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What are the common resin materials for SLA and DLP UV Curing 3D printers?

December 31, 2019

Among desktop 3D printers, fused deposition 3D printer (FDM) has no doubt advantages in price and versatility, and it is booming all over the world. However, when higher precision and better surface details are needed, low-cost SLA and DLP 3D printers are clearly dominant. More and more economical SLA and DLP 3D printers have entered the market, which also leads to the development of photosensitive resin technology. Today, we will show you the most demanding photosensitive resin materials in the market.

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At the beginning of the development of general resin materials, although manufacturers of 3D printing resin equipment sold their proprietary materials, a large number of resin manufacturers, including madesoid, makerjuice and Spot-A, appeared to respond to the market demand. In the beginning, the color and performance of desktop resin were limited, at that time, there might be only yellow and transparent materials. In recent years, the color has expanded to orange, green, red, yellow, blue, white and other colors.

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A rigid resin, usually used in desktop 3D printers, in which the photosensitive resin is somewhat brittle and easy to break. To solve these problems, many companies have begun to produce stronger and more durable resins. For example, formlabs' new tough resin material can balance strength and elongation, providing better impact resistance and strength for 3D printing prototypes, such as manufacturing parts requiring precision components. Prototype of the part or of the bayonet joint.

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Casting resin, the traditional investment casting resin manufacturing process is complex, the production process is complex, due to the limitations of the mold, jewelry design freedom is limited, especially compared with 3D printing wax mold, wax mold manufacturing process mold more. The expansion coefficient of the resin can not be very high, and all polymers need to be burned in the combustion process, leaving only the perfect final product shape. Otherwise, any plastic residue will cause casting defects and deformation. In this regard, equipment manufacturer sprint ray and professional material manufacturer fun to do provide this resin, while domestic plastic technology also introduces resin material CA for investment casting.

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Flexible resin manufacturers include formlabs, fsl3d, Spot-A, carbon, plastic, etc. These resins are characterized by medium hardness, wear resistance, and re stretch materials. The material is used as part of hinges and friction devices that require repeated stretching.

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Elastic resin is a kind of material which shows excellent elasticity under high strength extrusion and repeated stretching. Formlabs flexible resin is a very soft rubber based material, which has thin layer thickness and thick layer thickness when printing. It will become very resilient and impact resistant. Its application possibilities are endless. This new material will be used to create perfect hinges, shock absorbers, contact surfaces and other engineering applications for those interested in creativity and design.

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High temperature resin, high temperature resin is the research and development direction that many resin manufacturers have been concerned about, because we know that for the field of liquid resin curing, it has been plagued by the resin for consumers and industrial applications. The thermal deformation temperature of cyanate ester resin of carbon is as high as 219 ° C. For die and machine parts in the automotive and aerospace industries, good strength, stiffness and long-term thermal stability are maintained at high temperatures. At present, high temperature resistant resin materials challenge the hot deformation temperature (HDT) to 289 ℃ (552 ℉). In the field of high temperature resistant resin, formlabs also launched the latest high temperature resistant materials.

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Formlabs, a desktop 3D printer manufacturer, is unique in the field of biocompatible resins. Formlabs dental SG material complies with EN-ISO 10993-1:2009 / ac:2010 and USP VI standards, safe and environmentally friendly. The translucency of resin can be used as surgical material and guide drill guide. Although it is aimed at the dental industry, this resin can also be used in other fields, especially in the whole medical industry.

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Ceramic resin, when it comes to ceramic resin, has to mention the 3D printing technology of high temperature ceramics in California. The researchers used ultraviolet light to cure the rapidly occurring ceramic precursor monomer, "precursor conversion polymer.". Ceramics produced from these polymers contract uniformly. There are few pores. This resin can overheat after 3D printing, resulting in dense ceramic parts. Using this technology, 3D printing of super strong ceramic materials can withstand temperatures of more than 1700 degrees Celsius. In the market, the main technology of ceramic light curing is to add ceramic powder to the light curing solution, and uniformly disperse the ceramic powder in the solution by high-speed stirring to prepare ceramic slurry with high solid content and low viscosity. Then, the ceramic slurry is solidified directly layer by layer on the light curing molding machine, and the blank of ceramic parts is accumulated. Finally, the ceramic parts are obtained by drying, degreasing and sintering.

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Sunlight resin, sunlight is an interesting resin, different from the resin cured under UV light, which is cured under normal sunlight, so it is no longer dependent on UV light, and can be cured with LCD screen. This resin is expected to significantly reduce the cost of DLP 3D printing, with a very good prospect

Source from: https://creality3dpro.store/collections/3d-printers