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HOW ARE THE PLASTICS CLASSIFIED?

Injection molding of plastic raw materials that are used in systems in general are classified according to the following basic characteristics.

By chemical structure

According to the structural features of

According to the reactions by heat

According to the application areas


1. ACCORDİNG TO CHEMİCAL STRUCTURE

a) the polyolefins Plastics Polyethylene (PE),
Polypropylene (PP),
Polypropyethylene
Linear low density (LLDPE)

b) Sitrenler (styrenes)
Polystyrene (PS),
Acrylonnitrile styrene (AS),
Acrylonnitrile butadiene styrene (ABS),

c) Polyamitler (Polyamides)
Nylon

d) Polyether
Polycarbonate (PC)
Polyoxymethylene (POM),
Polysulfone (PSF)

e) Polyesterler (Polyesters)
Polyethylene Terephthalate (PET)
Acrylics Polymethylmethacrylate (PMMA)

2.ACCORDING TO STRUCTURAL CHARACTERISTICS

Crystalline Polymers:
Polymers crystallize in different crystal forms, the different molecular forms of crystal gruplaroluşturabilir, PE, PP, PA, POM, PBT, etc.

3. ACCORDING TO THERMAL

THERMOPLASTICS:
Thermoplastic is applied to a certain temperature range, which allows easy controllability. The cooling effect of the molded parts are taken in a balanced way. Continuous product and process can be repeated again, melted in a shape other.

THERMOSETS:
Termosetplastic are heated mold and they can shape the chemical reaction. However, they are not shaped again with heating. Once they remain in a fixed manner. Phenol Formaldehyde is a material of this class.

4. ACCORDING TO THE APPLICATION AREAS

a) Standard Polymers:
Standard polymers are used in the non-structural components. They are useful in a wide range of relatively low-cost production,they have the softness properties and have a large sales. Some raw material suppliers Fiberglas, etc. are based on application requirements, such as improving the material properties by the addition of additives. However, they can not be regarded as engineering polymers.

b) Engineering Polymers:
Engineering polymers are used in structural parts. These are very good mechanical, electrical and chemical properties that they have. Flame or not, durability, workability and so on. like. Because of these properties in an area of wide variations in temperature thermoplastics and durable long lasting. In addition,they have stressful and exhausting conditions have a very long lifetime. Nylon, PC, POM.PBT,PET are the manufacturing different kinds of engineering plastics and prices are high and less than in manufacturing varieties.