GB/T 43747-2024Evaluation of adhesion properties of sealants - Strip peel method (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is modified to adopt ISO 23658:2020 "Testing the adhesion of sealants for building and civil engineering - Peel test".

Compared with ISO 23658:2020, this document has many structural adjustments. Comparison table of structural number changes between the two documents See Appendix A.

This document has many technical differences compared to ISO 23658:2020.

A single line (|) is used to indicate these technical differences. A list of these technical differences and their reasons is given in Appendix B.

The following editorial changes were made to this document.

--- In order to coordinate with the existing standards, the name of the standard is changed to "Evaluation of sealant adhesion - Strip peeling method";

--- Deleted the examples in aging simulation (see Chapter 7) to adapt to my country's national conditions;

---Removed references.

1 Scope

This document describes the minimum elongation at break greater than 25% of the sealant and various substrates (including but not limited to. glass, aluminum, aluminum-plastic panels, Test method for adhesion of plastics (stone, etc.).

This document is applicable to the evaluation of sealant adhesion using the strip peeling method.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 2943 Adhesive Terminology GB/T 16997 Method for expressing the main failure types of adhesives (GB/T 16997-1997, ISO 10365:1992, IDT) GB/T 21526 Guidelines for surface preparation of metals and plastics before bonding with structural adhesives GB/T 33403 Test method for self-leveling properties of adhesives

3 Terms and definitions

The terms and definitions defined in GB/T 2943 and GB/T 33403 apply to this document.

4 Principle

The sealant is applied to the substrate and after curing under specified conditions or specific aging conditions, the sealant sample is peeled off the substrate with a handheld tool.

Separate the sealant from the substrate and test the adhesion of the sealant to the substrate, and record the type of sealant failure.

5 Specimen preparation