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http://dx.doi.org/10.14775/ksmpe.2018.17.6.016

Relationship between Mechanical Properties and Porosity of Porous Polymer Sheet Fabricated using Water-soluble Particles  

So, Sae-Rom (Graduate School of Mechanical Engineering, Pusan National University)
Park, Suk-Hee (Korea Institute of Industrial Technology(KITECH))
Park, Sang-Hu (School of Mechanical Engineering/ERC-NSDM, Pusan National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.17, no.6, 2018 , pp. 16-23 More about this Journal
Abstract
A polymer porous sheet, which can be applied to diverse wearable devices, has some advantages such as light-weight, high flexibility, high elongation, and so many others. In order to fabricate a porous sheet, water-soluble particles like sugar were utilized frequently, and there has been great advances. However, with our best knowledge, there are not enough reports on the mechanical behavior of porous sheets having different porosity. So, in this work, we tried to find out the relationship between porosity and mechanical deformation of a porous sheet. The process parameters such as a particle size, sheet thickness and PDMS mixing ratio with curing agent were analyzed on the effect of increasing the porosity of a sheet. Also, mechanical deformation of a sheet was tested using a tensile experiment. Through the experimental results, we make a conclusion that a highly porous sheet with thin thickness has high flexibility, and it deformed nearly double elongation comparing to worst one among nine cases.
Keywords
Porous Sheet; 3D Printing; Porosity; Flexible Sensor;
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