Reinforcing agents sisal

The large-production reinforcing agent used today is primarily glass. Other fibers include cotton, cellulosic fiber, sisal, polyamide, jute, carbon, graphite, boron, whiskers, steel, and other synthetic fibers.10 12> 289 291, 466 They all offer wide variations in composition, properties, fiber orientation/construction, weight, and cost (Tables 15.4 and 15.5... 

Leaf or hard fibres These fibres are most commonly used as reinforcing agents in polymers. They can be extracted for instance from sisal, henequen, abaca or pineapple. 

Natural fibers have been proved a viable reinforcement agent in many automotive parts. For example, flax, sisal, and hemp are applied in door cladding, seatback linings, and floor panels. Coconut fibers are used in seat bottoms, back cushions, and head restraints, while cotton fibers are used in vehicle parts that require effective sound proofing. In addition, wood fibers and acaba fibers are used in seatback cushions and floor body panels (Table 13.1). 

Joseph K, Thomas S, Pavithran C (1996) Effect of chemical treatment on the tensile properties of short sisal fibre-reinforced polyethylene composites. Polymer 37 5139-5149 Keener TJ, Stuart RK, Brown TK (2004) Maleated coupling agents for natural fibre composites. Compos A 35 357-362... 

Granular soil with fibre reinforcement is a material composed of granular natural soil (i.e. sand) and thin continuous fibres distributed in the material volume with or without cement or any other binding agent. The synthetic (polyester, polypropylene or polyamide) fibres are very thin and their volume fraction is low starting from 0.1% or 0.3% also natural fibres may be used (e.g. sisal, coir). The fibres are distributed in a uniform and isotropic way (3D) or are parallel to a selected plane (2D). The main influence of the reinforcement is the cohesion of sand, which is enhanced with the fibre content, while the angle of the internal friction remains constant. 

Sisal, and Whiskers, all of which see. Others sometimes used are chopped paper, macerated fabrics, synthetic fibers, and metal wires. To be effective, a reinforcement must form a strong adhesive bond with the matrix resin, to which end adhesion, promoting substances known as coupling agents are often preapplied to the fibers. Reinforcements differ from... 

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