Core Viewpoint - Zhonghua Quanzhou Petrochemical Co., Ltd. has successfully achieved large-scale production of a new generation of heat-resistant polyethylene pipe material using metallocene catalysts, which demonstrates excellent thermal stability and performance under harsh conditions [1] Group 1: Material Properties - The new material exhibits outstanding heat resistance and temperature stability, capable of long-term use at 70°C and 0.8 MPa [1] - It possesses excellent resistance to temperature fluctuations, maintaining stability in alternating hot and cold environments without cracking or deformation due to thermal stress [1] - The material also features good flexibility, chemical corrosion resistance, and low-temperature impact resistance [1] Group 2: Development Process - The research team addressed issues related to material softness and limited processing speed, which could only be increased to approximately 50 meters per minute [1] - During the development, precise control of the melt flow index was implemented to enhance the internal cohesion of the melt [1] - The formulation of additives was optimized to improve the processing performance of the product [1]