Designing formulation variables of extrusion-based manufacturing of carbon black conductive polymer composites for piezoresistive sensing
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In: Composites science and technology, Vol. 171.2019, No. 8 February, 13.12.2018, p. 78-85.
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TY - JOUR
T1 - Designing formulation variables of extrusion-based manufacturing of carbon black conductive polymer composites for piezoresistive sensing
AU - Duan, Lingyan
AU - Spörk, Martin
AU - Wieme, Tom
AU - Cornillie, Pieter
AU - Xia, Hesheng
AU - Zhang, Jie
AU - Cardon, Ludwig
AU - D'hooge, Dagmar R.
PY - 2018/12/13
Y1 - 2018/12/13
N2 - Highly sensitive conductive polymer composites for piezoresistive sensing are developed by a design of the formulation variables of extrusion-based manufacturing (filler type/amount, polymer amount) and annealing (a), considering thermoplastic polyurethane (TPU) and/or olefin block copolymer (OBC) as polymer matrix and carbon black (CB) as conductive filler. With ternary composites - based on a CB type with stronger filler-matrix interactions and an appropriate OBC/TPU blend mass ratio (40/60 with CB amount of 5–10 m%; 50/50 with CB amount of 10 m%), the challenging region of both high sensitivity and static strain (maximal gauge factors (GFmax) > 50 and εmax > 100%) can be realized: GFmax >104 and εmax=20–240%. OBC binary composites with a high CB2 amount (e.g. 15 m%) are however needed for ultrahigh static strains (εmax > 600%). Welldesigned ternary composites (e.g. OBC40-CB/TPU60-7-a and OBC30-CB/TPU70-7-a) possess a large dynamic resistance change, negligible hysteresis and high stability and display strain sensor application potential. Highly CB2 loaded binary (≥12 m%) and ternary composites (10 m%) exhibit a more obvious strain-dependent dynamic hysteretic behavior, as they switch from a dual peak to single peak pattern toward the sensing strain limit, which is interesting for self-diagnose.
AB - Highly sensitive conductive polymer composites for piezoresistive sensing are developed by a design of the formulation variables of extrusion-based manufacturing (filler type/amount, polymer amount) and annealing (a), considering thermoplastic polyurethane (TPU) and/or olefin block copolymer (OBC) as polymer matrix and carbon black (CB) as conductive filler. With ternary composites - based on a CB type with stronger filler-matrix interactions and an appropriate OBC/TPU blend mass ratio (40/60 with CB amount of 5–10 m%; 50/50 with CB amount of 10 m%), the challenging region of both high sensitivity and static strain (maximal gauge factors (GFmax) > 50 and εmax > 100%) can be realized: GFmax >104 and εmax=20–240%. OBC binary composites with a high CB2 amount (e.g. 15 m%) are however needed for ultrahigh static strains (εmax > 600%). Welldesigned ternary composites (e.g. OBC40-CB/TPU60-7-a and OBC30-CB/TPU70-7-a) possess a large dynamic resistance change, negligible hysteresis and high stability and display strain sensor application potential. Highly CB2 loaded binary (≥12 m%) and ternary composites (10 m%) exhibit a more obvious strain-dependent dynamic hysteretic behavior, as they switch from a dual peak to single peak pattern toward the sensing strain limit, which is interesting for self-diagnose.
U2 - 10.1016/j.compscitech.2018.12.009
DO - 10.1016/j.compscitech.2018.12.009
M3 - Article
VL - 171.2019
SP - 78
EP - 85
JO - Composites science and technology
JF - Composites science and technology
SN - 0266-3538
IS - 8 February
ER -
