<p>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:</p>
<p>— Method A: Extraction by Soxhlet;</p>
<p>— Method B: Extraction by immersion in solvent in a beaker;</p>
<p>— Method C: Decomposition by loss ignition;</p>
<p>— Method D: Extraction by wet combustion;</p>
<p>— Method E: Method by calculation.</p>
<p>This document is applicable to the following types of materials:</p>
<p>— moulding compound and preimpregnated unidirectional sheet, tape, fabric and mats;</p>
<p>— prepregs in which any type of reinforcement (aramid, carbon, glass, etc.) and any type of matrix (thermosetting or thermoplastic) has been used.</p>
<p>Typically, reinforcement fibres are coated with sizing or finishes. These normally dissolve with the resin and are, therefore, included in the resin content.</p>
<p>This document is not applicable to the following types of prepregs:</p>
<p>— those containing reinforcements which are soluble (or partly soluble) in the solvents used to dissolve the resin.</p>
Registration number (WIID)
70572
Scope
<p>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:</p>
<p>— Method A: Extraction by Soxhlet;</p>
<p>— Method B: Extraction by immersion in solvent in a beaker;</p>
<p>— Method C: Decomposition by loss ignition;</p>
<p>— Method D: Extraction by wet combustion;</p>
<p>— Method E: Method by calculation.</p>
<p>This document is applicable to the following types of materials:</p>
<p>— moulding compound and preimpregnated unidirectional sheet, tape, fabric and mats;</p>
<p>— prepregs in which any type of reinforcement (aramid, carbon, glass, etc.) and any type of matrix (thermosetting or thermoplastic) has been used.</p>
<p>Typically, reinforcement fibres are coated with sizing or finishes. These normally dissolve with the resin and are, therefore, included in the resin content.</p>
<p>This document is not applicable to the following types of prepregs:</p>
<p>— those containing reinforcements which are soluble (or partly soluble) in the solvents used to dissolve the resin.</p>
