Polyurea elastic body pipeline anti-rot protection material

A polyurea elastomer and protective material technology, applied in pipeline anti-corrosion/anti-rust protection, pipeline protection, polyurea/polyurethane coatings, etc., can solve problems such as unreasonable configuration of raw materials, high requirements for production equipment, infiltration of corrosive media, etc. Achieve excellent physical and chemical properties, convenient construction and good adhesion.

Inactive Publication Date: 2007-09-12
山东斯泰普力高新建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Raw material name

[0022] Its processing and production process is to pour all the materials into the dispersion tank according to the proportion (remove the color paste part), use the disperser to disperse the materials evenly, add the color paste and continue to disperse until uniform, then it can be discharged and packaged. The materials prepared in the above examples have excellent construction performance when used in pipeline joints. Generally, the straight pipe part is prefabricated in the factory, and the interface is sprayed and connected on site. The pipeline treated with polyurea can maintain good continuity and integrity, and the entire pipeline system is completely sealed and seamless, ensuring the overall anti-corrosion function and long life of the pipeline. The measured technical parameters are: solid content 100%, gel time 15 seconds, tensile strength 25MPa, elongation at break 48%, tear strength 90KN / m, hardness, Shore D60-75, adhesion 12M...

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PUM

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/02C09D175/02C08K5/524F16L58/02C08K3/36
Inventor 钟涛
Owner 山东斯泰普力高新建材有限公司
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