SR EN ISO 19063-1:2016

ISO 19063-1:2015 establishes a system of designation for impact-resistant polystyrene (PS-I) moulding and extrusion materials, which may be used as the basis for specifications. The types of impact-resistant polystyrene plastic are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) Vicat softening temperature; b) melt mass-flow rate; c) Charpy notched impact strength; d) flexural modulus; and on information about composition, intended application and/or method of processing, important properties, additives, colorants, fillers, and reinforcing materials. This part of ISO 19063 is applicable to all impact-resistant polystyrene plastics with a two-phase polymer system comprised of a continuous phase, consisting of polystyrene and/or a copolymer of styrene with an alkyl-substituted styrene, and a dispersed elastomeric phase based on butadiene. It applies to materials ready for normal use, unmodified or modified by colorants, additives, fillers, etc. ISO 19063-1:2015 does not apply to expandable materials. It is n