A new type of anti-corrosion coating for water pipe elbows

A technology for anti-corrosion coatings and water pipes, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of easy corrosion leakage, long time, waste of manpower and material resources, etc., and achieve strong acid or alkali corrosion resistance, The formula is novel and reasonable, and it is not easy to corrode and leak.

Active Publication Date: 2018-08-31
RONGCHENG PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the sewage is domestic wastewater or production wastewater, its chemical properties are corrosive to a certain extent, turbulent flow usually occurs at the elbow, and the elbow is under great pressure, often structurally dredging or buffering the water flow, resulting in sewage and elbow The contact area of ​​the head is large, the time is long, it is easy to corrode and leak, and the elbow is replaced frequently, which not only causes waste of manpower and material resources, but also brings inconvenience to residents' lives
[0003] The anti-corrosion performance of the water pipe elbow is the biggest problem in improving its durability. There are many patents in the prior art that propose some anti-corrosion coatings. However, due to the limitation of the working environment of the water pipe elbow, long-term contact with sewage with acid or alkali , the anti-corrosion coating in the existing technology cannot meet the long-term anti-corrosion requirements

Method used

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  • A new type of anti-corrosion coating for water pipe elbows

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A new type of anti-corrosion coating for water pipe elbow, its preparation method is as follows:

[0032] (1) Organic material treatment

[0033] ① Put 32 parts by mass of isocyanate into the reaction kettle, stir at 170r / min, and gradually add 19 parts by mass of amino resin to obtain a reaction mixture;

[0034] ②The mixed reactant obtained in step (1)① is stirred at a rate of 200r / min, the reaction temperature is controlled to 72-76°C, and the reaction is conducted for 3.5 hours to obtain a reactive polymer;

[0035] ③ Stir at a rate of 300r / min, gradually add 8 parts by mass of biuret to the reaction kettle and mix with the reaction polymer obtained in step (1) ②. After the biuret is added, control the temperature to 48 -53℃, stir for 50min at a rate of 150r / min to obtain organic paint;

[0036] (2) Treatment of inorganic materials

[0037] ① Grind 7 parts by mass of zinc oxide particles into fine zinc oxide powder through a grinder;

[0038] ②Add the zinc oxide fine powder ob...

Embodiment 2

[0046] A new type of anti-corrosion coating for water pipe elbow, its preparation method is as follows:

[0047] (1) Organic material treatment

[0048] ① Put 33 parts by mass of isocyanate into the reactor, stir at a rate of 180r / min, and gradually add 25 parts by mass of amino resin to obtain a reaction mixture;

[0049] ②The mixed reactant obtained in step (1)① is stirred at a rate of 140r / min, the reaction temperature is controlled to be 75-79°C, and the reaction is carried out for 4.5 hours to obtain a reactive polymer;

[0050] ③ Stir at a rate of 320r / min, gradually add 8 parts by mass of biuret to the reaction kettle, and mix with the reaction polymer obtained in step (1) ②. After the biuret is added, control the temperature to 47. -50℃, stir for 50min at a rate of 190r / min to obtain organic paint;

[0051] (2) Treatment of inorganic materials

[0052] ① Grind 6 parts by mass of zinc oxide particles into fine zinc oxide powder through a grinder;

[0053] ②Add the zinc oxide fine ...

Embodiment 3

[0060] A new type of anti-corrosion coating for water pipe elbow, its preparation method is as follows:

[0061] (1) Organic material treatment

[0062] ①Put 26 parts by mass of isocyanate into the reaction kettle, stir at 230r / min, and gradually add 32 parts by mass of amino resin to obtain a reaction mixture;

[0063] ②The mixed reactants obtained in step (1)① are stirred at a rate of 210r / min, the reaction temperature is controlled to 73-76°C, and the reaction is conducted for 3.5 hours to obtain a reaction polymer;

[0064] ③ Stir at a rate of 320r / min, gradually add 7 parts by mass of biuret into the reactor, and mix with the reaction polymer obtained in step (1) ②. After the biuret is added, control the temperature to 43 -46℃, stir for 45min at a rate of 260r / min to obtain organic paint;

[0065] (2) Treatment of inorganic materials

[0066] ① Grind 7 parts by mass of zinc oxide particles into fine zinc oxide powder through a grinder;

[0067] ②Add the zinc oxide fine powder obtain...

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PUM

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Abstract

The invention relates to a novel water pipe elbow anticorrosion coating material, which comprises, by mass, 25-35 parts of isocyanate, 10-25 parts of an amino resin, 4-9 parts of biuret, 5-10 parts of nanometer silicon oxide, 3-9 parts of graphite powder, 4-8 parts of zinc oxide, 3-8 parts of attapulgite clay, and 6-12 parts of a dispersant. According to the present invention, the formula is novel and reasonable, and the coating material is coated on the elbow internal diameter, such that the long-term corrosion resistance and seepage resistance of the water pipe elbow is ensured, a certain water impact resistance is provided, the service life of the water pipe elbow is substantially prolonged, and the cost is reduced.

Description

Technical field [0001] The invention relates to the field of anti-corrosion technology, in particular to a new type of anti-corrosion paint for water pipe elbows. Background technique [0002] The water pipe elbow is used to connect two straight drainage pipes to achieve the purpose of water flow turning and transportation. Since the sewage is domestic wastewater or production wastewater, its chemical properties are corrosive. Turbulent flow is usually generated at the elbow, and the elbow is under greater pressure, which often drains or buffers the water flow on the structure, causing the sewage and bending The contact area of ​​the head is large, the time is long, it is easy to corrode and leak, and the elbow is replaced frequently, which not only causes a waste of manpower and material resources, but also brings inconvenience to the lives of residents. [0003] The anti-corrosion performance of the water pipe elbow is the biggest problem to improve its durability. There are man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D5/08C09D7/61C09D7/63C08G18/12C08G18/54C08G18/38C08G18/65
Inventor 朱加荣
Owner RONGCHENG PIPE IND
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