A new wear-resistant and corrosion-resistant composite pipe and its preparation method

A composite pipeline and anti-corrosion technology, which is applied in the field of special pipelines in the pipeline transportation field, can solve problems affecting the continuous and stable operation of thermal power generation units, pipeline leakage, system instability, etc., to improve the anti-leakage ability, accurate Molding, the effect of ensuring long-life operation

Active Publication Date: 2020-05-05
LIAONING ZHUOYI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear and corrosion damage of desulfurization pipelines will lead to pipeline leakage and system instability, which will seriously affect the normal, continuous and stable operation of thermal power generating units, resulting in huge economic losses and serious environmental pollution

Method used

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  • A new wear-resistant and corrosion-resistant composite pipe and its preparation method
  • A new wear-resistant and corrosion-resistant composite pipe and its preparation method
  • A new wear-resistant and corrosion-resistant composite pipe and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 2 As shown, the production method of the wear-resistant and corrosion-resistant composite pipe in this embodiment includes the following steps:

[0027] (1) Select polyurethane foam with a mesh size of 0.5mm, and cut it into the required size according to the needs; mix thermosetting phenolic resin, micron-sized silicon carbide powder, granular curing agent (p-toluenesulfonic acid) and ethanol according to 100:135:12 : The weight ratio of 35 is mixed with resin slurry;

[0028] (2) Immerse the cut and shaped polyurethane foam into the resin slurry once, and mold it to shape. The thickness is reduced to 1 / 3 of the original (the required size after thinning), and then dipped in the coating slurry for two subsequent times, and it is cured. Preform;

[0029] (3) The method of modifying the solidified prefabricated body and undergoing high-temperature pyrolysis and reaction sintering (process parameters of high-temperature pyrolysis: argon gas protection at...

Embodiment 2

[0034] Such as image 3 As shown, the production method of the wear-resistant and corrosion-resistant composite pipe in this embodiment includes the following steps:

[0035] (1) Select polyurethane foam with a mesh size of 0.5mm, and cut it into the required size according to the needs; mix thermosetting phenolic resin, micron-sized silicon carbide powder, and liquid curing agent (NL curing agent matched with thermosetting phenolic resin) according to 100: The weight ratio of 230:15 is prepared into resin slurry;

[0036] (2) Immerse the cut and formed polyurethane foam into the resin slurry once, and mold it to form a shape, and then immerse the coating slurry through a subsequent oscillation, and make a prefabricated body after curing;

[0037] (3) The cured prefabricated body is repaired and subjected to high-temperature pyrolysis or reaction sintering (process parameters of high-temperature pyrolysis: argon gas protection atmosphere, heating rate is 2°C per minute, the t...

Embodiment 3

[0042] Such as Figure 4 As shown, the production method of the wear-resistant and corrosion-resistant composite pipe in this embodiment includes the following steps:

[0043] (1) Thermosetting phenolic resin, micron-sized silicon carbide powder, and liquid curing agent (NL curing agent matched with thermosetting phenolic resin) are prepared into resin slurry in a weight ratio of 100:230:15;

[0044] (2) Control the viscosity of the slurry, wait until the viscosity reaches 180cP, mold and shape, and make a prefabricated body after curing;

[0045] (3) The cured prefabricated body is repaired and subjected to high-temperature pyrolysis or reaction sintering (process parameters of high-temperature pyrolysis: argon gas protection atmosphere, heating rate is 2°C per minute, the temperature is raised to 1000°C, and the temperature is kept for 1 Hours; process parameters of reaction sintering: in a vacuum environment, the heating rate is 2°C per minute, the temperature is raised to...

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Abstract

The invention belongs to the field of special pipelines in the pipeline conveying field, and particularly relates to a novel wear-resistant and corrosion-resistant compound pipeline and a preparation method thereof. The compound pipeline comprises a wear-resistant and corrosion-resistant ceramic layer, a composite bonding layer and a carbon steel pipeline body in sequence from inside to outside. Firstly, phenolic resin, micron silicon carbide particles, curing agents and the like are uniformly mixed so as to prepare resin slurry; polyurethane foam soaked in the resin slurry is molded and formed so as to prepare a preform of the wear-resistant and corrosion-resistant ceramic layer through subsequent soaking; or the viscosity of the slurry is controlled, and the resin slurry is directly molded and formed so as to prepare the preform of the wear-resistant and corrosion-resistant ceramic layer; subsequently, a silicon carbide member of the required shape and size is prepared by adopting high-temperature pyrolysis and reactive sintering methods; and finally, the wear-resistant and corrosion-resistant ceramic layer is bonded with the carbon steel pipeline body by composite adhesives and is solidified and formed so as to prepare the wear-resistant and corrosion-resistant compound pipeline. Thus, the problems of wear and corrosion of conveying pipelines for industrial equipment and engineering machinery are solved, and the service life of the industrial equipment and the engineering machinery is prolonged.

Description

technical field [0001] The invention belongs to the field of special pipelines in the pipeline transportation field, and in particular relates to a novel wear-resistant and corrosion-resistant composite pipeline and a preparation method thereof. Background technique [0002] At present, the commonly used pipes in the desulfurization system of the thermal power industry include rubber-lined pipes, plastic-lined pipes, stainless steel pipes and ceramic sheet pipes. Due to the peeling off of rubber, plastic and ceramic sheets, the service life of elbows, heads and other parts in such pipelines is generally less than half a year. The wear and corrosion damage of desulfurization pipelines will lead to pipeline leakage and system instability, seriously affecting the normal, continuous and stable operation of thermal power generating units, causing huge economic losses and serious environmental pollution. Contents of the invention [0003] The object of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/14C04B35/565C04B35/622C04B35/634
CPCC04B35/565C04B35/622C04B35/63476C04B2235/5436C04B2235/656C04B2235/658F16L9/14
Inventor 张劲松杨振明全锋厚任志恒钱志强付超
Owner LIAONING ZHUOYI NEW MATERIAL
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