Application of modified epoxy resin composite material in stainless steel plate

Abstract

The invention discloses an application of a modified epoxy resin composite material in a stainless steel plate, and the modified epoxy resin composite material comprises a modified epoxy resin material body, the modified epoxy resin material body comprises an epoxy resin body, a curing agent, a diluent and a filler, the epoxy resin body comprises 15-30 parts of amine cured epoxy resin, 15-30 parts of gradient porous helical carbon fiber foam, 15-30 parts of hydroxyethyl ether and 15-30 parts of barking resin, the amine cured epoxy resin and the hydroxyethyl ether are arranged in the epoxy resin body, when the epoxy resin composite material is recycled, an ammonium ceric nitrate aqueous solution is used as an oxidation system, and the epoxy resin composite material is recycled. The amine-cured epoxy resin is completely degraded, the degradation rate can reach 99% within 1 h at the temperature of 60 DEG C, and a degradation product is insoluble in a reaction system, is directly filtered and separated out and is used as an adhesive again; and the hydroxyethyl ether unit plays an important role in the degradation process, so that the recovery efficiency of the epoxy resin material is improved, and the use cost of the epoxy resin material is reduced.

Description

Technical Field

[0001] This invention relates to the field of stainless steel sheet technology, specifically to the application of modified epoxy resin composite materials in stainless steel sheets. Background Technology

[0002] Epoxy resin is a thermosetting resin composed of epoxy resin and a curing agent. It is stable, has high hardness, good mechanical strength, and excellent chemical resistance and heat resistance, making it a commonly used functional coating material.

[0003] After being coated with epoxy resin, stainless steel surfaces can be effectively protected against corrosion. The epoxy resin coating has excellent anti-corrosion properties, resisting the erosion of chemicals such as acids, alkalis, and salts, thus protecting the stainless steel surface from corrosion damage. Epoxy resin can also be used to improve the wear resistance of stainless steel. After coating, a hard coating is formed on the stainless steel surface, which has strong wear resistance and fatigue resistance, and can extend the service life of stainless steel to a certain extent. Epoxy resin can form a uniform coating on the stainless steel surface, and colors can be mixed to change the original appearance of the stainless steel, making it more beautiful and decorative.

[0004] However, traditional epoxy resins have the following disadvantages:

[0005] Traditional epoxy resin is a disposable material that cannot be processed again. Used epoxy resin composites cannot be recycled, which increases their usage cost. Summary of the Invention

[0006] The purpose of this invention is to provide the application of modified epoxy resin composite materials in stainless steel sheets, so as to solve the problem mentioned in the background art that traditional epoxy resin is a disposable material that cannot be processed again, and epoxy resin composite materials cannot be recycled after use, which increases its usage cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modified epoxy resin composite material, comprising a ring-modified epoxy resin material body, wherein the modified epoxy resin material body comprises an epoxy resin body, a curing agent, a diluent, and a filler, wherein the epoxy resin body is composed of the following components: by weight, 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether, and 15-30 parts of uranium resin, wherein the curing agent comprises the following... The components are: by weight, 20-40 parts dicyandiamide, 20-40 parts stannous chloride, and 20-40 parts m-phenylenediamine; the diluent is composed of the following components: by weight, 30-60 parts butanol and 30-60 parts acetone; the filler is composed of the following components: by weight, 15-30 parts chitosan fiber, 15-30 parts glass fiber, 15-30 parts mica powder, 15-30 parts graphite powder, and 15-30 parts corundum.

[0008] As a preferred embodiment of the present invention, the epoxy resin body comprises the following components: by weight, 15 parts of amine-cured epoxy resin, 30 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 30 parts of uranium resin; the curing agent comprises the following components: by weight, 20 parts of dicyandiamide imine, 40 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 40 parts of butanol and 60 parts of acetone; and the filler comprises the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 30 parts of mica powder, 15 parts of graphite powder, and 25 parts of corundum.

[0009] As a preferred embodiment of the present invention, the epoxy resin body comprises the following components: by weight, 15 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 30 parts of hydroxyethyl ether, and 30 parts of uranium resin; the curing agent comprises the following components: by weight, 40 parts of dicyandiamide imine, 40 parts of stannous chloride, and 20 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 50 parts of butanol and 50 parts of acetone; and the filler comprises the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 30 parts of corundum.

[0010] As a preferred embodiment of the present invention, the epoxy resin body comprises the following components: by weight, 25 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 25 parts of uranium resin; the curing agent comprises the following components: by weight, 40 parts of dicyandiamide imine, 20 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 45 parts of butanol and 55 parts of acetone; and the filler comprises the following components: by weight, 20 parts of chitosan fiber, 20 parts of glass fiber, 20 parts of mica powder, 20 parts of graphite powder, and 20 parts of corundum.

[0011] As a preferred embodiment of the present invention, the epoxy resin body comprises the following components: by weight, 30 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 20 parts of uranium resin; the curing agent comprises the following components: by weight, 30 parts of dicyandiamide imine, 30 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 48 parts of butanol and 52 parts of acetone; and the filler comprises the following components: by weight, 20 parts of chitosan fiber, 25 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 15 parts of corundum.

[0012] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0013] Step 1: Preparation of slurry: Weigh 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether and 15-30 parts of uranium resin to prepare epoxy resin slurry.

[0014] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0015] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0016] As a preferred technical solution of the present invention, the specific process of preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 20-40 parts of dicyandiamide, 20-40 parts of stannous chloride and 20-40 parts of m-phenylenediamine and quantify them; S2, Making up the volume of the solution: Use a container to make up the volume of water.

[0017] S3. Concentration Preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water used to bring the container to volume. The specific process of preparing the diluent in step two is as follows: S1. Weighing Materials: Weigh 30-60 parts of butanol and 30-60 parts of acetone and quantify them; S2. Volume Adjustment: Use a container to bring the water to volume; S3. Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water used to bring the container to volume. The specific process of preparing the filler in step two is as follows: S1. Weighing Materials: Weigh 15-30 parts of chitosan fiber, 15-30 parts of glass fiber, 15-30 parts of mica powder, 15-30 parts of graphite powder, and 15-30 parts of corundum and quantify them; S2. Volume Adjustment: Use a container to bring the water to volume; S3. Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water used to bring the container to volume.

[0018] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0019] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0020] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0021] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0022] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0023] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This epoxy resin compound contains amine-cured epoxy resin and hydroxyethyl ether. When recycling epoxy resin composites, cerium ammonium nitrate aqueous solution is used as the oxidation system to achieve complete degradation of the amine-cured epoxy resin. At 60°C, a degradation rate of 99% is achieved in just 1 hour. The degradation products are insoluble in the reaction system and can be directly filtered and separated for reuse as an adhesive. Furthermore, the hydroxyethyl ether unit plays an important role in the degradation process, improving the recycling efficiency of epoxy resin materials and reducing their usage costs.

[0026] 2. The filler is supplemented with glass fiber to improve toughness and impact resistance, mica powder to increase the insulation performance of epoxy resin, graphite powder to improve the wear resistance and lubrication performance of epoxy resin, and corundum to improve the wear resistance of epoxy resin, thereby improving the overall performance of epoxy resin composite materials. Attached Figure Description

[0027] Figure 1 This is a flowchart of the present invention;

[0028] Figure 2 This is a flowchart illustrating the preparation process of the curing agent of the present invention;

[0029] Figure 3 This is a flowchart illustrating the preparation process of the diluent of the present invention;

[0030] Figure 4 This is a flowchart illustrating the preparation process of the filler material of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] Please see Figure 1-5 This invention provides the application of modified epoxy resin composite materials in stainless steel sheets, comprising a modified epoxy resin material body, which includes an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is composed of the following components: by weight, 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether, and 15-30 parts of uranium resin. The curing agent comprises the following components... Made from: by weight, 20-40 parts dicyandiamide, 20-40 parts stannous chloride and 20-40 parts m-phenylenediamine; the diluent is made from the following components: by weight, 30-60 parts butanol and 30-60 parts acetone; the filler is made from the following components: by weight, 15-30 parts chitosan fiber, 15-30 parts glass fiber, 15-30 parts mica powder, 15-30 parts graphite powder and 15-30 parts corundum.

[0035] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0036] Step 1: Preparation of slurry: Weigh 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether and 15-30 parts of uranium resin to prepare epoxy resin slurry.

[0037] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0038] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0039] The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 20-40 parts of dicyandiamide, 20-40 parts of stannous chloride, and 20-40 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 30-60 parts of butanol and 30-60 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water added to the container. S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of filler preparation in step two is as follows: S1, Weighing Materials: Weigh 15-30 parts of chitosan fiber, 15-30 parts of glass fiber, 15-30 parts of mica powder, 15-30 parts of graphite powder and 15-30 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

[0040] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0041] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0042] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0043] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0044] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0045] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0046] Example 2:

[0047] Please see Figure 1-5 This invention provides the application of modified epoxy resin composite materials in stainless steel sheets, including a modified epoxy resin material body. The modified epoxy resin material body includes an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is made of the following components: by weight, 15 parts of amine-cured epoxy resin, 30 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 30 parts of uranium resin. The curing agent is made of the following components: by weight, 20 parts of dicyandiamide imine, 40 parts of stannous chloride, and 40 parts of m-phenylenediamine. The diluent is made of the following components: by weight, 40 parts of butanol and 60 parts of acetone. The filler is made of the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 30 parts of mica powder, 15 parts of graphite powder, and 25 parts of corundum.

[0048] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0049] Step 1: Preparation of slurry: Weigh 15 parts of amine-cured epoxy resin, 30 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether and 30 parts of uranium resin to prepare epoxy resin slurry;

[0050] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0051] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0052] The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 20 parts of dicyandiamide imine, 40 parts of stannous chloride, and 40 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 40 parts of butanol and 60 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water added to the container. S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of filler preparation in step two is as follows: S1, Weighing Materials: Weigh 15 parts of chitosan fiber, 15 parts of glass fiber, 30 parts of mica powder, 15 parts of graphite powder and 25 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

[0053] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0054] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0055] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0056] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0057] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0058] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0059] Example 3:

[0060] Please see Figure 1-5This invention provides the application of modified epoxy resin composite materials in stainless steel sheets, including a modified epoxy resin material body. The modified epoxy resin material body includes an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is made of the following components: by weight, 15 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 30 parts of hydroxyethyl ether, and 30 parts of uranium resin. The curing agent is made of the following components: by weight, 40 parts of dicyandiamide imine, 40 parts of stannous chloride, and 20 parts of m-phenylenediamine. The diluent is made of the following components: by weight, 50 parts of butanol and 50 parts of acetone. The filler is made of the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 30 parts of corundum.

[0061] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0062] Step 1: Preparation of slurry: Weigh 15 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 30 parts of hydroxyethyl ether and 30 parts of uranium resin to prepare epoxy resin slurry;

[0063] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0064] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0065] The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 40 parts of dicyandiamide, 40 parts of stannous chloride, and 20 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 50 parts of butanol and 50 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water added to the container. S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of filler preparation in step two is as follows: S1, Weighing Materials: Weigh 15 parts of chitosan fiber, 15 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder and 30 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

[0066] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0067] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0068] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0069] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0070] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0071] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0072] Example 4:

[0073] Please see Figure 1-5 This invention provides the application of modified epoxy resin composite materials in stainless steel sheets, including a modified epoxy resin material body. The modified epoxy resin material body includes an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is made of the following components: by weight, 25 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 25 parts of uranium resin. The curing agent is made of the following components: by weight, 40 parts of dicyandiamide imine, 20 parts of stannous chloride, and 40 parts of m-phenylenediamine. The diluent is made of the following components: by weight, 45 parts of butanol and 55 parts of acetone. The filler is made of the following components: by weight, 20 parts of chitosan fiber, 20 parts of glass fiber, 20 parts of mica powder, 20 parts of graphite powder, and 20 parts of corundum.

[0074] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0075] Step 1: Preparation of slurry: Weigh 25 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether and 25 parts of uranium resin to prepare epoxy resin slurry;

[0076] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0077] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0078] The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 40 parts of dicyandiamide, 20 parts of stannous chloride, and 40 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 45 parts of butanol and 55 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water added to the container. S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of filler preparation in step two is as follows: S1, Weighing Materials: Weigh 20 parts of chitosan fiber, 20 parts of glass fiber, 20 parts of mica powder, 20 parts of graphite powder and 20 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

[0079] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0080] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0081] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0082] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0083] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0084] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0085] Example 5:

[0086] Please see Figure 1-5This invention provides the application of modified epoxy resin composite materials in stainless steel sheets, including a modified epoxy resin material body. The modified epoxy resin material body includes an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is composed of the following components: by weight, 30 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 20 parts of uranium resin. The curing agent is composed of the following components: by weight, 30 parts of dicyandiamide imine, 30 parts of stannous chloride, and 40 parts of m-phenylenediamine. The diluent is composed of the following components: by weight, 48 parts of butanol and 52 parts of acetone. The filler is composed of the following components: by weight, 20 parts of chitosan fiber, 25 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 15 parts of corundum.

[0087] The preparation method of the modified epoxy resin composite material of the present invention includes the following steps:

[0088] Step 1: Preparation of slurry: Weigh 30 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether and 20 parts of uranium resin to prepare epoxy resin slurry;

[0089] Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material;

[0090] Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

[0091] The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 30 parts of dicyandiamide, 30 parts of stannous chloride, and 40 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 48 parts of butanol and 52 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water added to the container. S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of filler preparation in step two is as follows: S1, Weighing Materials: Weigh 20 parts of chitosan fiber, 25 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder and 15 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

[0092] The application of the modified epoxy resin composite material of the present invention in stainless steel sheets includes the following steps:

[0093] Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface.

[0094] Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate.

[0095] Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother.

[0096] Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating.

[0097] Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

[0098] In this invention, 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether, and 15-30 parts of furan resin are weighed to prepare an epoxy resin slurry; 20-40 parts of dicyandiamide, 20-40 parts of stannous chloride, and 20-40 parts of m-phenylenediamine are weighed and quantitatively determined; water is added to the container to make up the volume; and the concentration of the curing agent is adjusted according to the weighed mass and the amount of water added to the container. Weigh out 30-60 parts butanol and 30-60 parts acetone and measure their quantities; dilute the water to the required volume using a container; adjust the concentration of the diluent according to the weighed quantities and the amount of water added to the container; weigh out 15-30 parts chitosan fiber, 15-30 parts glass fiber, 15-30 parts mica powder, 15-30 parts graphite powder, and 15-30 parts corundum and measure their quantities; dilute the water to the required volume using a container; adjust the concentration of the diluent according to the weighed quantities and the amount of water added to the container. The concentration of filler is adjusted, and the curing agent, diluent, and filler are added dropwise to the prepared epoxy resin slurry to form a uniform mixture. After degassing the material, it is cured and molded. The surface of the stainless steel plate to be coated is sandblasted and degreased to ensure that the primer adheres firmly to the surface. A primer is then applied to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate. After the primer dries, an intermediate coat is applied. The material and process of the intermediate coat are selected according to the actual situation to make the overall coating stronger and the surface smoother. After the intermediate coat dries, a top coat is applied. One or two coats of high-quality epoxy modified resin material are applied to the top coat, with the thickness controlled at 200μm, to make the coating smooth and uniform. The coated stainless steel plate is placed at room temperature for natural curing or oven curing. During the curing process, external impact and scratches should be avoided. After curing, it can be put into use after a period of time.

[0099] In this invention, acetone is one of the commonly used epoxy resin diluents. It accelerates the curing speed of epoxy resin and shortens its processing time. Butanol is a green and environmentally friendly diluent with low toxicity, low volatility, and low odor, which effectively improves the rheological properties of epoxy resin.

[0100] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A modified epoxy resin composite material, comprising a ring-modified epoxy resin material body, characterized in that: The modified epoxy resin material comprises an epoxy resin body, a curing agent, a diluent, and a filler. The epoxy resin body is composed of the following components: by weight, 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether, and 15-30 parts of uranium resin. The curing agent is composed of the following components: by weight, 20-40 parts of dicyandiamide imine, 20-40 parts of stannous chloride, and 20-40 parts of m-phenylenediamine. The diluent is composed of the following components: by weight, 30-60 parts of butanol and 30-60 parts of acetone. The filler is composed of the following components: by weight, 15-30 parts of chitosan fiber, 15-30 parts of glass fiber, 15-30 parts of mica powder, 15-30 parts of graphite powder, and 15-30 parts of corundum.

2. The modified epoxy resin composite material according to claim 1, characterized in that: The epoxy resin body comprises the following components: by weight, 15 parts of amine-cured epoxy resin, 30 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 30 parts of uranium resin; the curing agent comprises the following components: by weight, 20 parts of dicyandiamide imine, 40 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 40 parts of butanol and 60 parts of acetone; and the filler comprises the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 30 parts of mica powder, 15 parts of graphite powder, and 25 parts of corundum.

3. The modified epoxy resin composite material according to claim 1, characterized in that: The epoxy resin body comprises the following components: by weight, 15 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 30 parts of hydroxyethyl ether, and 30 parts of uranium resin; the curing agent comprises the following components: by weight, 40 parts of dicyandiamide imine, 40 parts of stannous chloride, and 20 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 50 parts of butanol and 50 parts of acetone; and the filler comprises the following components: by weight, 15 parts of chitosan fiber, 15 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 30 parts of corundum.

4. The modified epoxy resin composite material according to claim 1, characterized in that: The epoxy resin body comprises the following components: by weight, 25 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 25 parts of uranium resin; the curing agent comprises the following components: by weight, 40 parts of dicyandiamide imine, 20 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 45 parts of butanol and 55 parts of acetone; and the filler comprises the following components: by weight, 20 parts of chitosan fiber, 20 parts of glass fiber, 20 parts of mica powder, 20 parts of graphite powder, and 20 parts of corundum.

5. The modified epoxy resin composite material according to claim 1, characterized in that: The epoxy resin body comprises the following components: by weight, 30 parts of amine-cured epoxy resin, 25 parts of gradient porous spiral carbon fiber foam, 25 parts of hydroxyethyl ether, and 20 parts of uranium resin; the curing agent comprises the following components: by weight, 30 parts of dicyandiamide imine, 30 parts of stannous chloride, and 40 parts of m-phenylenediamine; the diluent comprises the following components: by weight, 48 parts of butanol and 52 parts of acetone; and the filler comprises the following components: by weight, 20 parts of chitosan fiber, 25 parts of glass fiber, 15 parts of mica powder, 25 parts of graphite powder, and 15 parts of corundum.

6. The method for preparing the modified epoxy resin composite material according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Preparation of slurry: Weigh 15-30 parts of amine-cured epoxy resin, 15-30 parts of gradient porous spiral carbon fiber foam, 15-30 parts of hydroxyethyl ether and 15-30 parts of uranium resin to prepare epoxy resin slurry. Step 2, material mixing: Add curing agent, diluent and filler dropwise to the prepared epoxy resin slurry and mix them evenly to form a material; Step 3: Curing and shaping: After removing air bubbles from the material, it is cured and shaped.

7. The application of the modified epoxy resin composite material according to claim 1 in stainless steel sheets, characterized in that: The specific process for preparing the curing agent in step two is as follows: S1, Weighing materials: Weigh 20-40 parts of dicyandiamide, 20-40 parts of stannous chloride, and 20-40 parts of m-phenylenediamine and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration preparation: Adjust the concentration of the curing agent according to the weighed mass and the amount of water added to the container; The specific process for preparing the diluent in step two is as follows: S1, Weighing materials: Weigh 30-60 parts of butanol and 30-60 parts of acetone and measure them quantitatively; S2, Solution volume adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the diluent according to the weighed mass and the amount of water in the container; The specific process of preparing the filler in step two is as follows: S1, Weighing Materials: Weigh 15-30 parts of chitosan fiber, 15-30 parts of glass fiber, 15-30 parts of mica powder, 15-30 parts of graphite powder and 15-30 parts of corundum and quantify them; S2, Solution Volume Adjustment: Use a container to adjust the volume of water; S3, Concentration Preparation: Adjust the concentration of the filler according to the weighed mass and the amount of water in the container.

8. The application of the modified epoxy resin composite material according to any one of claims 1-5 in stainless steel sheets, characterized in that, Includes the following steps: Step 1: Surface treatment: Sandblast and degrease the surface of the stainless steel sheet to be coated to ensure that the primer adheres firmly to the surface. Step 2, Primer Coating: Apply primer to the treated stainless steel plate. The primer improves the adhesion of the entire coating and protects the stainless steel plate. Step 3, Intermediate Coat: After the primer has dried, an intermediate coat is applied. The materials and processes for the intermediate coat are selected according to the actual situation to make the entire coating stronger and the surface smoother. Step 4, Topcoat: After the intermediate coat dries, apply the topcoat using a high-quality ring-modified epoxy resin body coating. Apply one or two coats of topcoat with a thickness controlled at 200μm to ensure a smooth and uniform coating. Step 5: Curing: Place the coated stainless steel sheet at room temperature for natural curing or use an oven for curing. Avoid external impacts and scratches during the curing process. After curing, let it air dry for a period of time before putting it into use.

Images