What is the differences between general plastics, engineering plastics and special plastics?

The differences and connections between general plastics, engineering plastics and special plastics:

General plastic:

Definition: Plastic with large output, wide range of uses, good formability and low price.

Types: Mainly include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene-styrene copolymer (ABS).

Application: Widely used in containers, packaging materials, automobile interiors, etc. in daily life.

www.polyhdpe.com/products/polypropylene-hp500n.html

Engineering plastics:

Definition: Plastics with excellent performance, able to withstand certain external forces and high mechanical strength, suitable for use as engineering materials or structural materials.

Types: including polyamide (PA), polymethacrylate (PMMA), polyoxymethylene (POM), polyurethane (PU) and polycarbonate (PC), etc.

Application: Mainly used in automobile manufacturing, electronic appliances, building materials, office equipment, etc. Because of its good mechanical properties and durability, it is often used to manufacture structural and functional parts.

www.polyhdpe.com/products/pom-polyoxymethylene-yuntianhua-m90.html

Specialty plastics:

Definition: Plastics with special functions that can meet special use requirements, such as medical plastics, conductive plastics, etc.

Types: including polyphenylene sulfide (PPS), polyimide (PI), polysulfone (PSF), polyetherketone (PEK) and liquid crystal polymer (LCP), etc.

Application: Used to meet specific high-performance requirements, such as aerospace, medical equipment, high-tech electronics and other fields.

The connection between the three plastics:

1. The three are different in chemical structure, but they are all based on synthetic resins or chemically modified natural polymers. Their properties can be improved by adding fillers, plasticizers and other additives to meet different usage needs.

2. In industrial applications, all three can be modified to improve their performance, such as reinforced plastics and foam plastics.

To sum up, general plastics, engineering plastics and special plastics are different in performance, use and production cost, but they are all important parts of the plastics industry and each play a key role in different fields.