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Differences Between 3D Printer Supplies
Nov 13, 2017

Poly (lactic acid) (PLA) is a new biodegradable material, which is made from renewable starch resources (such as corn). Good mechanical and physical properties. Polylactic acid is suitable for blow molding, thermoplastic and other processing methods, processing is convenient and widely used. Good compatibility and biodegradability. The application of polylactic acid in the field of medicine is very extensive, such as the production of disposable infusion utensils, free disassembly type suture, low molecular weight poly lactic acid drug packaging agent.

Polylactic acid (PLA) has its own unique characteristics besides the basic characteristics of biodegradable plastics. The strength, transparency, and resistance to climate change of traditional biodegradable plastics are inferior to those of conventional plastics. Polylactic acid (PLA) and Petrochemical synthetic plastics have similar physical properties, that is, they can be widely used in manufacturing various applications. Polylactic acid also has good gloss and transparency, which is comparable to that made of polystyrene, which is not available for other biodegradable products. Polylactic acid (PLA) has good tensile strength and ductility, poly lactic acid also can produce all kinds of common processing methods such as melt extrusion, injection molding, blow molding, foam molding and vacuum forming, with the widely used polymer has shaped into a similar condition, it also has the same printing performance with the traditional film.

ABS resin is the output of the largest, the most widely used polymer, it will be PS, SAN, BS various properties of organic unity, both tough, hard, excellent mechanical properties of rigid phase equilibrium. ABS is the three component copolymer of acrylonitrile, butadiene and styrene, A represents acrylonitrile, B represents butadiene, and S represents styrene.

ABS plastic is opaque, the appearance of a pale ivory, non-toxic, tasteless, with tough, hard, rigid characteristics, slow burning, flame yellow, black smoke, burning, burning plastic softening, a special smell of cinnamon, but no melt dripping phenomenon.

ABS plastic with excellent comprehensive performance, excellent impact strength, good dimensional stability, electrical properties, wear resistance, chemical resistance, dyeing, molding and machining better. ABS resin is resistant to water, inorganic salts, alkalis and acids. It is insoluble in most alcohols and hydrocarbon solvents, and is easily soluble in aldehydes, ketones, esters and some chlorinated hydrocarbons.

The difference between printing ABS material and printing PLA polylactic acid:

When printing PLA, it smells like marshmallow, not like ABS's nose

PLA can print large parts models without heating beds, and the corners don't tilt.

The processing temperature of PLA is 200, and ABS is above 220.

PLA has a lower shrinkage, even when printing a larger size model.

PLA has lower melt strength, printing model is easier to shape, surface gloss is excellent, color is gorgeous.

PLA is a crystal, and ABS is a non crystal. When you heat ABS, it slowly converts the gel liquid without changing the state. PLA, like frozen water, goes straight from solid to liquid. Because there is no phase change, ABS does not absorb the heat energy of the nozzle. Part of PLA makes nozzle clogging more risky.

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