Elastomers and Composites
- 제36권1호
- /
- Pages.52-60
- /
- 2001
- /
- 2092-9676(pISSN)
- /
- 2288-7725(eISSN)
Ethylene Vinyl Acetate Copolymer 발포체의 발포특성 및 물리적 특성
Foaming Characteristics and Physical Properties of Ethylene Vinyl Acetate Copolymer Foams
- Kim, Jin-Tae (Department of Chemical Engineering, Pusan Motional University) ;
- Son, Woo-Jung (Department of Chemical Engineering, Pusan Motional University) ;
- Ahn, Byung-Hyun (Division of Materials Engineering, Pukyong National University) ;
- Kim, Won-Ho (Department of Chemical Engineering, Pusan Motional University)
- 발행 : 2001.03.31
초록
발포체의 물성은 발포체의 밀도, 사용된 폴리머의 기계적 물성과 열린 셀(open cell) 함량, 셀 크기, 셀 크기 분포, 셀 형태, 격벽의 두께 등을 포함하는 셀 구조에 의존하며 이러한 발포체의 밀도는 사용된 폴리머의 종류와 가교제의 농도, 발포제의 농도 그리고 가공 기술 및가공 조건 같은 다양한 원료물질과 가교조건에 영향을 받는다. Ethylene vinyl acetate coplymer (EVA) 발포체는 가교 발포체로서 가교속도와 발포제의 분해속도에 의해 발포특성에 영향을 받으며 이에 따라 발포체 물성에도 영향을 미친다. 본 연구에서는 가공 온도인
Physical properties of foams depend on the density of foams, Physical properties of base polymers, open ceil contents, and cell structures including the size, size distribution, shape of ceil and the thickness of membrane and strut. The density of foam is affected by raw materials, concentration oi crosslinking agent and blowing agent and process parameters such as processing technique and condition. Ethylene vinyl acetate copolymer(EVA) foam is a crosslinked cellular material. The foaming characteristics and physical properties of EVA foam are affected by decomposition rate of blowing agent. In this study, the decomposition rate of blowing agent and crosslinking rate, foaming characteristics and physical properties of foams were evaluated. The slow decomposition rate of blowing agent results in low density foam, good shock absorption property and uniform cell size distribution compared to the high decomposition rate of blowing agent.