This test method covers the determination of the matrix solids
content and matrix content of composite material prepregs.
Volatiles content, if appropriate and required, is determined by
means of Test Method D 3530/D 3530M.
This test method focuses on thermosetting matrix material
systems for which matrix may be extracted in organic solvent.
However, other, unspecified reagents may be used with this test
method to extract other matrix material types for the same
This test method does not distinguish between hybrid
reinforcements or matrices. Its use with hybrids is limited to a
determination of total reinforcement or matrix, or the use of a
standard factor to be used as the weight of a particular
reinforcement or matrix constituent.
Alternate techniques for determining matrix and reinforcement
content include Test Methods C 613/C 613M (Soxhlet extraction) and
D 3171 (meant typically for laminates; covering matrix digestion or
The values stated in SI units are to be regarded as
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use. Specific precautionary information
is given in 8.2.4 and 8.2.5
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