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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
16/01/2018 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo de Divulgação na Mídia |
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Autoria: |
NASCIMENTO JUNIOR, J. de D. B. |
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Afiliação: |
JOAO DE DEUS BARBOSA N JUNIOR, CPATU. |
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Título: |
Estratégias de ocupação dos espaços rurais urbanos e periurbanos como forma de sobrevivência socioeconômica de comunidades agrícolas municipais. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Portal EcoDebate, 16 jan. 2018. |
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Idioma: |
Português |
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Palavras-Chave: |
Agricultura urbana; Desenvolvimento urbano. |
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Categoria do assunto: |
B Sociologia Rural |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171144/1/Estrategias.pdf
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Marc: |
LEADER 00488nam a2200121 a 4500
001 2085507
005 2021-12-22
008 2018 bl uuuu u00u1 u #d
100 1 $aNASCIMENTO JUNIOR, J. de D. B.
245 $aEstratégias de ocupação dos espaços rurais urbanos e periurbanos como forma de sobrevivência socioeconômica de comunidades agrícolas municipais.$h[electronic resource]
260 $aPortal EcoDebate, 16 jan. 2018.$c2018
653 $aAgricultura urbana
653 $aDesenvolvimento urbano
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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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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Circulação/Nível: |
A - 1 |
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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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Embrapa Florestas (CNPF) |
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