Material Analysis
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Sedimentation of carbon fiber in resin
Problem Phenomenon
Carbon fibers settle in the resin in short fiber composite materials, causing uneven distribution
Cause Analysis
The density difference between carbon fiber and resin is large (CF~1.8 vs resin~1.2); resin viscosity is too low
Solution
Increase resin viscosity; accelerate curing to reduce sedimentation time; fiber surface treatment
Key Takeaway
Carbon fiber sedimentation causes composite material performance gradients
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