Fibre-Reinforced Plastics FRPs

Fibrous fillers of PLA-based materials for industrial and biomedical applications are summarized in Tables 8.8 and 8.9, respectively [182-184, 382-416]. Nonbiobased fibres that are used for the preparation of fibre-reinforced PLA-based plastics are multiwall carbon [Pg.211]

Since the early 2000s, plant-derived biobased fibrous fillers have been frequently used for the reinforcement of PLA-based materials. A well known and frequently used plant-derived fibrous filler is kenaf. Like the case of pollen as an additive, the wettability between PLLA and kenaf should be improved by the addition of a compatibilizer. Other fibrous materials are cellulose fibrous materials or fibres [383,384], cellulose whiskers [385], recycled cellulose fibre [386], cotton fibre [387], sugar beet pulp [388], flax [389], bamboo fibre [390], kenaf [391-393], papyrus [394], hemp fibre [395], cuphea and lesquerella [396], ramie [397], rice straw fibre [398], red algae fibre [399], miscanthus fibre [400], abaca fibre [401], milkweed [402], wood fibre [403] and recycled newspaper fibre [404], Poly(L-lactic acid) fibre can also be used to reinforce soft plastics such as PCL [405], [Pg.212]

Fibrous fillers for biomedical PLA-based FRPs include carbon and inorganic fibres [406], PLLA (i.e. self-reinforcement) [407,408], poly(p-dioxane) fibre [409], chitin [410], biodegradable fibre (e.g. bioactive glass, chitosan fibre, polyester amides) [411], hydroxyapatite fibre [412], hydroxyapatite whiskers [413], halloysite (Al2Si205(0H)4) nanotubes [414] and the fibre from different tissue types of Picea sitchensis [415], [Pg.212]

1 X 10 g mol ) crystallize in the a -form during solvent evaporation this reorganizes into the a-form at 120 °C, melts at 180 °C and further recrystallizes into stereocomplex crystallites [99], [Pg.213]

The stereocomplex formation of PLLA and PDLA is enhanced in the presence of stereoblock poly(lactic acid) [419], Stereocomplex formation was proposed to be a novel method of controlling the protein- and cell-adhesive properties of biodegradable matrices composed of PEG-PLA copolymers [420], A triangular growth mechanism was proposed for the PLLA/PDLA stereocomplex [95], and the nucleating mechanism is not altered by the PLLA/PDLA blending ratio [421], [Pg.213]

London, Stationery Office, 2003, pp.4, 30 cm, 2/9/04. Plastics Processing Sheet No. 14 ASSESSING AND CONTROLLING STYRENE LEVELS DURING CONTACT MOULDING OF FIBRE-REINFORCED PLASTIC (FRP) PRODUCTS. HSE INFORMATION SHEET. [Pg.37]

Epoxy resins find a large number of uses because of their remarkable chemical resistance and good adhesion. Epoxy resins are excellent structural adhesives. When properly cured, epoxy resins can yield very tough materials. They are used in industrial floorings, foams, potting materials for electrical insulations, etc. One of the principal constituents in many of the Fibre-reinforced plastics (FRP) is an epoxy polymer. [Pg.174]

The unsaturated polyester-styrene combination, is used as the resin matrix, in Fibre-reinforced plastics (FRP) structures. These resins also find use as decorative coatings. [Pg.186]

Fibre reinforced plastic (FRP) composites are gaining a wide reeognition as an alternative to the traditional metallic materials in a variety of applieations. As a result a reasonable step is to understand the mechanics of composites and provide the designers and industry with the knowledge based on reliable data stemmed from extensive researeh. [Pg.221]

When can we say that a product s life has finally ended Bridges must not fall down. They must remain safe to use, more specifically, despite the stresses and the external weathering they experience over decades. They must not become too expensive to maintain. Fibre reinforced plastics (FRP) boats are exposed to several hostile forces - water, weather, repetitive wave action and occasional impact. The chief concern is again structural integrity, but most small boats also have cosmetic appeal to their owners, and the cost of maintaining pristine appearance, free from worrying defects, must also be considered. [Pg.3]

A subsequent review of stress analysis and strength prediction of fibre reinforced plastic (FRP) mechanically fastened joints [41] identified five common failure modes tension, shear, bearing, cleavage and pull-through (See Fig. 2.11). The tensile strength of a single hole joint is said to depend... [Pg.65]

A comprehensive analytical model for predicting long term durability of resins and of fibre reinforced plastics (FRP) taking into account viscoelastic/viscoplastic creep, hygrothermal effects and the effects of physical and chemical aging on polymer response has been presented. An analytical tool consisting of a specialized test-bed finite element code, NOVA-3D, was used for the solution of complex stress analysis problems, including interactions between non-linear material constitutive behavior and environmental effects. [Pg.366]

The construction industry is using various kinds of composite materials such as fibre reinforced plastics (FRP), polymer concrete, polymer-asphalt, fibre reinforced polymer concrete, and so on. [Pg.21]

S. Faza and H. GangaRao, Fibre-Reinforced-Plastic (FRP) Reinforcement for Concrete Structures Properties and Applications, Ed., A. Nanni, Elsevier, Amsterdam, The Netherlands, 1993, p.167-188. [Pg.165]

Hand lay-up is a wet process and it is the simplest yet most labour-intensive and the most commonly used technique, since the 1940s. It is most suited for the production of similar components in limited numbers, (i.e., fibre-reinforced plastic (FRP) infill panels). In this method, successive layers of resin and reinforcement, (i.e., rovings, fabric, mat or randomly arranged chopped fibres of glass), are manually applied to an open mould, with the following basic procedure of five steps ... [Pg.332]

The tank can be fabricated of rabber lined mild steel, stainless steel, fibre-reinforced plastic (FRP) etc. (whichever is compatible with the chemical) and is mounted on a suitable transport vehicle. It will have arrangement to heat it if necessary. (MSRL/FRP tank will not be heated.)... [Pg.229]

Acrylic and aramid fibres are rarely applied as dispersed reinforcement. The latter, in the form of continuous multifilament cables and rods are used as non-metallic components of Fibre Reinforced Plastics (FRP). [Pg.124]

An further alternative approach being developed worldwide is to replace the steel completely by fibre-reinforced plastics (FRP), which consist of continuous fibres as carbon, glass or aramid, set in a suitable resin to form a composite rod or grid. These materials have high tensile strength, low density and are non-magnetic they can be used both for new structures and for repair of existing ones. The mechanical properties of FRP are determined by the amount and type of fibre, while the durability will be a function of both the resin and the fibre. [Pg.965]

Fibre reinforced plastics (FRP), e.g. external cladding to buildings. ... [Pg.208]

Thermoset polyesters are glass fibre-reinforced unsaturated polyesters and are often referred to as SMC or fibre-reinforced plastics (FRP) or simply fibreglass . [Pg.107]

Although aircraft structures comprise thousands of components produced from a myriad of basic materials, the most common substrates for structural adhesive bonding are wood, aluminium, titanium, stainless steel and the composite materials such as bonded sandwich structures, fibre reinforced plastic (FRP) laminates and fibre-metal laminates (FML) where the metal is usually aluminium. [Pg.244]

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