ISO 18553:2025 PDF
Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds
Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 17
- Дата публикации:
- 18 марта 2025 г.
- Издание:
- ISO IS 18553 edition 2 version 1
- ICS:
- 23.040.20
This document describes a method with two procedures for the assessment of carbon black or pigment particle and agglomerate size, and the rating of dispersion in polyolefin pipes, fittings and compounds. The method is applicable to polyolefin pipes and fittings, as well as raw material in pellet form, with the choice of procedure to be determined by the referring specification. The method is applicable to carbon black or pigmented polyolefin pipes, fittings and compounds with a carbon black content of less than 3 % by weight, and pigment content of less than 5 % by weight.
Abstract
Overview
ISO 18553:2025 specifies a laboratory method for assessing the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compound raw materials. The standard defines two preparation procedures - a microtome procedure (primary) and an optional compression procedure - and provides objective particle/agglomerate size grading and a photographic reference system for appearance rating. It applies to polyolefin products and pellets containing up to 3% carbon black or 5% pigment by weight.
Key Topics and requirements
- Scope and applicability
- Applies to polyolefin pipes, fittings and pellet compounds; choice of procedure is determined by the referring specification.
- Limits: carbon black
Технические детали
- Технический комитет
- ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
- SKU
- ISO 18553:2025
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