Results 141 to 150 of about 367 (170)
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Early-age shrinkage of cement pastes with polypropylene and curaua fibres
Advances in Cement Research, 2021The aim of this research was to investigate the effect of the addition of discrete polypropylene fibres (PPF) and curaua fibres (CF) on the early-age autogenous and drying shrinkage of cement pastes. The fibres used were 12 mm long and the volume fraction varied from 0.3 kg/m3 (0.03%) to 2.7 kg/m3 (0.30%).
Mariana dos Santos Motta +2 more
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Study of hybrid intralaminate curaua/glass composites
Materials & Design, 2012In this study, thermal, mechanical and dynamic mechanical analyses of hybrid intralaminate curaua/glass composites were carried out. Distinct curaua/glass fiber content ratio and overall fiber volume fraction (20, 30 and 40 vol.%) were studied. Thermal analysis showed higher thermal stability for the glass reinforcement.
José Humberto Santos Almeida Júnior +3 more
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The use of curaua fibers as reinforcements in composites
2015Nowadays, there is growing worldwide interest in the use of natural renewable materials to replace synthetic polymers or improve the properties of current materials. Natural fibers seem to offer a great opportunity in this respect, and among them curaua (. Ananas erectifolius L. B. Smith) fiber has unique properties, such as high strength, low density,
Souza, S. F. +6 more
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Thermal and mechanical characteristics of polyurethane/curaua fiber composites
Journal of Thermal Analysis and Calorimetry, 2008Polyurethane composites reinforced with curaua fiber at 5, 10 and 20% mass/mass proportions were prepared by using the conventional melt-mixing method. The influence of curaua fibers on the thermal behavior and polymer cohesiveness in polyurethane matrix was evaluated by dynamic mechanical thermal analysis (DMTA) and by differential scanning ...
Cheila G. Mothé +2 more
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Effect of silane treatment on the Curaua fibre/polyester interface
Plastics, Rubber and Composites, 2019Good adhesion at fibre/matrix interface of lignocellulosic fibres is crucial when substituting synthetic fibres in polymer composites.
Alan Miguel Brum da Silva +4 more
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Recycled polypropylene reinforced with curaua fibers by extrusion
Journal of Applied Polymer Science, 2009AbstractCuraua fibers were studied as reinforcing agents for postconsumer polypropylene. The composites were processed by extrusion. The composite properties were investigated by mechanical tests, thermal methods, melt flow index, surface morphology, and water uptake.
Marcia A. Silva Spinacé +2 more
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Improvement of Mechanical Properties of Curaua Fiber Green Composites
Key Engineering Materials, 2007Environment-friendly green composites were developed by combining a biodegradable resin with curaua fibers. The composites were fabricated by three different methods, i.e. direct, pre-forming and prepreg sheets methods. Mechanical properties of composites fabricated by all three methods were evaluated through tensile test.
Takanori Matsuo +3 more
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Natural Curaua Fiber-Reinforced Composites in Multilayered Ballistic Armor
Metallurgical and Materials Transactions A, 2015The performance of a novel multilayered armor in which the commonly used plies of aramid fabric layer were replaced by an equal thickness layer of distinct curaua fiber-reinforced composites with epoxy or polyester matrices was assessed. The investigated armor, in addition to its polymeric layer (aramid fabric or curaua composite), was also composed of
Sergio Neves Monteiro +11 more
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Characterization of Raw and Treated Curaua Fibers to be Applied as Reinforcement in Composites
Materials Science Forum, 2012Lignocellulosic fibers present several advantages over synthetic fibers, such as low cost and biodegradability. In this work the tensile mechanical behavior of as-received and surface treated curaua fibers was analyzed. Mercerization and three different enzyme surface treatments were used.
Ana.L.F.S. d'Almeida +2 more
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2016
Curaua fibres are leaf fibres extracted from an Amazon-forest plant (Ananas comosus var. erectifolius) closely related to the pineapple. There is evidence of successful use of curaua fibre in different areas, such as: reinforcing composite structures and products in the automobile industry, due the high mechanical resistance associated with low density
Pimenta, Paulo +4 more
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Curaua fibres are leaf fibres extracted from an Amazon-forest plant (Ananas comosus var. erectifolius) closely related to the pineapple. There is evidence of successful use of curaua fibre in different areas, such as: reinforcing composite structures and products in the automobile industry, due the high mechanical resistance associated with low density
Pimenta, Paulo +4 more
openaire +1 more source