Polylactic acid (PLA) is a new type of biodegradable material, made from plant resources (such as corn) the proposed use of renewable raw starch. Good mechanical properties and physical properties. Polylactic acid suitable for blow molding, and other thermoplastic processing methods, processing convenience, is widely used. Compatibility and good biodegradability. Polylactic acid in the pharmaceutical sector is also widely used, such as to produce a one-time infusion appliances, to avoid demolition type surgical sutures, low molecular weight polylactic acid as a drug delivery packaging agent.
Polylactic acid (PLA) biodegradable plastics in addition to the basic features, but also has its own unique characteristics. Traditional biodegradable plastic strength, transparency and resistance to climate change are better than ordinary plastic. Polylactic acid (PLA) and similar basic physical properties of petrochemical synthetic plastics, that is, it can be widely used to manufacture a variety of applications. Polylactic acid also has good gloss and transparency, and polystyrene film is quite prepared, other biodegradable products can not provide. Polylactic acid (PLA) has the most favorable tensile strength and elongation, polylactic acid can also produce a variety of common processing methods, such as: melt extrusion molding, injection molding, blown film molding, foam molding, and vacuum forming, with the current polymers are widely used in a similar molding conditions, in addition it also has the same conventional film printing performance.
ABS resin is the largest output, the most widely used polymers, it PS, SAN, BS various properties of organic unity, both tough and hard, just with the excellent balance of mechanical properties. ABS is an acrylonitrile, butadiene and styrene terpolymer, A representative of acrylonitrile, B for butadiene, S for styrene.
ABS plastic is generally opaque appearance pale ivory, non-toxic, tasteless, both tough and hard, just the characteristics of slow burning, the flame was yellow, smoke, burning plastic after softening, scorching, issued a special cinnamon smell, but no melt dripping.
ABS plastic with excellent performance, excellent impact strength, good dimensional stability, electrical properties, wear resistance, chemical resistance, dyeing, molding processing and machining better. Water-resistant ABS resin, inorganic salts, alkalis and acids, insoluble in most alcohols and hydrocarbon solvents, and easily soluble in aldehydes, ketones, esters and certain chlorinated hydrocarbons.
Print ABS material and print PLA special distinction:
When you print the smell of cotton candy smell PLA, unlike the ABS as the pungent smell bad child
PLA can print large part model without heating the bed situation and the corners will not tilt.
PLA processing temperature is 200 ℃, ABS above 220 ℃
PLA has low shrinkage, even when printing large size model also performed well
PLA has a lower melt strength, excellent print model easier shaping, surface gloss, colorful
Crystalline PLA, ABS is a non-crystalline. When you heat ABS, it will slowly convert the liquid gel, without change of state. Like PLA like frozen water directly from a solid to a liquid. Because there is no phase transition, ABS does not absorb the heat of the nozzle. Part of the PLA, the greater the risk of nozzle clogging.
