热塑性复合介绍.ppt

Recent Developments in High-Performance Thermoplastic Composites Allan Murray, Ecoplexus Inc. Klaus Gleich, Southern Research Institute ACCE 2003 Overview Introduction Materials Process Technology Applications Thermoplastic Composites Benefits Unique properties Vibration dampening Light weight Potential for low cost Shelf life Recyclable Durability Fatigue Corrosion Toughness Limitations Cost Materials Manufacturing Tooling Design know-how Manufacturing know-how Use temperature Thermoplastic Composites Many Polymer Options Polyethylenes Polypropylenes Nylons Polycarbonates Acrylics Polyesters Polyimides Polysulfones Polyketones Polyurethanes the list continues Many Property Options ultimate strain 100% no microcracking no delamination dampening no water uptake low dielectric properties melt formable weldable elastomeric - plastic - elastic behavior the list continues Cost Challenge High-Performance Thermoplastic Composites Properties are fiber dominated Oriented long or continuous fiber reinforcement High volume fiber fraction (up to 65% by volume) Key benefits: Reducing thermal limitations (e.g. creep) caused by the TP matrix system Reducing costs and weight and retaining toughness, formability, weldability, short cycle times, recyclability benefits of the thermoplastic matrix Thermoplastic Materials Commercial Materials GMT (Glass Mat Reinforced Thermoplastics) Pultruded Products LFT (Long Fiber Reinforced Thermoplastics) CFT (Continuous Fiber Reinforced Thermopastics) Wire coated products Commingled fibers Powder coated materials Film sticking Slurry processes Pilot Production for Thermoplastic Composites Short Fiber, Long Fiber and Continuous Fiber Composites Typical Pultruded Prepregs Fiber: E-glass, S-glass, Carbon, Aramid, polymer fibers Matrix: PE, PP, PA (6, 6/66, 12, …), PET, PBT, PC, PEI, PPS, SMA, blends, … Fiber content: 20% - 60% standard, some up to 84% Product forms: Tape, pellets (0.5