Fiberglass electrical insulators

Typical properties of fiberglass-filled alkyds are shown in Table I5.l. These products have good electric (insulative) properties and are moderately resistant to solvents and acids. Polyester fibers, based on polyethylene tere-phthalate (PET), are now the world s leading synthetic fibers. 

Transportation Tedlar film is suitable for fiberglass truck bodies (high salts resistance) and for aircraft interiors. Others production of labels and electrical insulation. Moreover, Tedlar laminated with other films, like polyester, PVF, etc., becomes an ideal product for the realization of solar cells, decorative panels and road signs. 

The electrical insulation properties of LCP are excellent, and because the LCP is homogeneous material, it is not prone to void formation as in fiberglass epoxy composite. The electrical breakdown strength of LCP is higher than polycarbonate—a plastic that is well-known for its good electrical properties. 

The traditional fiberglass heating mantle. An electric heater wrapped in fiberglass insulation and cloth that looks vaguely like a catcher s mitt (Fig. 61). 

Uses Secondary plasticizer for polyvinyl chloride in polyester resins to increase strength of fiberglass varnish formulations to improve water and alkali resistance as an insulator fluid for electric condensers and as an additive in very high pressure lubricants. In fluorescent and high-intensity discharge ballasts manufactured prior to 1979 (U.S. EPA, 1998). 

Rovings are essentially untwisted bundles of fiberglass strands wound up in parallel on cylindrically shaped packages. They are used in open lay-up moldings, woven fabrics, rods, and tubes. Woven rovings are used for open lay and press moldings. Yams [1] consist of twisted yam bundles. Weaver yarns are used for electrical and aircraft laminates, insulating tape, window shades, and filtration applications. Their major use is in printed circuit boards. Chopped strand serves as a reinforcement in a variety of markets. For example, it is used to... 

Particular safety regulations should be observed while removing fiberglass insulations (Sertoli et al. 1982). Removal of resined or starched materials is easier and less risky but, nevertheless, the cutting operations, which must never be carried out by a motor-driven device, should be reduced to a minimum. Removal of non-resined materials is highly risky every single operation should be preceded by suitable humidification of materials or by an adequate ventilation of the rooms and localized aspiration when, carried out dry, it involves the insulation of electric systems. Special rooms for personal hygiene (showers, bathrooms), secluded from those in which fibers are processed, should be available. 

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