24 6 V o l 24, N o 6 2004 11 TR IBOLO GY N ov, 2004,,, (, 730000) : MM 2200 (PT FE) M os2 (P I) GC r15, X P I, PT FE M os2 P I, P I+ 30%M os2, P I 50%. P I+ 10% PT FE+ 20%M os2, P I, P I+ 20% PT FE+ 10%M os2, P I 1. P I,, P I : ; ; ; : TH 117. 3 : A : 100420595 (2004) 0620522205 (P I),,, [1 ]., P I, (PT FE) (Gr) [2 ] (CF) [3, 4 ] [5, 6 ] P I, P I (M os2), [7, 8 ]. 2,, P I2 PT FE2M os2, PT FE M os2,. 1 1. 1 P I YS220, 120 M Pa, 88 Λm. PT FE SM 021 (F), PT FE, 35 Λm. M os2 2 M os2, 30 Λm. P I PT FE M os2,,. P I, 6 mm 7 mm 30 mm ( 1 2). 1. 2 MM 2200 P I <40 mm GC r15, 1 000 # R a= 2. 3 Λm. : 0. 42 m gs, 120 m in. 60 m in ; 0. 01 mm, JSM 25600LV (SEM ) P I, EDA X9100 X (EDXA ) : 2003212218; : 2004203212g, e2m ail: zzzhang@ns. lzb. ac. cn. :,, 1965,,,.
6 : 523 2 2. 1 1 200 N PT FE P I, PT FE P I, P I+ 30% PT FE P I+ 10% PT FE P I+ 40% PT FE 1 PTFE P I Table 1 Effect of PTFE con ten t on the fr iction coeff ic ien t and wear rate of P I composites Compo sites F riction coefficient Λ W ear rateg10-6 mm 3 (N m ) - 1 Pure P I 0. 34 3. 99 P I+ 10% PT FE 0. 26 1. 54 P I+ 20% PT FE 0. 29 1. 22 P I+ 30% PT FE 0. 27 1. 05 P I+ 40% PT FE 0. 24 1. 31, P I P I 70%, P I 2. 2 P I 2 P I 200 N, 2 P I Table 2 The results of the fr iction coeff ic ien t and wear rate of P I composites Samp le num ber Samp le compo sition F riction coefficient Λ W ear rateg10-6 mm 3 (N m ) - 1 Samp le 1 Pure P I 0. 34 3. 99 Samp le 2 P I+ 30% PT FE 0. 27 1. 05 Samp le 3 P I+ 20% PT FE+ 10%M os2 0. 27 0. 49 Samp le 4 P I+ 10% PT FE+ 20%M os2 0. 21 4. 77 Samp le 5 P I+ 30%M os2 0. 16 0. 69 PT FE M os2 P I, P I+ 30%M os2, P I 50%. P I+ 10% PT FE + 20%M os2, P I, P I+ 20% PT FE + 10%M os2, P I 1 P I+ 30%M os2 1 P I F ig 1 V ariation of friction coefficien t and w ear rate of P I compo sites w ith load 1 P I, P I+ 30%M os2, (300 N ) 0. 1, [ 1 (a) ];, P I+ 30%M os2 P I+ 30% PT FE P I+ 20% PT FE + 10%M os2, P I+ 20% PT FE + 10%M os2, 250 N,
524 24 [ 1 (b) ]; P I + 30%M os2. ( 250 N ), P I+ 30%M os2 P I+ 30% PT FE P I+ 20% PT FE+ 10%M os2, ( 250 N ), P I+ 30%M os2 P I+ 30% PT FE P I+ 20% PT FE + 10% M os2 2. 3 2 3 4 200 N F ig 2 SEM mo rpho logy of the w o rn su rfaces of P I compo sites (800 ) 2 P I SEM ( 800) F ig 3 Fe distribu tion of w o rn su rface of P I compo sites (250 ) 3 P I Fe ( 250) F ig 4 S (C fo r pure P I) distribu tion on the coun terpart su rface again st P I compo sites (250 ) 4 P I S ( P I C ) ( 250)
6 : 525 P I SEM., P I [ 2 (a) ], Fe [ 3 (a) ], P I ; C [ 4 (a) ], P I, [ 2 ]. P I+ 20% PT FE+ 10%M os2, [ 2 (b) ], Fe [ 3 (b) ], S [ 4 (b) ], P I+ 20% PT FE + 10%M os2, 2 2, ( 2)., P I+ 30%M os2 [ 2 (c) ], Fe [ 3 (c) ], S [ 4 (c) ]., P I+ 30%M os2,, [ 2 ]. P I+ 10% PT FE+ 20%M os2 [ 2 (d) ],,, P I, P I ;, 3 a. PT FE P I ; P I PT FE 30%, P I2PT FE b. PT FE M os2 P I, P I+ 30%M os2, P I 50% ; P I+ 10% PT FE + 20%M os2, P I, P I + 20% PT FE + 10%M os2, P I 1 ; P I+ 30%M os2 c. P I, P I : [ 1 ],,,. [J ]., 2002, 30 (1) : 629. Yan H X, Huang Y, Ge Q, et al. Developm ent of advanced P I2based compo sites[j ]. N ew Chem icalm aterials, 2002, 30 (1): 629. [ 2 ],,. [J ]., 1999, 26 (4) : 27229. H uang L, Xu D Y, Cheng H Y. po lyim ide compo sites [ J ]. Chem ical T echno logy, 1999, 26 (4) : 27229. Study on the p roperty of Journal of Beijing U niversity of [ 3 ],,,. [J ]., 2002, 22 (4) : 2732276. J ia J H, Zhou H D, Gao S Q, et al. T he tribo logical behavio r of carbon fiber reinfo rced po lyim ide compo sites under w ater lubrication[j ]. T ribo logy, 2002, 22 (4) : 2732276. [ 4 ],,,. g [ J ]., 2003, 21 (2) : 1832186. J ia J H, Gao S Q, Chen J M, et al. T ribo logical p roperties and w ear m echanism of PTFE and carbon fiber reinfo rced P I compo sites[ J ]. 2003, 21 (2) : 1832186. Journal of M aterials Science & Engineering, [ 5 ] Cai H, Yan F Y, Xue Q J, et al. Investigation of tribo logical p roperties of A l2o 32po lyim ide nanocompo sites [ J ]. Testing, 2003, 22 (8) : 8752882. Po lym er [ 6 ],,,. Si3N 4 [J ]., 2001, 21 (6) : 4522455. Yan H X, N ing R C,M a X Y, et al. F riction and w ear behavio r of nanom eter Si3N 42filled bism aleim ide compo sites [ J ]. T ribo logy, 2001, 21 (6) : 4522455. [ 7 ] J ia J H, Zhou H D, Gao S Q, et al. A comparative investigation of the friction and w ear behavio r of po lyim ide compo sites under dry sliding and w ater2lubricated condition [ J ]. M aterials Science & Engineering (A ), 2003, 356 (122) : 48253. [ 8 ],. [ J ]., 2004, 24 (1) : 212 24. L iu G D, L i H L. Effect of po lyp ropylene and mo lybdenum disulfide on friction and w ear behavio r of ultra h igh mo lecular w eigh t po lyethylene[j ]. T ribo logy, 2004, 24 (1) : 21224.
526 24 Study on the Fr iction and W ear Properties of Poly im ide Com posites F illed with Polytetraf luoroethylene and M os2 ZHU M in, ZHAN G Zhao2zhu, W AN G Kun, J IAN G W ei (S tate K ey L aboratory of S olid L ubrication, L anz hou Institu te of Chem ical P hy sics, Ch inese A cad em y of S ciences, L anz hou 730000, Ch ina) Abstract: T he frict ion and w ea r p rop ert ies of the po lyim ide ( P I) com po sites filled w ith po lytet ra2 fluo roethylene (PT FE) and mo lybdenum disu lfide (M os2) particu lates sliding again st GC r15 steel under dry friction condition w ere studied u sing an MM 2200 ring2on2b lock friction and w ear tester. T he w o rn su rfaces of the P I compo site b lock s and the coun terpart steel rings w ere ob served u sing a scann ing electron m icro scope and energy dispersive spectro scope. It w as found that PT FE and M os2 as the fillers con tribu ted to imp rove the friction and w ear behavio r of P İ N am ely, all the filled P I compo sites excep t fo r P I+ 10% PT FE+ 20% M os2 show ed m uch better w ear2resistance than the unfilled P I, fo r examp le, the P I+ 20% PT FE+ 10%M os2 compo site registered a w ear rate sm aller than that of the unfilled P I by 1 o rder of m agn itude, and the filled P I com po sites had sm a ller frict ion coefficien t s than the unfilled P I a s w ell. M o reover, the P I + 30%M os2 compo site show ed the best friction2reducing and an tiw ear behavio r among all the compo sites tested, w h ich indicated that the ino rgan ic and o rgan ic comp lex fillers did no t necessarily have synergistic effect in term s of their ab ility to imp rove the friction and w ear behavio r of P İ T he imp roved friction and w ear behavio rs of the filled P I com po sites w ere clo sely rela ted to the cha racterist ics of their t ran sfer film s fo rm ed on the coun terpart steel su rface. T he compo sites capab le of fo rm ing the tran sfer film w ith p roper th ickness and even distribu tion had better friction and w ear behavio rṡ Key words: PT FE; M os2; po lyim ide compo site; friction and w ear behavio r Author: ZHAN G Zhao2zhu, m ale, bo rn in 1965, Ph. D., R esearch P rofesso r, e2m ail: zzzhang@n s. lzb. ac. cn