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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/10/2018 |
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Data da última atualização: |
18/10/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CADEMARTORI, P. H. G. de; SCHREINER, W. H.; MAGALHAES, W. L. E. |
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Afiliação: |
Pedro Henrique Gonzalez de Cademartori, UFPR; Wido Herwig Schreiner, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Facile one-step fabrication of highly hydrophobic medium density fiberboard (MDF) surfaces via spray coating. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Progress in Organic Coatings, v. 125, p. 153-159, Dec. 2018. |
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DOI: |
doi.org/10.1016/j.porgcoat.2018.08.032 |
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Idioma: |
Inglês |
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Conteúdo: |
We proposed a simple and useful one-step spray coating method to protect MDF panels against physical and mechanical damages commonly presented in indoor real-life conditions. Highly hydrophobic surfaces were designed by TMCS (trimethylchlorosilane)-SiO2 nanoparticles deposition on MDF panels as a function of concentration of solution (0.1 and 0.3%) and number of cycles (10, 20 and 30 times). The formation of TMCS-SiO2 coating on MDF surface was investigated by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), X-ray photoelectron spectroscopy (XPS), attenuated total reflectance with Fourier transform infrared spectroscopy (ATR-FTIR) and time-dependent apparent contact angle (WCA). Water drop impacting, dust impacting, and tape-peeling tests were conducted to simulate real-condition damages on MDF surfaces and to investigate the durability of highly hydrophobic coating. The coated MDF panels showed apparent water contact angle exceeding 140° with an interesting time-dependent stability and ability to roll-off, especially because the hydrophobicity of TMCS and hierarchical structure self-organized by spherical SiO2 nanoparticles. This rougher surface and presence of alkyl groups provide physical and mechanical durability of MDF panels even after water drop and dust impact tests, and tape-peeling up to five cycles. Therefore, this facile one-step MDF coating can be an effective, stable and mechanically durable alternative to protect MDF in undesirable real-life conditions. MenosWe proposed a simple and useful one-step spray coating method to protect MDF panels against physical and mechanical damages commonly presented in indoor real-life conditions. Highly hydrophobic surfaces were designed by TMCS (trimethylchlorosilane)-SiO2 nanoparticles deposition on MDF panels as a function of concentration of solution (0.1 and 0.3%) and number of cycles (10, 20 and 30 times). The formation of TMCS-SiO2 coating on MDF surface was investigated by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), X-ray photoelectron spectroscopy (XPS), attenuated total reflectance with Fourier transform infrared spectroscopy (ATR-FTIR) and time-dependent apparent contact angle (WCA). Water drop impacting, dust impacting, and tape-peeling tests were conducted to simulate real-condition damages on MDF surfaces and to investigate the durability of highly hydrophobic coating. The coated MDF panels showed apparent water contact angle exceeding 140° with an interesting time-dependent stability and ability to roll-off, especially because the hydrophobicity of TMCS and hierarchical structure self-organized by spherical SiO2 nanoparticles. This rougher surface and presence of alkyl groups provide physical and mechanical durability of MDF panels even after water drop and dust impact tests, and tape-peeling up to five cycles. Therefore, this facile one-step MDF coating can be an effective, stable and mechanically durable alternative to protect MDF in undesirable r... Mostrar Tudo |
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Palavras-Chave: |
High hydrophobicity; MDF; Mechanical stability; SiO2 nanoparticles; Time dependent stability; Wood based panel. |
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Thesagro: |
Higroscopia; Painel de Madeira; Revestimento. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02369naa a2200265 a 4500
001 2097706
005 2018-10-18
008 2018 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1016/j.porgcoat.2018.08.032$2DOI
100 1 $aCADEMARTORI, P. H. G. de
245 $aFacile one-step fabrication of highly hydrophobic medium density fiberboard (MDF) surfaces via spray coating.$h[electronic resource]
260 $c2018
520 $aWe proposed a simple and useful one-step spray coating method to protect MDF panels against physical and mechanical damages commonly presented in indoor real-life conditions. Highly hydrophobic surfaces were designed by TMCS (trimethylchlorosilane)-SiO2 nanoparticles deposition on MDF panels as a function of concentration of solution (0.1 and 0.3%) and number of cycles (10, 20 and 30 times). The formation of TMCS-SiO2 coating on MDF surface was investigated by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), X-ray photoelectron spectroscopy (XPS), attenuated total reflectance with Fourier transform infrared spectroscopy (ATR-FTIR) and time-dependent apparent contact angle (WCA). Water drop impacting, dust impacting, and tape-peeling tests were conducted to simulate real-condition damages on MDF surfaces and to investigate the durability of highly hydrophobic coating. The coated MDF panels showed apparent water contact angle exceeding 140° with an interesting time-dependent stability and ability to roll-off, especially because the hydrophobicity of TMCS and hierarchical structure self-organized by spherical SiO2 nanoparticles. This rougher surface and presence of alkyl groups provide physical and mechanical durability of MDF panels even after water drop and dust impact tests, and tape-peeling up to five cycles. Therefore, this facile one-step MDF coating can be an effective, stable and mechanically durable alternative to protect MDF in undesirable real-life conditions.
650 $aHigroscopia
650 $aPainel de Madeira
650 $aRevestimento
653 $aHigh hydrophobicity
653 $aMDF
653 $aMechanical stability
653 $aSiO2 nanoparticles
653 $aTime dependent stability
653 $aWood based panel
700 1 $aSCHREINER, W. H.
700 1 $aMAGALHAES, W. L. E.
773 $tProgress in Organic Coatings$gv. 125, p. 153-159, Dec. 2018.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
08/02/2019 |
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Data da última atualização: |
12/12/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PINTO, T. da P.; ARAÚJO, F. S.; FREITAS, L. de O.; TEODORO, M. S.; SANTOS, V. B. dos; BRITO, A. C. C. |
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Afiliação: |
THAMIRES DA PASCOA PINTO, UESPI; FERNANDO SILVA ARAÚJO, UESPI; LUCAS DE OLIVEIRA FREITAS, UESPI; MAURO SERGIO TEODORO, CPAMN; VALDINAR BEZERRA DOS SANTOS, UESPI; ANA CLECIA CAMPOS BRITO, UFPI. |
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Título: |
Atividade microbiana de um latossolo amarelo sob adubação verde. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 35., 2015, Natal. O solo e suas múltiplas funções: anais. Natal: Sociedade Brasileira de Ciência do Solo, 2015. |
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Páginas: |
4 p. |
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Idioma: |
Português |
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Conteúdo: |
O uso da adubação verde nas unidades de produção orgânica é uma estratégia com elevado potencial de impacto na produtividade das culturas e na conservação do solo. O presente trabalho teve como objetivo quantificar a respiração basal de um latossolo amarelo sob diferentes sistemas de manejo de adubos verdes. |
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Palavras-Chave: |
Microorganismo; Qualidade do solo; Respiração basal. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/192439/1/CBCS-2015-Atividade-microbiana.pdf
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Marc: |
LEADER 01057nam a2200217 a 4500
001 2105778
005 2023-12-12
008 2015 bl uuuu u00u1 u #d
100 1 $aPINTO, T. da P.
245 $aAtividade microbiana de um latossolo amarelo sob adubação verde.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 35., 2015, Natal. O solo e suas múltiplas funções: anais. Natal: Sociedade Brasileira de Ciência do Solo$c2015
300 $a4 p.
520 $aO uso da adubação verde nas unidades de produção orgânica é uma estratégia com elevado potencial de impacto na produtividade das culturas e na conservação do solo. O presente trabalho teve como objetivo quantificar a respiração basal de um latossolo amarelo sob diferentes sistemas de manejo de adubos verdes.
653 $aMicroorganismo
653 $aQualidade do solo
653 $aRespiração basal
700 1 $aARAÚJO, F. S.
700 1 $aFREITAS, L. de O.
700 1 $aTEODORO, M. S.
700 1 $aSANTOS, V. B. dos
700 1 $aBRITO, A. C. C.
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