Moulding material for composite panels
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United States of America Patent
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Dec 22, 2020
Grant Date -
Feb 15, 2018
app pub date -
Mar 10, 2016
filing date -
Mar 10, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention describes a prepreg for the manufacture of fibre reinforced resin matrix composite materials, the prepreg comprising: a surface film comprising a thermosetting resin and a particulate filler material dispersed therein, and a fibrous layer on which the surface film is disposed, the fibrous layer comprising a plurality of non-woven carbon fibres which are substantially randomly oriented, wherein the fibrous layer has interstices between the carbon fibres dimensioned for absorbing at least a portion of the thermosetting resin during a resin infusion step and filtering at least a portion of the particulate filler material in the surface film to remain in the surface film during the resin infusion step.
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