连续纤维增强热塑性复合材料.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,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 nozzle unit 11.main body 12overflow opening 13.molten resin 14.guide roller 15.impregnation roller 16.heater 17.ajustable heater 18.cooling unit 19.winding unit 20.guide roller 21.water pan,Advantages:high production efficiency,easy to realize,disadvantages:thermal degradation,hard to get full impregnation,2.2 Commingling,TWINTEX,2.3 Powder impregnation,US patent 5,529,652,1.fiber yarns 13,36.heater 1418,3032.roller 27.resin particles 28.porous wall 29.particles bath 33.vibrator 34.silent blocks 35.bars,Advantages:,high production efficiency,disadvantages:,process is difficult to control,powers should be approximately the same diameter with the fibers,2.4 Co-weaving,2.5 Solvent impregnation,Schematic of a solution impregnation process,2.6 In situ polymerization,Monomer viscosities are significantly low;,Impregnating fiber using monomers in situ polymerization.,