ISO 10352:2020 pdf download

ISO 10352:2020 pdf download.Fibre-reinforced plastics — Moulding compounds and prepregs — Determination of mass per unit area and fibre mass per unit area
1 Scope
This document specifies a method for the determination of the mass per unit area. It also specifies five methods (Method A to Method E) for the determination of the fibre mass per unit area of moulding compounds and prepregs. The five methods are as follows:
— Method A: Extraction by Soxhlet;
— Method B: Extraction by immersion in solvent in a beaker;
— Method C: Decomposition by loss ignition;
— Method D: Extraction by wet combustion;
— Method E: Method by calculation.
This document is applicable to the following types of materials:
— moulding compound and preimpregnated unidirectional sheet, tape, fabric and mats;
— prepregs in which any type of reinforcement (aramid, carbon, glass, etc.) and any type of matrix (thermosetting or thermoplastic) has been used.
Typically, reinforcement fibres are coated with sizing or finishes. These normally dissolve with the resin and are, therefore, included in the resin content.
This document is not applicable to the following types of prepregs:
— those containing reinforcements which are soluble (or partly soluble) in the solvents used to dissolve the resin.
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 291, Plastics — Standard atmospheres for conditioning and testing
ISO 472, Plastics — Vocabulary
ISO 1889, Reinforcement yarns — Determination of linear density
ISO 4602, Reinforcements — Woven fabrics — Determination of number of yarns per unit length of warp and weft
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 elementary unit
individual sample roll, sheet or pack which is intended for the measurement of the mass per unit area using this document
Note 1 to entry: Prepregs are usually supplied in rolls or in packs of sheets. In this context, an individual roll or pack of sheets is an elementary unit.
3.2 laboratory sample
sample taken from an elementary unit (3.1)
3.3 test specimen
specimen cut from a laboratory sample (3.2)