Verbundwerkstoff auf Kunststoffbasis, Verfahren zu seiner Herstellung sowie Verwendung des Verbundwerkstoffes

摘要

A plastics-based composite material for controlling temperature and cut-off processes as a function of this temperature contains embedded particles of magnetic or magnetisable material with specific properties at elevated temperature, namely a specifically set Curie point for controlled switching or generation of heat. Independent claims are also included for (a) a method for the production of this material in which the magnetic or magnetisable particles are incorporated in the plastic by a mechanical mixing process; (b) a method for the production of this material from the starting mixture of plastic and magnetic particles by spray-drying, agglomeration in an attritor or pelletisation; (c) a method of using the material in which the starting powder is mixed in a spray flame and applied with a carrier gas by flame spraying; (d) a method of application in which a layer is produced from the powder mixture by thermal spraying; (e) a method in which the composite powder is processed by a fluidized bed sintering technique; and (f) a process in which the composite powder is used to make heating elements with automatic cut-off on reaching a set temperature, especially automatic cut-off heating elements for explosion-proof autoclaves, or elements for performing measuring processes.