2-Hydroxyethylmethacrylate가 도입된 로진 변성 불포화 폴리에스테르의 합성과 그 특성

강두환; 윤동국; 권동건

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.3, 450-455, May, 1999

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2-Hydroxyethylmethacrylate가 도입된 로진 변성 불포화 폴리에스테르의 합성과 그 특성

Synthesis and Characteristics of Unsaturated Polyester Modified with Rosin Containing 2-Hydroxyethylmethacrylate

강두환, 윤동국, 권동건

초록

말레산 무수물 (MA)과 diethylene glycol (DEG)을 반응시켜 불포화기가 도입된 에스테르형 디올 (UD)을 제조한 다음 이를 로진과 MA를 반응시켜 얻은 rosin maleic anhydride adduct (RMA) 또는 2-hydroxyethylmethacrylate (HEMA)가 도입된 RMA (RMA-HEMA)와 각각 반응시켜 rosin (UPMR) 및 RMA-HEMA 변성 불포화 폴리에스테르 (UPMRH)를 각각 제조하였다. 이를 가교제로 스티렌 또는 메틸메타아크릴레이트 (MMA)로 가교시킨 후 내용매성과 이장강도 및 접착특성을 측정하였다. 가교제로 스티렌을 사용하는 경우가 MMA를 사용한 것에 비해 내용매성과 인장강도가 증가하였다. 또한 UPMRH의 경우가 UPMR에 비해 내용매성이 우수하였고 인장강도도 증가되었다. 한편 T-peel test로 측정한 계면접착력에 있어서 UPMR의 경우 가교제로 스티렌 및 MMA를 사용하는 경우는 1.61과 3.02 MPa인 반면 UPMRH의 경우는 2.32와 3.89 MPa로 HEMA가 도입됨에 따라 계면접착력이 증가되었다.

Unsaturated diol (UD) was prepared from the esterification of maleic anhydride with diethylene glycol (DEG). Unsaturated polyesters modified with rosin (UPMR) or with rosin maleic anhydride adduct (RMA) from 2-hydroxyethylmethacrylate (HEMA) and rosin (UPMRH) were prepared by the reaction of UD with RMA or RMA-HEMA. After crosslinking of UPMR and UPMRH with styrene and methylmethacrylate (MMA), respectively, solvent resistance, tensile strength, and adhesion property of the resins were measured. UPMR crosslinked with styrene or MMA shows an excellent resistance to water and acid. Solvents resistance and tensile strength of UPMR using styrene as crosslinking agent were increased compared with those of UPMR using MMA as crosslinking agent. UPMRH showed better solvents resistance and tensile strength than UPMR. Adhesion strengths of UPMR crosslinked with styrene and MMR were 1.61 and 3.02 MPa, and those of UPMRH were 2.32 and 3.89 MPa, respectively.

Keywords:Rosin;Unsaturated Polyester;Adhesion

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