ISO 4637:1979

Name: ISO 4637:1979 — Rubber-coated fabrics — Determination of rubber-to-fabric adhesion — Direct tension method
SKU: ISO 4637:1979
Price: 25 EUR
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Rubber-coated fabrics — Determination of rubber-to-fabric adhesion — Direct tension method

Название (английский):

ISO 4637:1979

Rubber-coated fabrics — Determination of rubber-to-fabric adhesion — Direct tension method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 3
Дата публикации:: 1 декабря 1979 г.
Издание:: ISO IS 4637 edition 1 version 1
ICS:: 59.080.40

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Описание (английский):

Only suitable when the material to be tested is substantially uniform in thickness and flat or sufficiently flexible to remain flat in case of slight compression. Particularly suitable for materials having a very thin rubber layer which are difficult to test by stripping or peeling methods. However, it should be noted that the results obtained by this method will not necessarily correlate with those obtained by a stripping test. A figure shows the prepartion of test assembly.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 4637:1979 specifies the direct tension method for determining rubber-to-fabric adhesion of rubber-coated fabrics. The method is intended for materials that are substantially uniform in thickness and flat (or sufficiently flexible to remain flat under slight compression). It is particularly useful for materials with very thin rubber coatings that are difficult to evaluate by stripping or peeling tests. Note that results from this direct tension method do not necessarily correlate with stripping or peeling test results.

Key topics and technical requirements

Scope and limitation: Suitable only for flat, uniform samples; best for very thin rubber layers.

Test principle: Metal cylinders bonded to opposing faces of a small test piece; tensile load applied along the cylinder axis until separation.

Specimen size & conditioning:

Test piece: square, approx. 32 mm lateral dimension.
Condition specimens for at least 24 h in a standard laboratory atmosphere per ISO 2231; maintain same conditions for comparable tests.

Apparatus & consumables:

Tensile testing machine with self-aligning jaws; jaw separation rate 50 ± 5 mm/min; force measurement accuracy ±2%.
Two metal cylinders (preferably aluminium): 25 ± 0.5 mm diameter, ~50 mm long, flat endsurface with Ra ≤ 0.80 µm (ISO/R 468).
Ethyl cyanoacrylate adhesive: viscosity 75–100 mPas at 25 °C; minimum bond strength to the metal ~14 MPa (direct tension).
600-grit abrasive paper, forceps, jig for cylinder alignment, 1 kg weight for axial load during cure.

Preparation & procedure:

Degrease cylinders (trichloroethylene), abrade and clean; degrease test piece (1% ammonium hydroxide in acetone), handle with forceps only.
Bond cylinders using specified adhesive with controlled application, align in jig, apply weight, allow 16–24 h cure in standard atmosphere.
Test in tensile machine; record maximum force at failure and inspect failure mode.

Results & reporting:

Report force at failure (kilonewtons) as the median of five acceptable tests.
Record mode of failure as C (cohesive in rubber) or RF (rubber/fabric adhesive failure).
Include sample details, test method reference (ISO 4637), lab conditions, and date.

Applications and users

Used by R&D labs, quality control, and manufacturers of rubber-coated fabrics, technical textiles and coated materials to evaluate bond strength where peeling tests are impractical.

Valuable for procurement/specification, failure analysis, and material development when assessing adhesion of thin rubber layers.

Related standards

ISO 2231 - standard laboratory atmospheres for conditioning and testing

ISO/R 468 - surface roughness measurement

ISO/R 36 - referenced stripping test for comparison (adhesion strength of vulcanized rubbers to textiles)

Keywords: ISO 4637, rubber-to-fabric adhesion, rubber-coated fabrics, direct tension method, adhesion testing, coated fabrics tests.

ISO 4637:1979

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

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