Researchers in Poland are studying materials for more unique applications, sharing their results in the recently published ‘Thermoplastic polyurethanes for mining application processing by 3D printing.’
Mining is undeniably hard work, and materials related to this industry must be extremely tough as they are continually vulnerable to harsh elements, as well as abrasive contact and strong chemicals.
TPU is commonly used due to benefits such as:
- High tensile and breaking strength
- Excellent and varying levels of hardness
- High maximal strain
- Excellent elasticity
- Fatigue resistance
- Low deformation, low absorptivity
TPU can be used to make different high-performance parts like hoses, cables, screens, conveyor belts, and more. Previous studies for making products used in mining have centered around injection molding for manufacturing, leading the researchers to point out the obvious limitations of using models that only have a mold:
“The 3D printing technology developing rapidly throughout the recent years allows for high-precision, personalized elements’ printing, made of thermoplastic materials,” stated the researchers. “In design’s terms, however, it is significant to develop and print stuff exhibiting mechanical properties comparable to the mechanical properties of stuff produced by injection molds’ means.
“The use of 3D printing to produce elements help a miner in his work can be possible only when the products produced will be resistant to the conditions prevailing in a mine.”
The researchers are focused on the concept of making a wide range of personalized items for the miners, but testing was required to make sure they would be resistant to the challenging conditions as well as strong enough to hold up to exposure to mine water.
The researchers used Elastollan 1185A to create their samples, drying the material in a convection oven and then extruding it in a customized single-screw extruder.
The researchers left the samples in an aging chamber, immersed in synthetic mine water.
“The aging process was carried out for two, seven, and thirty days at a temperature of 70°C. The sample population for each aging time was five,” explained the researchers.
The aged samples were then stretched on a universal testing machine, along with the native samples, with five measurements made for each.
Overall, testing showed that the synthetic mine water did not affect the samples—evaluating hardness, mechanical properties, and ultimately, examining degradation of the polyurethane structure (using an infrared spectrometer). The researchers noted that there were no ‘new peaks’ in any of the samples that would have caused ‘the emergence of new chemical groups or bonds.’
“To sum up, it can be concluded that polyurethane samples obtained by 3D printing are resistant to the action of synthetic mine water and as such can be widely used in many branches of mining,” stated the researchers upon concluding their study.
TPU has been tested in a variety of different research studies over the years as scientists, manufacturers, and users create new filaments and products as well as working through issues with adhesion, improving post-processing surfaces, and more.
What do you think of this news? Let us know your thoughts! Join the discussion of this and other 3D printing topics at 3DPrintBoard.com.[Source / Images: ‘Thermoplastic polyurethanes for mining application processing by 3D printing’]
You May Also Like
Energizing Turbomachinery Innovation with Additive Manufacturing
Even though the global movement to reduce greenhouse gas emissions is spurring a shift to renewable sources of energy, fossil fuels still generate 64 percent of today’s electricity, according to...
3D Printed Touch Sensors Yield Feeling Future for Cybernetics
Around the middle of the twentieth century, America’s electronic communications infrastructure started to centralize around two newly-forming sciences — cybernetics and information theory — that are still fundamental to everything...
Startup Accelerator, Singapore: Medical, Wearables, and Low-Cost 3D Printing
In this installment of our series, we are looking at the Singapore 3D printing ecosystem. By giving you an overview of some of the 3D printing startups in Singapore, we...
3D Printing Keynotes, Thought Leadership Panels, 250+ Exhibitors, & More at RAPID + TCT 2021
Everybody who’s anybody in the additive manufacturing industry is getting ready for RAPID + TCT 2021, being held at McCormick Place in Chicago from September 13-15. This is the 30th...
View our broad assortment of in house and third party products.