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Dispersing agent and preparation method thereof, carbon nano tube dispersing slurry and preparation method thereof

A carbon nanotube and dispersant technology, applied in the field of electrochemical materials, can solve the problems of carbon nanotube thermoelectric properties and mechanical properties damage, carbon nanotube structure damage, performance decline, etc., to achieve wide application value, prevent aggregation, enhance compatibility effect

Inactive Publication Date: 2016-12-07
中山大桥化工集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the chemical modification method and the in-situ polymerization method are based on chemical treatment and modification of the surface of carbon nanotubes. This treatment has caused a certain degree of damage to the structure of carbon nanotubes. Both the thermoelectric and mechanical properties of the

Method used

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  • Dispersing agent and preparation method thereof, carbon nano tube dispersing slurry and preparation method thereof
  • Dispersing agent and preparation method thereof, carbon nano tube dispersing slurry and preparation method thereof
  • Dispersing agent and preparation method thereof, carbon nano tube dispersing slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of carbon nanotube dispersant A

[0053] (1) Preparation of Main Chain Skeleton Copolymer a-1

[0054] Add 1000g of n-butyl acetate into a reaction kettle equipped with a heating mantle, thermocouple, stirrer, reflux condenser and dropping funnel, heat to reflux, and drop the monomer mixture and initiator solution at a constant speed at the same time, wherein the monomer mixture Containing 500g of n-butyl methacrylate, 500g of glycidyl methacrylate and 230g of hydroxyethyl methacrylate, the initiator solution was prepared by dissolving 60g of Vazo 67 in 180g of n-butyl acetate to initiate polymerization and control dripping The acceleration guarantees that the 2h dropwise addition is completed. When the monomer solution and the initiator solution are added dropwise, continue to add the initiator solution formed by 15g Vazo 67 and 45g butyl acetate for 30 minutes. After the initiator solution is added dropwise, keep the temperature at reflux for 30 minutes t...

Embodiment 2

[0060] Preparation of carbon nanotube dispersant B

[0061] (1) Preparation of main chain skeleton copolymer b-1

[0062] Add 1100g of n-butyl acetate in a reaction kettle equipped with a heating mantle, thermocouple, stirrer, reflux condenser and dropping funnel, heat to reflux, and drop monomer mixture and initiator solution at a constant speed at the same time, wherein the monomer mixture Containing 568g of n-butyl methacrylate, 284g of glycidyl methacrylate, 260g of hydroxyethyl methacrylate and 208g of styrene, the initiator solution was prepared by dissolving 23.4g of Vazo 67 in 190g of n-butyl acetate. Polymerization reaction, control the rate of addition to ensure that the addition is completed within 2 hours. When the monomer solution and the initiator solution have been added dropwise, continue to add the initiator solution formed by 5.8g Vazo 67 and 48g butyl acetate for 30 minutes. After the initiator solution has been added dropwise, keep the temperature at reflu...

Embodiment 3

[0068] Preparation of carbon nanotube dispersant C

[0069] (1) Preparation of Main Chain Skeleton Copolymer c-1

[0070] Add 1100g of n-butyl acetate in a reaction kettle equipped with a heating mantle, thermocouple, stirrer, reflux condenser and dropping funnel, heat to reflux, and drop monomer mixture and initiator solution at a constant speed at the same time, wherein the monomer mixture Containing 568g n-butyl methacrylate, 426g glycidyl methacrylate, 260g-4-hydroxybutyl methacrylate, the initiator solution is prepared by dissolving 75g AIBN in 190g n-butyl acetate to initiate polymerization, Control the drop rate to ensure that the 2h drop is completed. When the monomer solution and the initiator solution have been added dropwise, continue to add the initiator solution formed by 19g AIBN and 45g butyl acetate for 30 minutes. After the initiator solution has been added dropwise, keep the temperature at reflux for 30 minutes to ensure that the polymerization reaction is c...

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Abstract

The invention belongs to the technical field of electrochemical materials, and discloses a dispersing agent special for a carbon nano tube with a comb-shaped graft polymer structure and a preparation method of the dispersing agent. The dispersing agent is obtained by grafting a side chain copolymer to a main chain framework copolymer; the main chain framework copolymer is an acrylate copolymer with a grafting group and an anchoring group; the side chain copolymer is grafting group-containing linear polyester. The invention further discloses carbon nano tube dispersing slurry prepared from the dispersing agent and a preparation method thereof. The dispersing agent disclosed by the invention is adsorbed to the surface of the carbon nano tube through the anchoring group; the grafted side chain of the dispersing agent supplies steric hindrance, so that aggregation of the carbon nano tube is effectively prevented, and the compatibility between a nano material and a substrate polymer is enhanced. The prepared carbon nano tube dispersing slurry can improve the physical and chemical properties of the coating or the resin substrate in the aspects of mechanical property, weather fastness, electricity resistance, heat resistance and corrosion resistance, and has a wide application value.

Description

technical field [0001] The invention belongs to the technical field of electrochemical materials, and in particular relates to a special dispersant for carbon nanotubes with a comb-shaped graft polymer structure and a preparation method thereof, and a carbon nanotube dispersion slurry made of the dispersant and a preparation method thereof . Background technique [0002] Carbon nanomaterials have aroused widespread interest in the field of coatings due to their outstanding physical and chemical properties. Nano-carbon materials have a high specific surface area and can form a network structure when the coating dries, thereby enhancing the adsorption between the coating and the substrate, making the coating denser, improving the adhesion of the coating to the substrate, and at the same time, helping to improve the adhesion of the coating to the substrate. It has excellent impact resistance, friction resistance, thermal conductivity, electrical conductivity, weather resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C09C1/44C09C3/10C08F220/18C08F220/32C08F220/28C08G63/08C08G63/06
CPCC08F220/18C08F220/1804C08F220/32C08F220/325C08G63/06C08G63/08C08G81/027C09C1/44C09C3/10C08F220/28C08F212/08
Inventor 胡志标李广王喜田姜云中王伟胡耀宇周锐贺刚何孟舟
Owner 中山大桥化工集团有限公司
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