Blow Moldable TPV Withstands High Heat

A new blow moldable TPV for automotive boots, bellows, and ducts withstands temperatures up to 175 C (347 F) while retaining softness and flexibility.

A new blow moldable TPV for automotive boots, bellows, and ducts withstands temperatures up to 175 C (347 F) while retaining softness and flexibility. Zeotherm 120-90B from Zeon Chemicals. Louisville, Ky., eliminates the need for heat shields and avoids the use of more costly silicone or ethylene-acrylic rubber boots. Zeotherm is based on Zeon’s polyacrylate rubber in a nylon matrix. It has a hardness of 90 Shore A. Testing reportedly shows that boots molded of Zeotherm 120-90B survive higher speed rotation and higher temperatures than copolyester TPEs. In addition, the material has better resistance to aggressive greases than HTR-series copolyester. Versus EPDM/PP TPVs, the material has better heat resistance and superior grease resistance. It has been adapted for use on a wide range of blow molding equipment used for automotive boot and air duct production.