Now showing items 31-40 of 109
Vinyl ester resin modified with silicone-based additives. I. Mechanical properties
(John Wiley & Sons IncHobokenEUA, 2006)
Processing and characterization of ablative composites used in rocket motors
(Sage Publications Ltd, 2014-08-01)
The main objective of this research work was to obtain two formulations of ablative composites. These composites are also known as ablative structural composites, for applications in atmospherically severe conditions ...
Vegetal fibers in polymeric composites: a review
(Assoc Brasil Polimeros, 2015-01-01)
The need to develop and commercialize materials containing vegetal fibers has grown in order to reduce environmental impact and reach sustainability. Large amounts of lignocellulosic materials are generated around the world ...
Ionized-air-treated curaua fibers as reinforcement for phenolic matrices
(Wiley-v C H Verlag Gmbh, 2008-06-16)
Curaua fibers were treated with ionized air to improve the fiber/phenolic matrix adhesion.The treatment with ionized air did not change the thermal stability of the fibers. The impact strength increased with increase in ...
A poloxamer/chitosan in situ forming gel with prolonged retention time for ocular delivery
(ELSEVIER SCIENCE BV, 2010)
The aim of the present work was to obtain an ophthalmic delivery system with improved mechanical and mucoadhesive properties that could provide prolonged retention time for the treatment of ocular diseases. For this, an ...
Copolymers based on epoxidized soy bean oil and diglycidyl ether of bisphenol a: Relation between morphology and fracture behavior
Epoxidized soybean oil (ESO) was proved to be a good alternative to partially replace a synthetic commercial epoxy resin in a formulation to obtain thermosetting polymer, contributing to transform a vegetable oil into ...
Smart and structural thermosets from the cationic copolymerization of a vegetable oil
(John Wiley & Sons Inc, 2012-06)
Copolymers based on tung oil (TO) and presenting a very wide range of properties were obtained. Depending on the chemical composition, materials fitted for structural or functional applications were prepared. The use of ...
Phenolic matrices and sisal fibers modified with hydroxy terminated polybutadiene rubber: Impact strength, water absorption, and morphological aspects of thermosets and composites
(ELSEVIER SCIENCE BV, 2010)
The aim of the present work was to investigate the toughening of phenolic thermoset and its composites reinforced with sisal fibers, using hydroxyl-terminated polybutadiene rubber (HTPB) as both impact modifier and coupling ...
Sisal chemically modified with lignins: Correlation between fibers and phenolic composites properties
(ELSEVIER SCI LTD, 2008)
Sisal fibers have been chemically modified by reaction with lignins, extracted from sugarcane bagasse and Pinus-type wood and then hydroxymethylated, to increase adhesion in resol-type phenolic thermoset matrices. Inverse ...
Thermal degradation and fire resistance of unsaturated polyester, modified acrylic resins and their composites with natural fibres
The thermal degradation and fire resistance of different natural fibre composites were studied. Unsaturated polyester (UP) and modified acrylic resins (Modar) were used as matrix composites. The smoke emission of the ...