Common test methods for insulating and sheathing materials of electric and optical cables. Part 4-1. Methods specific to polyethylene and polypropylene compounds. Resistance to environmental stress cracking. Measurement of the melt flow index. Carbon blac

This document outlines general test methods for materials used in the insulation and sheathing of cables and optical cables. It specifically addresses part 4-1, which covers specialized methods for polyethylene and polypropylene compounds. The content includes procedures for determining resistance to environmental stress cracking, measurement of melt flow index, and the assessment of carbon black. The methods described are intended to ensure the quality and performance of these materials under various conditions. The document provides detailed instructions for conducting these tests, ensuring consistency and reliability in the evaluation process. It serves as a reference for laboratories and manufacturers involved in the production and testing of cable and optical cable materials. The procedures are designed to be applicable across different applications where these materials are used.