Polyurea elastic body pipeline anti-rot protection material

Abstract

This invention relates to a pipeline anti-corrosion protective material of polyurea elastomer. Its technical program is: A component is isocyanate, and B includes the weight components of following materials: 45-55% of amid-capped propylene oxide compound, 6-15% of diethyl toluenediamine, 5-7% of 2,4-diamido-3,5- methylthio chlorobenzene, 3-8% of DMS toluenediamine, 5-7% of N, N'-dialkyl diamine, 4-6% of N, N'- dialkyl methyl diamine, 2-5% of phosphite triester, 1-2% of fumed silica, 1-3% of organobentonites, 1-2% of silica. This invention advantages: fast setting, influence-free of temperature and humidity, strength, flexibility, high wear-resistance, anti-aging, anti-corrosion. It is particularly applicable to overhead and buried pipes, municipal sewage pipes, oil pipelines, gas pipelines and a variety of steel chemical storage tank.

Description

technical field [0001] The invention relates to the field of polymer anticorrosion chemical materials, in particular to a polyurea elastomer pipeline anticorrosion protection material. Background technique [0002] Traditional anti-corrosion materials are generally epoxy, chlorinated rubber, and glass fiber reinforced plastics. Among them, epoxy coatings include high solid powder coatings, water-based coatings, and powder coatings. The following shortcomings are common: ① Insufficient toughness, easy to crack under thermal stress or impact. ②The system contains organic solvents, which are harmful to the human body. ③Multiple processes must be adopted, the cycle is long, the efficiency is low, and the pinholes caused by solvent volatilization are easy to infiltrate the corrosive medium. Chinese Patent (Application No. 200510110358) "A Flame-Retardant Polyurea Anticorrosion Coating for Chemical Steel Structures and Its Manufacturing Process" discloses a new flame-retardant ...

AI Technical Summary

Problems solved by technology

The following disadvantages are common: ①Insufficient toughness, easy to crack under thermal stress or impact

②The system contains organic solvents, which are harmful to the human body

③Multiple processes must be adopted, the cycle is long, the efficiency is low, and the pinholes caused by solvent volatilization are easy to infiltrate the corrosive medium

However, there are mainly unreasonable raw material configurations, resulting in complicated material configurations, high requirements for production equipment, and complicated production processes, so it is difficult to be popularized and applied.