발포제에 따른 산무수물계 에폭시 폼의 압축강도 및 포밍특성 분석
Investigation of Compressive Strength and Foaming Characteristics of Acid Anhydride Epoxy Foam by Foaming Agent
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초록
구조용 폼의 용도는 난연, 단열 기능이외에 구조적인 목적으로 공극부위를 충진시키는 용도로 사용되고있다. 경량 소재 개발을 위해 CFRP와 구조용 폼이 이용되고 있으며, PUR, PIR, PVC, PET와 같은 대표적인 폼이 존재한다. 본 연구에서는 구조용 폼의 특성 중 강도 강화를 위한 목적으로 에폭시 폼을 개발하고자 하였다. 에폭시조성 중 산무수물계 경화제는 기존의 폴리올과 반응을 하기 때문에 산무수물계 에폭시 수지에 발포제를 이용할경우 폼이 형성되는지, 형성된다면, 압축특성과 포밍 형태를 관하는 연구를 진행하였다. 에폭시 폼을 형성시키기위한 발포제의 종류에 따른 영향 및 발포재의 농도에 따라 변화되는 폼밍의 결과 차이를 분석하였으며, 산무수물계 수지의 조성차이에 따른 폼의 압축강도를 평가하였다. 궁극적으로 에폭시 폼을 최적의 발포제 선정으로 구조적 강도가 높은 폼을 형성시킬 수 있음을 확인하였으며, 기존의 구조용 폼 소재에 비해 높은 압축강도 및 비압축강도를 가짐을 확인하였다.
Abstract
Polymer foams were used to fill the void in the structure in addition to flame retardant and heat insulation. Polymer foams such as polyurethane, polyisocyanurate, poly(vinyl chloride), polyethylene terephthalate were used to weight lighting materials. In this study, epoxy foam was used to improve mechanical properties of polymer foam. Acid anhydride type hardener reacts with polyol. Using this phenomenon, if blowing agent was added into epoxy resin using acid anhydride type hardener, formation and compressive properties of epoxy foam was studied. Formation of polymer foam was compared with type of blowing agent and concentration of blowing agent via compressive test. As these results, optimized condition of epoxy foam was found and epoxy foam had better compressive property than other polymer foam.
참고문헌 (21)
- 최원호, "Design and Fabrication of Stratified Microwave Absorbing Structure Consisted of Glass", Epoxy – Resistive Sheet – Foam, 2014, pp.27(6), 225~230[DOI]
- 김용수, "평직 탄소섬유 복합재료-고분자 포움 샌드위치 구조의 성형 중 미소변형에 관한 연구", Composites Research, 17(6), pp.28~36 (2004), 한국복합재료학회
- Gianchandani, P.K., "SiC Foam Sandwich Structures Obtained by Mo-wrap Joining", Materials Letters, 221, pp.240~243 (2018)[DOI]
- Xie, Y., "Effects of Bentonite Slurry on Air-void Structure and Properties of Foamed Concrete", Construction and Building Materials, 179, pp.207~219 (2018)[DOI]
- Prociak, A., "Effect of Biopolyols with Different Chemical Structures on Foaming of Polyurethane Systems and Foam Properties", Industrial Crops & Products, 120, pp.262~270 (2018)[DOI]
- Mostafa, A., "Effect of Shear Keys Diameter on the Shear Performance of Composite Sandwich Panel with PVC and PU Foam Core: FE Study", Composite Structures, 102, pp.90~100 (2013)[DOI]
- Bedell, M., "A Case for Closed-loop Recycling of Post-consumer PET for Automotive Foams", Wast Management, 71, pp.97~108 (2018)[DOI]
- Aliha, M.R.M., "Experimental and Theoretical Fracture Toughness Investigation of PUR Foams under Mixed Mode I+III Loading", Polymer Testing, 67, pp.75~83 (2018)[DOI]
- Wang, Y.C., "Experimental and Numerical Study of Temperature Developments in PIR Core Sandwich Panels with Joint", Fire Safety Journal, 90, pp.1~14 (2017)[DOI]
- Hu, Y., "Effect of the Large Cells on the Fatigue Properties of Closed-cell Aluminum Alloy Foam", Composite Structures, 200, pp.59~68 (2018)[DOI]
- Duarte, I., "Crush Performance of Multifunctional Hybrid Foams Based on an Aluminium Alloy Open-cell Foam Skeleton", Polymer Testing, 67, pp.246~256 (2018)[DOI]
- Shunmugasamy, V.C., "Aluminum Foam Sandwich with Density-graded Open-cell Core: Compressive and Flexural Response", Materials Science & Engineering A, 731, pp.220~230 (2018)[DOI]
- Hu, D., "Microcellular Foaming of Polysulfones in Supercritical <TEX>$CO_2$<", TEX> and the Effect of Co-blowing Agent, 2018, pp.18, 30134~30137
- Nistor, A., "Effect of Organic Co-blowing Agents on the Morphology of <TEX>$CO_2$<", TEX> Blown Microcellular Polystyrene Foams, 2017, pp.17, 30294~30302
- Long, Y., "Polyurethane Foaming with Engineered <TEX>$CO_2$<", TEX>-releasing Nanoparticles: From the Thickening Effect to the Industrial Applications of the Blowing Agents, 2018, pp.143, 69~78
- Wu, H., "A New Core-back Foam Injection Molding Method with Chemical Blowing Agents", Materials and Design, 144, pp.331~342 (2018)[DOI]
- Long, Y., "Carbon Dioxide Adduct from Polypropylene Glycol Grafted Polyethyleneimine as a Climate-friendly Blowing Agent for Polyurethane Foams", Polymer, 55, pp.6494~6503 (2014)[DOI]
- Mohamed Aqhil Ahmed, M.A., "Evaluation of Apparent Shear Modulus of Multilayer PUF Cored Sandwich Beams Using Novel Experimental Technique", Materials Today: Proceedings, 5, pp.429~435 (2018)[DOI]
- Birman, V., "Wrinkling of Functionally Graded Sandwich Structures Subject to Biaxial and In-plane Shear Loads", Journal of Applied Mechanics, 84 (2017)
- Stefani, P.M., "Microcellulose Fibers-filled Epoxy Foams", Journal of Applied Polymer Science, 109, pp.1009~1013 (2008)[DOI]
- Zhong, F., "Microstructure and Properties of Epoxy Foams Prepared by Microwave", Journal of Applied Polymer Science, 112, pp.3543~3547 (2009)[DOI]