Buscar
Mostrando ítems 31-40 de 120
Confecção e avaliação de chapas de madeira aglomerada com aproveitamento de resíduos de marcenaria industrial
(Universidade Estadual Paulista (Unesp), 2014-01-24)
This work presents a study for making particleboard bonded wood employing cabinetmaking industrial waste (sawdust) in the region of São José do Rio Preto - SP. Initial exploratory studies were conducted aiming to evaluate ...
Polyurethane nanocomposites can increase the release control in granulated fertilizers by controlling nutrient diffusion
(2020-12-01)
We proposed a nanocomposite system based on castor oil-derived polyurethane (PU) for controlling the release of fertilizers by an ion-exchange mechanism. PU coatings modified with less than 5% montmorillonite, a cation-exchange ...
Analysis of dipolar relaxation in polyurethane/polyaniline blend
(Springer, 2005-09-01)
Thin films of blend made up of castor oil-based polyurethane (PU) and polyaniline (PANI) were obtained by casting. The molecular mobility was studied using dielectric spectroscopy and thermally stimulated depolarization ...
Analysis of dipolar relaxation in polyurethane/polyaniline blend
(Springer, 2005-09-01)
Thin films of blend made up of castor oil-based polyurethane (PU) and polyaniline (PANI) were obtained by casting. The molecular mobility was studied using dielectric spectroscopy and thermally stimulated depolarization ...
Painéis de pínus e bagaço de cana empregando-se dois adesivos para uso na construção civil
(Associação Nacional de Tecnologia do Ambiente Construído - ANTAC, 2019-10-03)
This research project aimed to produce and evaluate particleboard using sugarcane bagasse (Saccharum officinarum) and pínus (Pinus taeda; Pinus elliotti) particles by comparing the efficiency of the two adhesives: ...
Análise da viabilidade na utilização como isolante térmico de um compósito de poliuretano/pó de macambira
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2017-09-25)
In recent years, concern for the preservation of the environment has encouraged research into new materials that use raw materials from renewable natural sources. In this work, composite materials were produced from the ...
Obtenção e caracterização de compósito verde de casca de pinhão e poliuretana derivada do óleo de mamona
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Mecânica e de MateriaisUTFPR, 2017-12-13)
Polymeric composites reinforced with natural fibers are denominated green composites. Polymers comes from petroleum source, a non-biodegradable material and has volatile organic compounds, VOC, in its composition. Organic ...