Conductive high polymer material and application thereof

Abstract

The invention discloses a conductive high polymer material and application thereof, and relates to the field of high polymer materials. 5-10 parts of a conductive filler; 4-5 parts of a wear-resistant agent; 3-5 parts of a coupling agent; 3-5 parts of an antioxidant; 3-5 parts of an antistatic agent; 4-5 parts of a light stabilizer; 4-5 parts of a plasticizer; and 4-5 parts of a heat stabilizer. The base material is an ethylene-ethyl acrylate copolymer. The conductive filler is mixed powder composed of 35% of copper powder, 10% of silver powder, 20% of aluminum powder and 35% of carbon black powder, and the beneficial effects are that the ethylene-ethyl acrylate copolymer is adopted as the base material, and the mixed powder composed of 35% of copper powder, 10% of silver powder, 20% of aluminum powder and 35% of carbon black powder is adopted as the conductive filler; and the wear-resistant agent, the coupling agent, the antioxidant, the antistatic agent, the light stabilizer, the plasticizer and the heat stabilizer are added according to a certain ratio, so that the prepared high polymer material has relatively good conductivity.

Description

Technical Field

[0001] The invention relates to the field of polymer materials, and in particular to a conductive polymer material and application thereof. Background Art

[0002] Polymer materials have been used as electrical insulating materials for a long time. With the needs of different application fields and in order to further broaden the application scope of polymer materials, some polymer materials are given a certain degree of conductivity to become conductive polymer materials. The first highly conductive polymer material was iodine-doped polyacetylene, followed by the development of conductive polymer materials such as polypyrrole, polyparaphenylene, polyphenylene sulfide, and polyaniline.

[0003] Although existing polymer materials have good electrical conductivity, their performance in other aspects needs to be improved. In the manufacture of automotive batteries, they are not only required to have good electrical conductivity, but also good corrosion resistance, wear resistance, antioxidant stability and other properties.

[0004] Therefore, it is necessary to invent a conductive polymer material and its application. Summary of the invention

[0005] To this end, the present invention provides a conductive polymer material and application thereof to solve the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a conductive polymer material and its application, wherein the mass ratio of the polymer material includes: 55-70 parts of base material; 5-10 parts of conductive filler; 4-5 parts of wear-resistant agent; 3-5 parts of coupling agent; 3-5 parts of antioxidant; 3-5 parts of antistatic agent; 4-5 parts of light stabilizer; 4-5 parts of plasticizer; and 4-5 parts of heat stabilizer.

[0007] Preferably, the base material is ethylene-ethyl acrylate copolymer.

[0008] Preferably, the conductive filler is a mixed powder consisting of 35% copper powder, 10% silver powder, 20% aluminum powder and 35% carbon black powder.

[0009] Preferably, the wear-resistant agent is a mixed powder composed of 50% polytetrafluoroethylene and 50% molybdenum disulfide.

[0010] Preferably, the coupling agent is isopropyl tri(dioctyl pyrophosphate) titanate.

[0011] Preferably, the antioxidant is a mixture of 50% 2,6-di-tert-butyl-p-cresol and 50% triphenyl phosphite.

[0012] Preferably, the antistatic agent is polyethylene glycol ester.

[0013] Preferably, the light stabilizer is 2-hydroxy-4-methoxybenzophenone, the plasticizer is tricresyl phosphate, and the heat stabilizer is tribasic lead sulfate.

[0014] Preferably, the method further comprises the following preparation method:

[0015] S1. First, put the base material and the conductive filler into a freezer and freeze them at low temperature for 2 hours. After taking them out, let them cool to room temperature naturally.

[0016] S2, placing the base material and the conductive filler at room temperature into an oven and heating them to 100° C., and then taking them out and naturally cooling them to room temperature;

[0017] S3, repeating the above S1-S2 two to three times, and then putting the base material, the conductive filler and all the raw materials into a blender for high-speed mixing and stirring to obtain a mixed raw material;

[0018] S4, putting the above mixed raw materials into an extruder for processing to obtain polymer granular materials.

[0019] The present invention also provides the use of the conductive polymer material in preparing electric vehicle batteries.

[0020] The beneficial effects of the present invention are:

[0021] The invention adopts ethylene-ethyl acrylate copolymer as a base material, a mixed powder consisting of 35% copper powder, 10% silver powder, 20% aluminum powder and 35% carbon black powder as a conductive filler, and a certain proportion of anti-wear agent, coupling agent, antioxidant, antistatic agent, light stabilizer, plasticizer and heat stabilizer are added. The prepared polymer material has good conductive performance. Compared with the existing polymer materials, the conductive performance is improved and the wear resistance, antistatic performance, antioxidant performance and heat dissipation performance are also excellent. In actual use, the polymer material is used in the preparation of batteries for new energy electric vehicles, which can greatly improve the battery's power storage capacity, thereby improving the cruising range of the electric vehicles. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Embodiment 1:

[0024] The present invention provides a conductive polymer material, the mass ratio of the polymer material includes: 60 parts of base material; 5 parts of conductive filler; 5 parts of wear-resistant agent; 5 parts of coupling agent; 5 parts of antioxidant; 5 parts of antistatic agent; 5 parts of light stabilizer; 5 parts of plasticizer; 5 parts of heat stabilizer;

[0025] Embodiment 2:

[0026] The present invention provides a conductive polymer material, the mass ratio of the polymer material includes: 70 parts of base material; 9 parts of conductive filler; 4 parts of wear-resistant agent; 3 parts of coupling agent; 3 parts of antioxidant; 3 parts of antistatic agent; 4 parts of light stabilizer; 4 parts of plasticizer; 4 parts of heat stabilizer;

[0027] Embodiment 3:

[0028] The present invention provides a conductive polymer material, the mass ratio of the polymer material includes: 55 parts of base material; 10 parts of conductive filler; 5 parts of wear-resistant agent; 5 parts of coupling agent; 5 parts of antioxidant; 5 parts of antistatic agent; 5 parts of light stabilizer; 5 parts of plasticizer; 5 parts of heat stabilizer;

[0029] Embodiment 4:

[0030] The present invention provides a conductive polymer material, the mass ratio of the polymer material includes: 65 parts of base material; 10 parts of conductive filler; 4 parts of wear-resistant agent; 3 parts of coupling agent; 3 parts of antioxidant; 3 parts of antistatic agent; 4 parts of light stabilizer; 4 parts of plasticizer; 4 parts of heat stabilizer;

[0031] Among them, the base material is ethylene-ethyl acrylate copolymer; the conductive filler is a mixed powder composed of 35% copper powder, 10% silver powder, 20% aluminum powder and 35% carbon black powder; the characteristic of ethylene-ethyl acrylate copolymer is that the ethyl acrylate content is between 15% and 30%, and it has excellent flexibility, thermal stability and excellent processing performance. The mixed powder composed of 35% copper powder, 10% silver powder, 20% aluminum powder and 35% carbon black powder has extremely strong conductivity, thereby giving the synthesized high-resolution material better conductivity.

[0032] Among them, in order to achieve the purpose of more wear resistance, this device adopts the following technical solutions: the wear-resistant agent is a mixed powder composed of 50% polytetrafluoroethylene and 50% molybdenum disulfide. Polytetrafluoroethylene is polymerized from a single tetrafluoroethylene monomer and has a waxy appearance and translucent properties. This material has extremely excellent heat and cold resistance and can operate stably in extreme temperature environments. It can be used for a long time from -180℃ to 260℃, thereby giving the synthesized high-resolution material better wear resistance and increasing its service life;

[0033] Among them, in order to achieve the purpose of better fusion connection of each component, the device adopts the following technical solution: the coupling agent is isopropyl tri (dioctyl pyrophosphate acyloxy) titanate;

[0034] Among them, in order to achieve better anti-oxidation purpose, the device adopts the following technical solution: the antioxidant is a mixture of 50% 2,6-di-tert-butyl-p-cresol and 50% triphenyl phosphite;

[0035] Among them, in order to achieve the purpose of better antistatic, the device adopts the following technical solutions: the antistatic agent is polyethylene glycol ester, which has good water solubility and good compatibility with many organic components, and has excellent lubricity, moisture retention and dispersibility, and can be used as an adhesive, antistatic agent and softener;

[0036] Among them, in order to achieve a more stable purpose, the device is implemented by the following technical scheme: the light stabilizer is 2-hydroxy-4-methoxybenzophenone, the plasticizer is tricresyl phosphate, and the heat stabilizer is tribasic lead sulfate.

[0037] The preparation process of the present invention is as follows:

[0038] S1. First, put the base material and the conductive filler into a freezer and freeze them at low temperature for 2 hours. After taking them out, let them cool to room temperature naturally.

[0039] S2, placing the base material and the conductive filler at room temperature into an oven and heating them to 100° C., and then taking them out and naturally cooling them to room temperature;

[0040] S3, repeating the above S1-S2 two to three times, and then putting the base material, the conductive filler and all the raw materials into a blender for high-speed mixing and stirring to obtain a mixed raw material;

[0041] S4. Put the mixed raw materials into an extruder for processing to obtain polymer granular materials, wherein the extrusion temperature is 200-270 degrees Celsius and the rotation speed is 200-250rpm.

[0042] The polymer materials prepared in the above-mentioned embodiments 1-4 were subjected to various performance tests, and the following data were obtained:

[0043]

[0044]

[0045] In summary, the polymer material prepared in Example 2 has better electrical conductivity, and also has excellent wear resistance, antistatic performance, antioxidant performance and heat dissipation performance. In actual use, the polymer material is used in the preparation of batteries for new energy electric vehicles, which can greatly improve the battery's power storage capacity, thereby increasing the cruising range of electric vehicles.

[0046] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention belongs to the scope of protection claimed by the present invention.

Claims

1. A conductive polymer material, characterized in that: The mass ratio of the polymer material includes: 55-70 parts of base material; 5-10 parts of conductive filler; 4-5 parts of wear-resistant agent; 3-5 parts of coupling agent; 3-5 parts of antioxidant; 3-5 parts of antistatic agent; 4-5 parts of light stabilizer; 4-5 parts of plasticizer; and 4-5 parts of heat stabilizer.

2. The conductive polymer material according to claim 1, characterized in that: The base material is ethylene-ethyl acrylate copolymer.

3. The conductive polymer material according to claim 1, characterized in that: The conductive filler is a mixed powder consisting of 35% copper powder, 10% silver powder, 20% aluminum powder and 35% carbon black powder.

4. The conductive polymer material according to claim 1, characterized in that: The wear-resistant agent is a mixed powder consisting of 50% polytetrafluoroethylene and 50% molybdenum disulfide.

5. The conductive polymer material according to claim 1, characterized in that: The coupling agent is isopropyl tri(dioctyl pyrophosphate) titanate.

6. The conductive polymer material according to claim 1, characterized in that: The antioxidant is a mixture of 50% 2,6-di-tert-butyl-p-cresol and 50% triphenyl phosphite.

7. The conductive polymer material according to claim 1, characterized in that: The antistatic agent is polyethylene glycol ester.

8. The conductive polymer material according to claim 1, characterized in that: The light stabilizer is 2-hydroxy-4-methoxybenzophenone, the plasticizer is tricresyl phosphate, and the heat stabilizer is tribasic lead sulfate.

9. The conductive polymer material according to claim 1, characterized in that: Also included is the following preparation method: S1. First, put the base material and the conductive filler into a freezer and freeze them at low temperature for 2 hours. After taking them out, let them cool to room temperature naturally. S2, placing the base material and the conductive filler at room temperature into an oven and heating them to 100° C., and then taking them out and naturally cooling them to room temperature; S3, repeating the above S1-S2 two to three times, and then putting the base material, the conductive filler and all the raw materials into a blender for high-speed mixing and stirring to obtain a mixed raw material; S4, putting the above mixed raw materials into an extruder for processing to obtain polymer granular materials.

10. Use of the conductive polymer material according to any one of claims 1 to 9 in the preparation of electric vehicle batteries.

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