ISO 36-2020 pdf free.Rubber, vulcanized or thermoplastic—Determination of adhesion to textile fabrics.
This document specifies a method of test for measuring the force required to separate, by stripping, two plies of fabric bonded with rubber, or a rubber layer and a fabric ply bonded together.
The method is applicable when the ply surfaces are approximately plane or when they are in the form of a cylinder having an internal diameter greater than approximately 50 mm. The method is not applicable when the ply surfaces contain sharp bends, angles or other gross irregularities which cannot be excluded when cutting out test pieces.
This document does not apply to coated fabrics, which are tested in accordance with ISO 2411, or textile conveyor belts, which are tested in accordance with ISO 252.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5893:2019, Rubber and plastics test equipment — Tensile, flexural and compression types (constant rate of traverse) — Specification
ISO 6133:20 15, Rubber and plastics — Analysis of multi-peak traces obtained in determinations of tear strength and adhesion strength
ISO 18899:2013, Rubber — Guide to the calibration of test equipment
ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4 Principle
The stripping force required to separate two plies of fabric bonded with rubber, or a rubber layer and a fabric ply bonded together, is measured under specified conditions using test pieces of standard dimensions in the form of a flat strip.
5 Apparatus
5.1 Test machine, power-driven and equipped with a suitable dynamometer; it shall be capable of maintaining a substantially constant rate of traverse of the moving head during the test and shall be linked to an autographic recorder or a computer with graphic capabilities for data acquisition and processing. A dynamometer without inertia (e.g. of the electronic or optical type) should preferably be used.
The machine shall comply with the requirements of Iso 5893, be capable of measuring force with an accuracy corresponding to class 1 as defined in ISO 5893:2019, and have a rate of traverse of the moving grip of 50 mm/mm ± 5 mm/mm.
The machine shall be fitted with grips capable of holding the test piece and the ply to be separated without slipping during the test.
52 Autographic recorder, with a scale sufficiently large to permit easy interpretation of the trace, or computer with graphic capabilities and software enabling it to be in accordance with the procedure for data processing described in ISO 6133.
6 Calibration
The test apparatus shall be calibrated in accordance with the schedule given in Annex A.
7 Test piece
7.1 Test piece cut from a product
The test piece shall have a width of 25 mm ± 0,5 mm and shall be of sufficient length to permit ply separation during measurement over a length of at least 100 mm. The minimum thickness of the constituent components, or of one of them, shall be such that the weakest component can transmit the force necessary for separation without breaking.
The test piece shall be cut in a plane parallel to the warp in the length direction and parallel to the welt in the width direction.
If required, also cut test pieces in a plane parallel to the weft in the length direction and parallel to the warp in the width direction.ISO 36 pdf download.
Tags: Rubber, vulcanized or thermoplastic
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