Ductile "Ice": Frozen hydrogels with high ductility and compressive yielding strength

Rao, Ping1,2,3; Li, Tiefeng1,2,3; Wu, Zi Liang4; Hong, Wei5,6; Yang, Xuxu2,3; Yu, Honghui7; Wong, Tuck-Whye8; Qu, Shaoxing1,2,3; Yang, Wei2,3

2019-04

10.1016/j.eml.2019.02.008

Extreme Mechanics Letters   影响因子和分区

2352-4316

Ice, the solid state of water, which mainly consists of a hexagonal crystal structure in bulk, is usually very brittle. Although ice appears less brittle under compression or shear at a relatively low strain rate, it is by no means a ductile material as metal and is seldom considered as an engineering material in applications other than igloos. We report herein the astonishing ductility and high compressive yielding strength of a polymeric hydrogel in a frozen state. Containing 88 wt. % of water, the hydrogel appears like ice when frozen, and embraces most other physical properties of ice. Meanwhile, the frozen hydrogel not only shows a high compressive modulus (similar to 1 GPa at -25 degrees C) and yielding strength (similar to 20 MPa at -25 degrees C), but is also ductile enough to sustain extremely large deformation such as bending, twisting, stretching, extensive shaping, and even machining in a large low temperature range. The ductility at a high strain rate also makes it a material with a significant impact resistivity. Moreover, the frozen gel also exhibits the repeatable ductility - the large plastic deformation is completely recoverable at an elevated temperature. These results will be important towards developing low-cost and environment-friendly engineering materials used in a low temperature range when ductility and reusability is required. (C) 2019 Elsevier Ltd. All rights reserved.

Ductile ice Frozen hydrogel High yielding strength Repeatable Large deformation

SCI ; EI

英语

其他

National Natural Science Foundation of China[11525210] ; National Natural Science Foundation of China[11621062] ; National Natural Science Foundation of China[91748209] ; National Natural Science Foundation of China[11572280] ; National Natural Science Foundation of China[11432012] ; National Natural Science Foundation of China[11532011] ; National Natural Science Foundation of China[U1613202]

Engineering ; Materials Science ; Mechanics

Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics

WOS:000464224900006

ELSEVIER SCIENCE BV

20191006604077

Compressive strength ; Cost engineering ; Crystal structure ; Ductility ; Hydrogels ; Reusability ; Strain rate ; Temperature

Thermodynamics:641.1 ; Chemical Products Generally:804 ; Cost and Value Engineering; Industrial Economics:911 ; Crystal Lattice:933.1.1 ; Materials Science:951

Web of Science

1.Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R China
2.Zhejiang Univ, Dept Engn Mech, Key Lab Soft Machines & Smart Devices Zhejiang Pr, Hangzhou 310027, Peoples R China
3.Zhejiang Univ, Ctr X Mech, Hangzhou 310027, Peoples R China
4.Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China
5.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China
6.Hokkaido Univ, Global Inst Collaborat Res & Educ, Global Stn Soft Matter, Sapporo, Hokkaido 0600810, Japan
7.CUNY City Coll, Dept Mech Engn, New York, NY 10031 USA
8.Univ Teknol Malaysia, Adv Membrane Technol Res Ctr, Skudai 81310, Johor, Malaysia

Rao, Ping,Li, Tiefeng,Wu, Zi Liang,et al. Ductile "Ice": Frozen hydrogels with high ductility and compressive yielding strength[J]. Extreme Mechanics Letters,2019,28:43-49.

Rao, Ping.,Li, Tiefeng.,Wu, Zi Liang.,Hong, Wei.,Yang, Xuxu.,...&Yang, Wei.(2019).Ductile "Ice": Frozen hydrogels with high ductility and compressive yielding strength.Extreme Mechanics Letters,28,43-49.

Rao, Ping,et al."Ductile "Ice": Frozen hydrogels with high ductility and compressive yielding strength".Extreme Mechanics Letters 28(2019):43-49.