Polyurethane Resin
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. Optimization of castor oil polyurethane resin content of OSB panel made of Dendrocalamus asper bamboo
RESUMO Este trabalho apresenta um estudo da otimização do teor de resina poliuretana (PU) a base de óleo de mamona para a produção de painéis de partículas orientadas (OSB) utilizando bambu (Dendrocalamus asper). Para este estudo, painéis OSB de densidade média (650 kg/m3) foram produzidos com diferentes teores de resina (8%, 10%, 12% e 15%). As par
Ciência Florestal. Publicado em: 2022
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2. USE OF RESIDUES FROM THE CELLULOSE INDUSTRY AND SUGARCANE BAGASSE IN PARTICLEBOARDS
ABSTRACT The use of alternative materials such as lignocellulosic residues in the production of particleboards has increased considering that these residues are produced in large volumes and often do not have an appropriate destination. This research studied the use of residues from cellulose industries, sugarcane bagasse, and castor oil-based polyurethane r
Eng. Agríc.. Publicado em: 2021-02
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3. Influence of water absorption on glass fibre reinforced IPN composite pipes
Abstract Glass fibre reinforced composite pipes were fabricated by using an IPN blend of 0%, 10%, 20%, 30%, 40%, 50% PU prepolymer (Polyurethane) with VER(Vinylester) resin. The prepared IPN (Interpenetrating polymer networks) composite pipes were subjected to boiling water immersion tests in order to study the effect of moisture absorption characteristics.
Polímeros. Publicado em: 04/11/2019
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4. Paineis híbridos de lâminas e partículas de madeira para uso estrutural
Resumo O uso de painéis de madeira tem ganhado destaque na indústria da construção civil. Os painéis MDP não atingem requisitos estruturais, ao contrário dos painéis OSB e compensado. Uma alternativa a fim de aprimorar o uso de painéis de partículas de madeira consiste no reforço desses com lâminas de madeira (painéis híbridos). Esta pesquisa o
Ambient. constr.. Publicado em: 10/06/2019
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5. COATING PERFORMANCES OF CRIMEAN JUNIPER (Juniperus excelsa M. BIEB.) WOOD
ABSTRACT The purpose of this study is to determine the varnish layer hardness and varnish adhesion strength of the varnished Crimean juniper (Juniperus excelsa M. Bieb.) wood growing naturally in the Kastamonu region of Turkey. Test samples were varnished with UV-resistant polyurethane alkyd resin high gloss varnish (PAV) and water-based acrylic resin gloss
CERNE. Publicado em: 20/05/2019
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6. Caracterização de painéis de partículas de média densidade feitos com resina poliuretana monocomponente à base de mamona
Resumo Dentre os fatores envolvidos na fabricação dos painéis destaca-se o tipo adesivo, em que o uso de novos pode resultar em boas propriedades aos materiais fabricados. Nesse contexto, esta pesquisa objetivou avaliar propriedades físicas e mecânicas de painéis de partículas fabricados com madeiras de Pinus sp. e de Eucalyptus grandis e unidas com r
Ambient. constr.. Publicado em: 2019-03
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7. Can low-fusing glass application affect the marginal misfit and bond strength of Y-TZP crowns?
Abstract To evaluate the effect of different surface treatments on the marginal misfit and retentive strength between Y-TZP crowns and an epoxy resin. Forty (40) epoxy resin (G10) abutments (height: 5mm, conicity: 60, finish line: large chamfer) with equal dimensions were milled and included in polyurethane to simulate the periodontal ligament. Next, 40 Y-TZ
Braz. oral res.. Publicado em: 07/05/2018
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8. Hybrid Sandwich Particleboard Made with Sugarcane, Pínus Taeda Thermally Treated and Malva Fibre from Amazon
A multilayer particleboard panels, consisted of sugarcane bagasse reinforced composite as core material and hybrid composites made with Pinus taeda particles and Malva fibres as facing materials, were designed and evaluated in this work. Tukey test was used to identify the effect of the facing material, considering different combinations of Pinus taeda parti
Mat. Res.. Publicado em: 18/12/2017
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9. Green polyurethane synthesis by emulsion technique: a magnetic composite for oil spill removal
Abstract After the consolidation of the Brazilian biodiesel industry, issues related to the final destination of the glycerin, the by-product from the biodiesel industrial process, drawing the attention of several researchers. There are several uses to this byproduct. Among them, the obtaining of polymers, such as polyurethane (PU), are very encouraged since
Polímeros. Publicado em: 2017-12
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10. Finite Element Analysis of IPN Reinforced Woven Fabric Composite
ABSTRACT A series of E-Glass fiber reinforced polyurethane (PU)/vinyl ester(VER) resin interpenetrating polymer network (IPN) composites were prepared. The Mechanical Properties like tensile, flexural and impact of IPN composite were studied. Results revealed that addition of PU increases the impact strength by 8.33%, 7.69%, 14.28%, 12.5%, 11.11% for the pro
Matéria (Rio J.). Publicado em: 02/10/2017
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11. Experimental study on waterproofing MDF with castor oil-based vegetal polyurethane
ABSTRACT This study aimed to analyze the waterproofing MDF with different coatings. For this, a comparative study was conducted with the following coatings on MDF: Vegetable polyurethane resin on castor oil-based, acrylic lacquer and marine varnish. To carry out the research, sewed up the samples in sequence, they received the coatings, and then we performed
Matéria (Rio J.). Publicado em: 10/08/2017
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12. Reuse of waste paper and rice hulls as filler in polymeric matrix composites
ABSTRACT Concerns for the environment are recurrent in our society, and research on low impact materials such as those produced from waste is an alternative. This work is based on the reuse of scrap paper and rice hulls aiming to increase the life cycle of these waste products and to find better destination. Composites with a volumetric filler content (dispe
Matéria (Rio J.). Publicado em: 20/07/2017