Manufacture of particleboard based on cement bag and castor oil polyurethane resin

Cravo, Julio Cesar Machado; Sartori, Diogo de Lucca; Mármol, Gonzalo; Balieiro, J. C. C.; Machado, Gilmara de Oliveira; Fiorelli, Juliano

doi:10.1016/j.conbuildmat.2015.03.114

Cited by 23 publications

(12 citation statements)

References 20 publications

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“…These results are due to low hydroxyl groups binding water on the surface of the composites [34]. kg/m 3 [9]. Water absorption of conventional particleboard with urea-formaldehyde adhesive is 31.0 to 41.0 % with densities of ca.…”

Section: Moisture Content and Water Absorption Of Bamboo Charcoal/woomentioning

confidence: 99%

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Castor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoal

Chen¹,

Tai²

2018

Preprint

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Polyurethane (PU) foam adhesives were prepared from castor oil as a polyol with isocyanate poly (4,4′-methylene diphenyl isocyanate) (PMDI) using a solvent-free process. The NCO/OH molar ratio used for the preparation of PU foams was 1.5. Water, organosiloxane and dibutyltin dilaurate were blowing agent, surfactant and catalyst, respectively. Effects of the ratio of blowing agent and catalyst were adjusted to optimize the properties. The results show that 4 wt% of castor oil of catalyst and blowing agent minimizes water absorption and maximizes volume expansion in the PU foams. FT-IR analysis shows that urethane bond was formed by hydroxyl group of castor oil and –NCO group of isocyanate PMDI. More blowing agent and catalyst could improve the volume expansion ratio and reduce water retention of PU foams. It was found that Moso bamboo charcoal (Phyllostachys pubescens) or/and China fir wood particle (Cunninghamia lanceolate) composites with setting densities of 500 and 600 kg/m3 can be prepared from optimized castor oil-based PU foam adhesive at 100 °C for 5 min under a pressure of 1.5 MPa. Increasing the amount of bamboo charcoal decreases the equilibrium moisture content, water absorption and internal bonding strength of the composite. Notably, bamboo charcoal composite exhibits excellent dimensional stability. The optimized density and bamboo charcoal percentages of the composite were 500 kg/m3 and 50 to 100%. The castor oil-based PU composites containing bamboo charcoal fulfilled the CNS 2215 standards for particleboard. This dimensionally stable, low-density bamboo charcoal composite has high potential to replace current indoor building materials.

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Section: Moisture Content and Water Absorption Of Bamboo Charcoal/woomentioning

confidence: 99%

“…Fiorelli (2012) used castor oil based PU adhesive to prepare coconut fiber-based particulate composite [8]. Cravo et al (2015) used cement packaging residues to manufacture particleboards with castor-based PU resin [9]. Tenorio-Alfonso et al (2017) prepared castor oil-based PU adhesives with cellulose acetate for bonding wood [10].…”

Section: Introductionmentioning

confidence: 99%

Castor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoal

Chen¹,

Tai²

2018

Preprint

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“…A versatilidade da madeira permite sua utilização em vários seguimentos da economia (CHRISTOFORO et al, 2017;TAKESHITA;JANKOWSKY, 2015;MARINHO et al, 2017). Desde a sua extração na floresta nativa ou plantada (DOUGHERTY;WRIGHT, 2012;STEEGE et al, 2016), passando pelos processos industriais, consumidor e descarte final, a geração de resíduos acontece, e pode ser minimizada com o estudo prévio para o racional processamento da madeira (MANHIÇA; ROCHA; TIMOFEICZYK JUNIOR, 2013).…”

Section: Introductionunclassified

“…Nesse sentido, destaca-se a fabricação de painéis híbridos à base de madeira. O painel híbrido recebe esse nome por contemplar partículas de madeira de diferentes dimensões (e espécies), com a possibilidade da inserção de outros tipos de materiais (fibras naturais ou sintéticas, por exemplo) em um mesmo painel (ALVES et al, 2014;CRAVO et al, 2015;BATTISTELLE et al, 2016;FERRO et al, 2016;VIDIL et al, 2016;ZHONG et al, 2017).…”

Section: Introductionunclassified

Painel híbrido OSB/MDP de madeira Pinus taeda e resina poliuretana à base de óleo de mamona

et al. 2019

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Resumo Os painéis reconstituídos à base de madeira são uma alternativa para utilização na construção civil e na indústria do mobiliário. Dentre os tipos de painéis, destacam-se o OSB (Oriented Strand Board) e o MDP (Medium Density Particleboard). O objetivo desta pesquisa foi avaliar as propriedades físicas e mecânicas de painéis híbridos OSB/MDP, visando uma alternativa de uso em novo sistema fabril com o reaproveitamento de partículas de madeira. Foram fabricados painéis OSB, híbridos e MDP em escala laboratorial e determinadas suas respectivas propriedades físicas e mecânicas de acordo com as normas EN 300:2006 e ABNT NBR 14.810-2:2013. A influência dos tipos de painéis nas propriedades foi investigada pela análise de variância (ANOVA), os testes de normalidade de Anderson-Darling (AD) e de homogeneidade de variâncias de Bartlett (Bt) foram utilizados na verificação da validade das hipóteses da ANOVA. O teste de comparações múltiplas de Tukey foi utilizado para o agrupamento dos níveis do fator (tipo de painel) nas propriedades avaliadas. Os valores obtidos para as propriedades físicas e mecânicas dos painéis híbridos OSB/MDP alcançaram os valores mínimos determinados pelas normas vigentes. Os painéis híbridos apresentaram propriedades que permitem sua aplicação estrutural e em ambientes úmidos.

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“…Among renewable resources, castor oil (CO) was recognized as the best vegetable oil due to its inherent biodegradability, low cost, and abundant availability , with some drawbacks such as low thermal stability and mechanical strength . Castor oil is the triglyceride of ricinoleic acid (HOOC(CH 2 ) 7 CHCHCH 2 CHOH(CH 2 ) 5 CH 3 ) which contains a secondary hydroxyl group that allows the use of CO as polyol to react with diisocyanates to form green polyurethanes . Castor oil is a triol and thus the polyurethanes synthesized using it are cross‐linked .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of bio‐based polyurethanes obtained from castor oil and poly (3‐hydroxybutyrate) and their nanocomposites

2017

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Bio‐based polyurethanes (PUs) were synthesized from castor oil (CO) and poly(3‐hydroxybutyrate)‐diol (PHB‐diol) using 1,6‐hexamethylene diisocyanate, as nontoxic connecting agent. The PHB content in the obtained PUs was adjusted from 0 to 60.0 wt%. The synthesis was carried out by one pot solution polymerization. PUs nanocomposites loaded with different contents of cloisite®25A (C25A) were prepared by means of in situ solution polymerization. The molecular structure of the obtained PUs was confirmed by FT‐IR. The thermal properties of the neat PUs and the resulting nanocomposites were investigated using DSC and TGA. It was found that the cold crystallization of the PHB component was enhanced, while its melt crystallization was retarded with increasing its own content in the PUs. The incorporated C25A in the PU matrix shifted the cold crystallization peak to higher temperature. TGA studies reveal that neat PUs and nanocomposites exhibited three main decompositions steps. The thermal stability of the neat PUs decreased with increasing the PHB content and increased with increasing the C25A content. Tensile mechanical testing revealed that increasing the content of the PHB and C25A made the PUs rigid and strong. The elastic modulus and ultimate tensile strength of the neat PUs were found to increase with increasing the PHB content and enhanced with incorporation of C25A, while the elongation decreased with increasing the PHB and C25A content. The equilibrium swelling in 1,2‐dichloroethane decreased with increasing both the PHB and C25A content in PU matrix. POLYM. COMPOS., 39:E489–E499, 2018. © 2017 Society of Plastics Engineers

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Manufacture of particleboard based on cement bag and castor oil polyurethane resin

Cited by 23 publications

References 20 publications

Castor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoal

Castor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoal

Painel híbrido OSB/MDP de madeira Pinus taeda e resina poliuretana à base de óleo de mamona

Preparation and characterization of bio‐based polyurethanes obtained from castor oil and poly (3‐hydroxybutyrate) and their nanocomposites

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