Synthesis, characterization and corrosion protective properties of boron-modified polyurethane from natural polyol
作者： Deewan Akram , Eram Sharmin , Sharif Ahmad
DOI: 10.1016/J.PORGCOAT.2008.04.003
关键词:
摘要: Abstract A novel attempt has been made to incorporate boron in the backbone of castor oil develop boron-modified polyester (BCPE) and polyurethane (BPU). The overall reaction strategy involved “single pot multiple reactions” minimum solvent achieving about 50% reduction use volatile organic compounds (VOCs) during synthetic procedure. Spectral (I.R., 1 H NMR 13 C NMR), physicochemical thermal (TGA DSC) analyses BCPE BPU were carried out by standard methods. physico-mechanical corrosion/chemical resistance performances (in various corrosive media) tests coatings also conducted evaluate their coating properties. These studies revealed that (i) incorporation a significant influence on structural physico-chemical aspects, stability as well properties BPUs, (ii) interestingly, BPUs showed very good performance alkaline media (unaffected 5 wt% NaOH for 50 h) compared other previously reported oil-based counterparts, (iii) boron, here, acts both modifier crosslinker (iv) serve promising candidates corrosion protective material, which can be safely employed up 220 °C.
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