A dual supramolecular crosslinked polyurethane with superior mechanical properties and autonomous self-healing ability

2020 ◽  
Vol 44 (18) ◽  
pp. 7395-7400 ◽  
Author(s):  
Shaobin Xu ◽  
Dekun Sheng ◽  
Yan Zhou ◽  
Haohao Wu ◽  
Haopu Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dynamic Networks ◽  
Self Healing ◽  
Superior Mechanical Properties

The dual-dynamic networks endow polyurethane with excellent mechanical properties and autonomous self-healing ability.

Highly Thermoconductive Yet Ultraflexible Polymer Composite with Superior Mechanical Properties and Autonomous Self-Healing Functionality via Binary Fillers Strategy

2022 ◽  
Author(s):  
Dong Wang ◽  
Dingyao Liu ◽  
JianHua Xu ◽  
JiaJun Fu ◽  
Kai Wu
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Polymer Composite ◽  
High Thermal Conductivity ◽  
Thermal Dissipation ◽  
Self Healing ◽  
Formidable Challenge ◽  
Superior Mechanical Properties

It is still a formidable challenge to develop ideal thermal dissipation materials with simultaneous high thermal conductivity, excellent mechanical softness and toughness, and spontaneous self-healing. Herein, we report the introduction...

Physically and chemically dual-crosslinked hydrogels with superior mechanical properties and self-healing behavior

2020 ◽  
Vol 44 (23) ◽  
pp. 9903-9911 ◽  
Author(s):  
Xueqin Zhang ◽  
Ruqing Zhang ◽  
Shu Wu ◽  
Ying Sun ◽  
Hong Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Self Healing ◽  
Superior Mechanical Properties ◽  
New Type

Using SDS-C18 micelle as a physical crosslinker and SiPU as a multifunctional chemical crosslinker, a new type of dual-crosslinked self-healing hydrogel with excellent stretchability, strength and resilience was synthesized.

Novel antifouling self-healing poly(carboxybetaine methacrylamide-co-HEMA) nanocomposite hydrogels with superior mechanical properties

2013 ◽  
Vol 1 (41) ◽  
pp. 5644 ◽  
Author(s):  
Nina Yu. Kostina ◽  
Shahriar Sharifi ◽  
Andres de los Santos Pereira ◽  
Jiří Michálek ◽  
Dirk W. Grijpma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Self Healing ◽  
Nanocomposite Hydrogels ◽  
Superior Mechanical Properties

Simultaneously achieving superior foldability, mechanical strength and toughness for transparent healable polysiloxane films through building hierarchical crosslinked networks and dual dynamic bonds

2018 ◽  
Vol 6 (46) ◽  
pp. 23425-23434 ◽  
Author(s):  
Youhao Zhang ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Mechanical Properties ◽  
Heat Resistance ◽  
Mechanical Strength ◽  
High Heat ◽  
Self Healing ◽  
High Heat Resistance ◽  
Superior Mechanical Properties ◽  
Crosslinked Networks ◽  
Strength And Toughness

Novel transparent and foldable polysiloxane films simultaneously showing superior mechanical properties, repeatable self-healing ability and high heat-resistance have been developed.

Graphene-assisted fabrication of poly(ε-caprolactone)-based nanocomposites with high mechanical properties and self-healing functionality

2018 ◽  
Vol 42 (12) ◽  
pp. 10348-10356 ◽  
Author(s):  
Yang Wang ◽  
Ting Li ◽  
Piming Ma ◽  
Shengwen Zhang ◽  
Mingliang Du ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Annealing Process ◽  
Self Healing ◽  
Nir Light ◽  
Superior Mechanical Properties

A fast NIR light-induced self-healing PCL nanocomposite with superior mechanical properties was achieved by tailoring the cyclic mechanical annealing process.

scholarly journals Sustainable Polyurethane Networks Based on Rosin with Reprocessing Performance

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3538
Author(s):  
Jiawei Li ◽  
Weiming Yang ◽  
Zhao Ning ◽  
Bin Yang ◽  
Yanning Zeng
Keyword(s):  
Mechanical Properties ◽  
Mechanical Analysis ◽  
Healing Time ◽  
The Self ◽  
Self Healing ◽  
Hot Press ◽  
Polyurethane Networks ◽  
Network Topologies ◽  
Superior Mechanical Properties ◽  
First Time

Rosin is an abundant natural product. In this paper, for the first time, a rosin derivative is employed as a monomer for the preparation of polyurethane vitrimers with improved properties. A novel rosin-based polyurethane vitrimers network was constructed by the reaction between isocyanates (HDI) as curing agent and monomers with alcohol groups modified from rosin. The dynamic rosin-based polyurethane vitrimers were characterized by FTIR and dynamic mechanical analysis. The obtained rosin-based polyurethane vitrimers possessed superior mechanical properties. Due to the dynamic urethane linkages, the network topologies of rosin-based polyurethane vitrimers could be altered, contributing self-healing and reprocessing abilities. Besides, we investigated the effects of healing time and temperature on the self-healing performance. Moreover, through a hot press, pulverized samples of 70%VPUOH could be reshaped several times, and the mechanical properties of the recycled samples were restored, with tensile strength being even higher than the of that of the original samples.

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

Metallic Nanoneedles Arrays for TEM Sample Preparation “Lift-Out”

2012 ◽  
Author(s):  
Romaneh Jalilian ◽  
David Mudd ◽  
Neil Torrez ◽  
Jose Rivera ◽  
Mehdi M. Yazdanpanah ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Sample Preparation ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Beam System ◽  
Transmission Electron ◽  
Nanoneedle Array ◽  
Superior Mechanical Properties ◽  
And Performance

Abstract The sample preparation for transmission electron microscope can be done using a method known as "lift-out". This paper demonstrates a method of using a silver-gallium nanoneedle array for a quicker sharpening process of tungsten probes with better sample viewing, covering the fabrication steps and performance of needle-tipped probes for lift-out process. First, an array of high aspect ratio silver-gallium nanoneedles was fabricated and coated to improve their conductivity and strength. Then, the nanoneedles were welded to a regular tungsten probe in the focused ion beam system at the desired angle, and used as a sharp probe for lift-out. The paper demonstrates the superior mechanical properties of crystalline silver-gallium metallic nanoneedles. Finally, a weldless lift-out process is described whereby a nano-fork gripper was fabricated by attaching two nanoneedles to a tungsten probe.

Polypyrrole/PU hybrid hydrogels: electrically conductive and fast self-healing for the potential application in body-monitor sensor

2021 ◽  
Author(s):  
Zhanyu Jia ◽  
Guangyao Li ◽  
Juan Wang ◽  
shouhua Su ◽  
Jie Wen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Potential Application ◽  
Self Healing ◽  
Electrically Conductive ◽  
Sensor Application ◽  
Hybrid Hydrogels ◽  
Health Monitor

Conductivity, self-healing and moderate mechanical properties are necessary for multifunctional hydrogels which have great potential in health-monitor sensor application. However, the combination of electrical conductivity, self-healing and good mechanical properties...

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