resumo
High pressure laminates (HPLs) are attractive, resistant to environmental effects and good cost-benefit decorative surface composite materials whose properties can be tailored to meet specific market demands. In this study, the substantial improvement of dirt repellence of HPLs with simultaneous enhancement of its abrasion resistance was achieved for the first time by incorporating nonafluorohexyl polyhedral oligomeric silsesquioxane (FH-POSS) nanoparticles (up to 1% w/w) into a melamine formaldehyde (MF) resin matrix used to impregnate decorative and overlay papers required for HPLs production. FH-POSS particles were synthesized and thoroughly characterized by C-13 and Si-29 solid state nuclear magnetic resonance (NMR) spectroscopy, and by X-ray diffraction (XRD) analysis. Fluoroalkyl moieties in FH-POSS afforded increased hydrophobicity to HPLs thus providing improved surface clean ability, whereas abrasion resistance was improved due to the robust silica core of the POSS particles. Hydrophobicity of HPLs doped with FH-POSS increased with time, after resin curing, and this was attributed to migration of FH-POSS nanoparticles to the composite surface. (C) 2016 Elsevier B.V. All rights reserved.
palavras-chave
DIFFERENTIAL SCANNING CALORIMETERS; SURFACE FREE-ENERGY; SUPEROLEOPHOBIC SURFACES; SUPEROMNIPHOBIC SURFACES; DESIGN; CALIBRATION; VIBRATIONS
categoria
Engineering
autores
Magina, S; Ferra, J; Cruz, P; Nogueira, HIS; Portugal, I; Evtuguin, DV
nossos autores
Dmitry Evtyugin
Professor Associado com Agregação
Helena Isabel Seguro Nogueira
Professor Auxiliar com Agregação
Inês Portugal
Professor Auxiliar
Sandra Pereira Magina
Investigadoragradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through FCT/MEC and by ERDF Funds through Operational Competitiveness Programme - COMPETE, in the frame of project 2GLAM-FCOMP-01-0202-FEDER-023006. The authors acknowledge the collaboration of Margarida Nogueira during the production of HPLs at SONAE Indlistria de Revestimentos (SIR) and Ms. Maksim Starykevich for the GDOES analysis of HPL.