点击 最 下方 关注《材料汇》 ， 点击"❤"和" "并分享 添加 小编微信 ，寻 志同道合 的你 正文 一、概述 茂金属聚乙烯（mPE）通常指在茂金属催化体系作用下，由乙烯均聚或乙烯与a-烯烃（如1-丁烯、1-己烯、1-辛烯）等共聚 得到的聚合物 ，是 最早实现工业化生产 的茂金属聚烯烃，也是 目前产量最大、应用进展最快 的茂金属聚合物产品。 由于茂金属催化剂的单活性中心特性，mPE具有较窄的分子量分布和更均匀的共聚单体分布，并且可以具备Z-N催化剂难 以实现的长支链结构，因此多种性能更加优异。 制备的薄膜具有透明性好、雾度低、起始热封温度低、耐穿刺性强以及减重明显等优势，可用于棚膜、热收缩膜、重包装 膜等；管材制品耐应力开裂性能优异、刚韧平衡性好，可用于地暖管等；气味小，特别适合用于瓶盖和食品包装膜等。此 外，在电线电缆、防水卷材、大型滚塑等应用领域，mPE综合性能都显著优于传统聚乙烯（PE）。 国外主要mPE生产企业包括 ExxonMobil、Dow化学、Borealis、Chevron Phillips、LyondellBasell、TotalEnergies、Inoes、三 井化学、宇部、住友化学、 ...

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]