Conductive material, method for preparing the same and use thereof

Abstract

The application belongs to the field of conductive materials, and particularly relates to a conductive material and a preparation method and application thereof. The conductive material is prepared by mixing dimethyl diallyl ammonium chloride, a conductive dopant and an initiator. The conductive dopant comprises at least one of a metal salt, a metal hydroxide, an organic small molecule, a polar solvent and a comonomer. The conductive material is prepared by selecting dimethyl diallyl ammonium chloride and a conductive dopant and an initiator component for reaction, and the conductive material is applied to silicone rubber to prepare conductive silicone rubber with good conductive performance. Meanwhile, the preparation process of the application is simple and low in cost, and a one-pot pyrolysis is adopted by using conventional raw materials, without the need of complex equipment or expensive catalysts, and the application is easy to be industrialized.

Description

Technical Field

[0001] This invention belongs to the field of conductive materials, specifically relating to a conductive material, its preparation method, and its application. Background Technology

[0002] Conductive silicone rubber is a polymer material with special functions and wide applications in many fields. Its main applications include: ① Electronic packaging materials: Due to its excellent insulation, heat resistance, and chemical resistance, conductive silicone rubber can be used as a packaging material for some electronic components, especially for electronic devices used in high-temperature or low-temperature environments. ② Antistatic and conductive coatings: Conductive silicone rubber can be used as an antistatic or conductive coating material in floors, walls, and other applications requiring antistatic properties. ③ Sensors: The sensitivity of conductive silicone rubber makes it a promising candidate for manufacturing pressure and strain sensors, as it can convert physical deformation into electrical signals for monitoring and control. ④ Medical devices: In the medical field, conductive silicone rubber can be used to manufacture electrodes, electrocardiogram sensors, and other devices with high compatibility requirements. ⑤ Electromagnetic shielding: Conductive silicone rubber can be used for electromagnetic shielding of electronic devices to reduce electromagnetic interference and improve device performance and reliability. ⑥ Energy sector: In energy devices such as solar panels and fuel cells, conductive silicone rubber can be used as an electrode adhesive or encapsulation material. ⑦ Smart textiles: Applying conductive silicone rubber to textile materials allows for the development of smart textiles with conductivity, heating properties, or sensing capabilities. ⑧ Automotive Industry: In the automotive industry, conductive silicone rubber can be used to manufacture various sensors and as anti-static components. ⑨ Aerospace: Due to its ability to withstand extreme temperatures and environments, conductive silicone rubber is used in the aerospace field to manufacture various sensors and insulating components.

[0003] Currently, there are three main theoretical explanations for the conductivity mechanism of conductive silicone rubber: percolation theory, tunneling effect theory, and field emission conductivity theory. Percolation theory posits that when the conductive filler reaches a certain concentration in silicone rubber, its conductivity undergoes a sudden change; that is, the distribution of the conductive filler within the conductive silicone rubber changes abruptly, resulting in different conductive network distributions. Tunneling effect theory, from a molecular thermodynamics perspective, suggests that a certain interface layer is formed between the polymer and the conductive filler. While the conductive filler is not in direct contact, under thermodynamic impetus, its particles undergo electron transitions, thus acquiring a certain degree of conductivity. Furthermore, a high electric field can also cause electron transitions and migrations between particles within the silicone rubber, allowing the conductive filler to exhibit a certain conductivity even in silicone rubber with a low content; this is the field emission conductivity theory.

[0004] Based on prior literature review and preliminary exploration, this invention attempts to combine or copolymerize dimethyl diallyl ammonium chloride with various functional substances in order to screen out modification methods that can effectively improve conductivity. Summary of the Invention

[0005] To address at least one deficiency in existing technologies, this invention aims to provide a conductive material, its preparation method, and its application. This invention utilizes a conductive material prepared by chemically bonding dimethyl diallyl ammonium chloride with a conductive dopant and an initiator component, and applies this material to silicone rubber to obtain a conductive silicone rubber with excellent conductivity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a conductive material prepared by mixing dimethyl diallyl ammonium chloride (DMDAAC), a conductive dopant, and an initiator, and reacting them; The conductive dopant includes at least one of the following: metal salt, metal hydroxide, small organic molecule, polar solvent, and comonomer.

[0007] In one embodiment of the conductive material described in this invention, the mass ratio of dimethyl diallyl ammonium chloride to the conductive dopant is 10:(1~8).

[0008] In the conductive material of the present invention, if the mass ratio of the selected dimethyl diallyl ammonium chloride to the conductive dopant is not appropriate, the conductivity of the final conductive material will be significantly reduced and will be almost impossible to detect.

[0009] In one embodiment of the conductive material of the present invention, the mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 15:(0.5~1).

[0010] In the conductive material of the present invention, if the mass ratio of dimethyl diallyl ammonium chloride to initiator is not appropriate, the conductivity will be insignificant, the resulting conductive material will be uneven, and the instrument will be unable to measure its resistance.

[0011] As one embodiment of the conductive material of the present invention, the metal salt includes at least one of bismuth nitrate, lithium carbonate, manganese sulfate, and copper nitrate.

[0012] In this invention, when bismuth nitrate is used as the conductive dopant component, Bi 3+ Bi can undergo a coordination reaction with DMDAAC. 3+ It is a strong Lewis acid with empty orbitals, and can coordinate with the lone pair electrons on the quaternary ammonium nitrogen atom in the DMDAAC molecule. 35 As a "molecular rivet," it can simultaneously coordinate with multiple DMDAAC molecular chains to form a three-dimensional network structure. Upon heating, Bi... 3 + The oxidizing properties can also induce the opening of DMDAAC double bonds, promoting their self-polymerization and forming a homogeneous composite precursor. Simultaneously, coordination effects enable Bi... 3+Bi is uniformly dispersed at the molecular level in a DMDAAC matrix and then subjected to heat treatment. 3+ Carbon is reduced to metallic Bi nanoparticles (electronic conductors), and DMDAAC is carbonized into a nitrogen-doped carbon framework (electronic conductor), forming a dual conductive network. The metal-carbon interface forms a tight contact, synergistically promoting conductivity and effectively reducing the contact resistance of the resulting conductive material. Simultaneously, Bi... 3+ The coordination with DMDAAC enables the metal to be uniformly dispersed at the molecular level, which can completely avoid the problem of filler agglomeration in traditional physical blending.

[0013] In this invention, when bismuth nitrate is used as a conductive dopant component, alcohol can be added to further improve dispersibility.

[0014] In this invention, when copper nitrate is used as the conductive dopant component, Cu 2+ It can also undergo a coordination reaction with the nitrogen atoms of DMDAAC to form a coordination complex, which, after heat treatment, Cu... 2+ It is reduced to Cu / Cu2O, which, together with the carbon framework, provides conductivity, resulting in conductive materials with good electrical conductivity.

[0015] When lithium carbonate and manganese sulfate are selected as conductive dopants in this invention, their coordination ability with DMDAAC is weak, and they cannot form a stable conductive network, resulting in poor conductivity of the prepared conductive material.

[0016] In a preferred embodiment of the conductive material of the present invention, the metal salt includes at least one of bismuth nitrate and copper nitrate.

[0017] As one embodiment of the conductive material described in this invention, the metal hydroxide includes lithium hydroxide.

[0018] As one embodiment of the conductive material of the present invention, the organic small molecule includes N-tert-butyl.

[0019] In this invention, when N-tert-butyl is selected as the conductive dopant component, N-tert-butyl, as a highly active monomer, can undergo a free radical copolymerization reaction with DMDAAC. After carbonization, nitrogen-doped carbon is obtained, which can effectively improve the electronic conductivity of silicone rubber when added to it.

[0020] As one embodiment of the conductive material described in this invention, the polar solvent includes N-vinylpyrrolidone.

[0021] As one embodiment of the conductive material of the present invention, the comonomer includes methacryloyloxyethyltrimethylammonium chloride.

[0022] As one embodiment of the conductive material of the present invention, the initiator includes at least one of ammonium persulfate, potassium sulfate, sodium persulfate, and hydrogen peroxide.

[0023] In the conductive material of the present invention, the selected conductive dopant components (except for lithium carbonate, manganese sulfate, copper nitrate, and lithium hydroxide) can all undergo coordination or copolymerization chemical bonding reactions with dimethyldiallylammonium chloride. The resulting conductive material, when applied to silicone rubber, can provide a "carbon skeleton" precursor for the conductive network, thereby improving the conductivity of the silicone rubber.

[0024] This invention also claims protection for a method for preparing the conductive material, comprising the following steps: Dimethyl diallyl ammonium chloride is heated, a conductive dopant is added, the mixture is stirred, an initiator is added, and the reaction is carried out to obtain the conductive material.

[0025] In one embodiment of the method for preparing the conductive material of the present invention, the heating is to raise the temperature to 60~80°C.

[0026] In one embodiment of the method for preparing the conductive material of the present invention, the stirring time is 1 to 10 minutes.

[0027] In one embodiment of the method for preparing the conductive material of the present invention, the reaction temperature is 80~120℃ and the reaction time is 1~5 hours.

[0028] The present invention also claims protection for a conductive silicone rubber comprising the conductive material and the silicone rubber.

[0029] In one embodiment of the conductive silicone rubber of the present invention, the mass ratio of the conductive material to the silicone rubber is (1~10):10.

[0030] The present invention also claims protection for the use of the aforementioned conductive material, or the conductive material obtained by the aforementioned preparation method, in the preparation of conductive silicone rubber.

[0031] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention obtains conductive materials by chemically combining dimethyl diallyl ammonium chloride with different types of conductive dopants and initiator components and applying them to silicone rubber to obtain conductive silicone rubber with good conductivity.

[0032] (2) The conductive material of the present invention has a stable and multifunctional structure, which can form a core-shell structure of "carbon-coated metal". The carbon layer can protect the metal nanoparticles, making them resistant to corrosion and aging, and may produce synergistic functions. At the same time, the conductivity is easy to adjust: the conductivity of the final material can be precisely controlled by simply changing the ratio of conductive dopant to DMDAAC, so as to meet the needs of different scenarios.

[0033] (3) The preparation process of the present invention is simple and low cost. It uses conventional raw materials and one-pot pyrolysis, without the need for complex equipment or expensive catalysts, and is easy to industrialize. Detailed Implementation

[0034] 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.

[0035] Unless otherwise specified, the experimental methods used in the examples and comparative examples are conventional methods, and the materials and reagents used are commercially available unless otherwise specified.

[0036] In the examples, the amount of dimethyl diallyl ammonium chloride added to the conductive material remained the same, at 10g.

[0037] Example 1

[0038] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0039] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0040] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0041] The conductive dopant is bismuth nitrate; The initiator is ammonium persulfate.

[0042] Example 2

[0043] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0044] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:2.

[0045] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0046] The conductive dopant is bismuth nitrate; The initiator is ammonium persulfate.

[0047] Example 3

[0048] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0049] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:3.

[0050] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0051] The conductive dopant is bismuth nitrate; The initiator is ammonium persulfate.

[0052] Example 4

[0053] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0054] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:4.

[0055] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0056] The conductive dopant is bismuth nitrate; The initiator is ammonium persulfate.

[0057] Example 5

[0058] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, the mixture was stirred for 1 minute, an initiator was added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0059] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0060] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0061] The conductive dopant is N-vinylpyrrolidone; The initiator is potassium sulfate.

[0062] Example 6

[0063] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, the mixture was stirred for 1 minute, an initiator was added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0064] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:2.

[0065] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0066] The conductive dopant is N-vinylpyrrolidone; The initiator is potassium sulfate.

[0067] Example 7

[0068] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, the mixture was stirred for 10 minutes, an initiator was added, and the mixture was reacted at 120°C for 5 hours to obtain the conductive material.

[0069] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0070] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0071] The conductive dopant is N-tert-butyl; The initiator is sodium persulfate.

[0072] Example 8

[0073] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 5 hours to obtain the conductive material.

[0074] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0075] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0076] The conductive dopant is copper nitrate; The initiator is ammonium persulfate.

[0077] Example 9

[0078] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0079] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0080] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0081] The conductive dopant is lithium carbonate; The initiator is ammonium persulfate.

[0082] Example 10

[0083] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0084] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0085] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0086] The conductive dopant is lithium hydroxide; The initiator is ammonium persulfate.

[0087] Example 11

[0088] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 5 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0089] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0090] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:0.8.

[0091] The conductive dopant is manganese sulfate; The initiator is ammonium persulfate.

[0092] Example 12

[0093] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 3 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0094] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:1.

[0095] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0096] The conductive dopant is methacryloyloxyethyltrimethylammonium chloride; The initiator is ammonium persulfate.

[0097] Example 13

[0098] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 3 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0099] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:2.

[0100] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0101] The conductive dopant is methacryloyloxyethyltrimethylammonium chloride; The initiator is ammonium persulfate.

[0102] Example 14

[0103] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 3 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0104] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:3.

[0105] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0106] The conductive dopant is methacryloyloxyethyltrimethylammonium chloride; The initiator is ammonium persulfate.

[0107] Example 15

[0108] A conductive material is prepared by reacting dimethyldiallylammonium chloride, a conductive dopant, and an initiator. The method for preparing the conductive material includes the following steps: Dimethyl diallyl ammonium chloride was heated to 70°C, a conductive dopant was added, and the mixture was stirred for 3 minutes. An initiator was then added, and the mixture was reacted at 80°C for 3 hours to obtain the conductive material.

[0109] The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:8.

[0110] The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 1:1.

[0111] The conductive dopant is methacryloyloxyethyltrimethylammonium chloride; The initiator is ammonium persulfate.

[0112] Test case The conductive materials prepared in each embodiment were added to silicone rubber (10g) in different amounts and mixed thoroughly to obtain conductive silicone rubber. After curing into a film, the insulation resistance value of the sample was measured using an insulation resistance tester. The resistivity was calculated based on the sample thickness and electrode area, and then the conductivity was calculated. The calculation formula is shown below: Conductivity calculation: 1. Calculate resistivity using the formula: ρ = R × S / d (unit: Ω·m).

[0113] 2. Convert conductivity according to the formula: σ=1 / ρ (unit: S / m), retain 3 significant figures.

[0114] The specific parameters and test results of the conductive silicone rubber are shown in Table 1-2.

[0115] Table 1 Table 2 As can be seen from the experimental data in Tables 1 and 2, in the embodiments of the present invention, dimethyl diallyl ammonium chloride (DMDAAC) is chemically combined with different types of conductive dopant components (metal salts, metal hydroxides, small organic molecules, polar solvents, comonomers) to prepare conductive materials. When applied to silicone rubber, conductive silicone rubber with conductive properties can be prepared.

[0116] Examples 1-4 use bismuth nitrate as a conductive dopant component, and the resulting conductive silicone rubbers all achieve good conductivity, with the minimum insulation resistance reaching 98.03kΩ.

[0117] In Examples 5-6, N-vinylpyrrolidone was used as a conductive dopant component. The resulting conductive material had a viscous texture and showed the best effect when added to silicone rubber at an amount of 3g.

[0118] In Example 7, N-tert-butyl was used as the conductive dopant component. The reaction was extremely vigorous, producing white smoke and gushing out. After the reaction ended, it became a hard, gel-like substance that was difficult to collect and very viscous. Possible reasons: The polymerization rate was extremely fast. Rapid solidification "froze" the conductive particles in undesirable positions, making it difficult to form an ordered network. The structure was non-uniform; the excessively fast polymerization resulted in a very wide molecular weight distribution of the polymer, even forming an insoluble gel. This led to extremely uneven distribution of the conductive filler, ultimately resulting in poor conductivity of the prepared conductive silicone rubber.

[0119] In Example 8, copper nitrate was used as a conductive dopant component. No explosive polymerization occurred during the reaction, and a blue-green solution was formed. The effect was best when 2g was added, but the water content was extremely high. Subsequent increases in the amount added could not solidify, and water overflowed.

[0120] Examples 9-11 used lithium carbonate, lithium hydroxide, and manganese sulfate as conductive dopant components. The insulation resistance of the conductive materials prepared and mixed with silicone rubber was measured to be above GΩ. The reason may be: ① Lithium salt (lithium carbonate / lithium hydroxide): Li + Lewis acid is extremely weak and cannot coordinate with the nitrogen atom of DMDAAC; moreover, its pyrolysis products are insulating lithium oxide / lithium carbonate, with no conductive phase; ② Manganese sulfate: Mn 2+ The Lewis acid is weak and it is difficult to form a stable coordination; the pyrolysis product is manganese oxide with poor conductivity and it does not have the ability to catalyze graphitization; the metal ions in lithium carbonate, lithium hydroxide and manganese sulfate cannot form a stable coordination bond with DMDAAC, and they cannot generate conductive metal elements or graphite carbon networks after pyrolysis, resulting in an excessively high insulation resistance value of the product after being added to silicone rubber.

[0121] Examples 12-15 use methacryloyloxyethyltrimethylammonium chloride as a conductive dopant component. The experimental data in Table 2 show that when the mass ratio of dimethyl diallyl ammonium chloride to methacryloyloxyethyltrimethylammonium chloride is 10:8 and the amount added is more than 5g, the insulation resistance of the prepared conductive silicone rubber can reach the kΩ level, and the minimum insulation resistance can reach 89.16kΩ, achieving good conductivity.

[0122] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A conductive material, characterized in that, The product is prepared by mixing dimethyldiallylammonium chloride, a conductive dopant, and an initiator, and then reacting them. The conductive dopant includes at least one of the following: metal salt, metal hydroxide, small organic molecule, polar solvent, and comonomer.

2. The conductive material as described in claim 1, characterized in that, The mass ratio of the dimethyl diallyl ammonium chloride to the conductive dopant is 10:(1~8).

3. The conductive material as described in claim 1, characterized in that, The mass ratio of the dimethyl diallyl ammonium chloride to the initiator is 15:(0.5~1).

4. The conductive material as described in claim 1, characterized in that, The metal salt includes at least one of bismuth nitrate, lithium carbonate, manganese sulfate, and copper nitrate; The metal hydroxide includes lithium hydroxide; The organic small molecule includes N-tert-butyl; The polar solvent includes N-vinylpyrrolidone; The comonomer includes methacryloyloxyethyltrimethylammonium chloride.

5. The conductive material as described in claim 1, characterized in that, The initiator includes at least one of ammonium persulfate, potassium sulfate, sodium persulfate, and hydrogen peroxide.

6. A method for preparing the conductive material according to any one of claims 1 to 5, characterized in that, Includes the following steps: Dimethyl diallyl ammonium chloride is heated, a conductive dopant is added, the mixture is stirred, an initiator is added, and the reaction is carried out to obtain the conductive material.

7. The preparation method according to claim 6, characterized in that, The heating is to raise the temperature to 60~80℃; The stirring time is 1~10 min; The reaction temperature is 80~120℃, and the reaction time is 1~5 hours.

8. A conductive silicone rubber, characterized in that, It includes the conductive material as described in any one of claims 1 to 5 and silicone rubber.

9. The conductive silicone rubber as described in claim 8, characterized in that, The mass ratio of the conductive material to the silicone rubber is (1~10):

10.

10. The application of a conductive material as described in any one of claims 1 to 5, or a conductive material prepared by any one of claims 6 to 7, in the preparation of conductive silicone rubber.

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