Decreasing the shear stress-induced in-plane molecular alignment by unprecedented stereolithographic delay in three-dimensional printing

@article{Chakraborty2018DecreasingTS,
  title={Decreasing the shear stress-induced in-plane molecular alignment by unprecedented stereolithographic delay in three-dimensional printing},
  author={Patatri Chakraborty and Guanglei Zhao and Chi Zhou and Chong Cheng and D. D. L. Chung},
  journal={Journal of Materials Science},
  year={2018},
  volume={54},
  pages={3586-3599}
}
AbstractThe shear stress-induced in-plane molecular alignment in 3D printed polymer is decreased with an increased stereolithographic delay. The molecular alignment represented by the through-thickness (perpendicular to the layers) permittivity (100 Hz) is reduced by 39% to approach that of the bulk polymer. Consequently, the through-thickness piezoelectric coupling coefficient is decreased by 27%. Two types of resins (Resin 1, acrylate ester resin, viscosity 95 cP; Resin 2, methacrylate resin… 
6 Citations

Enhancing the inherent piezoelectric behavior of a three-dimensionally printed acrylate polymer by electrical poling

A three-dimensionally (3D) printed acrylate polymer without filler, printed by stereolithography, has previously been shown to be inherently piezoelectric in the out-of-plane and in-plane directions

Controlling anisotropy in stereolithographically printed polymers

  • D. Huber
  • Materials Science
    Journal of Materials Science
  • 2018
The ability to print three-dimensional objects was first developed in the 1980s and was originally strictly limited to polymeric materials. Through most of the intervening years, the approach has

Unprecedented sensing of interlayer defects in three-dimensionally printed polymer by capacitance measurement

Interlayer defects in a three-dimensionally (3D) printed structure are expected from the residual stress and commonly observed warpage, but their detection has been challenging and elusive. They are

References

SHOWING 1-10 OF 28 REFERENCES

Piezoelectric behavior of three-dimensionally printed acrylate polymer without filler or poling

We report the piezoelectric behavior of three-dimensionally layer-by-layer printed (bottom-up stereolithography, 21–46-µm layer thickness) polymer without filler or poling, using unmodified

Shear-induced sphere-to-cylinder transition in diblock copolymer thin films

Applying sufficiently strong shear to thin films of a sphere-forming polystyrene–polyisoprene diblock copolymer is shown to induce an order-order transition to cylinders. The transformation is not

3D printing of an interpenetrating network hydrogel material with tunable viscoelastic properties.

Investigation of separation force for constrained-surface stereolithography process from mechanics perspective

Purpose One of the major concerns of the constrained-surface stereolithography (SLA) process is that the built-up part may break because of the force resulting from the pulling-up process.

Study of separation force in constrained surface projection stereolithography

Purpose Recently, the constrained surface projection stereolithography (SL) technology is gaining wider attention and has been widely used in the 3D printing industry. In constrained surface

Multiprocess 3D printing for increasing component functionality

TLDR
Multiprocess 3D printing is a nascent area of research in which basic 3Dprinting is augmented to fabricate structures with multifunctionality, which will lead to local manufacturing with customized 3D spatial control of material, geometry, and placement of subcomponents.