Regeneration and utilization of waste phenolic formaldehyde resin: A performance investigation

Lve Yang, James Runt, Mu chen Kuo, Kuo shien Huang, Jen taut Yeh

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Recycled thermosetting phenolic formaldehyde (RPF) resins were pulverized to micron-sized powders and successfully reused as an effective component by reactive-injecting with neat phenolic formaldehyde (PF) and/or trioxymethylene (TOX) to prepare regenerated phenolic formaldehyde (i.e., PF x RPF w y and PF x RPF w y TOX z ). Tensile strength (σ f ), impact strength (I s ), and density (ρ) of PF x RPF w y and PF x RPF w y TOX z specimens were reduced as RPF concentrations or average particle sizes increased. It is worth emphasizing that σ f , I s , and ρ of each reaction-injected PF x RPF w y TOXz series having a fixed RPF concentration and average particle size improved to a maximum value, as TOX concentrations reached a corresponding optimal value. This is the first investigation to report that σ f and I s of proper regenerated PF/RPF/TOX specimens using ≦20 wt % RPF waste were ≥ 95% of those of the virgin reaction-injected PF. Possible reasons accounting for these improved mechanical properties were proposed based on results from their Fourier transform infrared analysis (FTIR).

Original languageEnglish (US)
Article number47445
JournalJournal of Applied Polymer Science
Volume136
Issue number18
DOIs
StatePublished - May 10 2019

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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