EN ISO 2812-5:2018 PDF

Name: EN ISO 2812-5:2018 — Paints and varnishes - Determination of resistance to liquids - Part 5: Temperature-gradient oven method (ISO 2812-5:2018)
SKU: EN ISO 2812-5:2018
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Paints and varnishes - Determination of resistance to liquids - Part 5: Temperature-gradient oven method (ISO 2812-5:2018)

Название (английский):

EN ISO 2812-5:2018

Paints and varnishes - Determination of resistance to liquids - Part 5: Temperature-gradient oven method (ISO 2812-5:2018)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 12 сентября 2018 г.
Издание:: CEN EN 2812 edition 2 version 1
ICS:: 87.040

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Описание (английский):

This document specifies a method, using a temperature-gradient oven, for determining the resistance of an individual-layer or multi-layer system of coating materials to the effects of liquids or paste-like products. This method enables the testers to determine the effects of the test substance on the coating and, if necessary, to assess the damage to the substrate.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 2812-5:2018 - Paints and varnishes: Determination of resistance to liquids - Part 5: Temperature‑gradient oven method - specifies a laboratory procedure to evaluate how individual-layer or multi-layer coating systems resist exposure to liquids or paste-like products. The method uses a temperature-gradient oven to apply a controlled thermal gradient beneath coated test panels while droplets of test substances are applied, enabling assessment of coating degradation and, if necessary, damage to the substrate.

Key topics and technical requirements

Test principle: apply droplets of the test substance to a coated panel, expose the panel in a temperature-gradient oven, then assess effects.

Gradient oven: must generate a linear temperature gradient along the panel and limit transverse variation (maximum gradient over the panel width ≤ 2.5 °C). Heat is applied from the bottom for homogeneous transfer.

Typical test settings (as specified unless otherwise agreed):

Oven gradient: 35 °C to 80 °C, with a linear increase of 1 °C per 1 cm along the panel.
Exposure time: 30 minutes.
Droplet volume: 25 µL to 100 µL (use a metering pipette).
Test panel dimensions: nominally 560 mm × 100 mm, substrate thickness 0.7–1.0 mm (steel unless agreed otherwise).
Conditioning: panels conditioned for at least 16 h at (23 ± 2) °C and (50 ± 5)% RH (ISO 3270).

Measurements and evaluation: determine dry film thickness (ISO 2808), assess visual effects (reference to ISO 13076 for lighting and visual procedure), and wipe/clean panel after exposure before assessment.

Limitations: temperature and humidity strongly influence results; any deviations must be agreed and reported.

Applications and practical value

Useful for coating manufacturers, test laboratories, R&D teams, quality control, specifiers, and certification bodies who need to:

Screen liquid resistance of paints, varnishes and coating systems.
Compare formulations or curing regimes under a controlled thermal gradient.
Evaluate potential substrate damage after exposure to chemicals, oils, cleaners or paste-like products.
Support product data sheets, conformity testing, and durability assessments.

Related standards

ISO 1513, ISO 1514, ISO 2808, ISO 3270, ISO 4618, ISO 13076, ISO 15528 - referenced for sample preparation, panel preparation, film thickness, conditioning, terminology, lighting/visual assessment and sampling.

Keywords: EN ISO 2812-5:2018, temperature-gradient oven, resistance to liquids, paints and varnishes, coating durability, liquid resistance test, gradient oven method.

EN ISO 2812-5:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

Технические детали

ISO 2812-5:2018

Paints and varnishes — Determination of resistance to liquids — Part 5: Temperature-gradient oven method

SIST EN 23270:1997

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BS EN ISO 13076:2019

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SIST EN ISO 4618:2023

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BS EN ISO 15528:2020

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