Oil-extended oxygenated graphene binary emulsion coprecipitated rubber and preparation method thereof

A technology of emulsion co-precipitation and graphene suspension, which is applied in the field of polymer-based nanocomposites, can solve problems such as uneven dispersion, flying dust, and increased energy consumption, and achieve easy industrialization, strong operability, and reduced energy consumption Effect

Inactive Publication Date: 2016-07-20
QINGDAO UNIV
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Problems solved by technology

When rubber / graphene oxide nanocomposites are prepared by emulsion flocculation or spray drying process, when the filling amount of graphene oxide is large, part of graphene oxide remains in the flocculation liquid, and the performance of the prepared composite material is poor.
However, when the mechanical mixing method is used, there will be phenomena such as flying dust, increased energy consumption, and uneven dispersion, so it is difficult to apply it to industrial production
The above methods all mix the rubber latex produced by a single variety of emulsion polymerization with graphene oxide, and do not involve the preparation of binary emulsion co-precipitation rubber

Method used

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  • Oil-extended oxygenated graphene binary emulsion coprecipitated rubber and preparation method thereof

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Embodiment 1-3

[0023] Examples 1-3: Taking aromatic oil-filled oxidized graphene styrene-butadiene rubber / nitrile rubber emulsion co-precipitated rubber as an example, the preparation method and properties of oil-extended graphene oxide binary emulsion co-precipitated rubber of the present invention are illustrated.

[0024] (1) Preparation of graphene oxide suspension: adding graphite into sulfuric acid with a concentration of 98%, stirring for 20 minutes, adding potassium permanganate thereto, controlling the reaction temperature to less than 10° C. and stirring in a water bath for 3 hours. Add a certain amount of deionized water to the reaction system for dilution, and continue stirring in a water bath. 20wt% hydrogen peroxide was added to the system, after 15 minutes of ultrasonic stripping, centrifugation and washing, the graphene oxide suspension was prepared.

[0025] (2) Preparation of emulsified oil: uniformly mix aromatic oil with water and emulsifier, disperse at 60° C. for 30 min...

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Abstract

The invention discloses an oil-extended oxygenated graphene binary emulsion coprecipitated rubber and preparation method thereof. The oil-extended oxygenated graphene binary emulsion coprecipitated rubber is prepared from, by weight, 100 parts of rubber emulsion, 1-40 parts of emulsifying oil, 1-20 parts of graphene oxide suspension liquid and 0.1-5 parts of an anti-ageing agent. The preparation method includes: adding the graphene oxide suspension liquid, the emulsifying oil and the anti-ageing agent into the rubber emulsion, and stirring for 10-30min at the temperature of 30-60 DEG C; adding a flocculating agent for flocculation, and dewatering and drying to obtain the oil-extended oxygenated graphene binary emulsion coprecipitated rubber. The method overcomes the defects of high energy consumption and nonuniformity in filler dispersion in preparation of binary rubber nanocomposite materials according to a traditional mechanical mixing method, and technical simplicity, low cost and easiness in popularization are realized. In a composite material prepared according to the method, graphene oxide is uniformly dispersed in a rubber matrix to realize effective reinforcement, antistatic and anti-corrosion functions.

Description

technical field [0001] The invention relates to the technical field of polymer-based nanocomposite materials, in particular to an oil-filled graphene oxide binary emulsion co-precipitation rubber and a preparation method thereof. Background technique [0002] Graphene oxide is an important derivative of graphene, and its structure is roughly the same as that of graphene. The polar functional groups on the two-dimensional base surface of graphene oxide, such as hydroxyl and epoxy groups and carbonyl and carboxyl groups at the edge, make oxidation Graphene has good hydrophilicity and is easy to form nanocomposites with some polar organic molecules and polymers. The hydrophilic groups of graphene oxide enhance the interfacial interaction between graphene oxide and matrix materials, improving the The mechanical properties of composite materials have broadened its development space, and are expected to become high-quality fillers for polymer nanocomposites. [0003] Combining ru...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L9/08C08L9/04C08K3/04
CPCC08L9/08C08L2201/04C08L2205/03C08L9/04C08K3/04
Inventor谷正宋国君王立李培耀李洋孙常勇宋文哲
OwnerQINGDAO UNIV