CN119264777A - A pump body anti-abrasion protective coating material and preparation method thereof - Google Patents

Abstract

The patent of the present invention protects a pump body anti-wear protective coating material and its preparation method. A pump body anti-wear protective coating material is made by mixing an epoxy resin component and an amine curing agent component in a mass ratio of (1~5):1; the epoxy resin component includes a composite epoxy resin, a first auxiliary agent, and a first filler, and the mass ratio is 100: (17~35): (100~350); the amine curing agent component includes a composite amine curing agent, a second auxiliary agent, and a second filler, and the mass ratio is 100: (4~11): (50~100). It has excellent anti-abrasion performance and has a good protective effect on erosion by high-speed sand-containing water flow; it has reliable adhesion to the metal base surface of the pump body; the protective thickness can be adjusted in a wide range, and the protective thickness can be designed according to needs within the range of 1.0mm to 20.0mm, and it can be applied once, and the coating has good integrity.

Description

Pump body anti-abrasion protective coating material and preparation method thereof

Technical Field

The invention belongs to the technical field of anti-abrasion protective materials, and particularly relates to an anti-abrasion protective coating material for a pump body and a preparation method thereof.

Background

The pump station is one of main facilities in the irrigation area and is used for lifting water level, and the core equipment water pump is used for leading high-pressure high-speed water flow to pass through in the water lifting process, particularly high-speed water flow with higher sand content to generate cavitation and abrasion effects on the water pump volute and the impeller, so that the pump body part is seriously damaged.

The water flow erosion of the water pump causes the problems of serious abrasion of the water pump flow-through component, short service life, high energy consumption, low operation efficiency and the like, the engineering of the pumping station in the irrigation area is deeply damaged, the annual flood season is more serious, the water pump not only needs to be overhauled every year, but also greatly shortens the service life of the water pump.

The method is characterized in that the metal repair welding and the laser cladding adopt alloy materials, the punching and grinding performance is good, but the maintenance process is complex, special equipment is needed, even the special equipment is needed to be transported to a professional company for treatment, the high temperature in the treatment process easily causes deformation, stress and the like, the punching and grinding performance of the punching and grinding protection plate is good, but the prefabricated plate is difficult to install, the punching and grinding protection mortar material is also a common repairing method at present, but the anti-punching performance is still required to be further improved, in addition, the application thickness is difficult to be less than 0.5mm, the flow channel shape and the output efficiency of the water pump are greatly influenced, in addition, the requirement on the environment temperature in the construction is higher, the pump body is sometimes required to be subjected to heating treatment and the like.

Disclosure of Invention

Based on the abrasion-resistant protective coating material for the pump body and the preparation method thereof, the defects of the prior art are overcome.

In order to achieve the above purpose, the present invention adopts the following scheme:

The pump body anti-abrasion protective coating material is prepared by mixing an epoxy resin component and an amine curing agent component according to the mass ratio of (1-5) to 1, wherein the epoxy resin component comprises (by mass) 100 (17-35) of a composite epoxy resin, 100-350 of a first auxiliary agent and 50-100 of a first filling material, and the amine curing agent component comprises (by mass) 100 (4-11) of a composite amine curing agent, a second auxiliary agent and a second filling material.

The composite epoxy resin is formed by mixing (20-100) glycidyl ether epoxy resin and epoxy resin in glycidyl ester epoxy resin, wherein the glycidyl ether epoxy resin comprises any one of E51 and E44 epoxy resin, and the glycidyl ester epoxy resin comprises any one of phthalic acid glycidyl ester and tetrahydrophthalic acid glycidyl ester.

Preferably, the first auxiliary agent comprises a rheological agent, a toughening agent and a coupling agent, wherein the mass ratio of the rheological agent to the toughening agent to the coupling agent is (5-10): (10-20): (2-5), the rheological agent is fumed silica and soluble castor oil, the toughening agent is a reactive elastomer, and the coupling agent is a silane coupling agent.

Preferably, the reactive elastomer is any one of an epoxy-terminated nitrile rubber and a reactive polyurethane.

Preferably, the silane coupling agent is any one of a coupling agent KH-550, a coupling agent B-201 and diethylenetriamine methyl triethoxymethyl silane.

Preferably, the first filler is graded wear-resistant particle mixed filler, and the first filler is a mixture of quartz powder, cast stone powder, quartz sand, silicon carbide, quartz glass beads and glass flakes.

Preferably, the compound amine curing agent is formed by mixing one or more modified polyamines and polyamide-polyamine, wherein the modified polyamine is any one of modified aliphatic polyamine and phenolic amine.

Preferably, the second auxiliary agent comprises an anti-settling agent and a coupling agent, and the mass ratio is (3-8): 1-3, wherein the anti-settling agent is organic bentonite, and the coupling agent is a silane coupling agent.

Preferably, the second filler includes any one of quartz powder and cast stone powder.

A preparation method of an anti-abrasion protective coating material for a pump body comprises the following steps:

s10, preparing an epoxy resin component;

s11, mixing the epoxy resin, the first auxiliary agent and the first filling material with 100 meshes or more, and stirring at a high speed for 20min, wherein the stirring speed is not lower than 25m/s;

S12, adding a first filling material below 100 meshes, and stirring at a medium-low speed for 2min at a stirring speed of about 10 m/s;

s13, obtaining an epoxy resin component;

s20, preparing an amine curing agent component:

S21, mixing the composite curing agent and the second auxiliary agent, and stirring at a high speed for 20min, wherein the stirring speed is not lower than 25m/s;

s22, adding a second filling material, and stirring at a medium-low speed for 5min at a stirring speed of about 10 m/s;

S23, obtaining an amine curing agent group;

s30, mixing the prepared epoxy resin component with an amine curing agent component according to the mass ratio of (1-5): 1 to obtain the pump body anti-abrasion protective coating material.

The technical scheme adopted by the application can achieve the following beneficial effects:

1. the anti-abrasion agent has excellent anti-abrasion performance and has good protection effect on erosion of high-speed sand-containing water flow;

2. The bonding with the metal base surface of the pump body is reliable, and the bonding strength can reach more than 20 MPa;

3. The protective thickness can be designed within the range of 1.0 mm-20.0 mm according to the requirements, and the coating is completed once, so that the coating integrity is good;

4. The water treatment agent is solvent-free and does not contain harmful substances, and meets the requirements of national GB/T17219-1998 safety evaluation Standard of domestic Drinking Water delivery and distribution Equipment and protective materials;

5. The construction is convenient, the pump body is not required to be heated, and the coating can be applied within the range of 5-40 ℃.

Detailed Description

The present application will be described more fully hereinafter in order to facilitate an understanding of the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when one device is considered to be "connected" to another device, it may be directly connected to the other device or there may be an intervening device present at the same time. The terms "inner," "top," "upper," "lower," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The application provides an anti-abrasion protective coating material for a pump body, which is prepared by mixing an epoxy resin component and an amine curing agent component according to the mass ratio of (1-5) to 1, wherein the epoxy resin component comprises (by mass) 100 parts (17-35) of a composite epoxy resin, 100-350 parts of a first auxiliary agent and 50-100 parts of a first filling material, and the amine curing agent component comprises (by mass) 100 parts (4-11) of a composite amine curing agent, a second auxiliary agent and a second filling material.

The complex amine curing agent is an organic polyamine compound widely used as an epoxy resin curing agent. There are four classes of single polyamine, mixed polyamine, modified polyamine and eutectic mixed polyamine. The single polyamine is mainly four kinds of aliphatic amine, alicyclic amine, aromatic amine and polyamide. While aliphatic amine and polyamide are room temperature curing agents, aromatic amine needs to be cured by heating, and the heat resistance, mechanical strength and corrosion resistance of the cured product are far superior to those of aliphatic amine. In terms of heat resistance, aromatic amine curing agents are preferred, followed by alicyclic amines, and, in the worst case, polyamides. Fatty amines have great toxicity and irritation, and aromatic amines have high curing temperatures, which are all required to be modified, so that various modified polyamines, such as epoxide-added polyamines, michael-added polyamines, aromatic amine mixtures, and the like, appear.

According to the mass ratio of (17-35): (100-350) of the composite epoxy resin, the first auxiliary agent and the first filling material, mixing to prepare an epoxy resin component, and then according to the mass ratio of (4-11): (50-100) of the composite amine curing agent, the second auxiliary agent and the second filling material, preparing an amine curing agent component, mixing the composite epoxy resin and the amine curing agent component according to the weight ratio of (1-5): 1, preparing an anti-abrasion protective coating material of a pump body, and coating the anti-abrasion protective coating material on the pump body of the water pump, and detecting the anti-abrasion performance, the bonding strength, the content of harmful substances, the construction temperature and the like.

The application adopts the technical proposal of the pump body anti-abrasion protective coating material to achieve the following

The beneficial effects are that:

1. the anti-abrasion agent has excellent anti-abrasion performance and has good protection effect on erosion of high-speed sand-containing water flow;

2. The bonding with the metal base surface of the pump body is reliable, and the bonding strength can reach more than 20 MPa;

3. The protective thickness can be designed within the range of 1.0 mm-20.0 mm according to the requirements, and the coating is completed once, so that the coating integrity is good;

4. The water treatment agent is solvent-free and does not contain harmful substances, and meets the requirements of national GB/T17219-1998 safety evaluation Standard of domestic Drinking Water delivery and distribution Equipment and protective materials;

5. The construction is convenient, the pump body is not required to be heated, and the coating can be applied within the range of 5-40 ℃.

Based on the scheme, the composite epoxy resin is formed by mixing glycidyl ether epoxy resin and epoxy resin in glycidyl ester epoxy resin, the mixing ratio of the glycidyl ether epoxy resin and the epoxy resin is 100 (20-100), wherein the glycidyl ether epoxy resin comprises any one of E51 and E44 epoxy resin, and the glycidyl ester epoxy resin comprises any one of phthalic acid glycidyl ester and tetrahydrophthalic acid glycidyl ester.

The glycidyl ether epoxy resin is prepared by polycondensating phenols or alcohols containing active hydrogen and epichlorohydrin. The E44 epoxy resin is an important high polymer material, and the epoxy resin E44 has excellent chemical stability, mechanical property and heat resistance, and is widely applied to the fields of paint, adhesive, electronic material and the like. Meanwhile, the epoxy resin E44 can be blended and modified with other compounds to obtain better performance, and the E51 epoxy resin is a polymer synthetic material and can be widely applied to the fields of adhesives, coatings, composite materials and the like. The composite material consists of epoxy resin and curing agent, has excellent chemical stability and mechanical performance, and is one kind of engineering material with high performance and high quality.

The types of glycidyl ester type epoxy resins are many, but mainly used in industrial production are glycidyl phthalate, tetrahydroglycidyl phthalate and hexahydroglycidyl phthalate. The molecular structure contains benzene ring and glycidyl ester bond with stronger polarity, besides the universality of epoxy resin, the epoxy resin has the characteristics of small viscosity, good manufacturability, large reaction activity, good compatibility, high bonding strength, good electrical insulation property, good ultralow temperature resistance, surface glossiness, light transmittance, good weather resistance and the like, can be prepared into an adhesive with excellent performance, has excellent photocuring property and anaerobic adhesive, can be used independently or used as a diluent, and phthalic anhydride is an important basic organic raw material, is a main raw material for manufacturing plasticizers, polyester resins and alkyd resins, and can also be used for producing products such as medicines, dye intermediates, coatings, pesticides, saccharin and the like.

Further, the first auxiliary agent comprises a rheological agent, a toughening agent and a coupling agent, wherein the mass ratio of the rheological agent to the toughening agent to the coupling agent is (5-10): (10-20): (2-5), the rheological agent is fumed silica and soluble castor oil, the toughening agent is a reactive elastomer, and the coupling agent is a silane coupling agent.

Fumed silica (fumed silica) is one of extremely important high-tech ultrafine inorganic new materials, and has the characteristics of large specific surface area, strong surface adsorption force, large surface energy, high chemical purity, good dispersion performance, thermal resistance, electric resistance and the like because of small particle size, and has irreplaceable effects due to the excellent stability, reinforcement, thickening property and thixotropy, and is unique in various subjects and fields.

The rheological agent adopts fumed silica and soluble castor oil to be used together, so that good thixotropic effect can be obtained.

Specifically, the reactive elastomer is any one of epoxy terminated nitrile rubber and reactive polyurethane. The silane coupling agent is any one of a coupling agent KH-550, a coupling agent B-201 and diethylenetriamine methyl triethoxy methyl silane.

Silane coupling agents are a class of organosilicon compounds that contain two groups of different chemical nature in the molecule at the same time, and their classical products can be represented by the general formula YSiX 3. Wherein Y is a non-hydrolyzable group (organofunctional group), typically a vinyl group, an amino group, a thiol group, an epoxy group, or the like. X is a hydrolyzable group, and may be a methoxyethoxy group, a halogen group or the like. Because of this special structure, it has both a reactive group capable of chemically binding to an inorganic material (e.g., glass, silica sand, metal, etc.) and a reactive group capable of chemically binding to an organic material (synthetic resin, etc.) in its molecule, and can be used for surface treatment.

The adhesive property of the glass fiber and the resin can be improved, the strength, the electrical property, the water resistance, the weather resistance and the like of the glass fiber reinforced composite material are greatly improved, and the effect is very remarkable on the improvement of the mechanical property of the composite material even in a wet state.

The filler may be surface-treated in advance or may be directly added to the resin. Can improve the dispersibility and the adhesive force of the filler in the resin, improve the compatibility between the inorganic filler and the resin, improve the technological performance and improve the mechanical, electrical and weather-resistant performances of filled plastics (including rubber).

The silane coupling agent can solve the problem that certain materials cannot be bonded for a long time. The silane coupling agent as tackifier has two kinds of radicals, one of which may be combined with adhered skeleton material and the other of which may be combined with polymer material or adhesive to form high strength chemical bond in the adhesion interface, so as to improve the adhesion strength greatly. The silane coupling agent is generally applied in three ways, namely, a surface treating agent used as a framework material, an adhesive and a polymer material.

In the above scheme, the first filler is graded wear-resistant particle mixed filler, and the first filler comprises a mixture of quartz powder, cast stone powder, quartz sand, silicon carbide, quartz glass beads and glass flakes.

The first filling materials are separated into two types of first filling materials below 100 meshes, 100 meshes and above through a sieve, and the first filling materials with different meshes are added according to different time periods.

In a preferred scheme, the composite amine curing agent is formed by mixing one or more modified polyamines and polyamide-polyamine, wherein the modified polyamine is any one of modified aliphatic polyamine and phenolic amine.

The complex amine curing agent is an organic polyamine compound widely used as an epoxy resin curing agent. There are four classes of single polyamine, mixed polyamine, modified polyamine and eutectic mixed polyamine. The single polyamine is mainly four kinds of aliphatic amine, alicyclic amine, aromatic amine and polyamide. While aliphatic amine and polyamide are room temperature curing agents, aromatic amine needs to be cured by heating, and the heat resistance, mechanical strength and corrosion resistance of the cured product are far superior to those of aliphatic amine. In terms of heat resistance, aromatic amine curing agents are preferred, followed by alicyclic amines, and, in the worst case, polyamides. Fatty amines have great toxicity and irritation, and aromatic amines have high curing temperatures, which are all required to be modified, so that various modified polyamines, such as epoxide-added polyamines, michael-added polyamines, aromatic amine mixtures, and the like, appear.

Based on the scheme, the second auxiliary agent comprises an anti-settling agent and a coupling agent, the mass ratio is (3-8): 1-3, wherein the anti-settling agent is organic bentonite, and the coupling agent is a silane coupling agent.

The anti-settling agent is organic bentonite, the organic bentonite is required to be activated in advance, and the coupling agent of the second auxiliary agent and the coupling agent of the first auxiliary agent adopt silane coupling agents with the same structure process.

Further, the second filler includes any one of quartz powder and cast stone powder.

The quartz powder is white granular or powder, and has the characteristics of high hardness, high melting point, low thermal expansion coefficient and the like. It has good chemical stability and wear resistance, and can maintain stability at high temperature. The cast stone powder is an important building material, and is made up by mixing quartz, calcareous mineral and potash mineral, etc. and has the advantages of strong durability and good consolidation property

Based on the pump body abrasion-resistant protective coating material, the preparation method of the pump body abrasion-resistant protective coating material comprises the following steps:

S10, preparing an epoxy resin component, S11, mixing the epoxy resin, a first auxiliary agent and a first filling material with 100 meshes or more, and stirring at a high speed for 20min at a stirring speed of not less than 25m/s, S12, adding the first filling material with 100 meshes or less, stirring at a medium-low speed for 2min at a stirring speed of about 10m/s, S13, obtaining the epoxy resin component;

s20, preparing an amine curing agent component, wherein the S21 is carried out by mixing a composite curing agent and a second auxiliary agent, stirring at a high speed for 20min at a stirring speed of not less than 25m/s, the S22 is carried out by adding a second filling material, stirring at a medium-low speed for 5min at a stirring speed of about 10m/s, and the S23 is carried out to obtain an amine curing agent group;

s30, mixing the prepared epoxy resin component with an amine curing agent component according to the mass ratio of (1-5): 1 to obtain the pump body anti-abrasion protective coating material.

The present invention will be further described in detail with reference to examples for better understanding of the present invention to those skilled in the art.

Comparative example one:

Step 1, selecting a light flame-retardant abradable seal coating material with good erosion resistance in the prior art, and dividing the coating material into 7 samples with the same mass according to the first embodiment.

And 2 parts of the materials are placed in a barrel at the temperature of 20 ℃ and the state of the materials is monitored in real time so as to record the applicable period, 2 parts of the materials are selected from the remaining 5 parts, the tensile strength and the compressive strength of the materials are respectively detected, 1 part of the remaining 3 parts is selected to be smeared on metal, the bonding strength with the metal is detected, the remaining 2 parts are respectively smeared on two anti-erosion test dies, the thickness of the materials is 10mm, and the punching strength of the materials is detected in an anti-erosion test device. (data take average values).

Embodiment one:

The preparation method of the epoxy resin component comprises the steps of weighing 50 parts by mass of E51 epoxy resin, 50 parts by mass of glycidyl phthalate epoxy resin, 10 parts by mass of epoxy-terminated liquid nitrile rubber, 3 parts by mass of fumed silica, 3 parts by mass of soluble castor oil, 2 parts by mass of coupling agent (KH-550) and 60 parts by mass of cast stone powder by an electronic scale, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts by mass of silicon carbide fine sand below 100 meshes, stirring for 2min, discharging, and packaging to obtain the epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 50 parts by mass of polyamide curing agent, 50 parts by mass of modified fatty amine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of coupling agent (KH-550) by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 100 parts by mass of cast stone powder, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 3:4 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 1).

Embodiment two:

The preparation method of the epoxy resin component comprises the steps of weighing 50 parts by mass of E51 epoxy resin, 50 parts by mass of glycidyl phthalate epoxy resin, 10 parts by mass of epoxy-terminated liquid nitrile rubber, 3 parts by mass of fumed silica, 3 parts by mass of soluble castor oil, 2 parts by mass of coupling agent (KH-550) and 60 parts by mass of cast stone powder by an electronic scale, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts by mass of silicon carbide fine sand below 100 meshes, stirring for 2min, discharging, and packaging to obtain the epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 50 parts by mass of polyamide curing agent, 50 parts by mass of modified fatty amine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of coupling agent (KH-550) by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 100 parts by mass of cast stone powder, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 1:1 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 1).

Embodiment III:

The preparation method of the epoxy resin component comprises the steps of weighing 50 parts by mass of E51 epoxy resin, 50 parts by mass of glycidyl phthalate epoxy resin, 10 parts by mass of epoxy-terminated liquid nitrile rubber, 3 parts by mass of fumed silica, 3 parts by mass of soluble castor oil, 2 parts by mass of coupling agent (KH-550) and 60 parts by mass of cast stone powder by an electronic scale, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts by mass of silicon carbide fine sand below 100 meshes, stirring for 2min, discharging, and packaging to obtain the epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 50 parts by mass of polyamide curing agent, 50 parts by mass of modified fatty amine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of coupling agent (KH-550) by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 100 parts by mass of cast stone powder, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 3:1 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 1).

Embodiment four:

step 1, preparing an epoxy resin component, namely weighing E51 epoxy resin 50 by an electronic scale

The epoxy resin composition comprises, by mass, 50 parts of glycidyl phthalate epoxy resin, 10 parts of epoxy-terminated liquid nitrile rubber, 3 parts of fumed silica, 3 parts of soluble castor oil, 2 parts of a coupling agent (KH-550) and 60 parts of cast stone powder, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts of silicon carbide fine sand below 100 meshes, stirring for 2min, discharging, and packaging to obtain an epoxy resin component.

Step 2, preparing amine curing agent components, namely weighing polyamide curing agent 50 by an electronic scale

Adding 50 parts by mass of modified fatty amine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of coupling agent (KH-550) into a stirring kettle, and dispersing at high speed for 20min;

And adding 100 parts by mass of cast stone powder, stirring at medium and low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 5:1 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 1).

Fifth embodiment:

step 1, preparing an epoxy resin component, namely weighing E51 epoxy resin 50 by an electronic scale

The epoxy resin composition comprises, by mass, 50 parts of glycidyl phthalate epoxy resin, 10 parts of epoxy-terminated liquid nitrile rubber, 3 parts of fumed silica, 3 parts of soluble castor oil, 2 parts of a coupling agent (KH-550) and 60 parts of cast stone powder, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts of silicon carbide fine sand below 100 meshes, stirring for 2min, discharging, and packaging to obtain an epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 50 parts by mass of polyamide curing agent, 50 parts by mass of modified fatty amine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of coupling agent (KH-550) by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 100 parts by mass of cast stone powder, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 6:1 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 1).

TABLE 1 detection results

The tensile strength, the compressive strength and the punching strength of the second embodiment to the fourth embodiment are not lower than 14MPa, 70MPa and 4 h/(g/cm ²) of the first comparative embodiment, so that the mass ratio of the epoxy resin component to the amine curing agent component is proved to be improved when the mass ratio is (1-5): 1, the tensile strength, the compressive strength and the punching strength are improved, the tensile strength of the fourth comparative embodiment is improved by 42.9 percent, the compressive strength is improved by 44.3 percent, the punching strength is improved by 150 percent, and the best effect is proved when the mass ratio of the epoxy resin component to the amine curing agent component is 5:1.

Example six

The preparation method of the epoxy resin component comprises the steps of weighing 40 parts by mass of polyether bisphenol AE44 epoxy resin, 60 parts by mass of glycidyl phthalate epoxy resin, 3 parts by mass of fumed silica, 3 parts by mass of soluble castor oil and 2 parts by mass of diethylenetriamine methyl triethoxymethyl silane by using an electronic scale, placing the materials into a stirring kettle, stirring at a high speed for 20min, adding 100 parts by mass of silicon carbide fine sand below 100 meshes, 200 parts by mass of silicon carbide middle sand and 50 parts by mass of silicon carbide coarse sand, stirring for 2min, discharging and packaging to obtain the epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 40 parts by mass of a phenolic amine curing agent, 60 parts by mass of a polyamide polyamine curing agent, 5 parts by mass of organic bentonite, 3 parts by mass of ethanol and 1 part by mass of diethylenetriamine methyl triethoxymethyl silane by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 100 parts by mass of cast stone powder, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 100:20 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 2).

Example seven

The preparation method of the epoxy resin component comprises the steps of weighing 60 parts by mass of polyether bisphenol AE44 epoxy resin, 40 parts by mass of tetrahydrophthalic acid glycidyl ester, 4 parts by mass of fumed silica, 3 parts by mass of soluble castor oil and 2 parts by mass of coupling agent (B-201) by using an electronic scale, placing the components into a stirring kettle, stirring at a high speed for 20min, adding 40 parts by mass of quartz powder below 100 meshes and 150 parts by mass of glass flakes, stirring for 2min, discharging and packaging to obtain the epoxy resin component.

And 2, preparing an amine curing agent component, namely weighing 70 parts by mass of a polyamide curing agent, 30 parts by mass of a modified aliphatic curing agent, 4 parts by mass of organic bentonite, 5 parts by mass of ethanol and 1 part by mass of a coupling agent (B-201) by using an electronic scale, adding the components into a stirring kettle, dispersing at a high speed for 20min, adding 80 parts by mass of glass flakes, stirring at a medium-low speed for 5min, and barreling to obtain the amine curing agent component.

And step 3, uniformly mixing the obtained epoxy resin component and the amine curing agent component according to the mass ratio of 100:20 to obtain the water pump erosion protective coating material.

And 4, dividing the water pump erosion protective coating material into 7 parts, placing 2 parts of the water pump erosion protective coating material in a barrel at the temperature of 20 ℃ and monitoring the state of the water pump erosion protective coating material in real time so as to record the applicable period, selecting 2 parts from the rest 5 parts, respectively detecting the tensile strength and the compressive strength of the water pump erosion protective coating material, selecting 1 part from the rest 3 parts, smearing the water pump erosion protective coating material on metal, detecting the bonding strength with the metal, respectively smearing the rest 2 parts on two erosion test dies with the thickness of 10mm, and detecting the erosion strength of the water pump erosion protective coating material in an erosion test device. (data take average values) and recorded (test results are shown in Table 2).

TABLE 2 detection results

The tensile strength, compressive strength, and metal bond strength of example IV and example III are all higher than the tensile strength, compressive strength, and metal bond strength of comparative example I by 14MPa, 70MPa, and 4 h/(g/cm 2), the tensile strength of comparative example IV, example VI, and example III is at most 20MPa, the tensile strength of example IV is increased by 5.3%, 17.6%, and 42.9%, the compressive strength of example IV is at most 100MPa, the compressive strength of example IV is increased by 17.6%, 11.1%, and 42.9%, the impact strength of example IV is increased by 10 h/(g/cm 2), the impact strength of example IV, example VI, and comparative example I is increased by 25%, 11.1%, and 150%, and the metal bond strength of example IV, example VI, and example III is increased by 17.6%, and comparative example I is increased. As is clear from comparison, the preparation method and the mass ratio of the fourth embodiment have the best effect.

The above embodiments only show the way of arranging the device of the present application, which is described in more detail and is not to be construed as limiting the scope of the claims, it should be pointed out that several modifications and improvements can be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the present application, which is therefore subject to the appended claims.

Claims (10)

1. The pump body anti-abrasion protective coating material is characterized by being prepared by mixing an epoxy resin component and an amine curing agent component according to the mass ratio of (1-5): 1, wherein:

The epoxy resin component comprises composite epoxy resin, a first auxiliary agent and a first filling material, wherein the mass ratio is 100 (17-35) (100-350);

The amine curing agent comprises a composite amine curing agent, a second auxiliary agent and a second filling material, wherein the mass ratio of the amine curing agent to the second filling material is 100 (4-11) (50-100).

2. The pump body anti-abrasion protective coating material according to claim 1, wherein the composite epoxy resin is formed by mixing (20-100) of glycidyl ether epoxy resin and epoxy resin in glycidyl ester epoxy resin, the mixing ratio by mass is 100, the glycidyl ether epoxy resin comprises any one of E51 and E44 epoxy resin, and the glycidyl ester epoxy resin comprises any one of glycidyl phthalate and tetrahydroglycidyl phthalate.

3. The pump body anti-abrasion protective coating material according to claim 2, wherein the first auxiliary agent comprises a rheological agent, a toughening agent and a coupling agent, the mass ratio of the rheological agent to the toughening agent to the coupling agent is (5-10): (10-20): (2-5), the rheological agent is fumed silica and soluble castor oil, the toughening agent is a reactive elastomer, and the coupling agent is a silane coupling agent.

4. The pump body abrasion resistant protective coating material of claim 3, wherein the reactive elastomer is any one of an epoxy terminated nitrile rubber and a reactive polyurethane.

5. The pump body abrasion-resistant protective coating material according to claim 3, wherein the silane coupling agent is any one of a coupling agent KH-550, a coupling agent B-201 and diethylenetriamine methyl triethoxymethyl silane.

6. The pump body abrasion resistant protective coating material according to claim 5, wherein the first filler is a graded abrasion resistant particle mixed filler composed of a mixture of quartz powder, cast stone powder, quartz sand, silicon carbide, quartz glass beads, glass flakes.

7. The pump body anti-abrasion protective coating material according to claim 1, wherein the composite amine curing agent is formed by mixing one or more modified polyamines and polyamide-polyamines, wherein the modified polyamine is any one of modified aliphatic polyamines and phenolic amine.

8. The pump body anti-abrasion protective coating material according to claim 1, wherein the second auxiliary agent comprises an anti-settling agent and a coupling agent, the mass ratio is (3-8): 1-3, the anti-settling agent is organic bentonite, and the coupling agent is a silane coupling agent.

9. The pump body anti-abrasion protective coating material according to claim 1, wherein the second filler comprises any one of quartz powder and cast stone powder.

10. A method for preparing the pump body anti-abrasion protective coating material according to any one of claims 1 to 9, comprising the following steps:

s10, preparing an epoxy resin component;

s11, mixing the epoxy resin, the first auxiliary agent and the first filling material with 100 meshes or more, and stirring at a high speed for 20min, wherein the stirring speed is not lower than 25m/s;

S12, adding a first filling material below 100 meshes, and stirring at a medium-low speed for 2min at a stirring speed of about 10 m/s;

s13, obtaining an epoxy resin component;

s20, preparing an amine curing agent component:

S21, mixing the composite curing agent and the second auxiliary agent, and stirring at a high speed for 20min, wherein the stirring speed is not lower than 25m/s;

s22, adding a second filling material, and stirring at a medium-low speed for 5min at a stirring speed of about 10 m/s;

S23, obtaining an amine curing agent group;

s30, mixing the prepared epoxy resin component with an amine curing agent component according to the mass ratio of (1-5): 1 to obtain the pump body anti-abrasion protective coating material.