Material Analysis
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PI composite resin impregnation
Problem Phenomenon
When preparing PI prepreg, the resin insufficiently impregnates the fibers
Cause Analysis
PI precursor solution viscosity is high and does not easily penetrate fiber bundles; the fiber surface treatment is not compatible with the PI precursor
Solution
Reduce the viscosity and concentration of the precursor solution; select a fiber sizing agent compatible with PI; use solution impregnation or hot melt method
Key Takeaway
The quality of PI composites starts with the impregnation quality of the prepreg
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