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A graphene oxide/fe 3 o 4 Base composite conductive rubber and preparation method thereof

A composite conductive and graphene technology, applied in the field of rubber, can solve the problems of poor processability and physical properties of composite materials, degradation of rubber mechanical properties, high cost, etc., and achieve the effect of wide application range, low cost, and improved conductivity

Active Publication Date: 2017-05-24
XIAMEN WAEXIM RUBBER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional carbon-based conductive fillers, such as carbon black and carbon nanotubes, have defects: carbon black needs a high filling amount to improve conductivity, resulting in poor processing performance and physical properties of composite materials; although carbon nanotubes have a large aspect ratio, However, it is easy to reunite and the cost is high, which limits its application
For example He Shiquan et al. (Fe 3 o 4 Mechanical and tribological properties of composite nitrile rubber[J]. Journal of Lanzhou University: Natural Science Edition, 2008,44(2):132-136.) Nano Fe 3 o 4 Filling in the nitrile rubber makes the nitrile rubber exhibit good anti-wear and anti-friction properties, but simply adding nano-Fe 3 o 4 As a filling material, the mechanical properties of rubber will be slightly reduced

Method used

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  • A graphene oxide/fe <sub>3</sub> o <sub>4</sub> Base composite conductive rubber and preparation method thereof
  • A graphene oxide/fe <sub>3</sub> o <sub>4</sub> Base composite conductive rubber and preparation method thereof
  • A graphene oxide/fe <sub>3</sub> o <sub>4</sub> Base composite conductive rubber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Graphene oxide and Fe 3 o 4 Preparation of conductive filler

[0027] Take 2.44g graphene oxide and dissolve it in 120mL deionized water, add 0.09mol of FeCl 3 ·6H 2 0﹑0.15mol of NaAc was dissolved in the above solution in turn, stirred for 2 hours, then transferred to a high-pressure sealed reactor, and then transferred to an oven and heated to 160°C for 12 hours. After taking out the reaction kettle, cool it to room temperature, wash the obtained black solution with alcohol and deionized water 2 to 3 times to remove the organic matter in the sample, and finally freeze-dry it in a freeze dryer (-70°C) to obtain a conductive filler.

[0028] The resulting graphene oxide / Fe 3 o 4 The SEM image of the conductive filler is as follows figure 1 As shown, Fe 3 o 4 The particle size is about 500nm, the shape is regular, and the particle size is uniform. Graphene oxide wrapped in Fe 3 o 4 surface, the two form a good conductive filler. figure 2 Graphene oxide / Fe 3...

Embodiment 2～3

[0030] With reference to Example 1 process, change the charging capacity of graphene oxide in embodiment 1, and then make graphene oxide and Fe 3 o 4 Conductive fillers with different mass ratios, the specific ratio is as follows:

[0031] Graphene oxide / g FeCl 3 ·6H 2 O / g

Embodiment 4

[0033] Graphene oxide / Fe 3 o 4 Preparation of matrix composite conductive rubber

[0034] Solution blending: get 20 parts of graphene oxide Fe obtained in Example 1 3 o 4 The conductive filler was placed in tetrahydrofuran, and mechanically stirred for 8 hours under ultrasonic conditions (80W), so that the conductive filler was dispersed in tetrahydrofuran to obtain solution A. Put 100 parts of nitrile rubber matrix into tetrahydrofuran, and dissolve it under mechanical stirring condition, and then obtain rubber solution B. Mix A and B, and mechanically stir for 20 hours under ultrasonic conditions to make them evenly mixed. Finally, cast the mixture of A and B to form a film, and dry it to a constant weight in a vacuum drying oven to obtain a composite rubber film. The drying temperature is 80°C, and the time is It is 24h.

[0035] Melt blending: Put 3 parts of vulcanizing agent DCP in acetone, mix evenly and add dropwise on the above composite rubber film. After the ace...

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Abstract

The invention discloses graphene oxide / Fe3O4 based composite conductive rubber and a preparation method therefor. The method comprises the steps of dispersing graphene oxide, NaAc and FeCl3.6H2O into deionized water, preparing graphene oxide / Fe3O4 conductive filler by adopting a hydrothermal method, then, mixing a rubber matrix and the graphene oxide / Fe3O4 conductive filler by adopting a solution blending method, uniformly dispersing the conductive filler into the rubber matrix through ultrasonic dispersion and mechanical stirring methods, carrying out vacuum drying, then, adding a vulcanizing agent into the vacuum-dried dispersion, and carrying out procedures such as double-roller open mill mixing, plate vulcanizing machine shaping and the like, thereby preparing the composite conductive rubber with electric conductivity and wear resistance. According to the graphene oxide / Fe3O4 based composite conductive rubber and the preparation method therefor, the preparation process is simple, the industrialization is facilitated, the range of adaptation is wide, the application of the rubber under working conditions such as prevention of static electricity, dynamic sliding, vibrating and the like can be expanded, and the economic and social benefits are good.

Description

technical field [0001] The invention belongs to the technical field of rubber, in particular to a graphene oxide / Fe 3 o 4 Base composite conductive rubber and preparation method thereof. Background technique [0002] For rubber, it is a good electrical insulator. In order to make the rubber material obtain conductivity and meet the application of rubber in various fields, we usually add conductive fillers to the rubber matrix to give it conductive function. At present, the research on improving the performance of conductive rubber mainly focuses on the modification of the rubber matrix, the improvement of the conductive filler, and the improvement of the preparation process. As the functional body of conductive rubber, conductive filler has the greatest impact on the conductivity of the product. Generally speaking, the functional body is mainly divided into two types: carbon-based conductive fillers and metal-based conductive fillers. [0003] Traditional carbon-based c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/02C08L9/06C08K9/10C08K3/22C08K3/04
Inventor 戴李宗兰加水吴悦广
Owner XIAMEN WAEXIM RUBBER CO LTD