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Knowledge:
What is the most commonly used material for 3D printing? It is estimated that the first material that comes out of the mind of people familiar with the 3D printing industry is Guang Min resin. Guang Min resin is a kind of 3D printing material, it is similar to ABS material, the surface is smooth, high precision, the surface can spray paint, hardness can also be. Guang Min resin is very suitable for printing prototype models, such as design models, but also in addition to appearance, functional requirements, such as high-temperature resistance or a higher toughness.
Guang Min resin is formed by SLA/DLP technology, SLA is also called photocuring molding, it uses ultraviolet light or other beams to solidify liquid Guang Min resin. Guang Min resin, literally means to light-sensitive resin materials, light irradiation will be rapid curing molding.
Compared to the SLA, DLP printed objects, smooth surface, high quality molding, so many DLP models are positioned as jewelry grade. The following detailed introduction Guang Min resin characteristics and applications.
Characteristics of Guang Min Resin
Guang Min resin is generally liquefaction, the use of this material printing objects generally have high strength, high temperature resistance, waterproof and other characteristics. However, Guang Min resin material does not use long-term easy to lead to hardening.
The specific characteristics of the photosensitive resin are the following:
1, low viscosity;
2, curing shrinkage;
3, fast curing rate;
4, small swelling;
5, high light sensitivity;
6, high curing degree;
7, high wet strength.
In addition, Guang Min material price relative to desktop-grade PLA is more expensive, at the same time, because of the need to use it into the utensils, so it is easy to lead to waste phenomenon.
Application of photosensitive resin
Guang Min resin material 3D printing of the finished product details, high surface quality, can be painted by spray paint and other processes. However, Guang Min resin printed items if exposed in light for a long time, will gradually become brittle, yellow. This material is often used to print fine models that require high precision and surface quality, complex design models, such as prototypes, handsets, jewelry or precision fittings, and so on. But not suitable for printing large parts of the model, if you need to print large pieces, need to disassemble printing.
In addition to the above mentioned high toughness, high temperature resistance and ordinary Guang Min resin, there are also translucent and fully transparent Guang Min resin. It is important to note, however, that both translucent and fully transparent printing will require post-grinding and, where not, transparency will be slightly less transparent.
Guang Min resin material is not only good molding effect, but also cheaper, so it has become the preferred material for printing prototype . The cost of testing the appearance and function of a sample before the product goes on sale is very cost-effective and can save a lot of money compared to the direct production without proofing.
However, there are also many customers have such a question, Guang Min resin as a liquid material, chemical smell also have, then it is toxic?
In fact, Guang Min resin materials can not be simply said that it is toxic or non-toxic, toxicity must be combined with the dose to talk, generally normal light-cured, there is no problem. Light-cured resin is the matrix resin of UV-curing coating, which is composed of photoinitiator, active diluent and various auxiliaries, that is to say, light-curing coating is made up of light-cured resin. Photo-curing coating is the earliest example of large-scale successful application of light-curing technology in industry, and it is also the largest product in the field of light-curing industry, so it is safe to contact.
In fact, from the chemical materials used in our daily life, it is not difficult to find that most of the polymers are non-toxic, usually used in plastic, in fact, now a lot of melamine-like tableware, that is, the kind of plastic a bit like porcelain is polymelamine. Melamine should be familiar to everyone, but its polymer is non-toxic, of course some black workshop raw materials or processes are not good, that is toxic.
Therefore, worried that Guang Min resin materials are toxic, users who will cause harm to the human body can rest assured that as long as you purchase regular Guang Min resin materials, in addition to the need to pay attention to ventilation protection during the printing process, After 3D printing molding, the article is non-toxic, can rest assured of use and contact.
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