2. Short-fiber TP compounds (SFT)
2.1 Compound manufacturing
The high viscosity of TP resins explains the compounding technology used, i.e. extrusion/granulation compounding which, thanks to the action of heat and the high shear forces developed by the compounding screw(s), leads to homogeneous dispersion and a good level of impregnation of the reinforcing fibers by TP resins.
Several compounding methods exist, depending essentially on how the glass fibers are introduced. The most widely-used method to date involves separate dosing on a twin-screw extruder (figure 1 ), with the resin being fed into the extruder inlet (zone 1), followed by the reinforcement in the...
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Short-fiber TP compounds (SFT)
Long-fibre TP compounds and sheets (LFT and TRE)
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