PPR (polypropylene randon coplymer) pipe material with excellent low-temperature toughness and preparation method thereof

Abstract

The invention relates to a PPR (polypropylene randon coplymer) pipe material with excellent low-temperature toughness. The PPR pipe material is prepared from the following raw materials in parts by mass: 100 parts of polypropylene randon coplymer, 0.1 to 5 parts of coupling agent, 1 to 20 parts of toughening agent, 1 to 20 parts of crystal whisker loaded beta nucleating agent, 0.1 to 3 parts of antioxygen, and 0.1 to 5 parts of color master batch. The PPR pipe material provided by the invention has excellent low-temperature toughness, and has better rigidity, strength and pressure resistance at the same time; according to the PPR pipe material with the excellent low-temperature toughness provided by the invention, the reliability in transporting and applying the pipe material in a low-temperature environment is improved.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a PPR pipe with excellent low-temperature toughness and a preparation method thereof. Background technique [0002] Random copolymerized polypropylene (PPR) pipes are the third generation of modified PP pipes developed in Europe in the early 1990s. PPR is based on random copolymerized polypropylene, which contains about 3% ethylene. PPR pipes are increasingly favored by people for their many advantages such as no rust, no leakage, no scaling, heat resistance, pressure resistance, and the same lifespan as buildings. However, PPR pipes are subject to low-temperature embrittlement, and in low-temperature environments, PPR pipes are easily damaged during transportation, which greatly restricts the use of PPR pipes in alpine regions. [0003] Elastomer has high elasticity, and its glass transition temperature is very low, which can significantly improve the low-temperature brittleness...

AI Technical Summary

Problems solved by technology

However, from the perspective of practical application, the β crystal content of polypropylene cannot meet expectations, and the low-temperature toughness of PPR pipes cannot be effectively improved.