China Plastics ›› 2022, Vol. 36 ›› Issue (12): 57-64.DOI: 10.19491/j.issn.1001-9278.2022.12.009

• Materials and Properties • Previous Articles     Next Articles

Structures and properties of PP⁃RCT tube materials with high⁃pressure level

ZHEN Jian(), GAO Zhiwu   

  1. Beijing Yanshan Petrochemical High?Tech Company Limited,Beijing 102500,China
  • Received:2022-08-16 Online:2022-12-26 Published:2022-12-20

Abstract:

The properties and existing problems of random copolymerization polypropylene pipe materials were briefly introduced, and the development of new technologies and products at home and abroad were discussed. Taking two representative PP⁃RCT tube materials as a research object, the structures and properties of the specific tube materials were analyzed and characterized by means of nuclear magnetic resonance carbon spectroscopy, gel permeation chromatography, differential scanning calorimetry, wide angle X⁃ray diffractometer, and rheometer. The results indicated that the two special materials presented different molecular structures, aggregation characteristics, rheological behaviors, and physical properties. This study offers a significant reference for the domestic development of PP⁃RCT tube materials with a high pressure⁃resistance grade.

Key words: random copolymer polypropylene, molecular structure, aggregate state structure, pressure resistance, resistance to creep

CLC Number: