ISO 6964 is an international standard that specifies a method for determining the carbon black content in polyolefin pipes and fittings by means of pyrolysis. This is an important parameter in the manufacturing process of plastic pipes, as carbon black is commonly added to polyolefins such as polyethylene (PE) and polypropylene (PP) to improve their resistance to ultraviolet (UV) light, thereby enhancing the material's durability and performance during outdoor use. The standard defines the procedure for isolating and quantifying the carbon black by heating a sample in a nitrogen atmosphere, causing the polyolefin to decompose and leaving behind the carbon black residue. The accuracy of this measurement is critical for ensuring that the finished pipe meets required specifications and performs reliably during its intended service life.
In the plastic pipe industry, compliance with ISO 6964 is essential for manufacturers, quality control laboratories, and regulatory bodies who need to verify the correct formulation of pipes and fittings. Adhering to this standard ensures that the proper quantity of carbon black is present, which can affect not only the long-term stability of the pipe but also its appearance and mechanical properties. The standardized method allows producers across different regions and sectors to apply consistent testing protocols, enabling transparent quality assessment and improving comparability of results. SCITEQ provides test equipment designed in accordance with ISO 6964, supporting precise sample preparation, controlled pyrolysis, and reliable measurement of carbon black content according to the procedures outlined in the standard. This helps manufacturers maintain product quality and comply with internationally recognized testing requirements.
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