This test method can be used to obtain the fiber content, fiber areal weight, matrix content or matrix solids content. Knowledge of these results is useful in specifying material systems and in developing optimum manufacturing processes. Where volatiles content is consistent and not critical to process, matrix content shall be used.

This test method is limited to reinforcement constituents that do not change mass upon exposure to the matrix removal procedure and limited to matrix constituents that are fully removed by the matrix removal procedure. In the event of experiencing either limitation, an agreement should be reached with the end-user as to how to proceed.

1. Scope

1.1 This test method covers the determination of the fiber content, fiber areal weight, matrix solids content and matrix content of composite material prepregs. Optionally, the matrix solids content can also be determined after a volatiles content has been established. Volatiles content, if appropriate and required, is determined by means of Test Method D3530/D3530M.

1.2 Procedure A of this test method applies to composite prepreg of primarily thermosetting matrices that can be extracted in organic solvent. The reinforcement and filler must be substantially insoluble in the selected extraction reagent. This procedure may also be used for the same purposes to extract other matrix material types.

1.3 Procedure B of this test method uses ignition loss of a composite prepreg matrix and applies to organic matrix composite systems containing reinforcing fibers that do not change mass when exposed to the matrix combustion method.

1.4 This test method assumes a two-part material system (plus volatiles) and does not distinguish between hybrid reinforcements or matrices. Use with hybrid composites is limited to determination of total reinforcement or total matrix content.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C613/C613M Test Method for Constituent Content of Composite Prepreg by Soxhlet Extraction

D883 Terminology Relating to Plastics

D3171 Test Methods for Constituent Content of Composite Materials

D3530/D3530M Test Method for Volatiles Content of Composite Material Prepreg

D3878 Terminology for Composite Materials

E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

E1309 Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases

NFPA Standard

Keywords

composite materials; fiber content; fiber areal weight; matrix content; matrix solids content; prepreg; resin content; resin solids content; Composites; Matrix solids cotent; Prepregs; Resin matrix composites; Carbon fiber-epoxy prepregs; Resins (composite); Solid phase materials ;

ICS Code

ICS Number Code 83.120 (Reinforced plastics)

Citing ASTM Standards

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