Fibre-reinforcement, flammability

The markets for polyetherimides arise to an extent from stricter regulations concerning flammability and smoke evolution coupled with such features as high strength, toughness and heat resistance. Application areas include car under-the-bonnet uses, microwave equipment, printed circuit boards and aerospace (including carbon-fibre-reinforced laminated materials). The polymer is also of interest in flim, fibre and wire insulation form. 

Very low flammability with limiting oxygen indices in the range 35-50 and UL 94 V-0 ratings at as low a thickness as 0.4 mm in some instances, even without fibre reinforcement. 

Porro [53] has compared the flammability characteristics of non-reinforced, glass fibre reinforced and mineral reinforced and mineral filled grades of polyketones. 

The mechanical strength and operating temperature of plastics are low compared with that of metals. The mechanical strength, and other properties, can be modified by the addition of fillers and plasticisers. When reinforced with glass or carbon fibres thermosetting plastics can have a strength equivalent to mild steel, and are used for pressure vessels and pressure piping. Unlike metals, plastics are flammable. Plastics can... 

Woodward and Brown [8] have described fire retardant glass fibre resin reinforced composite based on acrylic acid and Al(OH)3, flame retardant and a wetting agent. Flammability and mechanical properties are discussed. 

Hazarika A, Maji TK (2014c) Strain sensing behavior and dynamic mechanical properties of carbon nanotubes/nanoclay reinforced wood polymCT nanocomposite. Chem Eng J 247 33-41 Hazarika A, Maji TK (2014d) Thermal decomposition kinetics, flammability, and mechanical property smdy of wood polymtar nanocomposite. J Therm Anal Calorim 115 1679-1691 Hazarika A, Mandal M, Maji TK (2014) Dynamic mechanical analysis, biodegradability and thermal stability of wood polymer nanocomposites. Compos Part B 60 568-576 Hetzer M, Kee D (2008) Wootl/polymer/nanoclay composites, environmentally friendly sustainable technology a review. Chem Eng Res Des 86 1083-1093 Hill CAS, Abdirl KHPS, Hale MD (1998) A study of the potential of acetylation to improve the properties of plant fibres, frrd Crops Prod 8 53-63 Hoffmann MR, Martin ST, Choi WY, Bahnemann W (1995) Environmental application of semiconductm photocatalysis. Chem Rev 95 69-96 Huda MS, Drzal LT, Misra M, Mohanty AK (2(K)6) Wood-fiber-reinforced poly(lactic acid) composites evaluation of the physicomechanical and morphological properties. J AppI Polym Sci 102 4856-4869... 

Kozlowskiy, R. and Przybylak, M.W. (2008) Flammability and fire resistance of composites reinforced by natural fibres. Pdym. Adv. Technol, 19, 446-453. 

Grade Selection Criteria Flammability rating, electrical properties, transparency and impact properties. Reinforcement levels for glass fibres and minerals. Process characteristics for injection moulding and extrusion. 

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