Elastomers and Composites
- Volume 35 Issue 2
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- Pages.115-121
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- 2000
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- 2092-9676(pISSN)
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- 2288-7725(eISSN)
Study on Rear Door Fixed Glass Weather-strip for Automobiles Using EPDM/Polypropylene Blend (I)
자동차용 Rear Door Fixed Glass Weather-strip 성형을 위한 EPDM과 Polypropylene의 Blend에 관한 연구 (I)
- Park, Jong-Yun (Department of Polymer Science and Engineering, Gyeongsang National University, Research Institute of Industrial Technology) ;
- Hwang, Sung-Hyuk (Department of Polymer Science and Engineering, Gyeongsang National University, Research Institute of Industrial Technology) ;
- Kim, Jin-Kuk (Department of Polymer Science and Engineering, Gyeongsang National University, Research Institute of Industrial Technology)
- Published : 2000.06.30
Abstract
In comparison with thermosetting rubber, thermoplastic elastomer (TPE) has various advantages such as simple processing, short cycle time and recycling of scrap. These advantages can lead to development of the high value-added rubber products due to reduction of the waste material, manufacturing cost and the defected product. This article involves a dynamic vulcanization method for EPDM/polypropylene blend, and the manufacturing of a fixed glass weather-strip by glass insert molding method using the blend. In order to investigate mechanical properties of the product, tensile strength, elongation, hardness and specific gravity were measured. Also morphological study was carried out using SEM. Developments of an efficient system of production and automatic process by molding of TPE and glass simultaneously are expected.
일반적인 고무가공 공정에 비해 열가소성 고무 (Thermoplastic Elastomer: TPE)의 가공은 재료가 공공정의 단축, 생산공정의 간소화, scrap의 재활용 둥의 장점과 이에 따른 불량률 저하에 의한 폐기물감소, 제조원가 감소 및 부가가치성을 높일 수 있어 국제 경쟁력 확보에 유리하다. 본 연구에서는 Ethylene propylene diene monomer (EPDM)고무와 polypropylene을 사용하여 동적가교 (dynamic vulcanization)에 의해 블렌드를 제조한 후, glass insert molding법을 이용하여 fixed glass weather-strip을 성형하였다. 성형품의 기계적인 특성을 조사하기 위하여 인장강도, 신장율. 경도, 비중을 측정하였으며, mixing 상태는 SEM 사진을 통하여 관찰하였다. TPE molding 부분과 glass를 일체 성형하므로써 공정의 효율성에 대한 기여 및 생산 자동화에 유리할 것으로 기대한다.
Keywords
- thermoplastic elastomer;
- simple processing;
- dynamic vulcanization;
- fixed glass weather-strip;
- glass insert molding