连续纤维增强热塑性复合材料-精品ppt.ppt

*********************************************  Continuous Fiber Reinforced Thermoplastic Composites (CFRT) Gavin Zhang 2013 SFT: Short fiber reinforced thermoplastic materials. Chopped glass fiber compounded into the polymer matrix. LFT: Granular thermoplastic materials produced in a process where reinforcing fiber length equals granule length. CFRT: Continuous fiber reinforced thermoplastic materials 1. Introduction of CFRT Effect of fiber length on mechanical properties of glass fiber reinforced PA66 Property PA66 (GF:0%) SFT-PA66 (GF:50%) LFT-PA66 (GF:50%) CFRT-PA66 (GF:50%) Tensile strength (MPa ) 70 192 254 400 Tensile modulus (GPa ) 2.8 18 21.8 Flexural strength (MPa ) 100 295 405 590 Flexural modulus (GPa ) 2.4 11.4 17 22.8 Advantages of CFRT 1.High strength (Take advantage of the full strength of the reinforcing fibers) 2.High impact resistance 3.Lightweight 4.Recyclable 5.Resistant to rot, corrosion and mildew 6.Design Flexibility  Applications Marketing future “The market for continuous fiber reinforced thermoplastic composites has experienced exceptional growth in recent years with a global growth rate of 105% in last 5 years. The growth rate in 2002 was 93%.” “Historically, continuous fiber reinforced thermoplastic composites were used in niche applications in aerospace and defense market. But in recent years, the market has exploded in automotive, sporting, transportation, industrial and other applications. Demand has been driven by a variety of aerospace, automotive and truck applications. “ Report Information Opportunities in Continuous Fiber Reinforced Thermoplastic Composites 2003-2008 Raw materials Broad possibilities Melt impregnation Commingling Powder impregnation Co-weaving Solvent impregnation In situ polymerization 2.Impregnation methods 2.1 Melt impregnation US patent 5,529,652; US patent 6,251,206b1 1.extruder 2.casing 3.rotary screw 4.heater 5.crosshead 6.fiber bundle 7.cavity 8.inlet unit 9. resin chamber 10.outlet nozzl