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Phenolic epoxy powder coating for anticorrosion in seawater desalination pipeline, and preparation method thereof

A phenolic epoxy powder and internal anti-corrosion technology, which is applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of shortening the service life of pipeline equipment, affecting anti-corrosion effects, and poor adhesion, and achieves excellent attachment Concentration, good resistance to seawater and salt spray, and the effect of dense paint film

Inactive Publication Date: 2019-09-06
上海泰梧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the harsh corrosion environment of seawater, ordinary phenolic epoxy coatings are often unable to withstand, and the coating is prone to bubbles, curing, poor adhesion, and peeling during a short service period, which affects the anti-corrosion effect and shortens the life of the coating. Service life of piping equipment

Method used

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  • Phenolic epoxy powder coating for anticorrosion in seawater desalination pipeline, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A phenolic epoxy powder coating for anti-corrosion in seawater desalination pipelines, the phenolic epoxy coating is composed of A component and B component with a mass ratio of 5:1;

[0030] A component comprises the component of following mass parts:

[0031] 460g epoxy resin, 350g pigments and fillers, 90g additives, 90g solvent;

[0032] Wherein, the epoxy resin is made up of novolac epoxy resin, bisphenol A type epoxy resin and bisphenol F type epoxy resin with a mass ratio of 2:1:1;

[0033] B component comprises the component of following mass parts:

[0034] Amine curing agent 400g, solvent 20g, coupling agent 30g;

[0035] The amine curing agent is cashew nut shell oil modified phenalkamine.

[0036] Among them, the pigments and fillers are composed of anticorrosion pigments, coloring pigments and system fillers with a mass ratio of 0.8:1:2. The anticorrosion pigment is zinc phosphate, the colored pigment is a mixture of mica iron oxide and aluminum powder ...

Embodiment 2

[0045] A phenolic epoxy powder coating for anti-corrosion in seawater desalination pipelines, the phenolic epoxy coating is composed of A component and B component with a mass ratio of 5.8:1;

[0046] A component comprises the component of following mass parts:

[0047] 500g epoxy resin, 320g pigments and fillers, 30g additives, 50g solvent, 0.50g nano calcium carbonate;

[0048] Wherein, the epoxy resin is made up of novolac epoxy resin, bisphenol A type epoxy resin and bisphenol F type epoxy resin with a mass ratio of 2.8:1:1;

[0049] B component comprises the component of following mass parts:

[0050] Amine curing agent 600g, solvent 100g, coupling agent 23g;

[0051] The amine curing agent is cashew nut shell oil modified phenalkamine.

[0052] Among them, the pigments and fillers are composed of anticorrosion pigments, coloring pigments and system fillers with a mass ratio of 0.6:1:2. The anticorrosion pigment is aluminum tripolyphosphate, the colored pigment is mic...

Embodiment 3

[0061] A phenolic epoxy powder coating for anti-corrosion in seawater desalination pipelines, the phenolic epoxy coating is composed of A component and B component with a mass ratio of 6.4:1;

[0062] A component comprises the component of following mass parts:

[0063] 380g parts of epoxy resin, 240g parts of pigments and fillers, 120g parts of additives, 150g parts of solvent, 5g parts of nano calcium carbonate;

[0064] Wherein, the epoxy resin is made up of novolac epoxy resin, bisphenol A type epoxy resin and bisphenol F type epoxy resin with a mass ratio of 3.6:1:1;

[0065] B component comprises the component of following mass parts:

[0066] 510g parts of amine curing agent, 50g parts of solvent, 12g parts of coupling agent;

[0067] The amine curing agent is cashew nut shell oil modified phenalkamine.

[0068] Among them, the pigments and fillers are composed of anticorrosion pigments, coloring pigments and system fillers with a mass ratio of 0.66:1:2. The anticorro...

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Abstract

The invention discloses a phenolic epoxy powder coating for anticorrosion in a seawater desalination pipeline. The phenolic epoxy coating is composed of a component A and a component B according to amass ratio of (5-7):1; the component includes, by mass, 30-50 parts of epoxy resin, 20-35 parts of a pigment and filler, 3-12 parts of an assistant and 5-15 parts of a solvent; and the component B includes, by mass, 40-60 parts of an amine curing agent, 2-10 parts of the solvent and 0.5-3 parts of a coupling agent. The phenolic epoxy coating of the invention has the advantages of good adhesion, good seawater corrosion resistance, good aging resistance and good application property.

Description

technical field [0001] The invention relates to the technical field of coating chemicals, in particular to a phenolic epoxy powder coating for anticorrosion in seawater desalination pipelines and a preparation method thereof. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. It can ensure a stable water supply for coastal residents and industrial boilers. The process of obtaining fresh water is called desalination. The three commonly used resins are epoxy resin, polyurethane and vinyl resin containing chlorine. Epoxy coatings and polyurethane coatings are the main force of heavy-duty anti-corrosion coatings and have great development prospects. According to anti-corrosion requirements, most of the anti-corrosion coatings currentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D163/00C09D5/08C09D5/10C09D7/61
CPCC08K2003/0812C08K2003/2272C08K2003/265C08K2003/3045C08K2003/327C08K2003/328C08K2201/011C08L2205/025C09D5/084C09D5/103C09D163/04C09D7/61C08L63/00C08K3/32C08K3/22C08K3/08C08K3/34C08K3/26C08K3/30
Inventor 方军锋粟鹰
Owner 上海泰梧科技有限公司
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