The Royal DSM Group of the Netherlands has developed a new type of hydrolytic-resistant PBT that will add new products to the Arnite® thermoplastic polyester family. The new materials will provide a cost-effective solution for high temperature and humidity applications, including automotive connectors, control equipment and sensors .
High temperature and humidity
Mark Terlaak, DSM Global Markets Manager, said: "We learned from our customers that materials such as polyamide 6, polyamide 66 and standard PBT are no longer suitable for specific applications with continuous use and continuous increase in peak engine temperature At all levels of suppliers, hydrolysis resistant PBTs are viewed as a transitional material that switches from these materials to more expensive specialty material solutions.
No need to use heat stabilizers
Terlaak also notes that PBT outperforms standard polyamides used in automotive electronics applications because it eliminates the need for heat stabilizers (some can cause metal contact corrosion problems) and because of its low hygroscopicity Higher dimensional stability.
The new Arnite hydrolyzable PBT products outperform other PBTs in many respects, but the most significant advantages are that in the USCAR Standard Type 3, 4, 5 Temperature / Humidity Environment and the Dual 85 Humidification Cycle Test (85 ° C and 85% Relative Humidity) with good retention of mechanical properties for up to 3000 hours Terlaak notes that the product has excellent properties at 150 ° C. He added: 'Our products are excellent in terms of flow and crystallization speed Nearly all of its kind products save cycle times and maintain good mechanical properties throughout their life cycle. '
DSM not only considers the needs of the automotive industry today but also considers how the product will evolve in the future in response to changes in the automotive industry as it sets the target performance of the hydrolytic-resistant PBT series.With electric vehicles and autonomous driving The growing trend of the car, the new product will face higher strength testing and verification standards.
DSM now offers two 30% glass-reinforced new Arnite Hydrolysis-resistant PBT products, one of which enhances the silicone tackiness and will be complemented by a portfolio that will include various grades of glass-fiber reinforced products, thickness Flame retardant products up to V0 at 0.4 mm UL 94, impact modified products, and products designed to improve the adhesion of silicone sealants.