by • April 25, 2016 • No Comments
A range of new oligomers may assist drive the 3D printing industry forward, delivering a whole range of improvements to the following generation of 3D printing ink.
Dymax analysed a range of various oligomers and has discovered a range of Polyurethane Acrylate recipes that may be utilized in a range of various 3D printing solutions. It discovered that various oligomers may be utilized for various applications, too, and tested three various types to prove its theories.
Oligomers are relatively easy molecular complicatedes turn it intod up of repeating monomer units. Polymers are much additional complicated. In science, yet, nothing is easy and the likes of Collagen are in fact considered hetero-oligomers, so what looks like a easy marriage of proteins and nucleic acids is a branch of science all of its own.
How does this affect 3D printing?
Oligomers are discovered in every 3D printing ribbon and can have a worthwhile impact on Oxygen inhibition, the thermal expansion coefficient, heat distortion temperatures, shrinkage and colour stability. A swift curing polymer, that is not prone to Oxygen inhibition is the ultimate goal for a few applications, but not all of them. Others bring hardness, flexibility or other qualities to the recipe of the printing filament and the finished product itself.
The holy grail of 3D printing is, of course, to replace traditional making systemes, but we are not there yet. The speed of the printing devices and the final high end of the materials is not really a match for traditional systemes.
It is significant to note, yet, that we have a vast array of various plastics and production techniques, while 3D printing is in its infancy and requires to turn it into fully to come up with its owns solutions. A lot of the current innovation, especially when it comes to the composition of the materials, is an version of traditional plastics.
Heat is a friend and an enemy in 3D printing
Heat distortion is a quite real problem in the production system as thermoset plastics frequently complete a additional uniform finish than current 3D printed alternatives. Changing the construction of the oligomers may fix the issue, but it is significant not to lose other qualities while chasing perfection in the construction system.
Now Dymax, and others, are starting to see how 3D printing materials require to alter to manufacture the many of the production system, pretty than compensate for it. In the latest study it analysed a number of oligomers with gel permeation chromatography, viscosity comparisons and how they turn it into a 3D version. Each oligomer was combined with Methacrylate monomer, Benzoylformic acid methyl ester, Benzophone and TPO to turn it into a filament.
We all require structure
Essentially it focussed on changing the structure of the Polyurethane Acrylates, via easy in-line structures and additional high end multi-branch systems.
The results were astonishing. Simply changing the structure led to filaments assisted Dymax double the tensile durablity, with twice the tensile durablity, almany triple the viscosity and reduce water absorption by additional than 75%.
Inevitably, as with all materials, there is a compromise to manufacture and there is not one magic recipe, yet. Similar to metal alloys, every structure has its own durablitys and weakness. That means we may be heading to an era of specialist filaments, with one-of-a-kind jobs.
Is it time to get focussed?
We can leave the world of catch-all filaments behind and get focussed materials. This is may already the case in the commercial world, but the home user may soon find themselves with a sewing box full of various filaments for every specific job.
This study is the initially step down an amazing new road of material science, that may well become an integral part of the 3D printing world in the years ahead. We’re only waiting to see what takes place following.
by admin • March 5, 2017
by admin • November 28, 2016
by admin • November 28, 2016