Antistatic corrosion-resistant rubber

Abstract

The invention discloses antistatic corrosion-resistant rubber, which is prepared from the following components in parts by weight: 14 to 21 parts of butyl rubber, 3 to 8 parts of magnesium oxide powder, 4 to 9 parts of polyethylene terephthalate, 1 to 6 parts of silicon rubber, 45 to 55 parts of carbon black and 3 to 9 parts of polytetrafluoroethylene. The rubber can still maintain a strong antistatic function at a high temperature of 120 DEG C, and the added polytetrafluoroethylene and silicone rubber can improve the mechanical properties of the rubber while improving the acid, alkali and salt corrosion resistance of the rubber, so that the service life of the rubber is greatly prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber, and specifically to an antistatic and corrosion-resistant rubber. Background Art

[0002] Neoprene is a synthetic rubber produced by α-polymerization using chloroprene as the main raw material. Neoprene has good physical and mechanical properties, resistance to oil, heat, fire, sunlight, ozone, acids and alkalis, chemical reagents, and polyethylene terephthalate is a crystalline saturated polyester, which is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It is a common resin in life and has excellent physical and mechanical properties within a relatively wide temperature range. The service temperature can reach 120°C, and it has excellent electrical insulation properties.

[0003] In the prior art, a corrosion-resistant rubber material disclosed in the publication number "CN111423608A" includes a rubber layer, and anticorrosive mixed layers are provided on the top and bottom surfaces of the rubber layer. A sliding anticorrosive layer is provided on the side of the anticorrosive mixed layer away from the rubber layer. A preparation method of a corrosion-resistant rubber material includes the following steps: A. Heat asphalt, add silicon dioxide and then stir, and apply it to the top and bottom surfaces of the rubber layer; B. Mix marble, talcum powder, silica gel and an adhesive and heat them, then stir them evenly, and after stirring, evenly apply them to the surface of the anticorrosive mixed layer to form a sliding anticorrosive layer. After the sliding anticorrosive layer is completely cooled, polish the surface of the sliding anticorrosive layer. In the present invention, the rubber layer is covered by the anticorrosive mixed layer and the sliding anticorrosive layer, isolating the rubber layer from corrosive liquids, and extending the service life of the rubber layer in a corrosive environment without affecting the physical properties and mechanical properties of the rubber layer.

[0004] However, there are still significant deficiencies in the prior art, such as:

[0005] In the above device and the prior art, the rubber layer is coated by the provided anticorrosive mixed layer and sliding anticorrosive layer, which can reduce the wear of the rubber layer during use. Due to the material characteristics of the anticorrosive mixed layer and the sliding anticorrosive layer, they will separate from the rubber layer under long-term high-temperature use conditions. At the same time, the anticorrosive mixed layer and the sliding anticorrosive layer have certain antistatic and corrosion-resistant functions, but after the anticorrosive mixed layer and the sliding anticorrosive layer separate from the rubber layer, the antistatic and corrosion-resistant functions of the rubber will decline, affecting the use of the rubber in an electrostatic environment. Summary of the Invention

[0006] The purpose of the present invention is to provide an antistatic and corrosion-resistant rubber to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: An antistatic and corrosion-resistant rubber, comprising the following components counted by weight parts: 14-21 parts of butyl rubber, 3-8 parts of magnesium oxide powder, 4-9 parts of polyethylene terephthalate, 1-6 parts of silicone rubber, 45-55 parts of channel furnace carbon black, 3-9 parts of polytetrafluoroethylene, and 4-9 parts of polyethylene terephthalate.

[0008] Preferably, 15-20 parts of butyl rubber, 4-7 parts of magnesium oxide powder, 5-8 parts of polyethylene terephthalate, 2-5 parts of silicone rubber, 48-54 parts of channel furnace carbon black, 4-8 parts of polytetrafluoroethylene, and 5-8 parts of polyethylene terephthalate.

[0009] Preferably, 16-19 parts of butyl rubber, 5-6 parts of magnesium oxide powder, 6-7 parts of polyethylene terephthalate, 3-4 parts of silicone rubber, 50-52 parts of channel furnace carbon black, 5-7 parts of polytetrafluoroethylene, and 6-7 parts of polyethylene terephthalate.

[0010] Preferably, 15 parts of butyl rubber, 4 parts of magnesium oxide powder, 5 parts of polyethylene terephthalate, 2 parts of silicone rubber, 48 parts of channel furnace carbon black, 4 parts of polytetrafluoroethylene, and 5 parts of polyethylene terephthalate.

[0011] Preferably, 20 parts of butyl rubber, 7 parts of magnesium oxide powder, 8 parts of polyethylene terephthalate, 5 parts of silicone rubber, 54 parts of channel furnace carbon black, 8 parts of polytetrafluoroethylene, and 8 parts of polyethylene terephthalate.

[0012] Preferably, 16 parts of butyl rubber, 5 parts of magnesium oxide powder, 6 parts of polyethylene terephthalate, 3 parts of silicone rubber, 50 parts of channel furnace carbon black, 5 parts of polytetrafluoroethylene, and 6 parts of polyethylene terephthalate.

[0013] Preferably, 19 parts of butyl rubber, 6 parts of magnesium oxide powder, 7 parts of polyethylene terephthalate, 4 parts of silicone rubber, 52 parts of channel furnace carbon black, 7 parts of polytetrafluoroethylene, and 7 parts of polyethylene terephthalate.

[0014] Preferably, successively put the butyl rubber, magnesium oxide powder and channel furnace carbon black raw materials into the same container, mix the materials into a qualified and uniform ratio, put the small granular mixed material into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95°C - 105°C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85°C - 90°C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120°C for baking to form a solid product, completing the production of the antistatic and corrosion-resistant rubber.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By adding polyethylene terephthalate to the mixed particles, the rubber can still maintain a strong antistatic function at a high temperature of 120 °C. At the same time, the added polytetrafluoroethylene and silicone rubber can improve the mechanical properties of the rubber while enhancing the corrosion resistance of the rubber to acids, alkalis and salts, greatly enhancing the service life of the rubber. Specific embodiments

[0016] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0017] The present invention provides a technical solution:

[0018] Embodiment 1: An antistatic and corrosion-resistant rubber: comprising the following components counted by weight parts: 14-21 parts of butyl rubber, 3-8 parts of magnesium oxide powder, 4-9 parts of polyethylene terephthalate, 1-6 parts of silicone rubber, 45-55 parts of channel furnace carbon black, and 3-9 parts of polytetrafluoroethylene.

[0019] Preparation steps: sequentially put the raw materials of butyl rubber, magnesium oxide powder and channel furnace carbon black into the same container, mix the materials into a qualified and uniform ratio, put the small granular mixture into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95 °C - 105 °C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85 °C - 90 °C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120 °C for baking to form a solid product, completing the production of the antistatic and corrosion-resistant rubber. Embodiment 2: An antistatic and corrosion-resistant rubber: 15-20 parts of butyl rubber, 4-7 parts of magnesium oxide powder, 5-8 parts of polyethylene terephthalate, 2-5 parts of silicone rubber, 48-54 parts of channel furnace carbon black, and 4-8 parts of polytetrafluoroethylene.

[0020] Preparation steps: butyl rubber, magnesium oxide powder and channel carbon black raw materials are placed in the same container in turn, the materials are mixed into a qualified uniform ratio, small particle powder mixture is placed in a stirring chamber, the mixture is mixed in a certain proportion, then the temperature in the stirring chamber is increased to 95°C-105°C, silicone rubber, polytetrafluoroethylene and polyethylene terephthalate are added, and then the mixing step is continued in the stirring chamber. When the mixing step is completed, the stirring chamber is cooled to 85°C-90°C and polyethylene terephthalate is added for secondary mixing. After the raw materials are thoroughly mixed, the treated mixture is transferred to a foaming furnace for foaming and condensation, the foamed rubber is loaded into a molding mold, and finally the molded rubber product is placed on a 120°C heating rack for baking to form a solid product, thereby completing the production of antistatic and corrosion-resistant rubber. Embodiment 3: An antistatic and corrosion-resistant rubber: comprising the following components counted by weight: 16-19 parts of butyl rubber, 5-6 parts of magnesium oxide powder, 6-7 parts of polyethylene terephthalate, 3-4 parts of silicone rubber, 50-52 parts of channel carbon black, and 5-7 parts of polytetrafluoroethylene.

[0021] Preparation steps: butyl rubber, magnesium oxide powder and channel carbon black raw materials are placed in the same container in turn, the materials are mixed into a qualified uniform ratio, small particle powder mixture is placed in a stirring chamber, the mixture is mixed in a certain proportion, then the temperature in the stirring chamber is increased to 95°C-105°C, silicone rubber, polytetrafluoroethylene and polyethylene terephthalate are added, and then the mixing step is continued in the stirring chamber. When the mixing step is completed, the stirring chamber is cooled to 85°C-90°C and polyethylene terephthalate is added for secondary mixing. After the raw materials are thoroughly mixed, the treated mixture is transferred to a foaming furnace for foaming and condensation, the foamed rubber is loaded into a molding mold, and finally the molded rubber product is placed on a 120°C heating rack for baking to form a solid product, thereby completing the production of antistatic and corrosion-resistant rubber. Embodiment 4: An antistatic and corrosion-resistant rubber comprises the following components counted by weight: 15 parts of butyl rubber, 4 parts of magnesium oxide powder, 5 parts of polyethylene terephthalate, 2 parts of silicone rubber, 48 parts of channel carbon black, and 4 parts of polytetrafluoroethylene.

[0022] Preparation steps: successively put butyl rubber, magnesium oxide powder and channel furnace carbon black raw materials into the same container, mix the materials into a qualified and uniform ratio, put the small particle powdery mixture into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95°C - 105°C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85°C - 90°C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120°C for baking to form a solid product, thus completing the production of the antistatic and corrosion-resistant rubber.

[0023] Example 5: An antistatic and corrosion-resistant rubber, comprising the following components counted by weight parts: 20 parts of butyl rubber, 7 parts of magnesium oxide powder, 8 parts of polyethylene terephthalate, 5 parts of silicone rubber, 54 parts of channel furnace carbon black, and 8 parts of polytetrafluoroethylene.

[0024] Preparation steps: successively put butyl rubber, magnesium oxide powder and channel furnace carbon black raw materials into the same container, mix the materials into a qualified and uniform ratio, put the small particle powdery mixture into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95°C - 105°C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85°C - 90°C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120°C for baking to form a solid product, thus completing the production of the antistatic and corrosion-resistant rubber.

[0025] Example 6: An antistatic and corrosion-resistant rubber, comprising the following components counted by weight parts: 16 parts of butyl rubber, 5 parts of magnesium oxide powder, 6 parts of polyethylene terephthalate, 3 parts of silicone rubber, 50 parts of channel furnace carbon black, and 5 parts of polytetrafluoroethylene.

[0026] Preparation steps: Sequentially put butyl rubber, magnesium oxide powder and channel black raw materials into the same container, mix the materials into a qualified and uniform ratio, put the small granular mixed materials into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95°C - 105°C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85°C - 90°C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120°C for baking to form a solid product, thus completing the production of antistatic and corrosion-resistant rubber.

[0027] Example 7: An antistatic and corrosion-resistant rubber, comprising the following components by weight: 19 parts of butyl rubber, 6 parts of magnesium oxide powder, 7 parts of polyethylene terephthalate, 4 parts of silicone rubber, 52 parts of channel black, and 7 parts of polytetrafluoroethylene.

[0028] Preparation steps: Sequentially put butyl rubber, magnesium oxide powder and channel black raw materials into the same container, mix the materials into a qualified and uniform ratio, put the small granular mixed materials into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95°C - 105°C, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85°C - 90°C and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding mold, and finally place the rubber product in the mold on a heating rack at 120°C for baking to form a solid product, thus completing the production of antistatic and corrosion-resistant rubber.

[0029] Performance test:

[0030] Perform performance tests on the finished products obtained in Examples 1 - 6 of the present invention and the finished product obtained in Example 7.

[0031] Table 1 shows the performance test data:

[0032] Tensile strength (Mpa) Alkali resistance (60wt% - NaOH solution) Acid resistance (60wt% - H₂SO₄ solution) Salt resistance (60wt% - NaCl solution) Surface impedance value (Ω) Example 1 110 No change after 720H No change after 720H No change after 720H 10 + 2Ω Example 2 106 No change after 720H No change after 720H No change after 720H 10 + 4Ω Example 3 108 No change after 720H No change after 720H No change after 720H 10 + 6Ω Example 4 112 No change after 720H No change after 720H No change after 720H 10 + 7Ω Example 5 114 No change after 720H No change after 720H No change after 720H 10 + 9Ω Example 6 112 No change after 720H No change after 720H No change after 720H 10 + 8Ω Example 7 110 No change after 720H No change after 720H No change after 720H 10 + 7Ω

[0033] From the above data, it can be known that the present invention has excellent performance in the fields of acid and alkali salt resistance, tensile resistance and antistatic properties, and Example 5 has the best performance in acid and alkali salt resistance, tensile resistance and antistatic properties.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antistatic and corrosion-resistant rubber, characterized in that, It includes the following components counted by weight parts: 14 - 21 parts of butyl rubber, 3 - 8 parts of magnesium oxide powder, 4 - 9 parts of polyethylene terephthalate, 1 - 6 parts of silicone rubber, 45 - 55 parts of channel furnace carbon black, and 3 - 9 parts of polytetrafluoroethylene.

2. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 15 - 20 parts of butyl rubber, 4 - 7 parts of magnesium oxide powder, 5 - 8 parts of polyethylene terephthalate, 2 - 5 parts of silicone rubber, 48 - 54 parts of channel furnace carbon black, and 4 - 8 parts of polytetrafluoroethylene.

3. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 16 - 19 parts of butyl rubber, 5 - 6 parts of magnesium oxide powder, 6 - 7 parts of polyethylene terephthalate, 3 - 4 parts of silicone rubber, 50 - 52 parts of channel furnace carbon black, and 5 - 7 parts of polytetrafluoroethylene.

4. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 15 parts of butyl rubber, 4 parts of magnesium oxide powder, 5 parts of polyethylene terephthalate, 2 parts of silicone rubber, 48 parts of channel furnace carbon black, and 4 parts of polytetrafluoroethylene.

5. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 20 parts of butyl rubber, 7 parts of magnesium oxide powder, 8 parts of polyethylene terephthalate, 5 parts of silicone rubber, 54 parts of channel furnace carbon black, and 8 parts of polytetrafluoroethylene.

6. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 16 parts of butyl rubber, 5 parts of magnesium oxide powder, 6 parts of polyethylene terephthalate, 3 parts of silicone rubber, 50 parts of channel furnace carbon black, and 5 parts of polytetrafluoroethylene.

7. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following components counted by weight parts: 19 parts of butyl rubber, 6 parts of magnesium oxide powder, 7 parts of polyethylene terephthalate, 4 parts of silicone rubber, 52 parts of channel furnace carbon black, and 7 parts of polytetrafluoroethylene.

8. An antistatic and corrosion-resistant rubber according to claim 1, characterized in that, It includes the following preparation steps: successively put the raw materials of butyl rubber, magnesium oxide powder and channel furnace carbon black into the same container, mix the materials into a qualified and uniform ratio, put the small particle powdery mixture into the mixing chamber, mix the mixture in a certain proportion, then raise the temperature in the mixing chamber to 95℃ - 105℃, add silicone rubber, polytetrafluoroethylene and polyethylene terephthalate, and then continuously mix through the mixing chamber. When this mixing step is completed, cool the mixing chamber to 85℃ - 90℃ and add polyethylene terephthalate for secondary mixing. After the raw materials are thoroughly mixed, transfer the treated mixture to a foaming furnace for foaming and coagulation, put the foamed rubber into a molding die, and finally place the rubber product in the mold on a heating rack at 120℃ for baking to form a solid product, thus completing the production of the antistatic and corrosion - resistant rubber.