The 3D printing, a revolution? Green PLA or ABS pollutant?

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simoni
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The 3D printing, a revolution? Green PLA or ABS pollutant?




by simoni » 20/07/13, 04:23

Hello everybody

To see by the amount of topics on 3D printing, I guess some of you have an 3D printer!

I do not know if you use ABS as a plastic to print (like most people), but it's really not recommended to do it.

In fact, PLA would be more appropriate because in addition to being a fully biodegradable polymer made from corn starch, it is more efficient than ABS.

It prints at lower temperatures (less electricity), is more rigid, non-toxic (unlike ABS that emits toxic fumes ..), offers a glossier finish, is less expensive and more!

It even gives off a pleasant sweet smell when extruded ... PLA is on sale by the same suppliers as ABS. Unless you need a plastic that does not melt at high temperatures (more than 200 degrees Celsius), go for PLA and promote healthy growth of 3D printing : Cheesy:


What plastic will you use in the future? : Evil:
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No to ABS! Yes to 1.75mm PLA green!

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Hic
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Re: 3D printing, a revolution ______? (Eco OR Polluan




by Hic » 20/07/13, 08:40

simoni wrote:Hello everybody

To see by the amount of topics on 3D printing, I guess some of you have an 3D printer!

I do not know if you use ABS as a plastic to print (like most people), but it's really not recommended to do it.

In fact, PLA would be more appropriate because in addition to being a fully biodegradable polymer made from corn starch, it is more efficient than ABS.

It prints at lower temperatures (less electricity), is more rigid, non-toxic (unlike ABS that emits toxic fumes ..), offers a glossier finish, is less expensive and more!

It even gives off a pleasant sweet smell when extruded ... PLA is on sale by the same suppliers as ABS. Unless you need a plastic that does not melt at high temperatures (more than 200 degrees Celsius), go for PLA and promote healthy growth of 3D printing : Cheesy:


What plastic will you use in the future? : Evil:


Revolution!
in the long run, the 3D will lead to individualized production and thus to a progressive segmentation of the market!

That is, the 3D will become a fully-fledged industrial production system,
before democratizing.

Actuellement
Cresilas: The price of 3D printing "" "industrial" "" has collapsed
*** http://pro.01net.com/editorial/597575/c ... -effondre/ ***

"" "an anecdote or, a few days before a big air show, a manufacturer saw his prototype nailed to the ground because of a missing part ... it was 3D printing that allowed the aircraft to take to the air and the builder to shine in front of his customers. "" "
Last edited by Hic the 20 / 07 / 13, 09: 15, 3 edited once.
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"Everything has a price has no value" Nietzche
Torture for Dummies
Forbid to express the idea that the field is acceleration (magnetic and gravitational)
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by Christophe » 20/07/13, 09:03

Revolution too!

: Arrow: https://www.econologie.com/shop/imprimante-3d-c-87.html

I do not have one yet but it will not be long ... for the return, I will have one in my hands: https://www.econologie.com/shop/impriman ... p-511.html

This model works with ABS and PLA ... this is good because ABS is only available in 2 colors but PLA is not better mechanically than ABS ...
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by Rabbit » 20/07/13, 09:40

It would be interesting to know the properties in form
comparative table of the one and the other so that the object
product is adapted to the intended use.

The minimum is to know the temperature ranges
that support these plastics. Solvents that can
the deteriore. Know if it resists in wet or
frankly in the water. Some indications on their
resistance to stretching, compression etc.
In short, information that could guide the decision
purchase of the printer and the choice of plastic
the most suitable.
I have a little research on the net for the PLA but set apart
the green aspect and biodegradability it is not easy to
make a good idea.
Last edited by Rabbit the 20 / 07 / 13, 09: 50, 1 edited once.
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by Christophe » 20/07/13, 09:46

Yes Rabbit, he should have some info on wiki to start:

ABS: http://fr.wikipedia.org/wiki/Acrylonitr ... yr%C3%A8ne

Hold LEGO = ABS


PLA: http://fr.wikipedia.org/wiki/Acide_polylactique

Other sheet about ABS: http://www.materiautech.org/matiere/8/A ... yr%C3%A8ne

Image

ABS is a thermoplastic from the Styrenics family. It is a copolymer of acrylonitrile butadiene styrene. Invented in 1946 in the United States by Mr. DALY, it is mainly used in home appliances, automotive, sporting goods and High Tech products. It is known for its good resistance to shocks, its scratch resistance, its ability to age, its excellent appearance and its ability to be decorated.
activity area

Material commonly used in all sectors of activity where it is desired to combine the impact resistance with a beautiful final appearance.
process

Mainly used in injection, thermoforming, machining and extrusion, it assembles easily and accepts multiple decoration techniques.
sensory aspect

Material generally opaque and shiny with a warm, smooth and slippery touch, and a matte tone.
technical summary

Material having good mechanical strength and scratch. The temperature resistance, fire resistance and UV resistance are average. The resistance to chemicals is passable. The resistance to hot water is good.
chemical compatibility

0
eco conception

Recyclable material.
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by Rabbit » 20/07/13, 09:52

Too easy for ABS. : Cheesy:

It is the PLA that is harder to find.
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by Christophe » 20/07/13, 09:54

And a card for the PLA: http://www.futerro.com/frproducts_pla.html (with 4 technical pdf at the bottom of the page)

PLA (Poly Lactic Acid) is a plastic material derived from annually renewable resources such as, for example, sugar beet, sugar cane, wheat, maize, cellulose, etc. Moreover, it offers particular properties of biocompatibility and biodegradability.

PLA is a polymer known for many years in the field of medical applications such as sutures, orthopedic pins or galenic. This application sector has been developed following the biocompatibility between this polymer derived from lactic acid and the human being. Due to technological developments and process optimization, PLA is now available for mass market markets such as packaging, single-purpose objects, fibers, etc. New developments in terms of product are under way and should in the near future enable PLA to be more present in sustainable applications such as the automotive sector, floor coverings and electronics.

PLA is transformed according to all the techniques available in plastics. However, like all polyesters, PLA is sensitive to the conjugation of moisture and temperature. In order to keep the intrinsic properties of the material, especially in terms of mechanical properties, it is recommended as for PET (polyethylene terephthalate) to dry the polymer before use.

In terms of application properties, the PLA presents:

• significant rigidity.
• very good optical properties and the term transparency and gloss.
• good barrier properties to fats, oils, aromas.
• a level of permeability to intermediate water vapor that provides a level of breathability that can be used in the packaging of ready-to-eat vegetables.
• gas barrier properties (O2, CO2) that allows it to be intermediate to the various polymers of large diffusion.
Surface surface tension for easier printing.
• good retention in the fold (twist retention), property used for the packaging of treats.
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by Christophe » 20/07/13, 09:57

Rabbit wrote:Too easy for ABS. : Cheesy:

It is the PLA that is harder to find.


Sufficient to start : Cheesy:

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by Rabbit » 20/07/13, 10:19

Thank you : Mrgreen:
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by Christophe » 20/07/13, 10:45

You're welcome!

And in terms of resistance to external aggressions (long-term behavior, chemical ...), since PLA is biodegradable, it should be less good than ABS ...

simoni who works in the PLA should be able to tell us more ...
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