What is PC+PBT Material

VALOX™ 553 is a composite material of polycarbonate (PC) and polybutylene terephthalate (PBT). Its 30% glass fiber reinforcement and flame retardant system combine to achieve a stable balance of strength, heat resistance, and flame retardancy. This PC+PBT material boasts a UL 94 V-0/5VA flame retardancy rating and excellent outdoor weathering, maintaining stable structural and electrical properties even after long-term exposure to sunlight, moisture, and temperature fluctuations.

01 | Highlights and features

High mechanical strength: The glass fiber reinforced structure significantly enhances the flexural modulus and tensile strength, making it suitable for components subjected to structural stress.

Outstanding flame retardant performance: It can reach 5VA grade at a thickness of 2.3mm and above, meeting the requirements of electrical and electronic applications with high safety standards.

Chemical resistance and weather resistance: Resistant to corrosion by various chemical media, maintaining performance without decline under outdoor exposure conditions.

Excellent dimensional stability: Extremely low shrinkage rate ensures the dimensional accuracy of precision parts after processing.

Outstanding electrical insulation: High insulation strength and arc resistance, suitable for high-voltage and sensitive circuit environments.

02 | Application field

VALOX™ 553 is widely used in:

  ・Electric Motors: Suitable for manufacturing components such as stators and housings, providing both insulation and structural strength.

  ・Pump Housings: Chemical resistance ensures protection against corrosion when pumping corrosive media.

  ・Appliance Handles: Sturdy, heat-resistant, and flame-retardant, enhancing user safety.

  ・Spotlight Housings: Heat- and UV-resistant properties ensure long-lasting use both indoors and outdoors.

03 | Processing suggestions

VALOX™ 553 is suitable for injection molding, and the glass fiber reinforced structure maintains good fluidity during processing.

  ・Temperature control: The temperatures of the barrel and the mold must be strictly set to prevent stress concentration and surface defects.

  ・Mold material selection: It is recommended to use wear-resistant steel and perform fine polishing to reduce the wear of glass fibers.

  ・Drying treatment: Keep the raw materials fully dry before molding to avoid bubbles or surface problems caused by water vapor.

04 | PC+PBT Material VALOX™ 553 Data Sheet

Looking for the full datasheet? Contact us for more technical information.

05 | Industry competitive advantage

Compared with the common PC+PBT formula, the advantages of model 553 lie in:

  ・It still maintains high strength at a high flame retardant grade, which is difficult to achieve simultaneously in most materials.

  ・It has passed UL f1 outdoor certification and can adapt to long-term outdoor exposure.

  ・It has stable electrical performance and is suitable for applications with strict safety requirements.

06 | User feedback

Some long-term cooperative customers have reported that in high-temperature environments such as engine compartments and power distribution systems, VALOX™ 553 can maintain structural integrity and flame retardant performance after years of use, reducing the replacement costs caused by component aging.

07 | FAQ Frequently Asked Questions

Q1: Is it suitable for outdoor use?
A: Yes, the material has passed the UL f1 outdoor application certification and can resist ultraviolet rays and climate influences for a long time.

Q2: How is the flame retardancy of this pc pbt material under thin-walled conditions?
A: Even at a thickness of 0.86mm, it can reach the UL 94 V-0 grade, and when the thickness is greater, it can reach the 5VA standard.

Q3: Is special equipment required for processing?
A: A conventional injection molding machine will do, but it is recommended to use wear-resistant molds and ensure that the raw materials are dry.

08 | Similar recommendation: VALOX™ 553U

09 | Juyuan's advantages in foreign trade

Multi-channel procurement: We offer high-quality PC+PBT materials from various origins.

Technical consultation: Provide customers with suggestions on material selection and processing plans.

Flexible supply: Meeting different demands from small-scale trial production to large-scale mass production.

Quality Assurance: Ensure that every batch of raw materials passes quality inspection.

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