PBT Resins: Advantages and Applications Explained

Polybutylene terephthalate or PBT is becoming an increasingly popular commercial polyester across industries. They are used as an insulator in the electrical and electronics industries owing to their beneficial features. Being a part of the polyester group of resins, PBT shares characteristics with other thermoplastic polyesters. PBT is a high-performance material with a high molecular weight, and it is often characterized as stiff, strong, easily engineered, and flexible plastic. It has many attractive properties, including great abrasion and heat resistance, excellent chemical resistance and dimensional stability, and more. Would you like to know more about them? Read the post till the end.

Know Why PBT Resins Are So Popular

PBT is a semi-aromatic thermoplastic that can be molded and thermoformed easily. One major advantage of PBT is that it has good electrical resistance due to its fast crystallization. The material has an excellent melting point at approximately 225 degree Celsius and heat resistance up to 150 degrees Celsius. Additionally, its excellent thermal and mechanical properties allowing it to withstand extreme temperatures. These benefits make PBT resins popular across several industries. Some notable advantages of PBT resins include:

  • Great stiffness-to-weight ratio
  • Great electrical insulation properties
  • Resistance to environmental changes
  • Better impact resistance than PET 
  • Superior dimensional stability
  • Excellent stain resistance
  • Great machining characteristics
  • High strength and toughness
  • Excellent machining characteristics
  • Blocks UV radiation
  • Good variety of grades available

Applications of PBT Resins

PBT is common in everyday life and is most widely used in electronics, electrical, and automotive components. PBT compound and PBT resins are two different types of products that find a variety of applications. PBT resins comprise only the base resin, while a PBT compound includes materials like fiberglass and additives as well. The material is most commonly used in glass-filled grades. For outdoor use, additives are used to improve its flammability and UV properties.

Polybutylene terephthalate is used to make electrical and electronic parts, automotive constructions such as connectors, and so on. It is also found in TV set accessories, motor brushes, motor covers, false eyelashes, toothbrushes, high-end computer keyboards, and more. When PBT is reinforced, it can be used in sockets, bobbins, handles, and switches.

Owing to its chlorine-resistant property, it is commonly found in swimwear and sportswear. When excellent strength, great dimensional stability is required, PBT is a preferred option. Owing to this reason, several food processing machinery components, gears, wheels are made using PBT. It is widely used in food processing components owing to its resistance to staining and low moisture absorption property.

Are you interested in PBT resins for your upcoming commercial or industrial applications? If yes, then make sure you source them from reliable, industry-leading suppliers like MidContinent Plastics. With years of market presence and highly-experienced experts, they help you in the selection of the right PBT resins for your applications.

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