMMA 컴퍼지트 제품 표면의 광택을 조절하는 실험을 진행하였다. 단분산 입도를 가지는 2개의 다른 사이즈(13.2, 17.4 μm)의 가교된 PMMA 입자를 3가지 조성(20, 22.5, 25 wt%)으로 압출 컴파운딩 공정을 통해 PMMA 혼합물 샘플을 제작하였다. 컴파운딩된 PMMA 혼합물을 화이트 불투명 아크릴로나이트릴·뷰타다이엔·스타이렌 수지(ABS)와 함께, 상층 PMMA 층의 두께는 약 100 μm이며 전체 공압출 시트의 두께는 3 mm인 6종의 PMMA/ABS 공압출 시트를 제작하였다. 이렇게 제작된 PMMA/ABS 공압출 시트는 초저광택(7GU 이하, 측정각 60°)을 가지는 슈퍼매트 표면이 구현되었으며, 본 연구에서는 공초점 레이저 주사 현미경(CLSM)과 접촉 거칠기 시험기 및 광택 측정기를 사용하여 가교 PMMA 입자의 크기와 함량에 따른 PMMA/ABS 공압출 시트 표면의 거칠기와 광택 변화를 조사하였다.
Keywords: super matte poly(methyl methacrylate), cross-linked poly(methyl methacrylate), poly(methyl methacrylate)/poly(acrylonitrile-co-butadiene-co-styrene) co-extrusion sheet, gloss, surface roughness.
2023; 47(1): 72-78
Published online Jan 25, 2023
Department of Polymer Science and Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Korea