Thermoelectric and mechanical properties of PLA/Bi0·5Sb1·5Te3 composite wires used for 3D printing

Jizhe WANG; Hongze LI; Rongxuan LIU; Liangliang LI; Yuan Hua LIN; Ce Wen NAN

doi:10.1016/j.compscitech.2018.01.013

Thermoelectric and mechanical properties of PLA/Bi0·5Sb1·5Te3 composite wires used for 3D printing

Jizhe WANG, Hongze LI, Rongxuan LIU, Liangliang LI^*, Yuan Hua LIN, Ce Wen NAN

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

49 Citations (Scopus)

Abstract

Thermoelectric (TE) composite wires with polylactic acid (PLA) as the matrix and Bi_0·5Sb_1·5Te₃ (BST) as the filler are synthesized by extruding. The effects of silane coupling agent KH570, plasticizer ATBC, and conductive additive multi-walled carbon nanotubes (MWCNTs) on the composition, TE, and mechanical properties of the composite wires are systematically studied. It is necessary to add KH570 into the composite wires to make the actual BST loading the same as the designed value. The addition of ATBC greatly increases the flexibility of the composite wires and improves the wires’ mechanical properties. When the BST loading increases from 35.8 to 87.5 wt%, the flexural modulus increases from 1684.0 to 4379.8 MPa and the flexural strength monotonically decreases from 50.1 to 13.4 MPa. In aspect of TE properties, the power factor PF of the composite wires increases with the increase of the BST loading, and the maximum Seebeck coefficient reaches 200 μV K⁻¹. When MWCNTs are added into the composite wires, the electrical conductivity is significantly enhanced and thus the PF of the wires is raised. The highest PF of 11.3 μW m⁻¹ K⁻² is obtained for the wire containing 81.3 wt% BST and 4 wt% MWCNTs. A TE figure of merit ZT of 0.011 is obtained at room temperature. The excellent TE properties and satisfactory mechanical properties of the BST/PLA composite wires make them a promising candidate used for 3D printing of TE devices.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Composites Science and Technology
Volume	157
Early online date	10 Jan 2018
DOIs	https://doi.org/10.1016/j.compscitech.2018.01.013
Publication status	Published - 22 Mar 2018
Externally published	Yes

Bibliographical note

This work was financially supported by the National Natural Science Foundation of China (Grant No. 51572149 ), National Key Research and Development Program of China (Grant No. 2016YFA0201003 ), National Basic Research Program of China (Grant No. 2013CB632504 ), and Fund of Key Laboratory of Advanced Materials of Ministry of Education (Grant No. 2017AML11 ). We thank Mrs. Wenyan Yang and Mrs. Rong Wang in Department of Precision Instrument at Tsinghua University for their help on SEM.

Keywords

Carbon nanotubes
Extrusion
Mechanical properties
Polymer-matrix composites (PMCs)
Thermoelectric properties

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10.1016/j.compscitech.2018.01.013

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title = "Thermoelectric and mechanical properties of PLA/Bi0·5Sb1·5Te3 composite wires used for 3D printing",

abstract = "Thermoelectric (TE) composite wires with polylactic acid (PLA) as the matrix and Bi0·5Sb1·5Te3 (BST) as the filler are synthesized by extruding. The effects of silane coupling agent KH570, plasticizer ATBC, and conductive additive multi-walled carbon nanotubes (MWCNTs) on the composition, TE, and mechanical properties of the composite wires are systematically studied. It is necessary to add KH570 into the composite wires to make the actual BST loading the same as the designed value. The addition of ATBC greatly increases the flexibility of the composite wires and improves the wires{\textquoteright} mechanical properties. When the BST loading increases from 35.8 to 87.5 wt%, the flexural modulus increases from 1684.0 to 4379.8 MPa and the flexural strength monotonically decreases from 50.1 to 13.4 MPa. In aspect of TE properties, the power factor PF of the composite wires increases with the increase of the BST loading, and the maximum Seebeck coefficient reaches 200 μV K−1. When MWCNTs are added into the composite wires, the electrical conductivity is significantly enhanced and thus the PF of the wires is raised. The highest PF of 11.3 μW m−1 K−2 is obtained for the wire containing 81.3 wt% BST and 4 wt% MWCNTs. A TE figure of merit ZT of 0.011 is obtained at room temperature. The excellent TE properties and satisfactory mechanical properties of the BST/PLA composite wires make them a promising candidate used for 3D printing of TE devices.",

keywords = "Carbon nanotubes, Extrusion, Mechanical properties, Polymer-matrix composites (PMCs), Thermoelectric properties",

author = "Jizhe WANG and Hongze LI and Rongxuan LIU and Liangliang LI and LIN, {Yuan Hua} and NAN, {Ce Wen}",

note = "This work was financially supported by the National Natural Science Foundation of China (Grant No. 51572149 ), National Key Research and Development Program of China (Grant No. 2016YFA0201003 ), National Basic Research Program of China (Grant No. 2013CB632504 ), and Fund of Key Laboratory of Advanced Materials of Ministry of Education (Grant No. 2017AML11 ). We thank Mrs. Wenyan Yang and Mrs. Rong Wang in Department of Precision Instrument at Tsinghua University for their help on SEM.",

year = "2018",

month = mar,

day = "22",

doi = "10.1016/j.compscitech.2018.01.013",

language = "English",

volume = "157",

pages = "1--9",

journal = "Composites Science and Technology",

issn = "0266-3538",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Thermoelectric and mechanical properties of PLA/Bi0·5Sb1·5Te3 composite wires used for 3D printing

AU - WANG, Jizhe

AU - LI, Hongze

AU - LIU, Rongxuan

AU - LI, Liangliang

AU - LIN, Yuan Hua

AU - NAN, Ce Wen

N1 - This work was financially supported by the National Natural Science Foundation of China (Grant No. 51572149 ), National Key Research and Development Program of China (Grant No. 2016YFA0201003 ), National Basic Research Program of China (Grant No. 2013CB632504 ), and Fund of Key Laboratory of Advanced Materials of Ministry of Education (Grant No. 2017AML11 ). We thank Mrs. Wenyan Yang and Mrs. Rong Wang in Department of Precision Instrument at Tsinghua University for their help on SEM.

PY - 2018/3/22

Y1 - 2018/3/22

N2 - Thermoelectric (TE) composite wires with polylactic acid (PLA) as the matrix and Bi0·5Sb1·5Te3 (BST) as the filler are synthesized by extruding. The effects of silane coupling agent KH570, plasticizer ATBC, and conductive additive multi-walled carbon nanotubes (MWCNTs) on the composition, TE, and mechanical properties of the composite wires are systematically studied. It is necessary to add KH570 into the composite wires to make the actual BST loading the same as the designed value. The addition of ATBC greatly increases the flexibility of the composite wires and improves the wires’ mechanical properties. When the BST loading increases from 35.8 to 87.5 wt%, the flexural modulus increases from 1684.0 to 4379.8 MPa and the flexural strength monotonically decreases from 50.1 to 13.4 MPa. In aspect of TE properties, the power factor PF of the composite wires increases with the increase of the BST loading, and the maximum Seebeck coefficient reaches 200 μV K−1. When MWCNTs are added into the composite wires, the electrical conductivity is significantly enhanced and thus the PF of the wires is raised. The highest PF of 11.3 μW m−1 K−2 is obtained for the wire containing 81.3 wt% BST and 4 wt% MWCNTs. A TE figure of merit ZT of 0.011 is obtained at room temperature. The excellent TE properties and satisfactory mechanical properties of the BST/PLA composite wires make them a promising candidate used for 3D printing of TE devices.

AB - Thermoelectric (TE) composite wires with polylactic acid (PLA) as the matrix and Bi0·5Sb1·5Te3 (BST) as the filler are synthesized by extruding. The effects of silane coupling agent KH570, plasticizer ATBC, and conductive additive multi-walled carbon nanotubes (MWCNTs) on the composition, TE, and mechanical properties of the composite wires are systematically studied. It is necessary to add KH570 into the composite wires to make the actual BST loading the same as the designed value. The addition of ATBC greatly increases the flexibility of the composite wires and improves the wires’ mechanical properties. When the BST loading increases from 35.8 to 87.5 wt%, the flexural modulus increases from 1684.0 to 4379.8 MPa and the flexural strength monotonically decreases from 50.1 to 13.4 MPa. In aspect of TE properties, the power factor PF of the composite wires increases with the increase of the BST loading, and the maximum Seebeck coefficient reaches 200 μV K−1. When MWCNTs are added into the composite wires, the electrical conductivity is significantly enhanced and thus the PF of the wires is raised. The highest PF of 11.3 μW m−1 K−2 is obtained for the wire containing 81.3 wt% BST and 4 wt% MWCNTs. A TE figure of merit ZT of 0.011 is obtained at room temperature. The excellent TE properties and satisfactory mechanical properties of the BST/PLA composite wires make them a promising candidate used for 3D printing of TE devices.

KW - Carbon nanotubes

KW - Extrusion

KW - Mechanical properties

KW - Polymer-matrix composites (PMCs)

KW - Thermoelectric properties

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U2 - 10.1016/j.compscitech.2018.01.013

DO - 10.1016/j.compscitech.2018.01.013

M3 - Journal Article (refereed)

AN - SCOPUS:85040376063

SN - 0266-3538

VL - 157

SP - 1

EP - 9

JO - Composites Science and Technology

JF - Composites Science and Technology

ER -

Thermoelectric and mechanical properties of PLA/Bi0·5Sb1·5Te3 composite wires used for 3D printing

Abstract

Bibliographical note

Keywords

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