Volatiles Content of Composite Prepreg (ASTM D3530)
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ASTM D3530
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Scope:
ASTM D3530 method is used to determine volatiles content of composite prepreg. Volatiles content is defined as the amount of volatiles present in a prepreg expressed as a weight percent. This standard focuses on composites with thermosetting resins that lose a few percent of the matrix mass when heated due to loss water and low molecular weight matrix constituents that volatilize during heating.
Test Procedure:
Three specimens, with a minimum cross sectional area of 1600mm2 are machined from customer supplied product. The specimens are weighed on an analytical balance to the nearest 0.1mg. The specimens are then immediately placed in an oven at the nominal cure or consolidation temperature for a period of 15 minutes. The specimens are then removed from the oven and placed in a desiccator and allowed to cool. The specimens are then reweighed. The volatiles content is calculated.
Specimen size:
Three specimens, with a minimum cross sectional areas of 1600mm2.
Data:
The volatiles content is calculated as follows: VC = (Mi – Mf) / Mi * 100
Mi=initial weight
Mf= final weight
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