Interaction effect between filling particles and matrix resin on mechanical properties of composite

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420013
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Adachi Tadaharu 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (20184187)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: エポキシ樹脂 / 粒子充填複合材料 / シリカ粒子 / 力学的特性 / 架橋密度 / ナノ粒子 / 強度 / 破壊靭性値

Outline of Final Research Achievements

Mechanical properties of epoxy composites filled with nano-silica particles with different crosslinking densities were experimentally studied to clarify the interaction effects between nano-particles and the network structure in matrix resins on the properties. The composites were cured non-stoichiometrically to manufacture specimens having different network structures. The elastic moduli of the composites were dependent on only the volume fraction of the particles. Filling the nano-silica particles was clarified to improve the bending strength and fracture toughness of the composites with a fine network structure. However the particles acted as defects, reducing the mechanical properties of the composites with rough network structures.

Free Research Field

材料力学，材料工学，高分子系複合材料の力学的特性，衝撃工学