120th General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Exhibition Hall 2+3
Time 10월 20일 (금요일) 13:00~14:30
Code POLY.P-42
Subject Synthesis of thermal expansion capsules with high thermal stability using suspension polymerization
Authors Jae Il So, Hong-Gyu Seong1, JiHyeong Ryu2, Sang Eun Shim*
Department of Chemical Engineering, Inha University, Korea
1Chemistry & Chemical Engineering, Inha University, Korea
2chemical engineering, Inha University, Korea
Abstract Recently, there have been requirements for greater advances in the weight reduction of automotive parts for mileage improvement. In this respect, Thermal Expandable Microsphere (TEM) is a suitable material. They have a core and shell structure. A low-boiling-point hydrocarbon liquid is encapsulated by a polymeric shell. Mixing the microcapsules with the thermoplastic polymer and letting them thermally expand in a polymer can make polymer foams. When the microcapsules are heated to 80~180 oC, they are expanded to 50–100 times greater than their initial volume, In this study, thermally expandable microspheres are synthesized with acrylonitrile(AN) and cyclohexyl methacrylate(CHMA). CHMA is monomer that has high glass transition temperature. So we expected core-shell is expanded on high temperature. Iso-octane and N-octane is used the blowing agent. Suspension polymerization of AN and CHMA initiated by Azobisisobutyronitrile(AIBN). Butanedioldimethacrylate(BDDMA) is used as crosslinker. PVP are used as the Stabilizer. Characterization is used by SEM, TGA, Coulter
E-mail 22161671@inha.edu