ST Bound Metal

Customized 3D Printed TPU Products for Mining?

Inkbit

Share this Article

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.

Sample’s geometry

“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.

Samples being 3D printed

The aged samples were then stretched on a universal testing machine, along with the native samples, with five measurements made for each.

Stress at the yield strength, MPa

Stress at break, MPa

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.

IR spectrum of the tested samples

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’]

Share this Article


Recent News

New Hardware, Collaborations & More at RAPID+TCT 2022

Covestro Joins Stratasys’s 3D Printing Materials Ecosystem with Rail-Ready Nylon



Categories

3D Design

3D Printed Art

3D Printed Food

3D Printed Guns


You May Also Like

3D Printing News Briefs, May 18, 2022: Xerox, Full-Color Materials, & More

In 3D Printing News Briefs today, we’re starting off with metal, as RIT and Xerox are partnering to advance metal AM with a new system installation. Moving on, Stratasys has...

3D Printing Webinar and Event Roundup: May 15, 2022

This is a big week in the additive manufacturing industry—RAPID + TCT is here! But that’s not the only event in town; there will also be webinars on topics like...

Stratasys Advances Applications with New Materials, Software, and Composite 3D Printers

In the last two months, Stratasys Ltd. (NASDAQ: SSYS) has qualified its Antero 840CN03 filament for 3D printed aerospace applications, published its first Sustainability Report, announced the latest two members of its...

Featured

Buying the Death Star: Ultimaker Merges with MakerBot. Takes Stratasys Investment

When I used to work at Ultimaker, Makerbot was the enemy. They were closed, corporate, didn’t care about customers and didn’t care about values and open hardware. We did everything...