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A self-healing elastomer-based reconfigurable actuator and its preparation method

An actuating, self-healing technology, applied in chemical instruments and methods, manufacturing tools, program-controlled manipulators, etc., can solve the problems of limiting the variety of deformation and the practical application of reconfigurable actuators

Active Publication Date: 2022-03-18
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the variety of deformations and the practical application of reconfigurable drives
Therefore, it remains a challenge to devise a simple and general method to fabricate reconfigurable drives and achieve facile reconfiguration

Method used

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  • A self-healing elastomer-based reconfigurable actuator and its preparation method
  • A self-healing elastomer-based reconfigurable actuator and its preparation method
  • A self-healing elastomer-based reconfigurable actuator and its preparation method

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Embodiment 1

[0038] Materials: dimethylglyoxime (DMG, 98%), acetone (99.7%) were purchased from Sinopharm Chemical Reagent (China). Polytetrahydrofuran diol (PTMG, Mn=1000 g mol-1) was purchased from Aladdin (China). Diethylenetriamine (DETA, 99.0%) was purchased from Alfa Aesar (China). Diphenylmethane diisocyanate (MDI, 2,4'-MDI / 4,4'-MDI=50 / 50, 99.6%) was purchased from Wanhua Chemical (China). Chloroform (99.8%) was purchased from Yonghua Chemical (China). Reagents were used without further purification unless otherwise stated.

[0039] Synthesis of PDOUs

[0040] Add polytetrahydrofuran glycol (PTMG) into the reaction flask, raise the temperature to 110°C, and vacuumize for 2 hours to remove the adsorbed water in the polytetrahydrofuran glycol. The vacuum was then removed, and a nitrogen balloon was inserted to maintain N 2 Atmosphere, after slowly adding diphenylmethane diisocyanate (MDI) at 110°C, N 2 Reaction under atmosphere for 2h. Then keep N 2 The whole system was lowere...

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Abstract

The invention relates to a self-healing elastomer-based reconfigurable actuator and a preparation method thereof, which are composed of a self-healing non-cross-linked PDOU film NPDOU and a cross-linked PDOU film CPDOU. The present invention is a reconfigurable soft actuator based on intrinsic self-healing polyoxime urethane elastomer, PDOU elastomers with different cross-linking degrees show different responsiveness to solvents, and can heal seamlessly; the assembled actuator / Robots can be reprogrammed to display multiple actuation modes by simple tailoring and reassembly without any external stimuli, paving a simple, powerful, and versatile path for constructing complex soft robots.

Description

technical field [0001] The invention belongs to the field of soft actuators, in particular to a reconfigurable actuator based on self-healing elastic body and a preparation method thereof. Background technique [0002] Compared with rigid drives, soft drives have the advantages of low cost, low density, high degree of freedom, high adaptability, and good human-computer interaction interface. They are widely used in soft robots, artificial muscles, micro-equipment, flexible sensing and other fields. . Actuators are the key components for generating motion in soft robots, which makes them crucial to the development of soft robots and have received extensive attention. Smart actuated materials can exhibit reversible shape transitions in response to stimuli such as solvents, heat, light, electric field, magnetic field, humidity, etc. The anisotropic structure is key to the actuator's ability to deform or move in response to stimuli. Currently available methods for preparing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08J5/18B25J9/00B32B27/40B32B27/08C08L75/08
CPCC08G18/6685C08G18/6666C08G18/4854C08G18/3819C08G18/3228C08J5/18B25J9/00B32B27/40B32B27/08C08J2375/08B32B2307/51
Inventor 游正伟楼佳铭
Owner DONGHUA UNIV
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