Production of plastic parts by 3D printing method
Plastic parts made with 3D printing: Making plastic parts using a 3D printer is one of the ways to support health and prevention personnel for the corona virus. Recently, for example, the urgent need for a ventilator in Brescia, Italy. A series of people caused it. According to local sources, the part, which was manufactured in other ways at a cost of nearly $ 11,000, was made for just $ 1 using a 3D printer via FDM.
Studies on the New Corona virus have shown that the virus retains its pathogenicity for up to a series of days in the form of
placement on hard surfaces such as steel and glass, while copper metal due to its special properties A person who has it in
contact with the newly flat gas corona virus causes its structure to disintegrate and destroys it in a series of hours.
The point that has caught the attention of researchers is how this virus can remain on copper surfaces and its alloys for so long! Research on other viruses, such as influenza and icola virus, has shown that these viruses disintegrate after only a few minutes of exposure to surfaces of a copper product or that copper alloys, such as rice, disintegrate. They will lose their pathogenicity.
Adding copper oxide to materials such as polypropylene, polyester and polyamide in a special process can Lead to antibacterial and antiviral polymer compounds. These compounds can be used to build desks, chairs, and optional components in hospital facilities that significantly reduce the transmission of nosocomial infections. Large-scale research is currently underway to make polymer fibers with the addition of copper particles to be used in the manufacture of bedspreads and item masks.
Ways to create a plastic product
Production of plastic parts Today, we can see plastics everywhere in our livelihood, bags and nylons, juice bottles, home
furniture, cars, etc. are all times when plastic is used in their creation. But how do they create these products? Is the
construction process of all products the same as plastic?
In general, the method of plastics is as follows: at the beginning of the raw materials (plastic granules, flakes or powders) are melted by heat and the melt is poured into the mold in which the last material is embedded and established. . The melt is poured into the mold, after cooling, it is taken out of the mold in such a way that it takes on the shape of the final property. Production of plastic parts In this scientific article, we will evaluate various ways of making plastics: Injection molding
Injection molding is the most popular way to make plastic products. In this way, which is done by a plastic injection machine, the plastic material is first melted inside the machine and then injected into the inside of the mold by a moving spiral. The injected melt, after cooling (while holding the mold), is thrown out of the mold by the mold pins. ..
In injection molding, different types of plastics are used, but it should be careful not to use plastics with the following MFI, because due to the motive of moving under the melt, the mold may not be empty and pressure will be applied to the machine. Special property for determining plastic parts and recommending to manufacturers: 1- Melt viscosity: which determines the property of the polymer process method. TFF has a very high melt viscosity and nylon has a low melt viscosity.
2- Molding temperature: which is the minimum process temperature for the viscosity of the melt (tarsing to a suitable molding surface). Molding arrives. 3- Hardness and flexibility: Non-flexible PVC (homopolymer) and heat-resistant polyesters are very tiring and tough. And EVA and LDPE plastics are very flexible.
4. Strength: Engineering plastics require high strength while olefinic polymers (PE and PP) do not require high strength. 5- Hardness: Flexible heat often has a very hard surface. Production of plastic parts 6- Scratch resistance: Heat hard polyester and UF have good scratch resistance and polystyrenes have poor scratch resistance despite high hardness.
7- Brightness: Cellulose acetate-polysulfones have a bright and bright surface. 8- Transparency: The transparency of plastics is determined by the percentage of light reflection. Few plastics have good transparency, such as MMA-PS and polycarbonates. 9- Resistant to yellowing: Polystyrenes turn yellow when exposed to light, but polymethyl methacrylates are resistant to yellowing.
10 - Impact strength: Polystyrene has poor strength, and at the same time a plastic like ABS has good impact strength, although it has a lot of hardness. For example, a special property that could be considered authoritative for plastics was the power mentioned in the following cases. 11- Price Production of plastic parts