Unsaturated Polyester
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. POLYESTER COMPOSITES REINFORCED WITH MALEIC ANHYDRIDE-TREATED FILAMENTS FROM MAUVE
ABSTRACT The objective of this study was to evaluate the polyester-based fiber composites reinfor ced with filaments/fibers of mauve treated with NaOH and maleic anhydride. The che mical treatment of the mauve filament/fibers (3 cm of length) was carried out, first with NaOH, followed by maleic anhydride. The resin used was ortho unsaturated polyester with a
CERNE. Publicado em: 2018-03
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2. Unsaturated polyester composite reinforced with Caroá fiber (Neoglaziovia Variegate): water sorption and mechanical properties
ABSTRACT Aiming to minimize the environmental pollution and reducing the production costs of the composite materials, the use of plant fibers improves their physical and mechanical properties. On the other hand, fibers have high water absorption, which may increase their volume and weaken the fiber/matrix interaction, affecting the mechanical features of the
Matéria (Rio J.). Publicado em: 20/07/2017
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3. Influence of Stacking Sequence on the Mechanical and Dynamic Mechanical Properties of Cotton/Glass Fiber Reinforced Polyester Composites
This study focuses on the use of waste cotton fiber from the textile industry to produce composites with unsaturated polyester and to evaluate the performance of glass (G) / cotton (C) fiber laminates, particularly their mechanical and dynamic mechanical properties. Distinct stacking sequences were studied but the overall fiber content was kept constant. In
Mat. Res.. Publicado em: 05/04/2016
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4. Influence of Compaction Pressure and Particle Content on Thermal and Mechanical Behavior of Artificial Marbles with Marble Waste and Unsaturated Polyester
Compact artificial stones are widely used in buildings around the world, and the expected demand to the next years is increasing. In this study, stone fragments from marble processing are recycled as raw materials for produce compact artificial stones using compaction in a vacuum environment (100 mm Hg). Crushed marble waste (80 and 85%wt) are mixed with uns
Mat. Res.. Publicado em: 24/11/2015
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5. Mechanical properties of recycled Kraft paper residue polyester composites
Construction industry has a significant grow in the past few years. Following that rate, the amount of residue produced from that growth also increases. The need to find alternatives apart from disposing that residue in landfills have led researchers to find new materials from disposal residues. In this paper, kraft paper from cement bags used in building co
Mat. Res.. Publicado em: 13/06/2014
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6. Effect of temperature on the mechanical properties of polymer mortars
This paper presents the results of an experimental program to investigate the effect of temperature on the performance of epoxy and unsaturated polyester polymer mortars (PM). PM is a composite material in which polymeric materials are used to bond the aggregates in a fashion similar to that used in the preparation of Portland cement concrete. For this purpo
Materials Research. Publicado em: 07/08/2012
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7. Influence of glass and sisal fibers on the cure kinetics of unsaturated polyester resin
The effect of grinded glass and sisal fibers (25 vol%) on the cure kinetics of composites of unsaturated polyester resin (UPR) was investigated by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The DSC analysis was carried out at four different heating rates (5, 10, 20 and 40 °C/min), and the cure enthalpy and activation ene
Materials Research. Publicado em: 26/06/2012
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8. Estudo da flamabilidade e resistência à chama de compósito de poliéster insaturado e fibra da folha do abacaxizeiro (PALF)
Na presente pesquisa foram desenvolvidos compósitos com fibras da folha do abacaxizeiro (PALF - Pineapple Leaf Fiber), utilizando resina de poliéster insaturado como matriz, incorporando retardante de chama em diferentes composições. As fibras da folha do abacaxizeiro foram obtidas na ramada 4 do município de Ielmo Marinho no Estado do Rio Grande do Nor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/08/2011
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9. Experimental investigation on the effects of recycled aggregate on fracture behavior of polymer concrete
The sustainable management of solid wastes stimulates metallurgic and metal mechanics industries to look for safety applications for these wastes. The present paper examines the fracture behavior of polymer concrete (PC) manufactured with recycled foundry waste in substitution of fresh one. The recycled foundry sand is contaminated with polymer resin from th
Materials Research. Publicado em: 26/08/2011
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10. Fracture mechanics of polymer mortar made with recycled raw materials
The aim of this work is to show that industrial residues could be used in construction applications so that production costs as well as environmental protection can be improved. The fracture properties of polymer mortar manufactured with recycled materials are investigated to evaluate the materials behaviour to crack propagation. The residues used in this wo
Materials Research. Publicado em: 2010-12
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11. Concreto celular polimérico: influência na adição de resíduo de poliéster insaturado termofixo
This work addresses the production of lightweight concrete building elements, such as plates, prefabricated slabs for pre-molded and panels of fencing, presenting a singular concrete: the Lightweight Concrete, with special properties such low density and good strength, by means of the joint use of industrial waste of thermosetting unsaturated polyesters and
Publicado em: 2009
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12. Biomaterial based novel polyurethane adhesives for wood to wood and metal to metal bonding
Polyurethane adhesives made from synthetic chemicals are non-biodegradable, costly and difficult to find raw materials from local market. To avoid solid pollution problem, cost effectiveness and easy availability of raw materials, biomaterials based polyurethane adhesives are used in current industrial interest. Direct use of castor oil in polyurethane adhes
Materials Research. Publicado em: 2009