3D printing of carbon fiber-filled conductive silicon rubber

Huang, Panling; Xia, Zhidong; Cui, Song

doi:10.1016/j.matdes.2017.12.051

Cited by 85 publications

(48 citation statements)

References 46 publications

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“…As example for polymer melts we chose a thermoplastic poly-urethane (TPU). This thermoplastic material type can be used for the fabrication of elastic products in typical polymer processing approaches such as melt-spinning [27], 3D-printing [28,29] and the production of flexible sensors [30]. Here, rheological modelling can potentially yield further insights on macromolecular processes, which are directly connected to the frequency dependent properties.…”

Section: Introductionmentioning

confidence: 99%

A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data

2020

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When characterizing the viscoelastic properties of polymers, shear rheological measurements are commonly the method of choice. These properties are known to affect extrusion and nozzle-based processes such as fiber melt spinning, cast film extrusion and 3D-printing. However, an adequate characterization of shear thinning polymers can be challenging and still insufficient to not only describe but predict process relevant influences. Furthermore, the evaluation of rheological model systems in literature is mostly based on stress–relaxation experiments, which are rarely available for various polymeric materials. Therefore, a simple approach is presented, that can be used to evaluate and benchmark a wide range of rheological model systems based on commonly accessible frequency sweep data. The approach is validated by analyzing alginate PH176 solutions of various concentrations, a thermoplastic poly-urethane (TPU) Elastollan 1180A melt, the liquid silicon rubber Elastosil 7670 and a polycaprolactone (PCL) fiber-alginate composite system. The used rheological model systems, consisting of simple springs and dashpots, are suitable for the description of complex, viscoelastic material properties that can be observed for polymer solutions and gel-like systems. After revealing a suitable model system for describing those material properties, the determination and evaluation of relevant model parameters can take place. We present a detailed guideline for the systematic parameter revelation using alginate solutions of different concentrations as example. Furthermore, a starting point for future correlations of strut spreading in 3D-bioprinting and model parameters is revealed. This work establishes the basis for a better understanding and potential predictability of key parameters for various fabrication techniques.

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Section: Introductionmentioning

confidence: 99%

A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data

2020

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“…This is a benefit for 3D printing because it is expected that a fluid is viscous enough to sit in the nozzle before being pushed out with less viscosity. As soon as the PDMS leaves the nozzle, it regains the original viscosity and the printed threads retain their shapes [157,158].…”

Section: Polydimethylsiloxane (Pdms)mentioning

confidence: 99%

Synthetic Polymers for Organ 3D Printing

Liu

Wang

2020

Polymers

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Three-dimensional (3D) printing, known as the most promising approach for bioartificial organ manufacturing, has provided unprecedented versatility in delivering multi-functional cells along with other biomaterials with precise control of their locations in space. The constantly emerging 3D printing technologies are the integration results of biomaterials with other related techniques in biology, chemistry, physics, mechanics and medicine. Synthetic polymers have played a key role in supporting cellular and biomolecular (or bioactive agent) activities before, during and after the 3D printing processes. In particular, biodegradable synthetic polymers are preferable candidates for bioartificial organ manufacturing with excellent mechanical properties, tunable chemical structures, non-toxic degradation products and controllable degradation rates. In this review, we aim to cover the recent progress of synthetic polymers in organ 3D printing fields. It is structured as introducing the main approaches of 3D printing technologies, the important properties of 3D printable synthetic polymers, the successful models of bioartificial organ printing and the perspectives of synthetic polymers in vascularized and innervated organ 3D printing areas.

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“…As the Internet of Things (IoT) is prevalent, it urges for fitness tracking during various activities to maintain a health record and sports performance. A carbon fiber-filled conductive silicon rubber composite was used to print a strain sensor and analyze the wrist motion [210]. Inkjet-printed strain sensors were attached to compression wear that is tightly attached to the body.…”

Section: Applicationsmentioning

confidence: 99%

A Review of Printable Flexible and Stretchable Tactile Sensors

2019

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Flexible and stretchable tactile sensors that are printable, nonplanar, and dynamically morphing are emerging to enable proprioceptive interactions with the unstructured surrounding environment. Owing to its varied range of applications in the field of wearable electronics, soft robotics, human-machine interaction, and biomedical devices, it is required of these sensors to be flexible and stretchable conforming to the arbitrary surfaces of their stiff counterparts. The challenges in maintaining the fundamental features of these sensors, such as flexibility, sensitivity, repeatability, linearity, and durability, are tackled by the progress in the fabrication techniques and customization of the material properties. This review is aimed at summarizing the recent progress of rapid prototyping of sensors, printable material preparation, required printing properties, flexible and stretchable mechanisms, and promising applications and highlights challenges and opportunities in this research paradigm.

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3D printing of carbon fiber-filled conductive silicon rubber

Cited by 85 publications

References 46 publications

A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data

A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data

Synthetic Polymers for Organ 3D Printing

A Review of Printable Flexible and Stretchable Tactile Sensors

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