阅读说明：本技术 一种用于固态电解电容的导电高分子材料 (Conductive polymer material for solid electrolytic capacitor ) 是由 陈晨 潘振炎 杨静如 贾明 张孔阳 于 2019-08-14 设计创作，主要内容包括：本发明公开了一种用于固态电解电容的导电高分子材料,包括导电高分子粒子、阳离子聚丙烯酰胺、导电性添加剂、交联引发促进剂、接枝剂、导电炭黑,所述导电高分子粒子为聚3,4-二氧乙基噻吩粒子、聚苯乙烯磺酸粒子中的一种或两种,所述接枝剂包括钛酸酯接枝剂、铝酸酯接枝剂、己内酰胺、丁二酸酐、马来酸酐、丁二酸、硬脂酸、硬脂酸锌、石油酸和十八烷酸中的一种或多种。本发明通过在现有导电高分子材料中添加阳离子聚丙烯酰胺和导电性添加剂,提高导电性,通过在添加交联引发促进剂、接枝剂增加体系的安全稳定性,提升产品的稳定性与可靠度,具有易加工、成本低等特点,可以普遍应用于固态电解电容行业。(The invention discloses a conductive polymer material for a solid electrolytic capacitor, which comprises conductive polymer particles, cationic polyacrylamide, a conductive additive, a crosslinking initiation promoter, a grafting agent and conductive carbon black, wherein the conductive polymer particles are one or two of poly (3, 4-dioxyethyl thiophene) particles and polystyrene sulfonic acid particles, and the grafting agent comprises one or more of a titanate grafting agent, an aluminate grafting agent, caprolactam, succinic anhydride, maleic anhydride, succinic acid, stearic acid, zinc stearate, petroleum acid and octadecanoic acid. According to the invention, the conductivity is improved by adding the cationic polyacrylamide and the conductivity additive into the existing conductive polymer material, the safety and stability of the system are improved by adding the crosslinking initiation accelerator and the grafting agent, the stability and reliability of the product are improved, and the conductive polymer material has the characteristics of easiness in processing, low cost and the like, and can be widely applied to the solid electrolytic capacitor industry.)

1. An electrically conductive polymer material for a solid electrolytic capacitor, characterized in that: the conductive polymer particles are one or two of poly 3, 4-dioxyethyl thiophene particles and polystyrene sulfonic acid particles, and the grafting agent comprises one or more of titanate grafting agent, aluminate grafting agent, caprolactam, succinic anhydride, maleic anhydride, succinic acid, stearic acid, zinc stearate, petroleum acid and octadecanoic acid.

2. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 10-70: 20-80: 0.2-5: 5-10.

3. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 2, wherein: the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 10-30: 20-40: 0.2-2: 5-8.

4. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 2, wherein: the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 25: 30: 2: 8.

5. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the conductive additive is silver powder.

6. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the crosslinking initiation accelerator is one or more of benzoyl peroxide, diethylenetriamine, cumyl peroxide and tert-butyl peroxide.

7. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the crosslinking initiation accelerant is benzoyl peroxide and diethylenetriamine, and the weight ratio of the crosslinking initiation accelerant to the diethylenetriamine is 1: 1.

8. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the crosslinking initiation accelerator is benzoyl peroxide.

9. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the conductive additive is a polar solvent or ionic liquid, and the polar solvent is one or more of trifluoroacetic acid, acetic acid, triethylamine, tributylamine and petroleum ether.

10. An electroconductive polymer material for a solid electrolytic capacitor as claimed in claim 1, wherein: the polar solvent is trifluoroacetic acid and acetic acid.

Technical Field

The invention relates to the field of solid electrolytic capacitors, in particular to a conductive polymer material for a solid electrolytic capacitor.

Background

The room temperature conductivity of conducting macromolecules can vary over the range of insulator semiconductor metallic states, which is not comparable to any material to date. The conductive polymer can be doped, dedoped and the doping and dedoping process is completely controllable, which is the unique property of the conductive polymer. The doping of the conductive polymer is essentially redox reaction, and the redox process is completely controllable. The conductive polymer has a pi-conjugated structure, so that the conductive polymer has the characteristic of high response speed. In conclusion, the conductive polymer is a novel functional material with excellent performance, and is also gradually applied to the field of solid electrolytic capacitors. However, the conductivity and safety stability of the conventional conductive polymer materials are in urgent need to be improved.

Disclosure of Invention

The purpose of the invention is as follows: in view of the above problems, the present invention provides a conductive polymer material for solid electrolytic capacitors, which has improved formulation to improve conductivity and safety.

The technical scheme is as follows:

A conductive polymer material for a solid electrolytic capacitor comprises conductive polymer particles, cationic polyacrylamide, a conductive additive, a crosslinking initiation promoter, a grafting agent and conductive carbon black, wherein the conductive polymer particles are one or two of poly (3, 4-dioxyethyl thiophene) particles and polystyrene sulfonic acid particles, and the grafting agent comprises one or more of a titanate grafting agent, an aluminate grafting agent, caprolactam, succinic anhydride, maleic anhydride, succinic acid, stearic acid, zinc stearate, petroleum acid and octadecanoic acid.

Specifically, the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 10-70: 20-80: 0.2-5: 5-10.

Further, the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 10-30: 20-40: 0.2-2: 5-8.

Further, the weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation promoter, the grafting agent and the conductive carbon black is 25: 30: 2: 8.

Preferably, the conductive additive is silver powder.

Preferably, the crosslinking initiation promoter is one or more of benzoyl peroxide, diethylenetriamine, cumyl peroxide, and t-butyl peroxide.

Preferably, the crosslinking initiation accelerator is benzoyl peroxide and diethylenetriamine, and the weight ratio of the benzoyl peroxide to the diethylenetriamine is 1: 1.

Preferably, the crosslinking initiation promoter is benzoyl peroxide.

Preferably, the conductive additive is a polar solvent or an ionic liquid, and the polar solvent is one or more of trifluoroacetic acid, acetic acid, triethylamine, tributylamine and petroleum ether.

Preferably, the polar solvent is trifluoroacetic acid or acetic acid.

Has the advantages that: compared with the prior art, the cationic polyacrylamide and the conductive additive are added into the existing conductive high polymer material, so that the conductivity of the conductive high polymer material is improved, the safety and stability of a system are improved by adding the crosslinking initiation accelerator and the grafting agent, the stability and reliability of a product are improved, and the conductive high polymer material has the characteristics of easiness in processing, low cost and the like, and can be widely applied to the industry of solid electrolytic capacitors.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to limit the scope of the invention, as various equivalent modifications of the invention will occur to those skilled in the art upon reading the present disclosure and fall within the scope of the appended claims.

a conductive polymer material for a solid electrolytic capacitor comprises conductive polymer particles, cationic polyacrylamide, a conductive additive, a crosslinking initiation promoter, a grafting agent and conductive carbon black. The conductive polymer particles are one or two of poly 3, 4-ethylenedioxythiophene particles and polystyrene sulfonic acid particles, and the grafting agent comprises one or more of titanate grafting agent, aluminate grafting agent, caprolactam, succinic anhydride, maleic anhydride, succinic acid, stearic acid, zinc stearate, petroleum acid and octadecanoic acid. The weight ratio of the conductive polymer particles, the cationic polyacrylamide, the conductive additive, the crosslinking initiation accelerator, the grafting agent and the conductive carbon black is 10-70: 20-80: 0.2-5: 5-10. The conductive additive is silver powder. The crosslinking initiation accelerator is one or more of benzoyl peroxide, diethylenetriamine, cumyl peroxide and tert-butyl peroxide. The conductive additive is a polar solvent or ionic liquid, and the polar solvent is one or more of trifluoroacetic acid, acetic acid, triethylamine, tributylamine and petroleum ether.