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Graphene-containing composite material as well as preparation method and application thereof

A graphene composite, composite material technology, applied in conductive materials, conductive materials, chemical instruments and methods, etc., can solve the problems of interface bonding conductivity, mechanical strength, flexibility, etc. Easy to operate, easy to operate, and the effect of reducing surface energy

Active Publication Date: 2015-02-25
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above research still fails to solve the problem of interface bonding and improve the conductivity, mechanical strength, flexibility and other issues at the same time.

Method used

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  • Graphene-containing composite material as well as preparation method and application thereof
  • Graphene-containing composite material as well as preparation method and application thereof
  • Graphene-containing composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Preparation of sulfonated graphene

[0058] Disperse carboxylated graphene in deionized water, ultrasonically disperse for 2 hours, and prepare a 10 mg / ml carboxylated graphene solution for subsequent use;

[0059] Dissolve 4-anilinesulfonic acid in deionized water to prepare a 20 mg / ml solution for subsequent use;

[0060] Mix the two solutions obtained above at a volume ratio of 2:3, add 1-3 drops of dibutyltin dilaurate as a catalyst, and heat and reflux at 95°C for 10 hours, lower the system temperature to 90°C, and then add to the mixed reaction Hydrazine hydrate was added to the system and reacted at a constant temperature for 2 hours, wherein the ratio of the amount of hydrazine hydrate added to the carboxylated graphene was 1.0ml:0.8g. Obtained sulfonated graphene at last, and carried out the pointer analysis of structure morphology and surface group to it, the result is as follows figure 1 , figure 1 It can be seen that sulfonated graphene is a very thin ...

Embodiment 2

[0066] 1) Preparation of sulfonated graphene

[0067] First, weigh a certain amount of carboxylated graphene and disperse it in deionized water, and disperse it ultrasonically for 4 hours to prepare a 10 mg / ml carboxylated graphene solution for subsequent use; secondly, weigh a certain amount of 4-anilinesulfonic acid derivative R-1 was dissolved in deionized water (can be heated to help dissolve), and a 20mg / ml solution was prepared for subsequent use; finally, the two solutions obtained above were mixed at a volume ratio of 2:3, and 1-3 drops of di Dibutyltin laurate was used as a catalyst, and the mixture was heated and refluxed at 95°C for 10 hours, then the temperature of the system was lowered to 90°C, and then a certain amount of hydrazine hydrate was added to the mixed reaction system, and the reaction was carried out at constant temperature for 2 hours. Obtain sulfonated graphene, wherein the ratio of the addition of the hydrazine hydrate to the carboxylated graphene ...

Embodiment 3

[0071] 1) Preparation of sulfonated graphene

[0072] First, weigh a certain amount of carboxylated graphene and disperse it in deionized water, and disperse it ultrasonically for 6 hours to prepare a 10 mg / ml carboxylated graphene solution for subsequent use; secondly, weigh a certain amount of 4-anilinesulfonic acid derivative R-2 was dissolved in deionized water (can be heated to help dissolve), and a 20mg / ml solution was prepared for subsequent use; finally, the two solutions obtained above were mixed at a volume ratio of 2:3, and 1-3 drops of di Dibutyltin laurate was used as a catalyst, and the mixture was heated and refluxed at 95°C for 10 hours, then the temperature of the system was lowered to 90°C, and then a certain amount of hydrazine hydrate was added to the mixed reaction system, and the reaction was carried out at constant temperature for 2 hours. Obtain sulfonated graphene, wherein the ratio of the addition of the hydrazine hydrate to the carboxylated graphene ...

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Abstract

The invention discloses a graphene-containing composite material as well as a preparation method and application thereof. The graphene-containing composite material comprises a composite functional material with a double-conductive channel and a polymer matrix, wherein the composite functional material with the double-conductive channel is sulfonated graphene surface grafted conductive polymer poly-3,4-(ethylenedioxythiophene), and the structure formula is as shown in formula I in the specification. The composite functional material with the double-conductive channel and the graphene-containing composite material can be used for preparing a piezoresistance response material, or an antistatic or electromagnetic shielding material and the like and have excellent piezoresistance response, piezoresistance repeatability and electromagnetic shielding effect. The graphene-containing composite material is simple and easy to operate, can be prepared in large scale and has excellent piezoresistance performance and sensitive piezoresistance response, the percolation threshold is 0.5Wt%, original performance of the polymer can be maintained, and an unstable conductive network system can be formed to be beneficial to improving the sensitivity of piezoresistance response.

Description

technical field [0001] The invention relates to a composite material containing graphene, a preparation method and application thereof. Background technique [0002] Graphene is a two-dimensional crystal with a hexagonal honeycomb structure composed of a single layer of carbon atoms. The ideal graphene structure is a planar hexagonal lattice, which can be regarded as a layer of exfoliated graphite molecules, each carbon atom is sp2 hybridized, and contributes electrons on the remaining one p orbital to form a large π bond, π Electrons can move freely, giving graphene good electrical conductivity. The two-dimensional graphene structure can be regarded as the basic unit that forms all sp2 hybridized carbonaceous materials. The carbon-carbon bond length in graphene is about 0.143nm, and there are three σ bonds in each lattice, and the links are very strong, forming a stable hexagonal shape. The thickness of single-layer graphene is only 0.35nm, which is about 1 / 200,000th of ...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08G61/12C08K9/04C08K3/04C08L75/04C08L7/00C08L25/06C08L23/06C08L23/12C08L27/08C08L67/02C08L69/00C08L83/04C09D165/00C09D5/24C08J7/044
CPCC09D5/24C09D165/00C08L7/00C08L65/00C08L75/04C08J2339/04C08K3/042C09D127/08C09D5/34C09D167/00C09D169/00C09D7/65C08G61/126H01B1/127H01B1/128H01B1/24C08G2261/3223C08G2261/43C08G2261/512C08G2261/90C08G2261/964C01B32/194H01G11/32H01G11/86C08G83/001C08G2261/514C08G2261/77H05K9/0081C08K2201/001C08J7/0427C08J7/044C08L25/06C08K9/04C08G2261/3243C09D187/005H01C10/103C08L67/02C08L69/00
Inventor 周超陈思浩楼建中陈志昌徐刚杨春宇朱同贺王继虎邢晨晨包一鸣
Owner SHANGHAI UNIV OF ENG SCI
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