阅读说明：本技术 纳米硅碳改性石墨烯特种防腐涂料及其制备方法 (Nano silicon-carbon modified graphene special anticorrosive paint and preparation method thereof ) 是由 叶凤英 孙永安 王立峰 于 2019-10-26 设计创作，主要内容包括：一种纳米硅碳改性石墨烯特种防腐涂料及其制备方法,其中,涂料包括以下质量百分比的原料:高分子树脂25-50%,纳米硅碳改性石墨烯浆料1-10%,密着剂1-3%,颜料12-20%,树脂改性剂3-9%,催化剂1-3%,助剂2-8%,流变剂1-3%,分散剂0.5-2%,消泡剂0.1-1%,助溶剂5-10%和填料12-25%。本发明具有优异的耐高温高压腐蚀性能,耐温最高可达300℃,涂层附着力强,交联密度高耐蒸煮性优,对液体介质有极强的抗渗透性；表面润滑,抗冲击和耐磨性佳,底面合一,制备简单,施工方便。可广泛应用于油气田套管,油管,钻杆,钻铤和集输管线的防腐蚀,有效延长油气管道的使用寿命。可以替代进口产品。(The special anticorrosive paint comprises, by mass, 25-50% of a polymer resin, 1-10% of nano silicon-carbon modified graphene slurry, 1-3% of an adhesion agent, 12-20% of a pigment, 3-9% of a resin modifier, 1-3% of a catalyst, 2-8% of an auxiliary agent, 1-3% of a rheological agent, 0.5-2% of a dispersant, 0.1-1% of a defoaming agent, 5-10% of a cosolvent and 12-25% of a filler. The invention has excellent high temperature and high pressure corrosion resistance, the temperature resistance can reach 300 ℃ at most, the coating adhesion is strong, the crosslinking density is high, the boiling resistance is excellent, and the invention has strong permeability resistance to liquid media; the surface is lubricated, the impact resistance and the wear resistance are good, the bottom surface is integrated, the preparation is simple, and the construction is convenient. The corrosion-resistant oil-gas pipeline can be widely applied to corrosion resistance of oil-gas field casings, oil pipes, drill rods, drill collars and gathering pipelines, and the service life of the oil-gas pipeline is effectively prolonged. Can replace imported products.)

1. The special nano silicon-carbon modified graphene anticorrosive paint is characterized by comprising the following components in parts by weight: the paint comprises, by mass, 25-50% of a polymer resin, 1-10% of nano silicon-carbon modified graphene slurry, 1-3% of an adhesion agent, 12-20% of a pigment, 3-9% of a resin modifier, 1-3% of a catalyst, 2-8% of an auxiliary agent, 1-3% of a rheological agent, 0.5-2% of a dispersant, 0.1-1% of a defoaming agent, 5-10% of a cosolvent and 12-25% of a filler.

2. The special anticorrosive paint of nano silicon-carbon modified graphene according to claim 1, characterized in that: the paint comprises, by mass, 30-40% of a polymer resin, 3-7% of nano silicon-carbon modified graphene slurry, 1-3% of an adhesion agent, 14-18% of a pigment, 5-7% of a resin modifier, 1-3% of a catalyst, 4-6% of an auxiliary agent, 1-3% of a rheological agent, 0.5-2% of a dispersant, 0.1-1% of a defoaming agent, 6-8% of a cosolvent and 15-20% of a filler.

3. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the polymer resin is: amino resin, polyurethane resin, epoxy resin, modified phenolic resin, organosilicon modified epoxy resin or epoxy modified organosilicon resin, or a mixture of more than two of amino resin, polyurethane resin, epoxy resin, modified phenolic resin, organosilicon modified epoxy resin and epoxy modified organosilicon resin.

4. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the dispersing agent is a high molecular polymer.

5. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the pigment is titanium dioxide, cloud iron powder, carbon black, cobalt black, iron oxide red, iron oxide black or chromium oxide green; or a mixture of two or more of titanium dioxide, cloud iron powder, carbon black, cobalt black, iron oxide red, iron oxide black and chromium oxide green.

6. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the filler is glass flake, composite zinc aluminum phosphate, superfine talcum powder, sericite powder or barite powder, or a mixture of more than two of glass flake, composite zinc aluminum phosphate, superfine talcum powder, sericite powder and barite powder.

7. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the resin modifier is a resin modifier of multifunctional cardanol molecules.

8. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the adhesion agent is one or more of epoxy group-containing or amino functional group-containing solution.

9. The special anticorrosive paint of nano silicon-carbon modified graphene as claimed in claim 1 or 2, characterized in that: the rheological agent is organic bentonite, polyamide sodium or fumed silica.

10. A preparation method of a special nano silicon-carbon modified graphene anticorrosive paint is characterized by comprising the following steps: putting the resin, the auxiliary agent and the nano silicon carbon modified graphene slurry into a paint mixing tank in sequence according to the using amount of claim 1 or claim 1, and uniformly stirring; then adding the pigment, the filler and the auxiliary agent, and uniformly stirring; and grinding to reach preset fineness and viscosity.

Technical Field

The invention relates to a special nano silicon-carbon modified graphene anticorrosive paint and a preparation method thereof.

Background

With the continuous progress of the petrochemical industry technology, the problem of corrosion of metal pipeline equipment is more and more serious. The economic loss caused by metal corrosion is huge every year in China, and meanwhile, the corrosion is also an important factor for restricting the development of the petrochemical industry. Well corrosion, especially in corrosion in oil recovery and gathering systems: the corrosion of the oil well refers to the corrosion of oil pipes, casings and downhole tools of an oil-water well caused by harmful components such as carbon dioxide, hydrogen sulfide and produced water contained in produced liquid and associated gas. Also corrosion of the gathering system: when crude oil transported in a gathering pipeline contains more water and the water contains oxygen, carbon dioxide or sulfate reducing bacteria, severe electrochemical corrosion is generated inside the gathering pipeline.

In recent years, the corrosion prevention of oil pipes has attracted great attention in oil fields and corrosion prevention at home and abroad, and a series of corrosion prevention measures such as corrosion-resistant alloy pipes, coating pipes and the like are formed in succession. At present, the anticorrosive paint used for the inner wall of the petroleum pipeline mainly comprises two components, and the performance index can meet the use requirement. However, the two-component coating has a short activation period, and the gel reaction is usually started about 2 hours after the curing agent is added, so that the construction and the use are inconvenient, the efficiency is not high, and the quality problem of the coating caused by more time and less time when the curing agent is added often exists.

The pipe coating is researched from 80 years of the 20 th century by taking AMF-Tubbosope and PO as representatives, a series of oil pipe single-component anticorrosive coatings have been formed, the sales volume accounts for more than 90 percent of the international market, and the market price is extremely high. At present, the single-component anticorrosive paint adopts the traditional corrosion-resistant principle to prevent the metal from contacting with a corrosive medium, and the corrosion resistance, the sealing property, the corrosion inhibition and other properties of the coating are utilized to achieve the aim of protecting the metal. Although the basic performance requirements can be met, the following problems still exist, firstly, the storage stability is poor, most of the materials begin to react, thicken and even gelatinize after being placed at normal temperature for 3-6 months; secondly, the adhesive force of the paint film with insufficient crosslinking density is general, and the impermeability to liquid media is limited; thirdly, the coating has general impact resistance and wear resistance, resists temperature less than 180 ℃, and is easy to cause coating foaming and adhesive force reduction especially under high temperature and high pressure; fourthly, the construction operation is inconvenient.

Disclosure of Invention

In order to solve the problems, the invention provides a special nano silicon-carbon modified graphene anticorrosive paint with good storage stability, excellent adhesive force and good wear resistance and a preparation method thereof for the society.

The technical scheme of the invention is as follows: the special anticorrosive paint comprises, by mass, 25-50% of a polymer resin, 1-10% of nano silicon carbon modified graphene slurry, 1-3% of an adhesion agent, 12-20% of a pigment, 3-9% of a resin modifier, 1-3% of a catalyst, 2-8% of an auxiliary agent, 1-3% of a rheological agent, 0.5-2% of a dispersing agent, 0.1-1% of a defoaming agent, 5-10% of a cosolvent and 12-25% of a filler.

As an improvement of the invention, the special nano silicon carbon modified graphene anticorrosive paint comprises, by mass, 30-40% of a polymer resin, 3-7% of nano silicon carbon modified graphene slurry, 1-3% of an adhesion agent, 14-18% of a pigment, 5-7% of a resin modifier, 1-3% of a catalyst, 4-6% of an auxiliary agent, 1-3% of a rheological agent, 0.5-2% of a dispersant, 0.1-1% of a defoaming agent, 6-8% of a cosolvent and 15-20% of a filler.

As an improvement of the invention, the polymer resin is: amino resin, polyurethane resin, epoxy resin, modified phenolic resin, organic silicon modified epoxy resin, epoxy modified organic silicon resin or a mixture of more than two of the amino resin, the polyurethane resin, the epoxy resin, the modified phenolic resin, the organic silicon modified epoxy resin and the epoxy modified organic silicon resin.

As an improvement of the invention, the nano silicon-carbon modified graphene slurry is a slurry of Jiangxi Vietnamei model VZ-1001, and the particle size is selected from 10-100 nm.

As an improvement of the invention, the defoaming agent is a silicone high molecular polymer, such as EFKA 2726.

As an improvement of the invention, the dispersant is a high molecular polymer, such as BYK 163.

As an improvement to the invention, the pigment is titanium dioxide, cloud iron powder, carbon black, cobalt black, iron oxide red, iron oxide black or chromium oxide green; or a mixture of two or more thereof.

As an improvement of the invention, the filler is glass flake, composite zinc aluminum phosphate, superfine talcum powder, sericite powder or barite powder, or a mixture of more than two of the glass flake, the composite zinc aluminum phosphate, the superfine talcum powder, the sericite powder or the barite powder.

As an improvement to the present invention, the resin modifier is a resin modifier of a multifunctional cardanol molecule, such as: LITE 2020.

As a modification of the present invention, the catalyst is a phosphoric acid solution.

As an improvement to the invention, the adhesion agent is a mixture of one or more of solutions containing epoxy or amino functional groups.

As an improvement to the invention, the rheological agent is organobentonite, sodium polyamide or fumed silica.

The invention also provides a preparation method of the special nano silicon carbon modified graphene anticorrosive paint, which comprises the steps of putting the resin, the auxiliary agent and the nano silicon carbon modified graphene slurry into a paint mixing tank in sequence according to the using amount, and uniformly stirring; then adding the pigment, the filler and the auxiliary agent, and uniformly stirring; and grinding to reach preset fineness and viscosity.

The coating prepared on the pipe wall by adopting the coating has excellent high-temperature and high-pressure corrosion resistance, the temperature resistance can reach 300 ℃ at most, the coating has strong adhesive force, high crosslinking density and excellent boiling resistance, and has extremely strong impermeability to liquid media; the surface is lubricated, the impact resistance and the wear resistance are good, the bottom surface is integrated, the preparation is simple, and the construction is convenient. The corrosion-resistant oil-gas pipeline can be widely applied to corrosion resistance of oil-gas field casings, oil pipes, drill rods, drill collars and gathering pipelines, and the service life of the oil-gas pipeline is effectively prolonged. Can replace imported products.

Detailed Description