SIST EN ISO 7783:2018 PDF
Paints and varnishes - Determination of water-vapour transmission properties - Cup method (ISO 7783:2018)
Paints and varnishes - Determination of water-vapour transmission properties - Cup method (ISO 7783:2018)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 26
- Дата публикации:
- 19 ноября 2018 г.
- ICS:
- 87.040
- Технический комитет:
- IBLP - Paints and varnishes
This document specifies a method for determining the water-vapour transmission properties of coatings of paints, varnishes and related products. It supplements ISO 12572. As far as possible, the procedure, the definitions and the calculations have been taken over from ISO 12572. ISO 12572 can be consulted, if necessary, to obtain a better understanding of the procedure specified in this document. Water-vapour transmission rates of more than 680 g/(m2⋅d) (i.e. water-vapour diffusion-equivalent air layer thicknesses, sd, of less than 0,03 m) are not accurately quantified by the test method described in this document.
Abstract
Overview
EN ISO 7783:2018 - "Paints and varnishes - Determination of water‑vapour transmission properties - Cup method" is a CEN‑adopted ISO standard that specifies the cup test procedure for measuring the water‑vapour transmission of coatings (paints, varnishes and related products). The document covers both self‑supporting films and non‑self‑supporting coatings applied to substrates, supplements ISO 12572 for definitions and calculations, and designates the wet‑cup method as the reference procedure.
Key topics and requirements
- Scope and limits: Applies to coatings where water‑vapour transmission can be assessed by the cup method. Results above 680 g/(m2·d) (equivalent to diffusion‑equivalent air layer thickness sd
Технические детали
- SKU
- SIST EN ISO 7783:2018
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