Moisture Sorption and Degradation of Polymer Filaments Used in 3D Printing

Experimental research of the moisture sorption process of 12 typical filaments used for FFF was performed in atmospheres with a relative humidity from 16 to 97% at room temperature. Materials with high moisture sorption capacity were revealed. Fick's diffusion model was applied to all tested ma...

Full description

Saved in:
Bibliographic Details
Published in:Polymers 2023-06, Vol.15 (12), p.2600
Main Authors: Aniskevich, Andrey, Bulderberga, Olga, Stankevics, Leons
Format: Article
Language:English
Subjects:
3-D printers
3D printing
Carbon
Commercial printing industry
Degradation
Diffusion coefficient
Filaments
Humidity
Injection molding
Laboratories
Manufacturing
Mechanical properties
Modulus of elasticity
Moisture absorption
Moisture content
Moisture effects
Polymer industry
Polymers
Printing industry
Reduction
Relative humidity
Room temperature
Sorption
Stiffness
Three dimensional printing
Viscoelasticity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Experimental research of the moisture sorption process of 12 typical filaments used for FFF was performed in atmospheres with a relative humidity from 16 to 97% at room temperature. Materials with high moisture sorption capacity were revealed. Fick's diffusion model was applied to all tested materials, and a set of sorption parameters was found. The solution of Fick's second equation for the two-dimensional cylinder was obtained in series form. Moisture sorption isotherms were obtained and classified. Moisture diffusivity dependence on relative humidity was evaluated. The diffusion coefficient was independent of the relative humidity of the atmosphere for six materials. It essentially decreased for four materials and grew for the other two. Swelling strain changed linearly with the moisture content of the materials and reached up to 0.5% for some of them. The degree of degradation of the elastic modulus and the strength of the filaments due to moisture absorption were estimated. All tested materials were classified as having a low (changes ca. 2-4% or less), moderate (5-9%), or high sensitivity to water (more than 10%) by their reduction in mechanical properties. This reduction in stiffness and strength with absorbed moisture should be considered for responsible applications.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15122600