ISO/TS 23927:2024

Laminates and moulding compounds — Prepregs — Determination of tack

This document specifies the test method for determining the tack in prepregs under defined conditions. This document is applicable to but not limited to unidirectional and multidirectional thermoset based prepregs made with glass fibres, carbon fibres, aramid fibres and other similar fibres included.

Stratifiés et composés à mouler — Préimprégnés — Détermination du tack

General Information

• Status: Published
• Publication Date: 21-Mar-2024
• ICS: 83.120 - Reinforced plastics
• Technical Committee: ISO/TC 61/SC 13 - Composites and reinforcement fibres
• Drafting Committee: ISO/TC 61/SC 13/WG 2 - Laminates and moulding compounds
• Current Stage: 6060 - International Standard published
• Start Date: 22-Mar-2024
• Due Date: 09-Dec-2023
• Completion Date: 22-Mar-2024

Standards Content (Sample)

Technical
Specification
ISO/TS 23927
First edition
Laminates and moulding
2024-03
compounds — Prepregs —
Determination of tack
Stratifiés et composés à mouler — Préimprégnés —
Détermination du tack
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 2
5.1 Probe .3
5.2 Support platen .3
5.3 Force measurement system .3
5.4 Tension/compression testing machine .4
5.4.1 General .4
5.4.2 Test speed .4
5.4.3 Recording of data .4
6 Test specimens . 4
7 Number of test specimens . 4
8 Conditioning . 4
9 Procedure . 4
9.1 Test atmosphere .4
9.2 Probe setting .4
9.3 Specimen seating .4
9.4 Test .5
9.4.1 General .5
9.4.2 Contacting the specimen .5
9.4.3 Measurement of the tack force.5
10 Expression of result . 6
10.1 Tack .6
10.2 Tack strength .6
11 Test report . 6
Annex A (informative) Determination of tack — Example . 7
Annex B (informative) Example of a probe and a self-aligning jig. 8
Bibliography .10

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites
and reinforcement fibres.
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iv
Introduction
Tack is an important property of prepregs that relates to the integrity of the composite laminate being
produced. The practice of determining tack in prepregs is mostly qualitative as it is often done by the
experience of the personnel involved. On the other hand, in some automated manufacturing using prepregs,
tack needs to be measured as a part of the manufacturing process. This document is intended to provide
standing alone quantitative method for the measurement of tack in prepregs.

v
Technical Specification ISO/TS 23927:2024(en)
Laminates and moulding compounds — Prepregs —
Determination of tack
1 Scope
This document specifies the test method for determining the tack in prepregs under defined conditions.
This document is applicable to but not limited to unidirectional and multidirectional thermoset based
prepregs made with glass fibres, carbon fibres, aramid fibres and other similar fibres included.
2 Normative referenc
...