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Searching entire Technology Site for Polyurethanes
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MRAT - 1.057 - Plastics: Hot-Wire Cutting, Fumes
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The cutting of expanded polystyrene by means of a wire heated to about 300 °C.NB Only expanded polystyrene may be cut using this equipment, NOT polyurethane foam; rigid polyurethane may be cut and shaped by abrasion in a well-ventilated area while springy polyurethane can be cut by knife.The electrical supply to the cutting wire should not exceed 25 volts and should be supplied through a separated extra-low voltage (SELV) source.
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Matched: Polyurethanes
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MRAT - 1.070 - Surface Finishes: Varnishes and Wood Polishes
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Traditional polishes are formulated for multiple thin-coat application to wood to give, with suitable manual polishing, a high-quality finish. They are not intended for exterior use. Polyurethane varnish gives a tough and resistant finish in indoor and outdoor applications. (Some twin-pack polyurethane finishes are not considered suitable for school use: see overleaf.)
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MRAT - 1.055 - Plastics: Hazards of Materials
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All plastics (polymers) degrade at sufficiently high temperatures, producing fumes with various hazards. Those materials presenting hazards at lower temperatures are discussed here.
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Matched: Polyurethanes
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MRAT - 5.026 - Plastics: Hazards of Materials
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All plastics (polymers) degrade at sufficiently high temperatures, producing fumes with various hazards. Those materials presenting hazards at lower temperatures are discussed here.The process itself may also be hazardous, eg drilling or machining, or may produce hazardous by-products, eg, dust.
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Matched: Polyurethanes
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