Fracture energy and mechanical properties of toughened epoxy resin with eggshell powder

被引:3
作者
Fong, Collin [1 ]
Sugiman, Sugiman [2 ]
Chin, Desmond [3 ]
Ahmad, Hilton [1 ,4 ]
机构
[1] Univ Tun Hussein Onn Malaysia, Fac Civil Engn & Built Environm, Dept Civil Engn, Batu Pahat 86400, Johor Darul Tak, Malaysia
[2] Univ Mataram, Fac Engn, Dept Mech Engn, Mataram, Indonesia
[3] Univ Technol Malaysia, Fac Mech Engn, Dept Aerosp Automot & Ocean Engn, Johor Baharu 81310, Malaysia
[4] Univ Tun Hussein Onn Malaysia, Dept Civil Engn, Batu Pahat, Johor Darul Tak, Malaysia
关键词
Eggshell powder; fracture energy; mechanical properties; toughened epoxy; filler; FILLER;
D O I
10.1080/01694243.2023.2283977
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Eggshells are daily food waste disposed of in landfills, producing environmental issues and an unpleasant odour. Eggshells powder may be suitably applied as a filler in epoxy resins to improve their mechanical properties. The material properties and fracture energy of toughened epoxy with eggshell powder (TEEP) were measured and investigated. Dog-bone specimens were fabricated to investigate the mechanical properties of TEEP (i.e. elastic modulus, Poisson's ratios and tensile strength) and tested under quasi-static tensile loading. Double Cantilever Beam (DCB) and End-Notched Flexure (ENF) tests were used to determine the mode I and Mode II fracture energies of TEEP specimens, respectively. For this purpose, oven-dried eggshells were crushed into particles size of 100 mu m. The volume fraction of eggshell powder as filler in TEEP is designated as 0%, 2.5%, 5%, and 10%. The epoxy resin system was made by mixing EPIKOTE Resin 828 and Hardener 651 with a mixing ratio of 5:2 by weight. The results showed that the tensile strength, elastic modulus, fracture energy in Mode I and Mode II were optimum at TEEP 5% with an enhancement of 36.8%, 24.9%, 60.3% and 166.3%, respectively compared to that of neat epoxy. This is due to better surface roughness and the ability of eggshell powder as a crack arrestor. However, TEEP with 10% eggshell prone to agglomeration of eggshell powder caused poor bonding with epoxy resin and affect the mechanical properties.
引用
收藏
页码:2065 / 2084
页数:20
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