Development of Composites Sandwich Structures Using a Core Cork  

作　　者：D.Regacon A.Garay 

机构地区：[1]UFN,University Franciscana Santa Maria,Santa Maria,RS 97015-001 Brazil [2]PPGEM,Federal University of Rio Grande do Sul(UFRGS),Porto Alegre,RS 91501-970,Brazil

出　　处：《材料科学与工程（中英文A版）》2018年第3期100-107,共8页Journal of Materials Science and Engineering A

摘　　要：Sandwich structures are comprised of two external faces/skins(usually made of synthetic fiber/resin)and a core between them,being lightweight and with high stiffness.The employment of composite materials such as engineering materials has achieved more space in various segments of the industry,due to the following properties found:low density,stiffness,resistance to abrasion,impact and corrosion developed along the technological advancement of materials.This study aimed to develop a composite structure sandwich with cork core using in the face resin unsaturated polyester and glass fiber material,in order to obtain a final material with improved mechanical and physical properties compared to a conventional composite,without core.The samples were obtained by pressing process for different volume percentage of glass fiber in order to evaluate the influence of this parameter on the behavior of the material.The different samples were mechanically analyzed using the tests by tensile,bending and hardness,revealing high efficiency,except for the bending test in which the sandwich composite showed lower values compared to the composite standard.It was also performed to test water absorption,thermal and acoustic insulation test achieving satisfactory results and proving the effectiveness of cork in the search for materials with insulating characteristics,thus enabling the use of cork as a raw material for this class of materials contributing to sustainability and helping to generate values and innovation.In addition,it functions as a great thermal and acoustic insulation.

关 键 词：Composite SANDWICH CORK CORE mechanical and PHYSICAL PROPERTIES thermal and ACOUSTIC PROPERTIES 

分 类 号：TB[一般工业技术]