Hydrophobicity, transparency, mechanically excellent and fire safety multifunctional epoxy resin based on a novel DOPO derivative with cyano group

2024年07月08日10:49 来源：无

Researchers discovered that a novel DOPO derivative with cyano groups (PDPO) as an additive for epoxy resin significantly improves the fire resistance as well as the mechanical properties and hydrophobicity of the material.

The research proves that the addition of just 5 per cent by weight of PDPO to an epoxy resin formulation increases the Limiting Oxygen Index (LOI) to 32.2 % and achieves a UL-94 V-0 classification. Source:: Ян-Заболотний - adobe.stock.com

A novel derivative of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) bearing cyano groups, referred to as PDPO, was successfully synthesized and applied as an additive for epoxy resin (E-44, with epoxide equivalent weights ranging from 201 to 240 g/epoxide), along with the curing agent 4,4′-diaminodiphenylmethane (DDM). Comprehensive characterization techniques, including Fourier transform infrared (FTIR) spectroscopy, 1H and 31P nuclear magnetic resonance (NMR) spectroscopy, and elemental analysis (EA), were employed to confirm the chemical structure of PDPO.

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