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Graphene silver nanowire composite slurry and preparation method thereof

A technology of silver nanowires and composite slurry, which is applied in fireproof coatings, conductive coatings, antifouling/underwater coatings, etc., can solve the problems of non-environmental protection, easy aggregation of silver powder, pollution, etc., and achieve far-infrared heating effect Improved performance, improved electrical conductivity, and good application prospects

Active Publication Date: 2017-09-05
合肥微晶材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problems existing in the conductivity of conductive silver paste: 1. Because the silver powder is easy to agglomerate, 2. The existence of non-conductive substance glass powder
[0007] In addition, the commonly used organic solvents in conductive pastes are epoxy resins, phenolic resins, polyvinyl acetate, and polyamide resins. These solvents are not easily soluble in water, polluting, toxic, and do not have good environmental performance.

Method used

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  • Graphene silver nanowire composite slurry and preparation method thereof
  • Graphene silver nanowire composite slurry and preparation method thereof
  • Graphene silver nanowire composite slurry and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] The present embodiment prepares graphene silver nanowire composite slurry according to the following steps:

[0037] a. According to the ratio, take 35g of graphene powder, 5g of carbon black, 2g of dispersant hydroxypropyl methylcellulose and 30g of water, stir and mix for 0.5h, then ultrasonically disperse for 1h, then add 20g of water-based polyurethane resin, and put it in a ball mill Disperse by high-speed ball milling, and finally filter through a 250-mesh mesh cloth to obtain mixed slurry A;

[0038] b. Add 10g of 10mg / mL silver nanowire dispersion (100nm in diameter, 50-100μm in length), 2g of water-based epoxy resin and 2g of water-based acrylic resin into a vacuum mixer for vacuum defoaming and mixing evenly to obtain a mixed solution B;

[0039] c. Add the mixed slurry A to the vacuum mixer, and under continuous stirring, add a pH buffer to adjust the pH to 8, then add the mixed solution B and 2 g of the curing agent hexamethylenediamine in sequence, and cont...

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Abstract

The invention discloses graphene silver nanowire composite slurry and a preparation method thereof. The graphene silver nanowire composite slurry is prepared by jointly using silver nanowire, graphene powder and carbon black. High-adding-quantity graphene is matched with low-adding-quantity silver nanowire and carbon black, so that electroconductivity, electromagnetic shielding effect, sterilizing effect and far infrared heating effect are improved substantially, and excellent effect is realized; a water-soluble solvent is adopted, so that the composite slurry has the advantage of being free of environment pollution.

Description

technical field [0001] The invention relates to the technical field of conductive paste, in particular to a graphene-silver nanowire composite paste and a preparation method thereof. Background technique [0002] Traditional conductive pastes are basically prepared by adding conductive unit powders to polymers in the form of fillers. The conductive unit powders mainly include carbon, metal and composites. In order to improve the performance, the improvement of conductive fillers and the exploration and application of new materials are the development trend of research on conductive paste at home and abroad. [0003] Conductive carbon paste is prepared by mixing carbon-based materials and polymer resins. It has good conductivity and is widely used in communication products (mobile phones), computers, portable electronic products, consumer electronics, network hardware (servers, etc.), medical Electronic equipment such as instruments, home electronics and aerospace and defens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/24C09D5/14C09D7/12
CPCC08K2003/0806C08K2201/011C08K2201/014C08L2201/08C08L2205/035C09D5/14C09D5/18C09D5/24C09D175/04C08L1/284C08L63/00C08L33/00C08K13/04C08K7/00C08K3/08C08K3/04
Inventor 张梓晗吕鹏陶豹
Owner 合肥微晶材料科技有限公司
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