Alkoxysilane oligomer modified epoxide primers

Elif Alyamac, Hua Gu, Mark D. Soucek, Shuyan Qiu, Rudolph G. Buchheit

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Telechelic resins with reactive end groups (epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide, the epoxy phosphate, and the epoxy ester were all modified with tetraethylorthosilicate (TEOS) oligomers, which were prepared through the hydrolysis and condensation of TEOS monomer with water under acidic condition. The epoxide/polysilicate (organic/inorganic) hybrid systems were characterized systematically, using FTIR, 1H, 13C, 31P, and 29Si NMR, and MALDI-TOF. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates. The coating performance of the modified epoxides was evaluated by pencil hardness, crosshatch adhesion, reverse and direct impact resistance, mandrel bending, and pull-off adhesion. Viscoelastic properties of the hybrid systems were also evaluated as a function of polysilicate content. Corrosion performance was evaluated via salt spray (fog) test for 264 h. Salt spray analysis revealed that inorganically modified epoxides provided improvement over the unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.

Original languageEnglish
Pages (from-to)67-81
Number of pages15
JournalProgress in Organic Coatings
Volume74
Issue number1
DOIs
StatePublished - May 2012

Keywords

  • Coating properties
  • Corrosion
  • Dynamic mechanical properties
  • Epoxides
  • Fatty acids
  • Phosphates
  • Salt spray
  • Sol-gel

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Surfaces, Coatings and Films
  • Organic Chemistry
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Alkoxysilane oligomer modified epoxide primers'. Together they form a unique fingerprint.

Cite this