BASF further developed the company's hydrolysis-resistant thermoplastic polyester series to meet the automotive industry's need for highly efficient sensors.
The Ultradur HR (HR is hydrolysis resistant) range of products includes the Ultradur B4330 G6 HR High Speed series for a particularly flowable and laser markable grade with 30% glass fiber reinforcement; Ultradur B4330 G10 HR, 50% Highly reinforced grade of fiberglass; a new generation of Ultradur B4331 G6 HR with optimized processing characteristics. The Ultradur B4331 G6 HR series is now available in a colorless grade, black laser marking, and is also used in parts for electric vehicles. Orange laser marking.
With its Ultradur HR products, BASF offers high-tolerance PBT materials (PBT is polybutylene terephthalate), which are particularly suitable for use in challenging environments. Therefore, they make the life of automotive parts longer. Higher operational reliability. Compared to alkaline media that cause stress corrosion cracking, the HR grade also has considerable resistance to alkaline media.
Ultradur B4331 G6 HR grade improves melt stability and flow. Ultradur B4331 G6 HR does not exhibit an increase in viscosity during prolonged high temperature testing, providing the best basis for stable and convenient processing. Orange (RAL 2003) for high-voltage socket connectors for electric vehicles. Due to the high resistance to tracking of PBT materials, the socket connector can be designed to be smaller while still being able to withstand the high voltage of electric vehicles. Reduced cost and component weight.
The 30% glass fiber reinforced Ultradur 4330 G6 HR is available, extending the Ultradur B4330 G6 HR High Speed bk15045, which includes a particularly flowable and laser-marked. This grade helps to create thin-walled parts with high flow path and wall thickness ratios.
The new Ultradur B4330 G10 HR contains 50% glass fiber. Therefore, it can be processed to expose to moisture and high temperature components to maintain a certain high stiffness (160 ° C, up to 180 ° C in the short term), For example, in the control module of the charging air duct. The temperature range is from 140 ° C to 180 ° C, the material can reach the property level of polyphenylene sulfide (PPS), usually used in such applications.
For selected automotive applications, BASF has developed the Ultradur B4450 G5 HR. This PBT is reinforced with 25% glass fiber, is ROHS and flame retardant reinforced, and can be printed in light and laser. According to the VDA 278 emission test, it is atomized. Low value, suitable for automotive interiors, also suitable for controlling switch housings. New materials have resistance to hydrolysis, flame retardancy, high tracking resistance and low smoke density, and also address the considerable safety requirements and requirements of electric vehicles. Traditional cars have much higher currents.
Since its launch, BASF has developed more than a dozen HR-modified Ultradur grades, of which 15%, 30% and 50% are fiberglass reinforced, especially flowable, laserable, laser transparent or flame retardant. Typical applications can be found in automotive electronics, for example, control units, connectors, sensor housings, and charging plugs, battery pack housings or connectors in high-voltage circuits for electric vehicles.