[Chemical Industry News] PA14D-2 polypropylene pipes pass heat stability test

Thread Content

This post was last edited by Xiao Gong 1985 on 2016-5-8 at 08:23. The PA14D-2 polypropylene pipe material produced by the second 300,000 tons per year polypropylene production unit at Daqing Refining and Chemical Company has recently passed an 8,760-hour heat stability test, thereby obtaining the approval needed to enter the market. 　　The two polypropylene production plants utilize an advanced gas-phase multi-zone circulating reactor technology, which enables the production of PPR pipe materials with a higher elastic modulus, greater impact resistance, and improved processability. However, the melt index of PA14D-2 tubing is very low, making production difficult. After carefully studying the process characteristics of the two sets of equipment, the technical staff made significant adjustments to key parameters such as the melt index, which affect product quality, and established scientific guidelines for major control parameters like the speed and temperature of the two extrusion granulation machines. Two months after the operation of the two sets of equipment began, PA14D-2 pipe material products were successfully produced.