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SISAL
About: SISAL is a research topic. Over the lifetime, 1878 publications have been published within this topic receiving 55528 citations.
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31 May 2017
TL;DR: In this paper, a preparation method of sisal hemp enhanced polyester masterbatch is presented, which is mainly prepared from components as follows: polyethylene glycol terephthalate, sisal fibers, alkali liquor, a reagent A and a coupling agent.
Abstract: The invention mainly provides a preparation method of sisal hemp enhanced polyester masterbatch. The polyester masterbatch is mainly prepared from components as follows: polyethylene glycol terephthalate, sisal fibers, alkali liquor, a reagent A and a coupling agent, wherein polyethylene glycol terephthalate accounts for 70wt%-80wt%, the usage amount of the coupling agent is 0.5wt%-2wt%, and the sisal fibers account for 20wt%-30wt%. The sisal fibers are placed in a water tank, the alkali liquor is added, the water tank is radiated by an ultrasonic radiation device for a period of time, then the reagent A is added, after radiation is performed continuously for a period of time, the sisal fibers are taken out, dried and subjected to blending and melting granulation, and the sisal hemp enhanced polyester masterbatch is obtained. According to the method, the natural fibers are modified with an ultrasonic radiation method and made to be suitable for a polyester system, and light high-strength polyester masterbatch is prepared on the basis of toughness and strength of the sisal fiber materials and has application prospect in automotive interior and healthy fabric.
3 citations
TL;DR: In this paper, a composite partially ecological was made, using as reinforcement, a sisal woven and, as matrix, the polyester resin, and the composite subjected to this treatment presented, in bending test, a better mechanical performance, with an increase of 27% in the flexion strength and of 54% in maximum strain, but there was a reduction of about 15% in its flexural modulus.
Abstract: The use of composites in manufacturing equipment and products is taking a very important space in the industry in general. Moreover these materials have unique characteristics when analyzed separately from constituents who are part of them. However it is know that cares must be taken in their manufacture, as the use of appropriate process and the composition of each element, in addition to adherence fiber / matrix, which is a major factor in obtaining of the final mechanical strength of the product. One should also take into account whether the composites are environmentally friendly. For this reason, in this work, a composite partially ecological was made, using as reinforcement, a sisal woven and, as matrix, the polyester resin. Seeking to improve the adherence fiber / matrix, a treatment in sisal woven was performed with aqueous solution of sodium hydroxide (NaOH) at a concentration of 3%. The composite subjected to this treatment presented, in bending test, a better mechanical performance, with an increase of 27% in the flexion strength and of 54% in maximum strain, but there was a reduction of about 15% in its flexural modulus.
3 citations
01 Jan 1997
TL;DR: Sisal pulp has physical characteristics superior to softwood kraft pulp as discussed by the authors, and it can be used as a reinforcing fibre in high recycle content papers, or its use may permit basis weight reductions while maintaining product quality.
Abstract: Sisal pulp has physical characteristics superior to softwood kraft pulp. Depending on the furnish components and paper quality requirements, sisal pulp can replace softwood kraft at a rate of up to 2.8:1. This offers many opportunities for sisal pulp. For example, sisal pulp may be used as a reinforcing fibre in high recycle content papers, or its use may permit basis weight reductions while maintaining product quality. Sisal pulp as a value added replacement to softwood kraft in commodity papers is considered a viable alternative market. Part 1 of this paper reviews the laboratory work to establish conditions for producing TCF bleached sisal pulp, and discusses the results of pilot scale trial tests on pulp samples which were distributed to paper companies for testing in various furnishes. Part 2 reviews a sisal estate plan to provide pulping fibre, tentative flowsheets for fibre preprocessing stations and a sisal market pulp mill using processes and equipment which are currently available on the market, and the estimated capital and manufacturing costs and economic analysis for a 50,000 metric ton per year sisal market pulp mill.
3 citations
TL;DR: In this paper, the effect of water absorption on the behavior of laminated biocomposites using flax (F) and sisal (S) fiber composites with different stacking sequences and fiber orientation at 90° (F090s and S090s), as well as hybridizations (F/4S90/F and S/4F90/S) to reinforce an epoxy matrix.
Abstract: ABSTRACT Natural fiber composites are being increasingly used in several fields, owing to their considerable cost, weight, and environmental benefits. The objective of this research is to study the effect of water absorption on the behavior of laminated biocomposites using flax (F) and sisal (S) fiber biocomposites with different stacking sequences (3S and 3F) and fiber orientation at 90° (F090s and S090s), as well as hybridizations (F/4S90/F and S/4F90/S) to reinforce an epoxy matrix. The kinetics of water diffusion within the proposed biocomposites was monitored and analyzed through a model-based optimization approach using artificial neural network (ANN) method. The results of this study showed that the amount of water absorbed by different types of biocomposites increased with time according to Fick’s law. Non-hybrid flax and sisal fiber composites (UD and (0/90°)s oriented) had lower water absorption rates than the hybrid orientation. It was also observed that sisal fiber was most sensitive to water absorption than flax. A high correlation of experimental data with the model was revealed which denoted that the ANN learning process was perfectly performed. Therefore, it was inferred that the ANN approach can accurately predict biocomposites water absorption.
3 citations