Graphene-containing fluororubber nanocomposite with low gas permeability and preparation method

A nano-composite material and graphene technology, applied in the field of rubber materials, can solve the problems of difficult to avoid solvent residues, insufficient process stability, poor graphene dispersibility, etc. Effect

Active Publication Date: 2015-12-23
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
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Problems solved by technology

[0004] Chinese patent CN101558455A discloses "functional graphene-rubber nanocomposite material". The composite material is composed of functionalized graphene and matrix material. The functionalized surface-treated graphene and rubber are used to compound, the operation is complicated, and the process stability is insufficient.
Patent CN103937265A discloses a graphene-silicone rubber composite material and its preparation method. The graphene without pre-dispersion treatment is composited with rubber by mechanical means, and the dispersion of graphene is poor.
Patent CN103408855A discloses a graphene oxide-containing rubber composite material, which uses chlorosulfonated polyethylene, ethylene-vinyl acetate rubber, and hydrogenated nitrile rubber blended rubber as a matrix to prepare graphene oxide rubber by emulsion blending. For composite materials, it is difficult to avoid solvent residue in this method, which affects the material performance, and the process is complicated and engineering is difficult

Method used

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  • Graphene-containing fluororubber nanocomposite with low gas permeability and preparation method

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Experimental program
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Effect test

Embodiment 1

[0032] The low gas permeability graphene / fluororubber nanocomposite material consists of 100 parts by mass of fluororubber, 20 parts of graphene, 0 parts of carbon black, 0 parts of graphite, 3 parts of magnesium oxide, and 1 part of calcium hydroxide. 1 part of calcium oxide, 3.4 parts of vulcanizing agent bisphenol AF, and 0.6 part of BPP.

[0033] Put graphene, carbon black, graphite, and acid absorbing agent into an asymmetric double planetary mixer, and stir at 20r / min for 8h; then immediately add the powder and fluororubber to the internal mixer, and banbury at 60°C for 200min .

[0034] Then, the nanocomposite blend and vulcanizing agent were evenly mixed on a two-roller rubber mixer, and vulcanized on a flat vulcanizer at 175 ° C and a pressure of 10 MPa for 15 minutes to obtain graphene-containing fluororubber nanocomposites. The nano-composite material is subjected to various performance tests according to the corresponding national standards.

Embodiment 2

[0036] The graphene-containing fluorine rubber nanocomposite material consists of 100 parts by mass of fluorine rubber, 0.05 parts of graphene, 8 parts of carbon black, 20 parts of graphite, 2 parts of magnesium oxide, 1 part of calcium hydroxide, and 1 part of calcium oxide 1 part, vulcanizing agent bisphenol AF3.4 part, BPP0.6 part.

[0037] Put graphene, carbon black, graphite, and acid absorbing agent into an asymmetric double planetary mixer, and stir for 4 hours at 60r / min; put the powder into an internal mixer together with fluororubber after 2 hours, and banbury at 100°C 100min.

[0038] Then, the nanocomposite blend and vulcanizing agent were evenly mixed on a two-roller rubber mixer, and vulcanized on a flat vulcanizer at 175°C and a pressure of 10MPa for 15min to obtain graphene-containing fluorine rubber nanocomposites. The nano-composite material is subjected to various performance tests according to the corresponding national standards.

Embodiment 3

[0040] The fluororubber nano-composite material containing graphene consists of 100 parts by mass of fluororubber, 0.1 part of graphene, 25 parts of carbon black, 16 parts of graphite, 4 parts of magnesium oxide, and 1 part of vulcanizing agent 3# vulcanizing agent , 1.2 parts of hydroquinone, and 0.5 parts of BPP.

[0041] Put graphene, carbon black, graphite, and acid absorbing agent into an asymmetric double planetary mixer, and stir at 60r / min for 4h; then immediately add the powder and fluororubber to the internal mixer, and banbury at 110°C for 100min .

[0042] Then, the nanocomposite blend and vulcanizing agent were evenly mixed on a two-roller rubber mixer, and vulcanized on a flat vulcanizer at 160 ° C and a pressure of 10 MPa for 15 minutes to obtain graphene-containing fluororubber nanocomposites. The nano-composite material is subjected to various performance tests according to the corresponding national standards.

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Abstract

The invention belongs to the field of rubber materials and relates to a graphene-containing fluororubber nanocomposite with low gas permeability and a preparation method, in particular to a nanocomposite formed by graphene and fluororubber. The graphene-containing fluororubber nanocomposite with low gas permeability comprises the fluororubber, the graphene, carbon black, graphite, an acid acceptor and a vulcanizing agent. The graphene is subjected to pre-dispersing treatment, and the dispersity of the graphene in the fluororubber is improved. The unique lamellar structure of the graphene can form a grid structure in the fluororubber to block gas effectively. The graphite has similar lamellar structure and is mixed with the graphene for combined action, so that gas grids in different sizes can be formed in the material, and the gas permeability of the material is reduced. A low-speed blender is adopted to perform pre-dispersing treatment on powder, and through mechanical agitation and interaction of the powder, the dispersity is improved while the lamellar structure of the graphene is guaranteed.

Description

technical field [0001] The invention relates to the field of rubber materials, and relates to a low-permeability graphene-containing fluororubber nanocomposite material and a manufacturing method, in particular to a nanocomposite material composed of graphene and fluororubber. Background technique [0002] Graphene is a flaky two-dimensional crystal in which carbon atoms are arranged in sp2 hybridized monoatomic layers in a hexagonal annular honeycomb shape. The theoretical thickness is only 0.335nm, the modulus can be as high as 1TPa, the strength can reach 130GPa, and the specific surface area can reach 2630m2g-1, with ultra-high thermal conductivity (3000-5000Wm-1K-1) and electrical conductivity (200000cm2V-1s-1), its application potential is immeasurable. [0003] Fluorine rubber is one of the elastomer materials with the best oil resistance at present. It has excellent high temperature resistance, oil resistance, strong oxidant resistance and fuel performance, and has e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08K13/06C08K9/00C08K3/04C08K3/22
Inventor 赵艳芬王珊苏正涛
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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