difference between pla and abs
The difference between PLA and ABS is a topic that often arises in discussions about 3D printing materials. Both PLA (Polylactic Acid) and ABS (Acrylonitrile Butadiene Styrene) are popular choices for 3D printing, but they have distinct characteristics that make them suitable for different applications. In this article, we will explore the key differences between PLA and ABS, including their properties, uses, and printing conditions.
Properties of PLA
PLA is a biodegradable thermoplastic derived from renewable resources such as cornstarch and sugarcane. It has several properties that make it a preferred choice for certain 3D printing applications:
1. Environmental friendliness: PLA is biodegradable, which means it can break down naturally over time, making it a more sustainable option for eco-conscious users.
2. Easy to print: PLA has a lower melting point than ABS, which makes it easier to extrude and print with. This results in faster printing speeds and lower risk of nozzle clogging.
3. Vibration resistance: PLA prints tend to be more flexible and less prone to warping, which is beneficial for creating objects that require vibration resistance.
4. Odor: PLA emits a sweet, corn-like odor when heated, which can be a concern for some users, especially in enclosed spaces.
Properties of ABS
ABS is a petroleum-based thermoplastic that is known for its durability and versatility. Here are some of the key properties of ABS:
1. High strength: ABS has excellent mechanical properties, including high impact resistance and toughness, making it suitable for printing functional parts and prototypes.
2. Heat resistance: ABS can withstand higher temperatures than PLA, which allows for printing objects that require exposure to heat.
3. Odor: ABS emits a strong, unpleasant odor when heated, which can be a concern for users in enclosed spaces.
4. Smell: The odor from ABS can be persistent, even after the print has cooled, which may be a drawback for some users.
Printing Conditions
When printing with PLA or ABS, it is important to consider the following printing conditions:
1. Bed temperature: PLA requires a heated bed temperature of around 40-60°C, while ABS requires a higher bed temperature of 80-100°C to prevent warping.
2. Nozzle temperature: PLA has a lower melting point, typically around 180-220°C, while ABS requires a higher nozzle temperature of 210-250°C.
3. Printing speed: PLA can be printed at higher speeds due to its lower melting point and lower risk of warping. ABS may require slower printing speeds to ensure proper adhesion and detail.
Applications
The choice between PLA and ABS depends on the intended application of the printed object. Here are some examples of common uses for each material:
1. PLA: Ideal for printing prototypes, models, and decorative items. It is also suitable for printing objects that require flexibility and vibration resistance.
2. ABS: Suitable for printing functional parts, prototypes, and objects that require high strength and heat resistance. ABS is often used in the manufacturing of toys, automotive parts, and consumer electronics.
In conclusion, the difference between PLA and ABS lies in their properties, printing conditions, and applications. While PLA is a more eco-friendly option with easier printing and lower cost, ABS offers higher strength, heat resistance, and versatility. Understanding these differences can help users make informed decisions when selecting the appropriate 3D printing material for their projects.
