Oil-resistant and corrosion-resistant environment-friendly rubber plate and preparation method thereof

Abstract

The application discloses an oil-resistant and corrosion-resistant environment-friendly rubber plate and a preparation method thereof, and relates to the technical field of rubber plates, which comprises the following components in parts by weight: 50 parts of natural rubber, 20-45 parts of chloroprene rubber, 20-45 parts of nitrile rubber, 100-200 parts of hydrogen, 50-100 parts of hexafluoropropylene, 1-4 parts of a catalyst, 1-2.5 parts of stearic acid, 4-5 parts of zinc oxide, 30-65 parts of carbon black, 1-3 parts of an accelerator, 1-2.5 parts of an antioxidant, 5-8 parts of a vulcanizing agent, 10-15 parts of a filler and 10-25 parts of a softening agent. The natural rubber, the chloroprene rubber and the nitrile rubber are designed, so that the rubber plate has good oil resistance and corrosion resistance, the problems of poor wear resistance, poor weather resistance and poor aging resistance of the rubber plate are solved, the mixing and molding processes are smoother, the tensile strength and wear resistance of the rubber plate are improved, the service life of the rubber plate is prolonged, and the economic benefits of the rubber plate are improved.

Description

Technical Field

[0001] This invention relates to the field of rubber sheet technology, specifically to an oil-resistant and corrosion-resistant environmentally friendly rubber sheet and its preparation method. Background Technology

[0002] With the increasing global awareness of environmental protection and the growing urgency for sustainable development, environmentally friendly rubber sheets have emerged as a green and environmentally friendly material. Environmentally friendly rubber sheets are designed to minimize environmental impact during production and use. In terms of material selection and properties, they typically use non-toxic or low-toxic raw materials to effectively avoid harm to workers and the environment. Furthermore, due to their excellent performance characteristics, environmentally friendly rubber sheets are widely used in various fields. In the construction sector, with the acceleration of urbanization and the booming real estate market, they are mainly used for floor paving, anti-slip, sound insulation, and heat insulation. In the industrial sector, due to their wear resistance, corrosion resistance, insulation, and sealing properties, they play an irreplaceable role in industries such as automotive, aviation, electronics, and machinery. Especially in the petroleum and chemical industries, critical parts of machinery require the use of oil-resistant rubber sheets for protection to prevent oil contamination and extend equipment lifespan.

[0003] Existing oil- and corrosion-resistant environmentally friendly rubber sheets perform well in terms of oil and corrosion resistance, but they still have some shortcomings. In terms of physical properties, their hardness is relatively low, which limits their application in scenarios that require high hardness and strength. At the same time, they may deform when used in extreme environments, affecting their performance and lifespan. Although these rubber sheets have a certain resistance to the erosion of grease and other chemicals, long-term exposure to such environments will lead to aging of the rubber sheets.

[0004] 1. Patent document CN106220933B discloses an environmentally friendly oil-resistant and flame-retardant rubber sheet and its preparation method. The above patent achieves excellent hardness, tensile strength and tear strength of the environmentally friendly oil-resistant and flame-retardant rubber sheet, significantly reduces the content of heavy metals and harmful organic substances, has no carcinogenic components, and significantly improves flame retardancy and oil resistance, fully meeting the requirements of environmental protection and high flame retardancy. However, the above patent cannot achieve the good oil resistance and corrosion resistance of the rubber sheet.

[0005] 2. Patent document CN114989509B discloses an environmentally friendly, oil-resistant, high-strength NBR rubber sheet and its preparation method. The above patent realizes that the environmentally friendly, oil-resistant, high-strength NBR rubber sheet is not only environmentally friendly, but also has very good oil resistance, mechanical properties and wear resistance. However, the above patent cannot achieve the function of destroying the unsaturated double bond structure inside the rubber.

[0006] 3. Patent document CN114656698B discloses a track rubber pad material and its preparation method. The above patent realizes the preparation of a rubber pad with excellent damping performance and meets the physical and mechanical properties of track pads by adding an organic polymer with 2,2'-methylene bis-(4-methyl-6-tert-butylphenol) end caps to nitrile rubber and cooperating with various additives. This significantly improves the ability to reduce track vibration and noise. However, the above patent cannot realize the function of fluorine atoms combining with carbon atoms to improve the stability of the rubber plate.

[0007] 4. Patent document CN115895126B discloses a foamed rubber pad and its preparation method. The above patent achieves matching of vulcanization and foaming speed, has a closed-cell structure with uniform cell size, simple production process, fast vulcanization speed, low cost and other characteristics. At the same time, it has excellent properties such as dimensional stability without shrinkage, high strength and stiffness stability. However, the above patent cannot achieve the function of stabilizing rubber molecular chains.

[0008] In summary, the aforementioned patents cannot achieve the functions of good oil resistance and corrosion resistance of rubber sheets, cannot achieve the function of destroying the unsaturated double bond structure inside the rubber, cannot achieve the function of combining fluorine atoms with carbon atoms to improve the stability of rubber sheets, and cannot achieve the function of stabilizing rubber molecular chains. This results in problems such as poor wear resistance, poor weather resistance, poor aging resistance, strong adsorption of oil media by the unsaturated double bond structure inside the rubber, poor resistance to chemical substances, poor stability in oil or solvent environments, decreased mechanical properties in high-temperature environments, and poor oxidation resistance of rubber sheets.

[0009] Therefore, this application proposes an oil-resistant and corrosion-resistant environmentally friendly rubber sheet and its preparation method, which can achieve good oil and corrosion resistance, disrupt the unsaturated double bond structure inside the rubber, combine fluorine atoms with carbon atoms to improve the stability of the rubber sheet, and stabilize the rubber molecular chain. Summary of the Invention

[0010] The purpose of this invention is to provide an oil- and corrosion-resistant environmentally friendly rubber sheet and its preparation method, in order to solve the technical problems mentioned in the background art, such as the inability to achieve good oil and corrosion resistance of the rubber sheet, the inability to destroy the unsaturated double bond structure inside the rubber, the inability to achieve the function of combining fluorine atoms with carbon atoms to improve the stability of the rubber sheet, and the inability to stabilize the rubber molecular chain. These problems result in poor wear resistance, poor weather resistance, poor aging resistance, strong adsorption of oil media by the unsaturated double bond structure inside the rubber, poor resistance to chemical substances, poor stability in oil or solvent environments, decreased mechanical properties in high-temperature environments, and poor oxidation resistance of the rubber sheet.

[0011] To achieve the above objectives, the present invention provides the following technical solution: an oil-resistant and corrosion-resistant environmentally friendly rubber sheet, comprising the following components by weight:

[0012] Natural rubber: 50 parts;

[0013] Chloroprene rubber: 20 parts to 45 parts;

[0014] Nitrile rubber: 20 parts to 45 parts;

[0015] Hydrogen: 100 to 200 parts;

[0016] Hexafluoropropylene: 50 to 100 parts;

[0017] Catalyst: 1 to 4 parts;

[0018] Stearic acid: 1 part to 2.5 parts;

[0019] Zinc oxide: 4 to 5 parts;

[0020] Carbon black: 30 parts to 65 parts;

[0021] Accelerator: 1 to 3 parts;

[0022] Anti-aging agent: 1 to 2.5 parts;

[0023] Vulcanizing agent: 5 to 8 parts;

[0024] Filler: 10 to 15 parts;

[0025] Softener: 10 to 25 parts;

[0026] The catalyst is a hydrazine hydrate, hydrogen peroxide, and copper ion catalytic system.

[0027] Preferably, the weight ratio of the chloroprene rubber to the nitrile rubber is 1:1.

[0028] Preferably, the accelerator is N-cycloethyl-2-benzothiazole sulfenamide.

[0029] Preferably, the antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0030] Preferably, the vulcanizing agent is sulfur.

[0031] Preferably, the filler is amorphous silicon dioxide.

[0032] Preferably, the softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0033] Preferably, the preparation method is as follows:

[0034] S1: Clean natural rubber, chloroprene rubber and nitrile rubber respectively. Dry natural rubber at 60℃ for 24 hours, chloroprene rubber at 40℃ for 24 hours, and nitrile rubber at 60℃ for 6 hours.

[0035] S2: Natural rubber, chloroprene rubber and nitrile rubber are respectively placed into an internal mixer for plasticizing;

[0036] S3: Add the plasticized natural rubber sheet, neoprene rubber sheet and nitrile rubber sheet into the internal mixer and mix evenly;

[0037] S4: Mix with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler and softener;

[0038] S5: Modified by adding hydrogen and catalyst;

[0039] S6: Modified by adding hexafluoropropylene;

[0040] S7: After modification, put the blended rubber into a flat vulcanizing machine, add vulcanizing agent, and vulcanize for 20 min to 30 min at a temperature of 140℃~170℃ and a pressure of 5MPa~15MPa. The rubber discharge temperature is 100℃~120℃.

[0041] S8: After cooling and curing, the rubber sheet is cleaned, trimmed and dried to obtain the finished rubber sheet;

[0042] Preferably, S4 is:

[0043] S41: Place the mixed rubber blend into a hydrogenation reactor;

[0044] S42: Add hydrogen and catalyst, and react for 8-10 hours in an environment with a temperature of 80-100℃ and a hydrogen pressure of 6.0-9.5MPa;

[0045] S43: After the hydrogenation reaction is completed, the blended rubber is cleaned and dried.

[0046] Preferably, S5 is:

[0047] S51: Place the hydrogenated blended rubber in an internal mixer;

[0048] S52: Add hexafluoropropylene and react in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa;

[0049] S53: After the fluorination reaction is completed, the blended rubber is cleaned and dried.

[0050] Compared with the prior art, the beneficial effects of the present invention are:

[0051] 1. This invention, by incorporating natural rubber, chloroprene rubber, and nitrile rubber, achieves excellent oil resistance and corrosion resistance in rubber sheets, solving the problems of poor wear resistance, poor weather resistance, and poor aging resistance in rubber sheets. It also makes the mixing and molding process smoother, improves the tensile strength and wear resistance of rubber sheets, extends the service life of rubber sheets, and improves the economic benefits of rubber sheets.

[0052] 2. This invention modifies the mixed rubber by incorporating hydrogen and a catalyst, thereby disrupting the unsaturated double bond structure within the rubber. This solves the problems of strong adsorption of oily media by the unsaturated double bond structure within the rubber and reduced rubber sheet performance. It can slow down the aging of the rubber sheet, improve its weather resistance, extend its service life, and enhance its oil resistance.

[0053] 3. This invention modifies the mixed rubber by incorporating hexafluoropropylene, thereby achieving the function of combining fluorine atoms with carbon atoms to improve the stability of the rubber sheet. It solves the problems of poor resistance to chemical substances, poor stability in oil or solvent environments, and decreased mechanical properties in high-temperature environments. This enables the rubber sheet to be used in high-temperature environments, improves the chemical resistance, oil resistance, and solvent resistance of the rubber sheet, and broadens the application scenarios of the rubber sheet.

[0054] 4. This invention, by using amorphous silica as a filler, achieves the function of stabilizing rubber molecular chains, solves the problems of poor stability, poor weather resistance, and poor oxidation resistance of rubber sheets, enhances the crosslinking density and network structure of rubber, slows down the oxidation and degradation process of rubber sheets, extends the service life of rubber sheets, and improves the environmental performance of rubber sheets. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the component composition of the present invention;

[0056] Figure 2 This is a schematic diagram illustrating the preparation process of the oil-resistant and corrosion-resistant environmentally friendly rubber sheet of the present invention.

[0057] Figure 3 This is a schematic diagram of the hydrogenation modification process of the present invention;

[0058] Figure 4 This is a schematic diagram of the fluorination modification process of the present invention. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 An oil- and corrosion-resistant environmentally friendly rubber sheet, comprising the following components in parts by weight:

[0061] Natural rubber: 50 parts;

[0062] Chloroprene rubber: 35 parts;

[0063] Nitrile rubber: 35 parts;

[0064] Hydrogen: 150 parts;

[0065] Hexafluoropropylene: 60 parts;

[0066] Catalyst: 2 parts;

[0067] Stearic acid: 1.5 parts;

[0068] Zinc oxide: 4 parts;

[0069] Carbon black: 45 parts;

[0070] Accelerator: 1 part;

[0071] Anti-aging agent: 1 part;

[0072] Vulcanizing agent: 6 parts;

[0073] Filler: 12 parts;

[0074] Softener: 15 parts;

[0075] The catalyst is a hydrazine hydrate, hydrogen peroxide and copper ion catalytic system;

[0076] The weight ratio of the chloroprene rubber to the nitrile rubber is 1:1;

[0077] The accelerator is N-cycloethyl-2-benzothiazole sulfenamide;

[0078] The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0079] The vulcanizing agent is sulfur;

[0080] The filler is amorphous silicon dioxide;

[0081] The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0082] The preparation method is as follows:

[0083] S1: Clean natural rubber, chloroprene rubber and nitrile rubber respectively. Dry natural rubber at 60℃ for 24 hours, chloroprene rubber at 40℃ for 24 hours, and nitrile rubber at 60℃ for 6 hours.

[0084] S2: Natural rubber, chloroprene rubber and nitrile rubber are respectively placed into an internal mixer for plasticizing;

[0085] S3: Add the plasticized natural rubber sheet, neoprene rubber sheet and nitrile rubber sheet into the internal mixer and mix evenly;

[0086] S4: Mix with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler and softener;

[0087] S5: Modified by adding hydrogen and catalyst;

[0088] S6: Modified by adding hexafluoropropylene;

[0089] S7: After modification, put the blended rubber into a flat vulcanizing machine, add vulcanizing agent, and vulcanize for 20 min to 30 min at a temperature of 140℃~170℃ and a pressure of 5MPa~15MPa. The rubber discharge temperature is 100℃~120℃.

[0090] S8: After cooling and curing, the rubber sheet is cleaned, trimmed and dried to obtain the finished rubber sheet;

[0091] S4 is:

[0092] S41: Place the mixed rubber blend into a hydrogenation reactor;

[0093] S42: Add hydrogen and catalyst, and react for 8-10 hours in an environment with a temperature of 80-100℃ and a hydrogen pressure of 6.0-9.5MPa;

[0094] S43: After the hydrogenation reaction is completed, the blended rubber is cleaned and dried;

[0095] S5 is:

[0096] S51: Place the hydrogenated blended rubber in an internal mixer;

[0097] S52: Add hexafluoropropylene and react in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa;

[0098] S53: After the fluorination reaction is completed, the blended rubber is cleaned and dried;

[0099] Further, prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃ for 6 hours. Plasticize the natural rubber in a mixer at 140℃ for 4 minutes, the chloroprene rubber in a mixer at 100℃ for 20 minutes, and the nitrile rubber in a mixer at 110℃ for 10 minutes. Plasticize the plasticized natural rubber sheets, chloroprene rubber sheets, and nitrile rubber sheets. The rubber sheet is added to an internal mixer along with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler, and softener. The mixing is carried out at a discharge temperature of 125°C. After being allowed to stand at room temperature, the blended rubber is placed in a hydrogen reactor with a catalyst and hydrogen gas introduced. The reaction is carried out for 8-10 hours at a hydrogen pressure of 6.0-9.5 MPa and a reaction temperature of 80-100°C. The hydrogenated blended rubber is then cleaned, dried, and placed back into the internal mixer. Hexafluoropropylene is added, and the mixture is modified at a temperature of 40-80°C and a pressure of 1-2.5 MPa. After modification, the mixture is allowed to stand at room temperature. The blended rubber is then placed in a flat vulcanizing machine with a vulcanizing agent added. The mixture is vulcanized for 20-30 minutes at a temperature of 140-170°C and a pressure of 5-15 MPa. The discharge temperature is 100-120°C, yielding the finished rubber sheet.

[0100] Control group 1: Natural rubber was removed, while other components remained unchanged, and a control experiment was conducted.

[0101] Control group 2: The chloroprene rubber was removed, while other components remained unchanged, and a control experiment was conducted.

[0102] Control group 3: Nitrile rubber was removed, while other components remained unchanged, and a control experiment was conducted.

[0103] Control group 4: The filler was removed, and other components remained unchanged, and a control experiment was conducted.

[0104] Example 2: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4An oil- and corrosion-resistant environmentally friendly rubber sheet, comprising the following components in parts by weight:

[0105] Natural rubber: 50 parts;

[0106] Chloroprene rubber: 35 parts;

[0107] Nitrile rubber: 35 parts;

[0108] Hydrogen: 150 parts;

[0109] Hexafluoropropylene: 60 parts;

[0110] Catalyst: 2 parts;

[0111] Stearic acid: 1.5 parts;

[0112] Zinc oxide: 4 parts;

[0113] Carbon black: 45 parts;

[0114] Accelerator: 1 part;

[0115] Anti-aging agent: 1 part;

[0116] Vulcanizing agent: 6 parts;

[0117] Filler: 12 parts;

[0118] Softener: 15 parts;

[0119] The catalyst is a hydrazine hydrate, hydrogen peroxide and copper ion catalytic system;

[0120] The weight ratio of the chloroprene rubber to the nitrile rubber is 1:1;

[0121] The accelerator is N-cycloethyl-2-benzothiazole sulfenamide;

[0122] The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0123] The vulcanizing agent is sulfur;

[0124] The filler is amorphous silicon dioxide;

[0125] The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0126] Further, prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃ for 6 hours. Plasticize the natural rubber in a mixer at 140℃ for 4 minutes, plasticize the chloroprene rubber in a mixer at 100℃ for 20 minutes, and plasticize the nitrile rubber in... The rubber was plasticized in a mixer at 110℃ for 10 minutes. The plasticized natural rubber sheets, chloroprene rubber sheets, and nitrile rubber sheets were then added to the mixer along with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler, and softener. The discharge temperature was 125℃. After being allowed to stand at room temperature, the rubber was placed back into the mixer and hexafluoropropylene was added. After modification in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa, the rubber was allowed to stand at room temperature. The blended rubber was then placed in a flat vulcanizing machine, and a vulcanizing agent was added. The rubber was vulcanized for 20 minutes~30 minutes at a temperature of 140℃~170℃ and a pressure of 5MPa~15MPa. The discharge temperature was 100℃~120℃, yielding the finished rubber sheet.

[0127] Example 3: Please refer to Figure 1 , Figure 2 and Figure 3 An oil- and corrosion-resistant environmentally friendly rubber sheet, comprising the following components in parts by weight:

[0128] Natural rubber: 50 parts;

[0129] Chloroprene rubber: 35 parts;

[0130] Nitrile rubber: 35 parts;

[0131] Hydrogen: 150 parts;

[0132] Hexafluoropropylene: 60 parts;

[0133] Catalyst: 2 parts;

[0134] Stearic acid: 1.5 parts;

[0135] Zinc oxide: 4 parts;

[0136] Carbon black: 45 parts;

[0137] Accelerator: 1 part;

[0138] Anti-aging agent: 1 part;

[0139] Vulcanizing agent: 6 parts;

[0140] Filler: 12 parts;

[0141] Softener: 15 parts;

[0142] The catalyst is a hydrazine hydrate, hydrogen peroxide and copper ion catalytic system;

[0143] The weight ratio of the chloroprene rubber to the nitrile rubber is 1:1;

[0144] The accelerator is N-cycloethyl-2-benzothiazole sulfenamide;

[0145] The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0146] The vulcanizing agent is sulfur;

[0147] The filler is amorphous silicon dioxide;

[0148] The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0149] Further, prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃ for 6 hours. Plasticize the natural rubber in a mixer at 140℃ for 4 minutes, the chloroprene rubber in a mixer at 100℃ for 20 minutes, and the nitrile rubber in a mixer at 110℃ for 10 minutes. The plasticized natural rubber sheets, chloroprene rubber sheets, and nitrile rubber sheets are added to a mixer, along with stearic acid, zinc oxide, carbon black, accelerators, antioxidants, fillers, and softeners. The mixing is carried out at a discharge temperature of 125°C. After being allowed to stand at room temperature, the blended rubber is placed in a hydrogen reactor with a catalyst and hydrogen gas is introduced. The reaction is carried out at a hydrogen pressure of 6.0 MPa to 9.5 MPa and a reaction temperature of 80°C to 100°C for 8 to 10 hours. After the hydrogenated blended rubber is cleaned, dried, and allowed to stand at room temperature, it is placed in a flat vulcanizing machine with a vulcanizing agent added. The vulcanization is carried out at a temperature of 140°C to 170°C and a pressure of 5 MPa to 15 MPa for 20 to 30 minutes. The discharge temperature is 100°C to 120°C, yielding the finished rubber sheet.

[0150] Example 4: Please refer to Figure 1 , Figure 2 and Figure 4 An oil- and corrosion-resistant environmentally friendly rubber sheet, comprising the following components in parts by weight:

[0151] Natural rubber: 50 parts;

[0152] Chloroprene rubber: 35 parts;

[0153] Nitrile rubber: 35 parts;

[0154] Hydrogen: 150 parts;

[0155] Hexafluoropropylene: 60 parts;

[0156] Catalyst: 2 parts;

[0157] Stearic acid: 1.5 parts;

[0158] Zinc oxide: 4 parts;

[0159] Carbon black: 45 parts;

[0160] Accelerator: 1 part;

[0161] Anti-aging agent: 1 part;

[0162] Vulcanizing agent: 6 parts;

[0163] Filler: 12 parts;

[0164] Softener: 15 parts;

[0165] The catalyst is a hydrazine hydrate, hydrogen peroxide and copper ion catalytic system;

[0166] The weight ratio of the chloroprene rubber to the nitrile rubber is 1:1;

[0167] The accelerator is N-cycloethyl-2-benzothiazole sulfenamide;

[0168] The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0169] The vulcanizing agent is sulfur;

[0170] The filler is amorphous silicon dioxide;

[0171] The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0172] Further, prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃ for 6 hours. Plasticize the natural rubber in a mixer at 140℃ for 4 minutes. Put the chloroprene rubber into... Plasticize the rubber in a mixer at 100℃ for 20 minutes. Then, plasticize the nitrile rubber in a mixer at 110℃ for 10 minutes. Add the plasticized natural rubber sheets, chloroprene rubber sheets, and nitrile rubber sheets to the mixer, along with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler, and softener. Continue mixing until the discharge temperature is 125℃. Allow the mixture to stand at room temperature. Then, place the blended rubber in a flat vulcanizing machine, add a vulcanizing agent, and vulcanize for 20 to 30 minutes at a temperature of 140℃ to 170℃ and a pressure of 5 MPa to 15 MPa. The discharge temperature is 100℃ to 120℃ to obtain the finished rubber sheet.

[0173] Example 5: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 An oil- and corrosion-resistant environmentally friendly rubber sheet, comprising the following components in parts by weight:

[0174] Natural rubber: 50 parts;

[0175] Chloroprene rubber: 35 parts;

[0176] Nitrile rubber: 35 parts;

[0177] Hydrogen: 150 parts;

[0178] Hexafluoropropylene: 60 parts;

[0179] Catalyst: 2 parts;

[0180] Stearic acid: 1.5 parts;

[0181] Zinc oxide: 4 parts;

[0182] Carbon black: 45 parts;

[0183] Accelerator: 1 part;

[0184] Anti-aging agent: 1 part;

[0185] Vulcanizing agent: 6 parts;

[0186] Filler: 12 parts;

[0187] Softener: 15 parts;

[0188] The catalyst is a hydrazine hydrate, hydrogen peroxide and copper ion catalytic system;

[0189] The weight ratio of the chloroprene rubber to the nitrile rubber is 1:1;

[0190] The accelerator is N-cycloethyl-2-benzothiazole sulfenamide;

[0191] The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

[0192] The vulcanizing agent is sulfur;

[0193] The filler is amorphous silicon dioxide;

[0194] The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:1.

[0195] Further, prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃ for 6 hours. Plasticize the natural rubber in a mixer at 140℃ for 4 minutes, the chloroprene rubber in a mixer at 100℃ for 20 minutes, and the nitrile rubber in a mixer at 110℃ for 10 minutes. Add the plasticized natural rubber sheets, chloroprene rubber sheets, and nitrile rubber sheets to the mixer. In a mixing machine, stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler, and softener are added and mixed. The discharge temperature is 125℃. After being left to stand at room temperature, the rubber is placed in the mixing machine, and hexafluoropropylene is added. After modification in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa, the rubber is cleaned, dried, and left to stand at room temperature. The blended rubber is then placed in a hydrogen reactor with a catalyst and hydrogen is introduced. The reaction time is 8h~10h under the conditions of a hydrogen pressure of 6.0MPa~9.5MPa and a reaction temperature of 80℃~100℃. After the hydrogenated blended rubber is cleaned, dried, and left to stand at room temperature, it is placed in a flat vulcanizing machine. A vulcanizing agent is added, and the rubber is vulcanized for 20min~30min at a temperature of 140℃~170℃ and a pressure of 5MPa~15MPa. The discharge temperature is 100℃~120℃, and the finished rubber sheet is obtained.

[0196] Performance testing

[0197] Test 1: Shore hardness measurement was performed according to national standard GB / T531.1-2008. Ten rubber sheets prepared from each example and the control group were selected, and the test was conducted at three different locations on the rubber sheets. The average value was taken as the final result. Tensile strength and elongation at break were performed according to national standard GB / T528-2009. The test results are shown in the table below:

[0198] Test 2: Oil resistance test. Ten rubber sheets from each example and control group were selected and immersed in IRM903# oil at 100℃ for 70 hours according to the national standard GB / T1690-2010. The test results are shown in the table below:

[0199]

[0200] Test 3: Abrasion resistance test. Ten rubber sheets from each example and control group were selected and tested according to the national standard GB / T9867-2008 "Determination of abrasion resistance of vulcanized rubber or thermoplastic rubber (spiral roller abrasion test method)". The test results are shown in the table below:

[0201]

[0202] Test 4: Corrosion resistance test. Twenty rubber sheets from each example and control group were selected. Ten rubber sheets from each example and control group were immersed in 10% HCl and 10% NaOH at room temperature. The remaining samples were placed in a salt spray chamber for testing. The test results are shown in the table below:

[0203]

[0204] Working principle: Prepare 50 parts natural rubber, 35 parts chloroprene rubber, 35 parts nitrile rubber, 150 parts hydrogen, 60 parts hexafluoropropylene, 2 parts catalyst, 1.5 parts stearic acid, 4 parts zinc oxide, 45 parts carbon black, 1 part accelerator, 1 part antioxidant, 6 parts vulcanizing agent, 12 parts filler, and 15 parts softener. Clean the natural rubber, chloroprene rubber, and nitrile rubber separately. Dry the natural rubber at 60℃ for 24 hours, the chloroprene rubber at 40℃ for 24 hours, and the nitrile rubber at 60℃. Dry the rubber in an environment of ℃ for 6 hours. Put the natural rubber into a mixer at 140℃ and plasticize for 4 minutes. Put the chloroprene rubber into a mixer at 100℃ and plasticize for 20 minutes. Put the nitrile rubber into a mixer at 110℃ and plasticize for 10 minutes. Add the plasticized natural rubber sheets, chloroprene rubber sheets and nitrile rubber sheets into the mixer. Add stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler and softener and continue mixing. The discharge temperature is 125℃. Let it stand to room temperature.

[0205] The blended rubber was placed in a hydrogen reactor with a catalyst and hydrogen was introduced. The reaction time was 8h to 10h under the conditions of hydrogen pressure of 6.0MPa to 9.5MPa and reaction temperature of 80℃ to 100℃. After cleaning and drying, the hydrogenated blended rubber was placed in a mixer.

[0206] Add hexafluoropropylene and modify it in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa. After completion, let it stand at room temperature.

[0207] The blended rubber is placed in a flat vulcanizing machine, a vulcanizing agent is added, and vulcanization is carried out for 20 to 30 minutes at a temperature of 140℃ to 170℃ and a pressure of 5MPa to 15MPa. The rubber exit temperature is 100℃ to 120℃ to obtain the finished rubber sheet.

[0208] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An oil- and corrosion-resistant environmentally friendly rubber sheet, characterized in that: Includes the following components by weight: Natural rubber: 50 parts; Chloroprene rubber: 20 parts to 45 parts; Nitrile rubber: 20 parts to 45 parts; Hydrogen: 100 to 200 parts; Hexafluoropropylene: 50 to 100 parts; Catalyst: 1 to 4 parts; Stearic acid: 1 part to 2.5 parts; Zinc oxide: 4 to 5 parts; Carbon black: 30 parts to 65 parts; Accelerator: 1 to 3 parts; Anti-aging agent: 1 to 2.5 parts; Vulcanizing agent: 5 to 8 parts; Filler: 10 to 15 parts; Softener: 10 to 25 parts; The catalyst is a hydrazine hydrate, hydrogen peroxide, and copper ion catalytic system.

2. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The weight ratio of the chloroprene rubber to the nitrile rubber is 1:

1.

3. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The accelerator is N-cycloethyl-2-benzothiazole sulfenamide.

4. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The antioxidant is polytrimethyldihydroquinoline and ethoxyquinoline, with a weight ratio of 1:1 between polytrimethyldihydroquinoline and ethoxyquinoline.

5. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The vulcanizing agent is sulfur.

6. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The filler is amorphous silicon dioxide.

7. The oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 1, characterized in that: The softener is coumarone resin and coal tar resin, with a weight ratio of coumarone resin to coal tar resin of 2:

1.

8. A method for preparing an oil-resistant and corrosion-resistant environmentally friendly rubber sheet, applicable to the oil-resistant and corrosion-resistant environmentally friendly rubber sheet as described in any one of claims 1-7, characterized in that: The preparation method is as follows: S1: Clean natural rubber, chloroprene rubber and nitrile rubber respectively. Dry natural rubber at 60℃ for 24 hours, chloroprene rubber at 40℃ for 24 hours, and nitrile rubber at 60℃ for 6 hours. S2: Natural rubber, chloroprene rubber and nitrile rubber are respectively placed into an internal mixer for plasticizing; S3: Add the plasticized natural rubber sheet, neoprene rubber sheet and nitrile rubber sheet into the internal mixer and mix evenly; S4: Mix with stearic acid, zinc oxide, carbon black, accelerator, antioxidant, filler and softener; S5: Modified by adding hydrogen and catalyst; S6: Modified by adding hexafluoropropylene; S7: After modification, put the blended rubber into a flat vulcanizing machine, add vulcanizing agent, and vulcanize for 20 min to 30 min at a temperature of 140℃~170℃ and a pressure of 5MPa~15MPa. The rubber discharge temperature is 100℃~120℃. S8: After cooling and curing, the rubber sheet is cleaned, trimmed and dried to obtain the finished rubber sheet.

9. The method for preparing an oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 8, characterized in that: S4 is: S41: Place the mixed rubber blend into a hydrogenation reactor; S42: Add hydrogen and catalyst, and react for 8-10 hours in an environment with a temperature of 80-100℃ and a hydrogen pressure of 6.0-9.5MPa; S43: After the hydrogenation reaction is completed, the blended rubber is cleaned and dried.

10. The method for preparing an oil-resistant and corrosion-resistant environmentally friendly rubber sheet according to claim 8, characterized in that: S5 is: S51: Place the hydrogenated blended rubber in an internal mixer; S52: Add hexafluoropropylene and react in an environment with a temperature of 40℃~80℃ and a pressure of 1MPa~2.5MPa; S53: After the fluorination reaction is completed, the blended rubber is cleaned and dried.

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