TPE for rubber replacement in automotive molding

Having developed a material with properties attained in the past only by high-performance rubber compounds processed using time-consuming vulcanization, Kraiburg TPE (Waldkraiburg, Germany) presented Fakuma show attendees with a new generation of thermoplastic elastomers (TPE) called Hipex, formulated in collaboration with Lanxess Corp. (Pittsburgh, PA). Combining the ability to withstand temperatures up to 170°C and resistance to motor oil, fuels, greases, and coolants, Hipex can be used as a replacement for acrylic elastomer (ACM) or ethylene-acrylic elastomer (AEM). Hipex can be molded in 30- to 60-second cycle times, which differs from AEM compounds that only develop ultimate properties after vulcanization if they are seasoned at 175°C for 3 hours. And also unlike rubber compounds, almost 100% of all manufacturing rejects and wastes can be returned into the production process.

Trials for two-component injection molding using Hipex showed outstanding bonding properties, especially with rigid components made of polyacetate or with polyamide. And since the TPE is available in natural colors, it can be dyed, showing visual contrast between the two components. It is also an ideal replacement for rubber in auto applications since it is about 15% lighter.

Kraiburg TPE
www.kraiburgtpe.com

Lanxess Corp.
www.lanxess.com