Alloy antiseptic composite coating for coal mine underground gas pipe

A composite coating and anti-corrosion coating technology, applied in anti-corrosion coatings, pipeline anti-corrosion/rust protection, coatings, etc., can solve the problem that the corrosion resistance cannot meet the anti-corrosion requirements of gas drainage pipes, and the impact resistance of polymer plastics is not good. High cost, easy to fall off and other problems, to achieve the effect of high cost performance, excellent flame retardant performance, and excellent comprehensive performance

Active Publication Date: 2011-09-14
ANHUI HAICHENG RAILWAY EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These documents report the anticorrosion technology of steel pipes used in coal mines, but the polymer plastics of steel-plastic composite pipes have low impact resistance, and they are easy to fall off after being impacted during transportation and installation engineering, while the single anticorrosion coatings such as epoxy and aliphatic polyurea are resistant to corrosion. Corrosion performance often cannot meet the anticorrosion requirements of gas drainage pipes

Method used

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  • Alloy antiseptic composite coating for coal mine underground gas pipe
  • Alloy antiseptic composite coating for coal mine underground gas pipe
  • Alloy antiseptic composite coating for coal mine underground gas pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 100g of aluminum flakes, 5g of zinc flakes, 10g of polyoxyethylene octylphenol ether, and 1g of carboxymethyl cellulose were uniformly mixed to obtain paste A; 5g of chromic anhydride was dissolved in 80g of deionized water to obtain solution B. After mixing components A and B at a mass ratio of 1:1.5, stir and disperse evenly, spray on the surface of the base pipe, and sinter at 300°C for 45 minutes to form an aluminum-zinc-chromium coating I on the surface of the base pipe.

[0036] 100g brominated epoxy resin, 40g conductive carbon black, 3g triphenyl phosphate, 80g low molecular polyamide resin, 150g toluene, 150g isopropanol, 150g kerosene were stirred and dispersed evenly, sprayed on the surface of aluminum zinc chromium coating I, the surface After drying, it is sintered at 170°C for 45 minutes to form a flame-retardant, anti-static and anti-corrosion coating II on the surface of the aluminum-zinc-chromium coating I to obtain an alloy anti-corrosion composite coat...

Embodiment 2

[0038] 100g of aluminum flakes, 10g of zinc flakes, 20g of polyethylene glycol alkylphenol polyoxyethylene ether, and 2g of carboxymethyl cellulose were uniformly mixed to obtain paste A; 5g of chromic anhydride was dissolved in 70g of deionized water to obtain solution B. After mixing components A and B at a mass ratio of 1:1.5, stir and disperse evenly, spray on the surface of the base pipe, and sinter at 350°C for 30 minutes to form an aluminum-zinc-chromium coating I on the surface of the base pipe.

[0039] 100g brominated epoxy resin, 40g graphite, 3g antimony trioxide, 100g low-molecular polyamide resin, 100g benzene, 150g isopropanol, 200g kerosene, stir and disperse evenly, spray on the surface of aluminum-zinc-chromium coating I, after the surface is dry Sintering at 180°C for 30 minutes forms a flame-retardant, antistatic, anti-corrosion coating II on the surface of the Al-Zn-Cr coating I, and obtains an alloy anti-corrosion composite coating for underground gas pipe...

Embodiment 3

[0041] 100g of aluminum flakes, 20g of zinc flakes, 30g of lauryl polyoxyethylene ether, and 1g of sodium polyacrylate were uniformly mixed to obtain paste A; 10g of chromic anhydride was dissolved in 80g of deionized water to obtain solution B. After mixing components A and B at a mass ratio of 1:1.5, stir and disperse evenly, spray on the surface of the base pipe, and sinter at 330°C for 35 minutes to form an aluminum-zinc-chromium coating I on the surface of the base pipe.

[0042] 100g brominated epoxy resin, 30g Fe 3 o 4 , 5g antimony trioxide, 60g low-molecular polyamide resin, 20g tung oil anhydride, 100g benzene, 150g isopropanol, 200g acetone, stir and disperse evenly, spray on the surface of aluminum-zinc-chromium coating I, sinter at 170°C for 40min after surface drying, A flame-retardant, antistatic and anti-corrosion coating II is formed on the surface of the aluminum-zinc-chromium coating I to obtain an alloy anti-corrosion composite coating for underground gas ...

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Abstract

The invention discloses an alloy antiseptic composite coating for a coal mine underground gas pipe. The coating is formed by compounding an aluminum, zinc and chromium coating which is formed by sintering a coating sprayed onto a pipe wall at the temperature of between 300 and 350 DEG C, and a flame retardant antistatic antiseptic coating II which is formed by sintering a coating which is sprayedonto the coating II at the temperature of between 160 and 180 DEG C. The hardness of the alloy antiseptic composite coating is more than or equal to 2H; the impact intensity is more than or equal to 50kg.cm; the coating adhesion is more than or equal to a level 3; neutral salt spray resistance is more than 500h; the indexes of the flam resistance are that: the arithmetic mean value of the flame combustion time of six test pieces is less than or equal to 3s, the arithmetic mean value of the flame combustion time of one test piece is less than or equal to 8s; and the arithmetic mean value of the spark combustion time of six test pieces is 0s and the unit value of the spark combustion time of one test piece is 0s; and the index of conductivity performance is that: surface resistance is less than or equal to 1*10<6>Omega.

Description

1. Technical field [0001] The invention relates to a pipeline anticorrosion coating, in particular to an alloy anticorrosion composite coating for underground gas pipes in coal mines. 2. Background technology [0002] Methane gas is one of the main factors that endanger the safety of coal mine production, and the drainage of gas gas in coal mine production is very important. At present, gas drainage pipes in coal mines are divided into non-metallic pipes and steel pipes. Non-metallic pipes mainly include glass steel pipes, polyvinyl chloride (PVC) pipes, and polyethylene (PE) pipes. FRP pipes have disadvantages such as high brittleness and poor impact resistance, while polyvinyl chloride (PVC) pipes and polyethylene (PE) pipes are not strong in pressure bearing and have poor aging resistance. Therefore, at present, most of the gas drainage pipes in coal mines are made of steel pipes. However, the underground air in coal mines is humid, there are flammable and violent dust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D163/00C09D5/10C09D7/12F16L58/04
Inventor 王华林王继植谭育远谭麟
Owner ANHUI HAICHENG RAILWAY EQUIP TECH
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