Ultra-high molecular weight polyethylene sheet

Characteristics of Ultra-High Molecular Weight Polyethylene Sheet

1. Thermal Properties. According to the ASTM (load 4.6kg/cm²) method, the heat deflection temperature is 85°C. Under smaller loads, the service temperature can reach 90°C. In special cases, it is allowed to be used at even higher temperatures. Since ultra-high molecular weight polyethylene is an extremely tough material, its low-temperature resistance is also excellent. At a low temperature of -269°C, it still exhibits certain ductility without signs of brittle fracture.

2. Electrical Properties. Ultra-high molecular weight polyethylene has excellent electrical properties over a wide temperature range. Its volume resistivity reaches 10¹⁸ Ω·cm, breakdown voltage reaches 50 KV/mm, and dielectric constant is 2.3. Over a broad range of temperatures and frequencies, its electrical properties change very little. Within its heat resistance range, it is highly suitable for use as structural material in electrical engineering and material in paper mills.

3. Non-Toxicity. Ultra-high molecular weight polyethylene is odorless, non-toxic, and tasteless. It is non-corrosive and possesses physiological inertness and biocompatibility. The U.S. Food and Drug Administration (FDA) and the U.S. Department of Agriculture (USDA) permit its use in applications involving contact with food and pharmaceuticals.