additive manufacturing of self-healing elastomers

Nature is excellent in self.
Treatment and 3D plastic surgery;
For example, self
Healthy human organs have functional geometry and microstructure.
However, the tailormade self-
There are huge challenges in repairing materials into complex structures.
Here we report an example of light aggregation --
Self-based additive manufacturing
Resilient structure with freedom
Formal architecture.
This model relies on a molecule-designed photoelastic ink with sulfur-based and disulfur-based, in which the former promotes sulfur-
Ene light polymerization in the process of additive manufacturing, the latter in the self-Treatment process.
We found that the competition between the sulfur and the sulfur bond determines the light curing rate and the self curing rate.
Healing efficiency of photoelastic materials. The self-
A theoretical model consistent with the experimental results was used to understand the healing behavior of the photoelastic body.
By projecting the micro-stereo forming system, we show the single-
Multi-material
Healthy structure of 3D soft actuators, composite materials and architecture electronics.
Compatible with all kinds of optical aggregation-
Based on the additive manufacturing system, the photoelastic material is expected to be free for manufacturing-
Form architecture and efficient self-
Both sides want a cure.
Natural biological materials such as animal organs can be independentheal wounds.
Inspired by natural biological materials, scientists have developed
Healing polymers capable of repairing fractures or injuries on a micro scale and restoring mechanical strength on a macro scale.
Treatment ability usually depends on external treatment.
Agent encapsulates substances released on breaks or internal dynamic bonds, such as dynamic bonded and physical bonds independently reformed after breaks
Induced dissociation.
Since these polymers have the ability to repair, they have a wide range of applications such as flexible electronics, energy sensors, soft robots, lithium batteries, water membranes and biomedical devices.
Despite the success in synthesis and application, the existing
Repairing polymers still faces a key bottleneck --
Lack of 3D shaping.
This bottleneck makes the synthesis
Healing Polymers different from living materials (
Such as human organs)
It usually has functional geometry and microstructure.
In addition, some promising applications of the self
Complex 2D/3D architectures such as soft robots, structural composites, and architecture electronics are required to repair polymers.
However, the demand for the building
The repair of the polymer has not been satisfied enough because of the existing 3D shaping method
Healing polymer only includes molding and direct-
Writing, in the process of forming a complex 3D architecture, is either time consuming or limited.
Here we report the strategy of light aggregation.
Manufacturing based on additives (AM)of self-
Flexible structure with free healing
Formal architecture.
The strategy relies on a molecule-designed photoelastic ink with sulfur-based and two-sulfur-based, which promotes sulfur-
The ene light polymerization in the AM process, the latter in the self-Treatment process.
Using the projection micro-stereo forming system, we show the single-
Multi-material elastic structures with various 3D complex geometry in a short time (e. g. , 0.
6 u2009 mm u2009 × u2009 15 u2009 mm u2009 × u2009 15 u2009 mm/min u2009 13 =. 5u2009mm/min).
These structures can heal the fracture quickly and restore its initial structural integrity and mechanical strength to 100%.
We found that the competition between the sulfur and the sulfur bond determines the light curing rate and the self curing rate.
Healing efficiency of photoelastic materials. The self-
A theoretical model consistent with the experimental results was used to understand the healing behavior of the photoelastic body.
Show potential applications for 3Dprintable self-
We have flexible materials for self-repair.
A healthy 3D soft actuator that can increase its weight by ten times its weightlike stiff-
After fracture, the toughness is restored to more than 90% of the soft composite material and the self-
A health force sensor with a dielectric and conductive phase.
Equipped with fast optical aggregation capability compatible with various AM systems, such as stereo printing, self-assembly
Dual-propagating polymer optical waveguide
Photon print and beam print, new from
Repairing the photoelastic system is expected to open up a promising path for manufacturing structure
Form architecture and efficient self-
Both sides want a cure.