What is engineering plastic?

Engineering plastic is a type of plastic with outstanding mechanical, physical and chemical properties, specially designed for use in industrial applications that require high durability, strength, heat resistance and chemical resistance. Unlike conventional plastics that are mainly used in daily life, engineering plastics are often used to partially replace metal materials in the production of machinery, mechanical equipment, automotive components, electrical - electronic and many other high-tech fields.

Thanks to their abrasion resistance, dimensional stability, ease of processing and lighter weight than metal, engineering plastics are increasingly favored by businesses to optimize costs, reduce equipment weight and increase operating life.

Why are engineering plastics increasingly popular in modern industrial production?

In the era of industry 4.0, engineering plastics are gradually replacing many traditional materials thanks to a series of outstanding advantages. With good bearing capacity, abrasion resistance, high heat resistance and dimensional stability, engineering plastics help increase product durability while reducing weight and production costs. In addition, this material is easy to process, suitable for many modern forming technologies such as injection molding, extrusion, CNC... Thanks to its flexibility and high performance, engineering plastics are widely used in industries such as mechanics, electricity - electronics, automobiles, medical equipment and high-end consumer goods.

Classification of main engineering plastic groups

1. High-performance plastic group

Engineering plastics are advanced polymer materials, designed to meet the strict requirements of modern production. In particular, the group of high performance plastics (High Performance Plastics) plays a particularly important role when it is necessary to replace metals or operate in environments with harsh temperatures, pressures and chemicals. Some typical high performance engineering plastics

• PEEK (Polyetheretherketone)

PEEK can withstand temperatures up to 260°C for many hours, and even 310°C for a short time. This type of plastic has high hardness, abrasion resistance, chemical resistance, UV resistance and excellent fire resistance.

• PTFE (Polytetrafluoroethylene)

Has extremely low friction resistance, good insulation and anti-stick properties. Widely used in chemical environments and the electronics industry.

2. Flexible plastic group

• MC plastic (Cast Nylon)

Produced from the polymerization reaction of Monomer lactam, has high mechanical strength, good abrasion resistance.

• PC plastic (Polycarbonate)

Good impact resistance, transparent, good insulation, easy to process.

Applications: Safety helmets, cabin glass, skylights, car lights, CD/DVD discs.

• PU plastic (Polyurethane)

Flexible like rubber but hard and durable like metal, resistant to abrasion and strong impact.

Applications: Rollers, wheels, shock absorbers in machinery and equipment.

• PA plastic (Polyamide/Nylon)

High hardness, durable, abrasion resistant, good low temperature resistance, easy to shape.

Applications: Fan blades, car electrical parts, air conditioner valves, machine housings.

• POM (Polyacetal) Plastic

Has low coefficient of friction, high hardness, excellent wear resistance, stable operation in humid environment.

Application: Gears, bearings, guide parts, electronic components.

3. Low-temperature plastic group

Engineering plastics not only include high-temperature resistant types but also have an important group that specializes in operating well in low to medium temperature conditions - that is the low-temperature engineering plastic group, typically polyolefins such as HDPE, PP, PE, PET, PMP...

These are popular thermoplastics that can operate stably at temperatures up to 100°C, possessing the characteristics of lightness, easy shaping, low cost and good chemical resistance. Thanks to that, they are widely used in the food, medical, construction, light mechanical and consumer product industries. Some popular low-temperature engineering plastics and practical applications

• PP (Polypropylene) plastic

Lightweight, chemical resistant, heat resistant and safe for food.

Applications: Food packaging, household electrical appliances, auto parts, medical equipment, suitcase covers, plastic bags, outdoor furniture.

• PET (Polyethylene Terephthalate)

Transparent, impact resistant, moisture resistant, easy to recycle.

Applications: Plastic bottles, cosmetic boxes, food packaging, safety belts, light mechanical parts.

• HDPE & PE (High-Density Polyethylene & Polyethylene)

Durable, impact resistant, moisture resistant and resistant to mild chemicals.

Applications: Water pipes, plastic cans, household items, industrial packaging, insulation panels.

Outstanding features of engineering plastic groups

1. Outstanding features of high-performance plastics

High-performance engineering plastics have the ability to maintain mechanical stability even when the ambient temperature increases suddenly. Some types such as PEEK, PTFE, PPS, PSU can withstand long-term heat from 160°C to 260°C, or even higher in a short time. At the same time, they have the ability to resist corrosion, chemical resistance, good insulation, dimensional stability, anti-friction and effective fire resistance.Advantages of high-performance engineering plastics

- Outstanding heat resistance: Stable operation under high temperature conditions.

- Good chemical resistance: Not affected by solvents, acids, strong alkalis.

- High mechanical strength: Hard, strong and not easily deformed.

- Light weight: Reduces the load on equipment, effectively replaces metal.

- Excellent insulation: Suitable for the electrical and electronic industry.

Disadvantages of high-performance plastics

- High cost: Compared to conventional plastics and some other materials.

- Processing requires high technology: Due to special properties, specialized machinery and production processes are required.

2. Characteristics of engineering plastics in the flexible plastic group

- High flexibility and durability, easy to shape and process.

- Good strength, mechanical stability under continuous operating conditions.

- Chemical resistance, abrasion resistance, impact resistance.

- Can be mixed or reinforced to optimize for each application.

Thanks to the diversity of properties and high customizability, the flexible engineering plastic group is widely used in mechanics, automobiles, electricity - electronics, household appliances, food industry and construction.

Advantages of engineering plastics in the flexible plastic group- Reasonable cost, effective replacement for many metal parts.

- Low coefficient of friction, suitable for moving parts such as gears, bearings.

- Good chemical and heat resistance, suitable for industrial environments.

- Easy to process, injection mold, extrude or shape according to production requirements.

Disadvantages of engineering plastics in the flexible plastic group
- Cannot withstand extremely high temperatures like the high-performance plastic group.

- Some types are easily deformed if not processed or mixed properly.

3. Outstanding features of low-temperature engineering plastics

- Low cost, suitable for mass or large-scale applications.

- Safe for food, non-irritating, odorless.

- Easy to recycle, environmentally friendly (especially PET plastic).

- High flexibility, can be applied from packaging to technical components.

Disadvantages of low-temperature engineering plastics

- Not suitable for high temperature environments (>100°C).

- Lower load-bearing capacity and hardness than high-performance plastics.

- Some types are easily deformed if exposed to UV rays for a long time without protective additives.

1. Practical applications of high-performance plastics

- Interior construction, advertising, construction: Making waterproof and anti-static lining and partitions.

- Electronics industry: Making high-tech circuit boards, insulating electrical components.

- Mechanical engineering - machine manufacturing: Used for machine parts that need to be heat-resistant and wear-resistant.

- Textile - fashion: Used as molds in production.

2. Practical applications of flexible engineering plastics

- Mechanical and machine manufacturing industry: Processing moving parts, bearings, gears.

- Automobile and motorbike industry: Production of interior components, machine parts, control parts.

- Electricity and electronics: Making equipment shells, circuit boards, insulating components.

- Medical and food industry: Processing tools, packaging equipment, trays.

- Construction and interior: Skylight roofing materials, partitions, anti-static equipment.

3. Practical applications of low-temperature engineering plastics

- Packaging and food industry: Production of containers, plastic bags, safe PET bottles.

- Medical and pharmaceutical industry: Medical instruments, medicine boxes, sterile packaging.

- Electricity and electronics industry: Insulating shells, household appliances.

- Construction and interior industry: Roofing panels, pipes, outdoor household appliances.

- Consumer industry: Suitcases, storage boxes, household items.

In short, engineering plastics are not only an effective substitute for metals in many industries but also bring outstanding value thanks to their durable mechanical properties, heat resistance, chemical resistance and ease of processing. Intech Group is one of the units that process high-quality POM plastic parts at reasonable prices. We can produce machine components, precisely process industrial products, medical equipment, etc. to meet the strict requirements of customers.