Surface topographical studies of glass fiber reinforced epoxy-ZnO nanocomposites

Sridhar Thipperudrappa, Achutha Ullal Kini, Anupama Hiremath, Karani Dileep Kumar

Research output: Contribution to journalArticle

Abstract

The objective of present research work is to investigate the surface morphology and surface microhardness of unidirectional E-glass fiber epoxy composites filled with varying amount of ZnO nanofiller content such as 1, 2, 3, 4 and 5 wt% respectively. ZnO nanofiller was added to the epoxy resin matrix in varying amount (wt%) using mechanical stirrer and followed by ultrasonication process. The laminate composites were fabricated using a compression molding press technique. Further, laminate composites were subjected to individual characterization and testing according to ASTM standards. The crystalline nature of ZnO nanofiller was studied using x-ray diffraction analysis (XRD) and surface morphology of ZnO nanofiller on the resin surface was examined by using a scanning electron microscope (SEM). The experimental test results revealed that addition of nanofiller content by 1, 2 and 3 wt% resulted in a gradual reduction of void fraction and thereafter increase in void fraction was observed with 4 and 5 wt% of ZnO loading. The surface microhardness results indicated a linear increment with increase in ZnO nanofiller loading from 1 to 5 wt%. Further, surface topography was studied with the help of atomic force microscopy (AFM), to obtain the surface roughness values. The surface roughness values increased with increase in ZnO wt% within the epoxy resin matrix. The results of the surface analysis of the fabricated composites indicate that at higher loading of ZnO nanofiller, there is formation of clusters and agglomerates of the nanofiller which reduces the nano-scale effects of the filler and nanofillers tend to behave as micro-fillers.

Original languageEnglish
Article number015304
JournalMaterials Research Express
Volume7
Issue number1
DOIs
Publication statusPublished - 01-01-2020

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Glass fibers
Nanocomposites
Epoxy Resins
Void fraction
Composite materials
Epoxy resins
Microhardness
Laminates
Surface morphology
Fillers
Surface roughness
Compression molding
Surface analysis
Surface topography
Atomic force microscopy
Electron microscopes
Resins
Diffraction
Crystalline materials
Scanning

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Cite this

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title = "Surface topographical studies of glass fiber reinforced epoxy-ZnO nanocomposites",
abstract = "The objective of present research work is to investigate the surface morphology and surface microhardness of unidirectional E-glass fiber epoxy composites filled with varying amount of ZnO nanofiller content such as 1, 2, 3, 4 and 5 wt{\%} respectively. ZnO nanofiller was added to the epoxy resin matrix in varying amount (wt{\%}) using mechanical stirrer and followed by ultrasonication process. The laminate composites were fabricated using a compression molding press technique. Further, laminate composites were subjected to individual characterization and testing according to ASTM standards. The crystalline nature of ZnO nanofiller was studied using x-ray diffraction analysis (XRD) and surface morphology of ZnO nanofiller on the resin surface was examined by using a scanning electron microscope (SEM). The experimental test results revealed that addition of nanofiller content by 1, 2 and 3 wt{\%} resulted in a gradual reduction of void fraction and thereafter increase in void fraction was observed with 4 and 5 wt{\%} of ZnO loading. The surface microhardness results indicated a linear increment with increase in ZnO nanofiller loading from 1 to 5 wt{\%}. Further, surface topography was studied with the help of atomic force microscopy (AFM), to obtain the surface roughness values. The surface roughness values increased with increase in ZnO wt{\%} within the epoxy resin matrix. The results of the surface analysis of the fabricated composites indicate that at higher loading of ZnO nanofiller, there is formation of clusters and agglomerates of the nanofiller which reduces the nano-scale effects of the filler and nanofillers tend to behave as micro-fillers.",
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Surface topographical studies of glass fiber reinforced epoxy-ZnO nanocomposites. / Thipperudrappa, Sridhar; Kini, Achutha Ullal; Hiremath, Anupama; Kumar, Karani Dileep.

In: Materials Research Express, Vol. 7, No. 1, 015304, 01.01.2020.

Research output: Contribution to journalArticle

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