BS EN ISO 22970:2020 - Paints and Varnishes Adhesion Test Method

Discover the comprehensive standard BS EN ISO 22970:2020, a pivotal document for professionals in the coatings and adhesives industry. This standard provides a detailed methodology for evaluating the adhesion of elastic adhesives on coatings, ensuring that your products meet the highest quality and performance standards.

Overview

Released on December 21, 2020, this standard is a must-have for anyone involved in the development, testing, or application of paints and varnishes. With a total of 30 pages, it offers an in-depth exploration of various test methods, including the peel test, peel strength test, and tensile lap-shear strength test. These tests are crucial for assessing the durability and reliability of adhesive bonds under different conditions.

Key Features

• Standard Number: BS EN ISO 22970:2020
• ISBN: 978 0 539 14056 9
• Status: Standard

Detailed Test Methods

The standard outlines several critical test methods designed to evaluate the adhesion properties of elastic adhesives:

• Peel Test: This test measures the force required to peel an adhesive from a substrate, providing insights into the adhesive's strength and flexibility.
• Peel Strength Test: A more detailed analysis of the adhesive's ability to withstand peeling forces, crucial for applications where durability is paramount.
• Tensile Lap-Shear Strength Test: This test evaluates the adhesive's shear strength, ensuring that it can maintain its bond under tensile stress.

Additional Stress Testing

To ensure comprehensive evaluation, the standard includes additional stress tests such as:

• Condensation Test: This test simulates the effects of moisture and humidity on adhesive bonds, critical for applications in challenging environmental conditions.
• Cataplasm Storage: A unique test that assesses the adhesive's performance after being subjected to prolonged exposure to moisture, ensuring long-term reliability.

Why Choose BS EN ISO 22970:2020?

Adhering to this standard ensures that your products are tested against rigorous international benchmarks, providing confidence in their performance and durability. Whether you are a manufacturer, quality control specialist, or researcher, this standard is an invaluable resource for ensuring that your coatings and adhesives meet the highest industry standards.

Applications

This standard is applicable across a wide range of industries, including automotive, aerospace, construction, and consumer goods. It is particularly beneficial for:

• Product Development: Ensuring that new adhesives and coatings meet stringent performance criteria before market release.
• Quality Assurance: Providing a reliable framework for testing and validating product quality.
• Research and Development: Offering a foundation for innovative research into new adhesive technologies and applications.

Conclusion

Invest in the BS EN ISO 22970:2020 standard to elevate your understanding and application of adhesive technologies. With its comprehensive guidelines and rigorous testing methods, this standard is an essential tool for ensuring the quality and reliability of your products in the competitive coatings and adhesives market.

BS EN ISO 22970:2020

This standard BS EN ISO 22970:2020 Paints and varnishes. Test method for evaluation of adhesion of elastic adhesives on coatings by peel test, peel strength test and tensile lap-shear strength test with additional stress by condensation test or cataplasm storage is classified in these ICS categories:

• 87.040 Paints and varnishes

This document specifies three methods for testing the peel adhesion, peel strength and tensile lap-shear strength in order to evaluate the adhesive bond as well as the type, location and structure of failures of elastic adhesives on coatings. These methods are used, for example, for testing the assembly with respect to the bond of panes or built-on parts, such as plastic covers, spoilers, instrument panel covers, headlights, with coatings for automobile construction. The two methods of climatic exposure of specimens described herein are the condensation test and cataplasm storage.

This document does not specify requirements for adhesives and coatings.

NOTE The peel strength test (method B) for rigid car body construction adhesives is described in ISO 8510‑2. The tensile lap-shear strength test (method C) for rigid car body construction adhesives is described in EN 1465. Testing of rigid car body construction adhesives is generally conducted on small joint thicknesses, i.e. <1 mm.