材料加工形态学5-2聚合物加工结构性能-静态混合器.ppt

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1、混炼器加工的聚合物结构与性能,分散相尺寸的控制 特殊设备中的混合形态 Pan-Milling Miniature mixers MINI-MAX Molder无机填料对形态的影响加工的影响因素,Sheet Formation,Sundararaj U,Dori Y,Macosko C W.Polymer,1995,36:1957,the effect of viscosity ratio for changing PP viscosity,effect of shear rate,PP3050/PS666D,Pan-milling mixing,Morphology of:(a)PP/PA6(

2、80/20,w/w)blend;(b)PP/PA6 moulded from mixed PP/PA6(80/20,w/w)powder pan-milled for 20 cycles.,FTIR spectra of:(a)PP;(b)PP extracted from PP/PA6(80/20,w/w)compound powder pan-milled for 10 cycles;(c)PP/PA6(80/20,w/w)compound powder pan-milled for 20 cycles,Zhe Chen,Q.W.(2001).Pan-milling mixing-a no

3、vel approach to forming polymer blends and controlling their morphology.Polymer International 50(9):966-972.,Pan-milling mixing,Zhe Chen,Q.W.(2001).Pan-milling mixing-a novel approach to forming polymer blends and controlling their morphology.Polymer International 50(9):966-972.,Melt Mixing of Polyc

4、arbonate with Multi-Walled Carbon Nanotubes,TEM micrographs of PC/MWNT prepared from APAM(a,d,g,j),MBM(b,e,h,k)and DACA(c,f,i,l).MWNT content is 0.50 wt.-%in(a),(b)and(c);0.75 wt.-%in(d),(e)and(f);1.00 wt.-%in(g),(h)and(i);and 1.25 wt.-%in(j),(k)and(l).,Bin Lin,U.S.P.P.(2006).Melt Mixing of Polycarb

5、onate with Multi-Walled Carbon Nanotubes in Miniature Mixers.Macromolecular Materials and Engineering 291(3):227-238,Melt Mixing of Polycarbonate with Multi-WalledCarbon Nanotubes,(a)AFM micrographs(left:height image;right:amplitude image)of MWNT recovered after mixing from the APAM;(b)length distri

6、bution of the MWNT recovered after mixing in the APAM.MWNT were recovered from a composite with 0.75 wt.-%MWNT by dissolving PC,Compared to the original length of 1015 nm,Improvement of a gram-scale mixer,(a)MINI-MAX Molder CS 183MMX;(b)melt mixing with Teflon disk and steel balls PP/HIPS 70/30,Mixi

7、ng Conditions and Average Particle Size(D)After Mixing at 180C for 5 min,Setting Teflon Disk and Adding Small Steel Balls;Number of Balls Was Varied,Bin Yang,M.S.T.K.T.I.(2006).Improvement of a gram-scale mixer for polymer blending.Journal of Applied Polymer Science 99(1):1-5.,减小,混炼器加工的聚合物结构与性能,分散相尺

8、寸的控制特殊设备中的混合形态无机填料对形态的影响 Nanoclay Carbon Nanotube加工的影响因素,Nanoclay-Induced Morphology Development,Optical images of surviving PPCL fibrils after a strain of 341 located near the rotor surfaces.(a)PA6-PP1 blend and(b)PA6-PPCL blend.,Dhawal P.Dharaiya,S.C.J.(2005).Nanoclay-induced morphology developmen

9、t in chaotic mixing of immiscible polymers.“Journal of Polymer Science Part B:Polymer Physics 43(24):3638-3651,Nanoclay-Induced Morphology Development,Frequency distribution of droplet diameter for PA6-PPCL blend at various strains.The inset shows frequency distribution at strain of 341,Thread break

10、up of fibers of(a)PP2 and(b)PPCL1 in PA6/12 films at 180.The initial thread diameter in each case was 60 nm,Organoclay Nanocomposites Morphology,SEM micrographs for foams of PLA and PLA nanocomposites with different weight fraction of 30B:(a)PLA,original magnification 50;(b)PLA/1 wt%30B,original mag

11、nification 200;(c)PLA/2 wt%30B,original magnification 200;(d)PLA/5 wt%30B,original magnification 250,Yingwei Di,S.I.E.D.M.L.N.(2005).Poly(lactic acid)/organoclay nanocomposites:Thermal,rheological properties and foam processing.Journal of Polymer Science Part B:Polymer Physics 43(6):689-698.,X50,X20

12、0,X200,X250,混炼器加工的聚合物结构与性能,分散相尺寸的控制特殊设备中的混合形态无机填料对形态的影响加工的影响因素 Time.Quiescent Annealing,mixing conditions on the morphology and properties,?loufov,.(2003).Effect of mixing conditions on the morphology and properties of polystyrene/polyethylene blends compatibilized withstyrene-butadiene block copoly

13、mers.Journal of Polymer Science Part B:Polymer Physics 41(6):609-622.,20 min,Coalescence and interfacial tension,coalescence,Interfacial tension,Quiescent Annealing,Initial Pore Radius R0 After Blending and Viscosity Ratios p(Viscosity of PS/Viscosity of HDPE)at 200C,SEM micrographs for PS1/PE1 50/5

14、0(a)non annealed sample;(b)annealed at 180C for 10 min;(c)annealed at 200C for 30 min;and(d)annealed at 180C for 30 min.(The white bars denote 100 um).,Zhenhua Yuan,B.D.F.(2005).Coarsening of immiscible co-continuous blends during quiescent annealing.AIChE Journal 51(1):271-280.,Quiescent Annealing,

15、Presence of thin rods/threads in SEM micrographs of PS1/PE1 50/50 annealed at 190C for 45 min,Zhenhua Yuan,B.D.F.(2005).Coarsening of immiscible co-continuous blends during quiescent annealing.AIChE Journal 51(1):271-280.,Quiescent Annealing,(a)the thin rod merges/flows into thick ones at both sides

16、,the thick rod merges into a much thicker one at the same time(b)the thin rod becomes thinner during the merging process(c)the thin rod breaks/splits(d)the residual parts retract/shrink to the thick rods.,Quiescent Annealing,PS1/PE1 50/50 annealed at 200 for 10 min,without SEBS,with15%SEBS,annealed

17、at 200 for 60 min,Zhenhua Yuan,B.D.F.(2006).Influence of the efficacy of interfacial modification on the coarsening of cocontinuous PS/HDPE blends during quiescent annealing.Journal of Polymer Science Part B:Polymer Physics 44(4):711-721.,Quiescent Annealing,SEM micrographs of 50/50 PS/PE blends wit

18、h 1%PSPE block copolymers after mixing at 50 rpm for 10 min at 170:PSPE(a)no block copolymer,(b)6k,(molecular weight)(c)40k,(d)100k and(e)200k.,Galloway,Jeffrey A.;Jeon,Hyun K.;Bell,Joel R.;Macosko,ChristopherW.Block copolymer compatibilization of cocontinuous polymer blends.Polymer(2005),46(1),183-191,Quiescent Annealing,1 退火可以使共连续相粗化coarsening2 界面改性剂可以抑制连续相的粗化原因a 改性剂迁移至体系表面，减小界面张力 b 在连续相内部形成胶束3 改性剂的分子量对抑制有明显的影响,