Fiber skeleton delivers new standard of performance in metal replacement
Solvay’s Long Fiber Thermoplastics (LFT) are innovative long-fiber reinforced structural products that target challenging metal replacement applications and semi-structural applications. They are designed specifically to achieve maximum synergy between: high performance, design freedom, functions integration, weight reduction and per-part cost economy through fast cycle times.
Solvay LFT materials are created using a pultrusion process, where continuous reinforcement fiber strands are impregnated with plastic resin and trimmed to the targeted granulate length of typically, 7 to 9 mm. These materials are reinforced with glass fibers, the length of which corresponds to the granulate length.
The function of LFT’s is to create, during the injection molding process, a unique 3D entangled long glass fiber network inside the molded part (shown below). This glass fiber network really forms a strong fiber skeleton, which ensures an optimal dimensional stability and significantly improves the thermal-mechanical properties compared to traditional highly filled short-fibers plastics.
LFT products can be processed on commercial standard injection-molding equipment. Simply, low shear conditions must be preferred in order to minimize unnecessary fiber filament breakage.
Solvay’s LFT compounds are available in dried form, shipped in ready-to-use octabins and in 25kg plastic bags.
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Long Fiber Omnix® LF HPPA property improvement
Improvement expressed in % vs. standard short-fiber reinforced Omnix® (Tg = 80°C) at same GF loading
Long Fiber Amodel® PPA property improvement
Improvement expressed in % vs. standard short-fiber reinforced PPA at same GF loading
Tensile creep at 150 °C and 60 MPa load – strain chart
Graph compares strain evolution of specimen maintained under load for standard short fiber reinforced
Omnix® HPPA and Omnix® LF HPPA long fiber grade at same glass fiber loading.
Falling weight impact test
PTI-CEAST - 23°C - 25,2kg from 1m at 4,4 m/s