Polylactic acid PLA, also known as corn starch resin, is a new type of biodegradable material. It is prepared from starch raw materials extracted from renewable plant resources (such as corn) and has good biodegradability. PLA3D printer material is a common 3D printing material currently used in FDM 3D printers. Because of its stable performance, low price, and certain environmental protection characteristics, it is deeply loved by users in the 3D printer industry.

The processing temperature of PLA3D printing materials is 170℃~230℃, which has good thermal stability and solvent resistance. PLA polylactic acid melt has good thixotropy and processability, and can be processed in many ways, such as extrusion, spinning, biaxial stretching, injection blow molding, etc. In addition to the good biodegradability of the 3D printed model made of polylactic acid PLA, its gloss, transparency, feel and heat resistance are also very good. Polylactic acid PLA has superior biocompatibility and is widely used in the field of biomedical materials. In addition, PLA can also be used as packaging materials, fibers, and non-manufactured products.

The 3D printer material PLA is under accelerated development and application in China. The project of East China University of Science and Technology to synthesize high molecular weight PLA by direct polycondensation method has passed the appraisal of the Shanghai Education Commission and the Science and Technology Commission. Tsinghua University, Changchun Institute of Applied Chemistry, Tianjin University and Tongji University have carried out more in-depth research and development in the PLA field. At present, more and more large-scale biological fermentation and plastic processing enterprises in China have also participated in the research and development and production of PLA, providing a strong material foundation for the industrialization of PLA.

Compared with other polymer materials, PLA has many outstanding and excellent properties, which make it have a wide range of application prospects in the field of 3D printing.

1. PLA is a new type of biodegradable material, made from starch raw materials extracted from renewable plant resources. Starch raw materials are fermented into lactic acid, and then chemically synthesized into polylactic acid PLA. Therefore, it has good biodegradability. After use, it can be completely degraded by microorganisms in nature, and finally carbon dioxide and water are generated without polluting the environment. However, most common plastics are treated by incineration and cremation, which not only seriously pollutes the environment, but also causes a large amount of greenhouse gases to be discharged into the air.

2. PLA has good gloss and transparency, which is equivalent to the film made of polystyrene. It is a degradable and highly transparent polymer.

3. PLA has good tensile strength and ductility, strong machinability, and is suitable for various processing methods. In the practical application of 3D printers, its good rheological properties and machinability ensure the performance of FDM technology. Adaptability.

4. PLA film has good air permeability, oxygen permeability and carbon dioxide permeability, and has excellent antibacterial and antifungal properties, so it has broad market prospects in the preparation of biomedical materials by 3D printers.

PLA (polylactic acid) has become the most commonly used 3D printer material for all FDM 3D printers on the market due to its excellent processability and biodegradability. PLA3D printer models are easier to shape. The surface is glossy and colorful. PLA will not release a pungent smell like ABS plastic wire during the 3D printing process, and its deformation rate is small, only 1/10 to 1/5 of ABS consumables.

The PLA3D printer material is absolutely harmless to the human body and completely biodegradable, which makes it have unique advantages in the field of disposable products such as disposable tableware and food packaging materials. But at the same time, the disposable tableware processed by PLA raw materials is not resistant to temperature, oil, and microwave heating lamps. In addition, the application of PLA3D printer materials in the automotive industry and electronic fields has gradually been accepted by users.