Fiber reinforced composite materials having resin practice inter-layer zones
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United States of America Patent
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Jul 2, 1991
Grant Date -
N/A
app pub date -
Dec 24, 1987
filing date -
Dec 25, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tough laminated composite material which comprise (A) long reinforcing fibers, (B) a matrix resin mixed with the long reinforcing fibers and (C1) a resin, preferably in the form of fine resin particles, forming a phase separate from said matrix resin which is localized in inter-layer zones, wherein 90% or more of said resin (C1) is localized in inter-layer zones and/or wherein the border length factor in the inter-layer zones is 2.5 or more and prepegs used to form the composite materials.
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