engineering plastics
Engineering plastics refer to industrial plastics used as industrial parts or shell materials, which have excellent strength, impact resistance, heat resistance, hardness and aging resistance. Engineering plastics are the most widely used 3D printing materials, such as ABS, PC, PLA and nylon.
2.？ Photosensitive resin
Photosensitive resin, ultraviolet (UV) resin, consists of polymer monomer and prepolymer, in which a photo (UV) initiator (or photosensitizer) is added. Under the irradiation of ultraviolet light with a certain wavelength (2500 ~ 300 nm), it can immediately cause polymerization to complete curing. Photosensitive resin is generally liquid and can be used to make high-strength, high-temperature resistant and waterproof materials.
3. Rubber material
Rubber materials have the characteristics of various grades of elastic materials, and these materials have hardness, elongation at break, tear strength and tensile strength, which makes them very suitable for applications requiring non-slip or soft surfaces. Rubber products printed in 3D mainly include consumer electronic products, medical equipment, automobile interiors, tires and gaskets.
4.？ metal material
In recent years, 3D printing technology has been gradually applied to the manufacture of actual products, especially for metal materials. In the field of national defense, developed countries in Europe and America attach great importance to the development of 3D printing technology, and do not hesitate to invest huge sums of money in research. 3D printing of metal parts has always been the focus of research and application. Metal powder used in 3D printing generally requires high purity, good sphericity, narrow particle size distribution and low oxygen content. At present, the metal powder materials used for 3D printing mainly include titanium alloy, cobalt-chromium alloy, stainless steel, aluminum alloy materials, and precious metal powder materials such as gold and silver used for printing jewelry.
5. Ceramic materials
Ceramic materials have excellent characteristics such as high strength, high hardness, high temperature resistance, low density, good chemical stability and corrosion resistance, and are widely used in aerospace, automobile, biology and other industries. However, due to the hard and brittle characteristics of ceramic materials, processing and molding are particularly difficult, especially complex ceramic parts need to be molded with molds. Mold processing costs are high, and the development cycle is long, so it is difficult to meet the needs of product upgrading.
6. Other 3D printed materials
In addition to the 3D printing materials mentioned above, there are colored gypsum materials, artificial bone powder, cell biomaterials, sugar and so on.