阅读说明：本技术 页岩气开采设备用耐磨防腐材料及其制备方法 (Wear-resistant anticorrosive material for shale gas exploitation equipment and preparation method thereof ) 是由 亓峰 于 2020-06-12 设计创作，主要内容包括：本发明属于页岩油气装置设备保护技术领域,涉及页岩气开采设备用耐磨防腐材料及其制备方法。本发明耐磨防腐材料制备原料包括以下重量份数的组份：40-70份环氧粉末树脂、30-50份聚苯乙烯树脂、15-20份聚四氟乙烯树脂、30-60份片状锌粉、5-10份碱金属钛基晶须、5-10份磷酸锌、6-10份Si<Sub>4</Sub>B<Sub>2</Sub>C<Sub>1</Sub>N<Sub>1</Sub>Al<Sub>0.5</Sub>颗粒、填料5-10份、固化剂5-10份、分散剂1-3份、流平剂1-3份、增塑剂1-3份、消泡剂1-3份、抗腐蚀剂10-30份、磷化促进剂5-15份、溶剂汽油100份。本发明这种材料作用更加长效,增强涂层抗压强度,使开采设备更加耐腐蚀、耐磨,降低了维修率和设备腐蚀浪费。(The invention belongs to the technical field of shale oil-gas device equipment protection, and relates to a wear-resistant anticorrosive material for shale gas exploitation equipment and a preparation method thereof. The wear-resistant anticorrosive material comprises the following raw materials in parts by weight: 40-70 parts of epoxy powder resin, 30-50 parts of polystyrene resin, 15-20 parts of polytetrafluoroethylene resin, 30-60 parts of flaky zinc powder, 5-10 parts of alkali metal titanium-based whisker, 5-10 parts of zinc phosphate and 6-10 parts of Si 4 B 2 C 1 N 1 Al 0.5 Particles, 5-10 parts of filler, 5-10 parts of curing agent, 1-3 parts of dispersing agent and 1-3 parts of flatting agent1-3 parts of plasticizer, 1-3 parts of defoaming agent, 10-30 parts of corrosion inhibitor, 5-15 parts of phosphating accelerator and 100 parts of solvent gasoline. The material has longer-acting effect, enhances the compressive strength of the coating, enables mining equipment to be more corrosion-resistant and wear-resistant, and reduces the maintenance rate and the corrosion waste of the equipment.)

1. The wear-resistant anticorrosive material for shale gas exploitation equipment is characterized by comprising the following components in parts by weight: 40-70 parts of epoxy powder resin, 30-50 parts of polystyrene resin, 15-20 parts of polytetrafluoroethylene resin, 30-60 parts of flaky zinc powder, 5-10 parts of alkali metal titanium-based whisker, 5-10 parts of zinc phosphate and 6-10 parts of Si₄B₂C₁N₁Al_0.55-10 parts of particles, 5-10 parts of filler, 5-10 parts of curing agent, 1-3 parts of dispersing agent, 1-3 parts of flatting agent, 1-3 parts of plasticizer, 1-3 parts of defoaming agent, 10-30 parts of anti-corrosion agent, 5-15 parts of phosphating accelerator and 100 parts of solvent gasoline.

2. The wear-resistant anticorrosive material for shale gas exploitation equipment according to claim 1, wherein the anticorrosive agent is one or more of zinc dihydrogen phosphate and manganese dihydrogen phosphate.

3. The wear-resistant anticorrosive material for shale gas exploitation equipment according to claim 2, wherein the phosphating accelerator is one or more than two of ammonium molybdate, sodium molybdate, potassium molybdate, ammonium manganese molybdate and zinc molybdate.

4. The wear-resistant anticorrosive material for shale gas mining equipment according to claim 1, wherein the filler is one or more than two of calcium carbonate, talcum powder, kaolin, titanium dioxide or bentonite.

5. The wear-resistant anticorrosive material for shale gas exploitation equipment according to claim 1, wherein the curing agent is one or more than two of diethylenetriamine, ethylenediamine or diethylamine.

6. The wear-resistant anticorrosive material for shale gas exploitation equipment according to claim 1, wherein the dispersant is one or more of a hydrophobic modified carboxylic acid sodium salt, a polyacrylic acid sodium salt or an ammonium salt, and the leveling agent is any one of silicone oil or polydimethylsiloxane.

7. The wear-resistant and corrosion-resistant material for shale gas exploitation equipment as claimed in claim 1, wherein the defoaming agent is one or more of silicone, polyether, organosiloxane and amide.

8. The wear-resistant and corrosion-resistant material for shale gas exploitation equipment as claimed in claim 1, wherein the plasticizer is one or more than two of tricresyl phosphate, triethyl citrate, trioctyl citrate, diisooctyl adipate and acetyl tri-n-butyl citrate.

9. The preparation method for preparing the wear-resistant anticorrosive material for the shale gas exploitation equipment as claimed in any one of claims 1 to 8 is characterized by comprising the following steps:

(1) adding cubic silicon powder, hexagonal boron nitride powder, graphite powder and metal aluminum powder serving as raw materials into a high-speed mixer, and fully mixing and uniformly stirring at the rotating speed of 150-250 rpm to form slurry; sintering the mixture in a sintering device to obtain Si₄B₂C₁N₁Al_0.5Particles;

(2) adding epoxy powder resin, polystyrene resin, polytetrafluoroethylene resin and solvent gasoline into a reaction kettle, starting stirring at the rotating speed of 1200 r/min-2000 r/min, then sequentially adding a defoaming agent, a filler, a curing agent, a dispersing agent, a leveling agent and a plasticizer according to the proportion, and uniformly stirring;

(3) then adding alkali metal titanium-based whisker, zinc phosphate, flaky zinc powder and Si into the mixture in sequence according to the proportion₄B₂C₁N₁Al_0.5The wear-resistant anticorrosive material for the shale gas exploitation equipment is prepared by adding each raw material, mixing for 20-60 min at the rotating speed of 260-350 rpm, and standing at normal temperature for 8-20 h.

Technical Field

The invention belongs to the technical field of shale oil-gas device equipment protection, and relates to a wear-resistant anticorrosive material for shale gas exploitation equipment and a preparation method thereof.

Background

The shale gas refers to unconventional natural gas which is existed in a reservoir rock system mainly containing organic-rich shale, is biochemical formation gas, thermal formation gas or a mixture of the biochemical formation gas and the thermal formation gas which are continuously generated, can exist in a free state in natural cracks and pores, exists on the surfaces of kerogen and clay particles in an adsorption state, and is stored in the kerogen and the asphaltene in a dissolving state in a very small amount.

In 2019, a Lu 203 well of Lucounty radar village of Sichuan province completes blowout test, the Lu 203 well is a deep shale gas evaluation well, a horizontal section of 1500 m is successfully drilled in a shale stratum with the stratum temperature of more than 140 ℃, China petroleum refers to the new generation pressure process technology in North America, and the volume reformation of a shale reservoir stratum with the buried depth of nearly 4000 m, the fracture pressure of more than 110 MPa, the horizontal stress difference of more than 20 MPa and the relatively-developed micro cracks is realized by adopting a fracturing process of dense cutting, high-strength sand adding and temporary plugging turning in combination with the geological engineering characteristics of the deep shale stratum in the south of Sichuan.

The shale gas mining equipment is mainly iron or steel structural equipment, the mechanical structures are very easy to corrode in the shale gas mining process and in the environments of shale gas and other byproducts, and meanwhile, the equipment is often used in the environments of high temperature, high pressure and the like, so that the corrosion degree is further accelerated; therefore, the anti-corrosion wear-resistant coating material suitable for shale gas exploitation equipment is developed and used for the surface of a structure easy to corrode, so that the maintenance frequency is reduced, and the control on the exploitation cost of the shale gas is particularly important.

Disclosure of Invention

The invention aims to overcome the defects of the existing production process, and provides a wear-resistant anticorrosive material for shale gas exploitation equipment and a preparation method thereof.

The invention is realized by adopting the following technical scheme:

the invention provides a wear-resistant anticorrosive material for shale gas exploitation equipment, which is characterized in that the preparation raw materials comprise the following components in parts by weight: 40-70 parts of epoxy powder resin, 30-50 parts of polystyrene resin, 15-20 parts of polytetrafluoroethylene resin, 30-60 parts of flaky zinc powder, 5-10 parts of alkali metal titanium-based whisker, 5-10 parts of zinc phosphate and 6-10 parts of Si₄B₂C₁N₁Al_0.5Particles, 5-10 parts of filler, 5-10 parts of curing agent, 1-3 parts of dispersant and 1-3 parts of plasticizer, 1-3 parts of defoamer, 10-30 parts of corrosion inhibitor, 5-15 parts of phosphating accelerator and 100 parts of solvent gasoline.

Specifically, the corrosion inhibitor is one or more than two of zinc dihydrogen phosphate and manganese dihydrogen phosphate.

Wherein the phosphating accelerant is one or more than two of ammonium molybdate, sodium molybdate, potassium molybdate, ammonium manganese molybdate and zinc molybdate.

Preferably, the filler is one or more than two of calcium carbonate, talcum powder, kaolin, titanium dioxide or bentonite.

Preferably, the curing agent is one or more of diethylenetriamine, ethylenediamine or diethylamine.

Preferably, the dispersing agent is one or more of hydrophobic modified carboxylic acid sodium salt, polyacrylic acid sodium salt or ammonium salt, and the leveling agent is any one of silicone oil or polydimethylsiloxane.

Preferably, the defoaming agent is one or more of silicone, polyether, organosiloxane or amide.

Preferably, the plasticizer is one or more than two of tricresyl phosphate, triethyl citrate, trioctyl citrate, diisooctyl adipate and acetyl tri-n-butyl citrate.

The invention also provides a preparation method of the wear-resistant anticorrosive material for shale gas exploitation equipment, which is characterized by comprising the following steps:

(1) adding cubic silicon powder, hexagonal boron nitride powder, graphite powder and metal aluminum powder serving as raw materials into a high-speed mixer, and fully mixing and uniformly stirring at the rotating speed of 150-250 rpm to form slurry; sintering the mixture in a sintering device to obtain Si₄B₂C₁N₁Al_0.5Particles;

(2) adding epoxy powder resin, polystyrene resin, polytetrafluoroethylene resin and solvent gasoline into a reaction kettle, starting stirring at the rotating speed of 1200 r/min-2000 r/min, then sequentially adding a defoaming agent, a filler, a curing agent, a dispersing agent, a leveling agent and a plasticizer according to the proportion, and uniformly stirring;

(3) then adding alkali metal titanium-based whisker, zinc phosphate, flaky zinc powder and Si into the mixture in sequence according to the proportion₄B₂C₁N₁Al_0.5The wear-resistant anticorrosive material for the shale gas exploitation equipment is prepared by adding each raw material, mixing for 20-60 min at the rotating speed of 260-350 rpm, and standing at normal temperature for 8-20 h.

The invention has the beneficial effects that:

the invention uses phosphate in flaky zinc powder and Si₄B₂C₁N₁Al_0.5Reduction of Na during mixing of the granules⁺、Ca²⁺、Mg^{2 +}、 Cl^-The plasma concentration reduces the influence of the plasma concentration on the stability of the resin slurry, and avoids quick thickening, even emulsion breaking and segregation of the system. The corrosion inhibitor/phosphating accelerator is diluted with water, the system acidity becomes weak, zinc phosphate is formed under the action of the phosphating accelerator, and a manganese phosphate coating is attached to the surface of steel and iron to protect the surface of equipment. Si₄B₂C₁N₁Al_0.5The particles have the characteristics of large specific surface area, high strength and wear resistance, and can improve the wear resistance of the coating.

Detailed Description

The present invention will be described in further detail in order to make the object and technical solution of the present invention more apparent. The experimental methods described in the following examples are all conventional methods unless otherwise specified; the specific techniques or conditions are not indicated in the examples, and the techniques or conditions are described in the literature in the field or according to the product specification; the reagents and materials are commercially available, unless otherwise specified.

To avoid repetition, the test method related to this specific embodiment is described below in a unified manner, and is not described in detail in the specific embodiment:

anticoagulant ice agent property test method: the method comprises the steps of ISO 11997-1-2005 color paint and varnish, periodic corrosion resistance measurement, GB9286-1998 color paint and varnish, grid test of a paint film, GB/T6739-2006 color paint and varnish, pencil method measurement of paint film hardness, GB/T14522 and 2008 artificial weather aging test method of plastic, paint and rubber materials for mechanical industrial products, fluorescent ultraviolet lamps;