Epoxy resins are extensively employed in the construction,electronics,automotive,and aerospace industries owing to their outstandingmechanical strength,chemical resistance,and electrical insulation.However,their intri...Epoxy resins are extensively employed in the construction,electronics,automotive,and aerospace industries owing to their outstandingmechanical strength,chemical resistance,and electrical insulation.However,their intrinsic flammability,poor wear resistance,and hydrophilicity significantly restrict broader applications.To address these challenges,a novel multifunctional coating(CEOS-DOPO-PDMS)has been designed and fabricated via an NPGLIDE approach.The system integrates 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO)as a reactive phosphorus-based flame retardant,epoxy-terminated polydimethylsiloxane(EP-PDMS)as a hydrophobic segment,and cycloaliphatic epoxy-functionalized oligosiloxanes(CEOS)as a cross-linking co-reactant.The resulting CEOSDOPO-PDMS hybrid precursor was blended with bisphenol A diglycidyl ether(DGEBA)in N-methyl-2-pyrrolidone(NMP)and subsequently cured to form epoxy-based NP-GLIDE coatings.The optimized coating exhibits superior integrated performance,including high hydrophobicity(water contact angle up to 109.6°),outstanding abrasion resistance(5H pencil hardness),and excellent flame retardancy(resisting combustion at 500℃ for 30 s).These enhancements originate from the cooperative effects of the Si-O-Si framework,low-surface-energy PDMS chains,and phosphorus-containing DOPOmoieties,which together provide stable thermal protection,surface roughness-induced hydrophobicity,and durable mechanical integrity.An effective strategy for constructing multifunctional epoxy-based coatingswith simultaneously enhanced flame retardancy,wear resistance,andwater repellency is presented.The CEOSDOPO-PDMS system holds great promise for advanced protective applications in construction,transportation,and aerospace engineering.展开更多
基金supported by the Undergraduate Training Programs for Innovations by NEFU(grant number 202410225370)funded by Large-Scale Instrument and Equipment Sharing Service Platform of College of Chemistry,Chemical Engineering and Resource Utilization,NEFU.
文摘Epoxy resins are extensively employed in the construction,electronics,automotive,and aerospace industries owing to their outstandingmechanical strength,chemical resistance,and electrical insulation.However,their intrinsic flammability,poor wear resistance,and hydrophilicity significantly restrict broader applications.To address these challenges,a novel multifunctional coating(CEOS-DOPO-PDMS)has been designed and fabricated via an NPGLIDE approach.The system integrates 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO)as a reactive phosphorus-based flame retardant,epoxy-terminated polydimethylsiloxane(EP-PDMS)as a hydrophobic segment,and cycloaliphatic epoxy-functionalized oligosiloxanes(CEOS)as a cross-linking co-reactant.The resulting CEOSDOPO-PDMS hybrid precursor was blended with bisphenol A diglycidyl ether(DGEBA)in N-methyl-2-pyrrolidone(NMP)and subsequently cured to form epoxy-based NP-GLIDE coatings.The optimized coating exhibits superior integrated performance,including high hydrophobicity(water contact angle up to 109.6°),outstanding abrasion resistance(5H pencil hardness),and excellent flame retardancy(resisting combustion at 500℃ for 30 s).These enhancements originate from the cooperative effects of the Si-O-Si framework,low-surface-energy PDMS chains,and phosphorus-containing DOPOmoieties,which together provide stable thermal protection,surface roughness-induced hydrophobicity,and durable mechanical integrity.An effective strategy for constructing multifunctional epoxy-based coatingswith simultaneously enhanced flame retardancy,wear resistance,andwater repellency is presented.The CEOSDOPO-PDMS system holds great promise for advanced protective applications in construction,transportation,and aerospace engineering.
