Carbon nanotube (CNT) based polymeric composites exhibit high strength and thermal conductivity and can be electrically conductive at a low percolation threshold. CNT nanocomposites with polystyrene (PS) thermoplastic matrix were injection-molded and high shear stress in the flow direction enabled partial alignment of the CNTs. The samples with different CNT concentrations were prepared to study the effect of CNT concentration on the cutting behavior of the samples. Characterizations of CNT polymer composites were studied to relate different characteristics of materials such as thermal conductivity and mechanical properties to micromachining. Micro-end milling was performed to understand the material removal behavior of CNT nanocomposites. It was found that CNT alignment and concentrations influenced the cutting forces. The mechanistic micromilling force model was used to predict the cutting forces. The force model has been verified with the experimental milling forces. The machinability of the CNT nanocomposites was better than that of pure polymer due to the improved thermal conductivity and mechanical characteristics.

References

References
1.
Moniruzzaman
,
M.
, and
Winey
,
K. I.
,
2006
, “
Polymer Nanocomposites Containing Carbon Nanotubes
,”
Macromolecules
,
39
(
16
), pp.
5194
5205
.10.1021/ma060733p
2.
Han
,
Z.
, and
Fina
,
A.
,
2011
, “
Thermal Conductivity of Carbon Nanotubes and their Polymer Nanocomposites: A Review
,”
Prog. Polym. Sci.
,
36
(
7
), pp.
914
944
.10.1016/j.progpolymsci.2010.11.004
3.
Bauhofer
,
W.
, and
Kovacs
,
J. Z.
,
2009
, “
A Review and Analysis of Electrical Percolation in Carbon Nanotube Polymer Composites
,”
Compos. Sci. Technol.
,
69
(
10
), pp.
1486
1498
.10.1016/j.compscitech.2008.06.018
4.
Bryning
,
M. B.
,
Islam
,
M. F.
,
Kikkawa
,
J. M.
, and
Yodh
,
A. G.
,
2005
, “
Very Low Conductivity Threshold in Bulk Isotropic Single-Walled Carbon Nanotube-Epoxy Composites
,”
Adv. Mater.
,
17
(
9
), pp.
1186
1191
.10.1002/adma.200401649
5.
Xie
,
X. L.
,
Mai
,
Y. W.
, and
Zhou
,
X. P.
,
2005
, “
Dispersion and Alignment of Carbon Nanotubes in Polymers Matrix: A Review
,”
Mater. Sci. Eng.
,
49
(
4
), pp.
89
112
.10.1016/j.mser.2005.04.002
6.
Abbasi
,
S.
,
Carreau
,
P. J.
, and
Derdouri
,
A.
,
2010
, “
Flow Induced Orientation of Multiwalled Carbon Nanotubes in Polycarbonate Nanocomposites: Rheology, Conductivity and Mechanical Properties
,”
Polymer
,
51
(
4
), pp.
922
935
.10.1016/j.polymer.2009.12.041
7.
Teti
,
R.
,
2002
, “
Machining of Composite Materials
,”
Ann. CIRP
,
51
(
2
), pp.
611
634
.10.1016/S0007-8506(07)61703-X
8.
König
,
W.
,
Wulf
,
Ch.
,
Graß
,
P.
, and
Willerscheid
,
H.
,
1985
, “
Machining of Fibre Reinforced Plastics
,”
Ann. CIRP
,
34
(
2
), pp.
537
548
.10.1016/S0007-8506(07)60186-3
9.
Samuel
,
J.
,
DeVor
,
R.E.
,
Kapoor
,
S.G.
, and
Hsia
,
J.
,
2006
, “
Experimental Investigation of the Machinability of Polycarbonate Reinforced With Multiwalled Carbon Nanotubes
,”
J. Manuf. Sci. Eng.
,
128
, pp.
465
473
.10.1115/1.2137753
10.
Samuel
,
J.
,
Dikshit
,
A.
,
DeVor
,
R. E.
,
Kapoor
,
S. G.
, and
Hsai
,
K. J.
,
2009
, “
Effect of Carbon Nanotube (CNT) Loading on the Thermomechanical Properties and the Machinability of CNT-Reinforced Polymer Composites
,”
J. Manuf. Sci. Eng.
,
131
,
031008
.10.1115/1.3123337
11.
Mahmoodi
,
M.
,
Arjmand
,
M.
,
Sundararaj
,
U.
, and
Park
,
S. S.
,
2011
, “
The Electrical Conductivity and Electromagnetic Interference Shielding of Injection Molded Multi-Walled Carbon Nanotube/Polystyrene Composites
,”
Carbon
,
50
(
4
), pp.
1455
1464
.10.1016/j.carbon.2011.11.004
12.
Min
,
S.
,
Lidde
,
J.
,
Raue
,
N.
, and
Dornfeld
,
D.
,
2011
, “
Acoustic Emission Based Tool Contact Detection for Ultra-Precision Machining
,”
Ann. CIRP
,
60
(
1
), pp.
141
144
.10.1016/j.cirp.2011.03.079
13.
Mahmoodi
,
M.
,
Santos
,
G.
,
Arjmand
,
M.
,
Sundararaj
,
U.
, and
Park
,
S. S.
,
2012
, “
Thermal Conductivity of Aligned Injection Molded Multi-Walled Carbon Nanotube Filled Polystyrene Nanocomposites
,”
Proceeding of the Polymer Processing Society
,
Niagara, Canada
.
14.
Ghose
,
S.
,
Watson
,
K. A.
,
Working
,
D. C.
,
Connell
,
J. W.
,
Smith
J. G.
, and
Sun
,
Y. P.
,
2008
, “
Thermal Conductivity of Ethylene Vinyl Acetate Copolymer/Nanofiller Blends
,”
Compos. Sci. Technol.
,
68
(
7-8
), pp.
1843
1853
.10.1016/j.compscitech.2008.01.016
15.
Kim
,
Y. A.
,
Hayashi
,
T.
,
Endo
,
M.
,
Gotoh
,
Y.
,
Wada
N.
, and
Seiyama
,
J.
,
2006
, “
Fabrication of Aligned Carbon Nanotube-Filled Rubber Composite
,”
Scr. Mater.
,
54
(
1
), pp.
31
35
.10.1016/j.scriptamat.2005.09.014
16.
Huang
,
H.
,
Liu
,
C.
,
Wu
Y.
, and
Fan
,
S.
,
2005
, “
Aligned Carbon Nanotube Composites Films for Thermal Management
,”
Adv. Mater.
,
17
(
13
), pp.
1652
1656
.10.1002/adma.200500467
17.
Shenogina
,
S.
,
Xue
,
L.
,
Ozisik
,
R.
,
Keblinski
,
P.
, and
Cahill
,
D. G.
,
2004
, “
Role of Thermal Boundary Resistance on the Heat Flow in Carbon-nanotube Composites
,”
J. Appl. Phys.
,
95
(
12
), pp.
8136
8844
.10.1063/1.1736328
18.
Satapathy
,
B. K.
,
Weidisch
,
R.
,
Pötschke
,
P.
, and
Janke
,
A.
,
2007
, “
Tough-to-Brittle Transition in Multiwalled Carbon Nanotube (MWNT)/Polycarbonate Nanocomposites
,”
Compos. Sci. Technol.
,
67
(
5
), pp.
867
879
.10.1016/j.compscitech.2006.01.036
19.
Park
,
S. S.
, and
Malekian
,
M.
,
2009
, “
Mechanistic Modeling and Accurate Measurement of Micro End Milling Forces
,”
Ann. CIRP
,
58
(
1
), pp.
49
52
.10.1016/j.cirp.2009.03.060
20.
Malekian
,
M.
,
Park
,
S. S.
, and
Um
,
K.
,
2008
, “
Investigation of Micro Plowing Forces Through Conical Scratch Tests
,”
Trans. SME-NAMRI
,
36
, pp.
293
300
.
21.
Samuel
,
J.
,
2009
,
Fundamental Study of the Machinability of Carbon Nanotube Reinforced Polymer Nanocomposites
, University of Illinois at Urbana-Champaign, Urbana, Illinois.
22.
Malekian
,
M.
,
Mostofa
,
M. G.
,
Park
,
S. S.
, and
Jun
,
M. B.
,
2012
, “
Modeling of Minimum Uncut Chip Thickness in Micro Machining of Aluminum
,”
J. Mater. Process. Technol.
,
212
(
3
), pp.
553
559
.10.1016/j.jmatprotec.2011.05.022
23.
Samuel
,
J.
,
Kapoor
,
S. G.
,
DeVor
,
R. E.
, and
Hsia
,
K. J.
,
2010
, “
Effect of Microstructural Parameters on the Machinability of Aligned Carbon Nanotube Composites
,”
J. Manuf. Sci. Eng.
,
132
(
5
), p.
051012
.10.1115/1.4002495
24.
Murphy
,
C.
,
Byrne
,
G.
, and
Gilchrist
,
M. D.
,
2002
, “
The Performance of Coated Tungsten Carbide Drills When Machining Carbon Fibre-reinforced Epoxy Composite Materials
,”
Proc. Inst. Mech. Eng., Part B: J. Eng. Manuf.
,
216
(
2
), pp.
143
152
.10.1243/0954405021519735
25.
Magonov
,
S. N.
,
Elings
,
V.
,
Whangbo
,
M.-H.
,
1997
, “
Phase Imaging and Stiffness in Tapping-Mode Atomic Force Microscopy
,”
Surf. Sci.
,
375
(
2-3
), pp.
L385
L391
.10.1016/S0039-6028(96)01591-9
26.
Schmitz
,
I.
,
Schreiner
,
M.
,
Freidbacher
,
G.
, and
Grasserbauer
,
M.
,
1997
, “
Phase Imaging as an Extension to Tapping Mode AFM for the Identification of Material Properties on Humidity-Sensitive Surface
,”
Appl. Surf. Sci.
,
115
(
2
), pp.
190
198
.10.1016/S0169-4332(97)80204-8
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