SIST EN ISO 2812-4:2018 PDF

Name: SIST EN ISO 2812-4:2018 — Paints and varnishes - Determination of resistance to liquids - Part 4: Spotting methods (ISO 2812-4:2017)
SKU: SIST EN ISO 2812-4:2018
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Paints and varnishes - Determination of resistance to liquids - Part 4: Spotting methods (ISO 2812-4:2017)

Название (английский):

SIST EN ISO 2812-4:2018

Paints and varnishes - Determination of resistance to liquids - Part 4: Spotting methods (ISO 2812-4:2017)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 14 февраля 2018 г.
ICS:: 87.040
Технический комитет:: IBLP - Paints and varnishes

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Срок поставки:3 раб. дн. (перевод)

Цена:210 €

Описание (английский):

ISO 2812-4:2017 specifies spotting methods for determining the resistance of an individual-layer or multi-layer system of coating materials to the effects of liquids or paste-like products. These methods enable 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 2812-4:2017 - Paints and varnishes: Determination of resistance to liquids - Part 4: Spotting methods specifies standardized spot-test procedures to assess how single- or multi-layer coating systems resist contact with liquids or paste‑like substances. The standard describes test principles, required apparatus, sample preparation, two practical spotting methods (horizontal and inclined), conditioning and evaluation steps, and reporting requirements. It is part of the ISO 2812 series and is adopted by CEN for use across European national standards bodies.

Keywords: EN ISO 2812-4:2017, spotting methods, resistance to liquids, coatings testing, paint test, liquid resistance.

Key topics and requirements

Scope and purpose: Determines the effect of liquids/pastes on coatings and, where relevant, assesses substrate damage.

Test principle: Apply controlled droplets or spots of test substance on coated panels, confine them, condition, then evaluate changes.

Apparatus & materials: Typical lab equipment - pipette (~0.1 ml droplet), 50 ml burette, 60 mm Petri dishes, collecting vessel for inclined tests.

Test panels: Standard panels (approx. 150 × 100 mm; 0.7–1.0 mm thick) prepared and coated per ISO 1514; dry film thickness measured per ISO 2808.

Conditioning & environment: Condition panels ≥16 h at (23 ± 2) °C and (50 ± 5) % RH; perform tests at (23 ± 2) °C (ISO 3270).

Two methods:

Method A - Horizontal panel: Apply droplets or ~0.5 cm paste, cover with Petri dishes; perform duplicate tests.
Method B - Inclined panel: Panel at 30°; apply droplets at 1–2 s intervals for 10 min so liquid flows; perform duplicate tests.

Evaluation: Clean residues, assess exposed area only, evaluate blistering (ISO 4628-2) and visible alterations (ISO 4628-1); optionally perform further tests (cross-cut, hardness). Reassess after 24 h; repeat duplicates if inconsistent.

Reporting: Record test conditions, substances, panel preparation, results and any repeat determinations.

Applications and users

Quality control laboratories verifying product performance against chemical or cleaning fluids.

Coatings formulators and R&D teams screening formulations for resistance to oils, solvents, acids, alkalis, cleaning agents and paste-like contaminants.

Specifiers, certifiers and procurement teams defining performance requirements for industrial, architectural or protective coatings.

Independent test houses performing contract testing for manufacturers and end‑users.

Keywords: coatings durability, paint resistance testing, spot test, quality control, coatings R&D.

Related standards

ISO 1513 - Sample preparation

ISO 1514 - Standard test panels

ISO 2808 - Film thickness measurement

ISO 3270 - Conditioning temperatures/humidities

ISO 4618 - Terms and definitions

ISO 4628-1 / ISO 4628-2 - Evaluation of degradation (visual scoring)

ISO 15528 - Sampling

Use EN ISO 2812-4:2017 when you need a reproducible, widely accepted spot-testing method for assessing how coatings withstand localized liquid exposure.

SIST EN ISO 2812-4:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 2812-4:2017

Paints and varnishes — Determination of resistance to liquids — Part 4: Spotting methods

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Paints and varnishes. Determination of resistance to liquids. Immersion in liquids other than water.

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