

FOLLOWUS
a.Department of Polymeric Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
b.Key Laboratory of Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Shanghai 201804, China
c.School of Physics Science and Engineering & Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Tongji University, Shanghai 200092, China
puhongting@tongji.edu.cn
Received:07 September 2020,
Revised:2020-10-12,
Accepted:02 November 2020,
Online First:30 November 2020,
Published:01 January 2021
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Luo, Q.; Pu, H. T.; Zhang, Z. H.; Zhang, X.; Yu, C. L. Foam/film alternating multilayer structure with high toughness and low thermal conductivity prepared , via, microlayer coextrusion. Chinese J. Polym. Sci. 2021, 39, 566–572
Qi Luo, Hong-Ting Pu, Zhi-Hua Zhang, et al. Foam/Film Alternating Multilayer Structure with High Toughness and Low Thermal Conductivity Prepared
Luo, Q.; Pu, H. T.; Zhang, Z. H.; Zhang, X.; Yu, C. L. Foam/film alternating multilayer structure with high toughness and low thermal conductivity prepared , via, microlayer coextrusion. Chinese J. Polym. Sci. 2021, 39, 566–572 DOI: 10.1007/s10118-021-2524-0.
Qi Luo, Hong-Ting Pu, Zhi-Hua Zhang, et al. Foam/Film Alternating Multilayer Structure with High Toughness and Low Thermal Conductivity Prepared
Multilayer membranes prepared
via
microlayer coextrusion have attracted wide attention due to their unique properties and broad applications. In present study
the foam/film alternating multilayer sheets based on ethylene-vinyl acetate copolymer (EVA) and high-density polyethylene are successfully prepared
via
microlayer coextrusion. The cells in the sheets are single-cell-array along the foamed EVA layers with uniform cell size. In addition
the effects of layer number and foam relative thickness on morphology
mechanical properties
damping and heat insulation properties are investigated. The cell size decreases significantly with increasing layer number due to the enhanced confine effects. The tensile strength
elongation at break
and heat insulation also increase significantly. However
the mechanical damping properties change little in the observed frequency. Meanwhile
with higher relative thickness of EVA foam
the sheets have lower tensile strength and lower thermal conductivity
while the damping properties are enhanced in a specific frequency scope. The elongation at break of the optimized sample comes to 800% and the thermal conductivity decreases to 61 mW·m
−1
·K
−1
which shows high toughness and low thermal conductivity
indicating a possible method for preparing materials with high toughness and heat-insulating properties.
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