Research on the Performance of Sealing Materials for Low-Temperature Valve Insulation Layers

As a country with high energy consumption, Chinese demand for clean has been increasing due to the gradual improvement of economy and living standards its citizens. Natural gas is one most widely used sources, vigorously promoted use alleviate environmental issues. result, China invested heavily in construction LNG receiving terminals plants coastal areas. This led rapid development industry placed demands on safety efficiency LNG-related cryogenic equipment. Due extremely low temperature LNG, it necessary consider heat loss intrusion design In this study, high-density polyethylene was chosen as low-temperature sealing material aim controlling reducing intrusion. Compression, compression rebound, hardness tests were conducted at temperatures 25°C, -29°C, -50°C, -110°C, -162°C, -180°C. The maximum stress values, compressibility, resilience, different analyzed.