High Hydrolysis Resistance PA from Safic-Alcan

Ethylene glycol is used as the cooling water which provides the removal of heat from the environment in applications such as radiator end tanks, cooling pipes, oil filters, throttle caps and expansion tanks. The most crucial parameter to consider when selecting the materials used in these critical components is the component aging in the presence of ethylene glycol at temperatures between 120-140oC. Thus, the proper material selection is the most essential requirement for cooling system applications.

Polyamide-based engineering plastics are widely preferred in under-hood applications across the automotive industry for their high heat and hydrolysis resistance properties. The properties of these materials should be enhanced and improved for resistance by special formulations so that they meet the requirements of automotive specifications.

Eurotec offers a wide range of technical polyamide engineering plastics with advanced mechanical and thermal properties as intended for the automotive industry. PA66 30% glass fiber reinforced products are actively used in applications, such as radiator end tanks, cooling pipes, etc., thanks to their high hydrolysis resistance.

Eurotec continues to work by developing high performance materials and improving the properties of products in its portfolio in accordance with OEM specifications that require hydrolysis resistance at high temperatures for cooling system applications.

To analyze the hydrolysis performance of its products, Eurotec collaborates with a German independent testing laboratory which carries out hydrolysis resistance tests for many OEMs.
Together with a competitor product, Tecomid NA40 GR30 BK005 HY QH, (PA66, 30% glass fiber reinforced, hydrolysis stabilized, black) is subjected to aging tests using a 50% ethylene glycol–50% water mixture for 500 hours and 1,000 hours at 135ºC in accordance with TL 52 682.

As per TL 52 682, the 3-point flexural strength value should be 25 MPa or higher after 1,000 hours of hydrolysis aging test.

Tecomid NA40 GR30 BK005 HY QH has met these test criteria by delivering an outstanding performance against challenging test conditions for its excellent thermal and hydrolysis resistance.

It can be used safely in applications such as radiator tanks and cooling pipes.