Effects of accelerated weathering on degradation behavior of basalt fiber reinforced polymer nanocomposites

Ummu Raihanah Hashim, Aidah Jumahat, Mohammad Jawaid, Rudi Dungani, Salman Alamery

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This work aims to give insight on the effect of accelerated weathering, i.e., the combination of ultraviolet (UV) exposure and water spraying, on the visual and mechanical properties of basalt fiber reinforced polymer (BFRP) composites. The solvent exchange method, sonication and high shear milling technique were used to prepare the nanocomposite laminates. Three types of laminates were fabricated, i.e., unmodified BFRP, nanosilica modified BFRP and graphene nanoplatelet (GNP) modified BFRP composites with the total fiber loading of 45 wt.%. Glass fiber reinforced polymer (GFRP) laminate was also prepared for performance comparison purposes between the natural and synthetic fibers. The laminates were exposed to UV with a total weathering condition of 504 h using a Quantum-UV accelerated weathering tester. The weathering condition cycle was set at 8 h 60C UV exposure and 4 h 50C condensation. The discoloration visual inspection on the tested specimen was observed under the optical microscope. The obtained results showed that the UV exposure and water absorption caused severe discoloration of the laminates due to photo-oxidation reaction. The effect of weathering conditions on tensile and flexural properties of unmodified BFRP composites indicated that the UV exposure and water absorption caused reduction by 12% in tensile strength and by 7% in flexural strength. It is also found that the reduction in tensile and flexural properties of nanomodified BFRP composites was smaller than the unmodified system. It concluded from this work, that the mineral based composites (i.e., BFRP) has high potential for structural applications owing to its better properties than synthetic based composites (i.e., GFRP).

Original languageEnglish
Article number2621
Pages (from-to)1-16
Number of pages16
JournalPolymers
Volume12
Issue number11
DOIs
Publication statusPublished - Nov 2020
Externally publishedYes

Keywords

  • Accelerated weathering
  • Basalt fiber reinforced polymer composites
  • Nanocomposites
  • Polymer
  • UV exposure degradation

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics

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