PREPERM™ thermoplastics are an excellent choice for mmWave radomes due to the​ low dielectric constant and ultra-low losses. Other benefits include high levels of isotropy, low water absorption, and excellent mechanical properties, even in arctic conditions Low and stable εr • Ultra-low loss • Low water absorption • Hydrolysis resistant • Excellent impact strength • Mass production friendly APPLICATION BULLETIN A PREPERM radome grade gives you a longer and wider scanning range compared to common resins. 40 m Comparison of PREPERM radome grade and common resin at 24 GHz and 79 GHz bands Common Resin Common Resin PREPERM™ RB260 PREPERM™ RB260 PARAMETER PBT+GF PEI PREPERM RADOME GRADE ELECTRICAL εr @ 77 GHz 3.5–4.2 3.1 2.6 Tan @ 77 GHz 0.03 0.003 0.003 Isotropic @ 77 GHz No Yes Yes MECHANICAL Impact strength -20°C/+23°C notched izod 6kJ/m2/6kJ/m2 6kJ/m2/6kJ/m2 25kJ/m2/35kJ/m2 Elongation @ break 3% 40% 22% Brittleness Yes Yes No THERMAL Max use temp (HDT) 200–220°C 190–200°C 150–180°C Inherent flammability HB V0 V1 to V0 ENVIRONMENTAL Water absorption 0.4% 1.25% 0.2% Chemical resistance Good Excellent Good Hydrolysis resistant Specific Grade Yes Yes MANUFACTURING Batch-to-batch consistency Limited Excellent Excellent Moldability Excellent Good Good Abrasive Yes No No Mold shrinkage Inconsistent, warpage issue Homogenous Homogenous Raw material price Low High Moderate Copyright © 2022, Avient Corporation.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

Excellent heat & flame resistance

Excellence

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

High-quality injection molded parts require extensive knowledge of the molding process, excellent trouble-shooting skills, careful attention to startup parameters, and consistent management of the process throughout the entire production run.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence.