Reference number ISO 22314:2006(E)
INTERNATIONAL STANDARD ISO 22314
First edition 2006-05-01
Plastics — Glass-fibre-reinforced
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products — Determination of fibre length
Plastiques — Produits renforcés de fibres de verre — Détermination de la longueur des fibres
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ISO 22314:2006(E)
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ISO 22314:2006(E)
ppt音效Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standar
ds bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be reprented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates cloly with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 22314 was prepared by Technical Committee ISO/TC 61, Plastics , Subcommittee SC 13, Composites and reinforcement fibres .
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ISO 22314:2006(E)
Introduction
There is global interest in the determination of the length of glass fibres in all types of composite, to predict their characteristics (esntially mechanical ones). For the determinations, three steps are necessary: ⎯ paration of the fibres from the composite; ⎯ dispersion of the fibres to obtain individual fibres; ⎯ measurement of their length.
After considering all the existing methods for parating the fibres from the resin, it was decided to develop the propod method only for short glass fibres from thermoplastic resins, extracted by calcination.
The principles of the method are probably suitable for other composites, but it would need more development to obtain a method suitable for other conditions (thermot resins, long fibres in thermoplastic or thermot resins, carbon fibres).
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INTERNATIONAL STANDARD ISO 22314:2006(E) Plastics — Glass-fibre-reinforced products — De
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of fibre length
1 Scope
This International Standard specifies a method of determining the length of the fibres prent in a fibre-reinforced product. The method is applicable to moulding materials and to moulded parts. The test conditions specified limit the application of this method to thermoplastics reinforced with short glass fibres (less than
1 mm long), i.e. fibres who length is less than or equal to 7,5 mm prior to incorporation in the moulding
material and moulding.
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2 Normative references
The following referenced documents are indispensable for the application 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 472, Plastics — Vocabulary
ISO 1172, Textile-glass-reinforced plastics — Prepregs, moulding compounds and laminates — Determination of the textile-glass and mineral-filler content — Calcination methods
3 Terms and definitions
For the purpo of this document, the terms and definitions given in ISO 472 apply.
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4 Principle
The fibres are parated from the reinforced polymer and their length measured from a magnified image on a screen.
5 Apparatus
5.1 Muf f le furnace, capable of maintaining a temperature of 625 °C ± 25 °C.
5.2 Crystallizing
dish, diameter 80 mm to 110 mm.
5.3Ultrasonic device.
NOTE A basic ultrasonic device, like tho ud in laboratories for cleaning purpos, has been found suitable.
5.4 Microscope or stereoscope (with fixed or variable magnification factors), equipped with a video
camera, giving at least × 50 magnification.
warm名词5.5 Image acquisition device, that enables the image to be displayed on a TV monitor.
