Plastics; Polystyrene moulding and extrusion materials; Part 2 : Determination of properties

This document outlines the specifications for evaluating the properties of plastics, specifically focusing on polystyrene materials processed through molding and extrusion methods. It forms part of a series dedicated to establishing consistent testing protocols for polymer products. The standard defines the precise procedures required to measure various physical and mechanical characteristics of polystyrene. These tests cover critical aspects such as density, moisture content, and shrinkage, ensuring that manufacturers and users can assess material quality with reliability. By providing a unified framework for these measurements, the text facilitates comparison across different laboratories and production batches. The guidelines address sample preparation, testing conditions, and calculation methods necessary for obtaining accurate data. This approach supports quality control processes within the plastics industry, allowing stakeholders to verify that materials meet specific performance criteria. The methodology described ensures that results are reproducible and objective, serving as a foundational reference for technical assessments in material science and engineering applications involving polystyrene.