CN109054365A - A kind of preparation method of solid phase graphene nylon Heat Conduction Material - Google Patents

A kind of preparation method of solid phase graphene nylon Heat Conduction Material Download PDF

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CN109054365A
CN109054365A CN201810795269.1A CN201810795269A CN109054365A CN 109054365 A CN109054365 A CN 109054365A CN 201810795269 A CN201810795269 A CN 201810795269A CN 109054365 A CN109054365 A CN 109054365A
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nylon
graphene
solid phase
coupling agent
preparation
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CN109054365B (en
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郑丛丛
韩立静
仲玉斐
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Qingdao Ten Thousand Rubber Plastic Technology Co Ltd
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Qingdao Ten Thousand Rubber Plastic Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G83/00Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
    • C08G83/001Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • C08K3/042Graphene or derivatives, e.g. graphene oxides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances
    • C08K9/06Ingredients treated with organic substances with silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08Materials not undergoing a change of physical state when used
    • C09K5/14Solid materials, e.g. powdery or granular

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Combustion & Propulsion (AREA)
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Abstract

A kind of preparation method of solid phase graphene nylon Heat Conduction Material belongs to graphene polymer field of nanocomposite materials, and preparation method is the following steps are included: (1) is dried after being surface-treated graphene slurries with coupling agent to constant weight;(2) with the dry nylon of circulating-heating nitrogen;(3) by after surface treatment graphene and nylon be added in solid phase device, heating and temperature control is at 160-300 DEG C, mixing speed control obtains thermal conductivity graphene nylon material using gradually heating mode solid phase 10-24h in 2000-6000rpm.Graphene is grafted on nylon molecules chain during nylon tackified polymer in the present invention, the graphene of large specific surface area can be used as the middle hinge belt at nylon crystalline region and amorphous area position, reduce the interface resistance of heat transfer, promote material conducts heat ability, the mechanical performance of material is also improved simultaneously, it may be used on that there are certain thermally conductive or heat sinking function components, expand the application range of nylon material.

Description

A kind of preparation method of solid phase graphene nylon Heat Conduction Material
Technical field
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present invention, it is multiple to belong to graphene polymer nanometer Condensation material field, graphene/nylon composite materials of this method preparation have high viscous, high-intensitive, good thermal conductivity.
Background technique
Graphene is by single layer sp2Hydbridized carbon atoms arrange the honeycomb hexaplanar two dimensional crystal to be formed, flat in two dimension On face, sp2The carbon atom of hydridization is connect by strong σ key with three adjacent carbon atoms, and remaining P electron orbit is perpendicular to stone Black alkene plane forms big pi bond with the atom of surrounding, and graphene is made to have good conductive and heat-conductive and mechanical performance, graphene Room temperature thermal conductivity is 4.84 × 103-5.3×103W/ (m.K), graphene are that thermal conductivity is highest in several allotropes of carbon Material.
Nylon as engineering plastics has high mechanical strength, and coefficient of friction is low, self-lubrication, shock absorption and sound-deadening properties Good, excellent barrier property, it is heat-resisting, wear-resistant, chemical resistance is good the advantages that, automobile industry, electronics can be widely used in The fields such as electrical communication field, film packaging field, military affairs and aerospace industry, rail traffic industry;It is related to heat conduction and heat radiation When function, common nylon material can not meet requirement, need to add heat filling, and the best material of heating conduction is stone at present Black alkene, graphene, which is added to, needs special process conditions in nylon material, simple melt blending adding manner will affect stone Black alkene is evenly dispersed in nylon, to affect the heat-conducting effect of graphene nylon material.
Heat transfer carrier is phonon, and the thermal coefficient of polymer is related with its crystalline order, in nylon resin matrix, Hemicrystalline characteristic determines that the heat-transfer effect of its crystalline region is higher than amorphous area, and there are interfaces between the crystalline region and amorphous area of nylon Thermal resistance, the thermal coefficient for finally directly affecting nylon do not improve.Due to the oxygen-containing functional group energy and nylon molecules on graphene Amino End Group on chain and carboxyl end group reaction, graphene is grafted on nylon molecules chain, the graphene of large specific surface area across Between nylon crystalline region and amorphous area.Graphene uniform is dispersed in nylon matrix, can become nylon composite materials in crystalline region with The middle hinge belt of amorphous area, reduces interface resistance when heat transfer.The mutual overlap joint of graphene film interlayer forms thermally conductive network chain, To promote the thermal coefficient of graphene nylon composite materials.
Summary of the invention
The present invention provides a kind of preparation methods of solid phase graphene nylon Heat Conduction Material, by solid phase side Method, by the nylon of graphene dispersion to low viscosity, by being heated to nylon glass temperature or more and fusing point following temperature model Interior mode is enclosed, graphene is grafted in Amino End Group or the carboxyl end group of nylon amorphous area position strand, graphene in grafting Nylon material intensity and thermal conductance all increase.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of preparation method of solid phase graphene nylon Heat Conduction Material, comprising the following steps:
(1) coupling agent is added in graphene slurries, Dispersion on surface is carried out to graphene in high-speed shearing emulsion machine Then processing, shear velocity 2000-12000r/min, time 1-2h carry out being dried under vacuum to constant weight, drying temperature is 80-100℃;The additive amount of coupling agent is the 0.5-2wt% of graphene solid content.
(2) nylon is added in drying device, the top and bottom of drying device is passed through respectively to nylon using nitrogen It is dried, nitrogen circulation enters, and nitrogen temperature control is at 120-200 DEG C, drying time 6-12h.
(3) graphene, nylon are added in solid phase device after drying, lead to circulating nitrogen gas and carries out solid polycondensation It closes, using gradually heating mode solid phase 10-24h, obtains high viscous graphene nylon material, polymerization temperature control range 160- 300 DEG C, polymerization mixing speed control exists: 2000-6000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon material.
Coupling agent of the present invention is at least one of silane coupling agent, titanate coupling agent, silane coupling agent packet Containing γ (2,3- glycidoxy) propyl trimethoxy silicane, gamma-aminopropyl-triethoxy-silane, N- (mono- aminoethyl of β)-γ- Aminopropyl front three (second) oxysilane, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-diethylenetriamine propylene three The silane coupling agents such as Ethoxysilane;Titanate coupling agent includes two oleic acid acyloxy of isopropyl (dioctyl phosphoric acid acyloxy) titanium Acid esters, isopropyl three (dioctyl phosphoric acid acyloxy) titanate esters, three iso stearate isopropyl titanates, bis- (two octyloxy pyrophosphoric acids Ester group) titanate coupling agents such as ethylene titanate esters, tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters.
Nylon resin of the present invention is nylon 6, nylon66 fiber, nylon 46, nylon 610, the nylon 612, Buddhist nun of low viscosity At least one of dragon 11, nylon 12, nylon 1010, nylon 1212, nylon 6T, nylon 9 T, nylon 10T.
Graphene slurries of the present invention be graphene slurries, biomass graphene slurries, Graphene derivative slurry The mixing of one or more of liquid, graphene film diameter >=5.0 μm, thickness≤3.0nm, oxygen-containing functional group content is on graphene 10-20%.
Present invention is characterized in that by the method for solid phase, by being distributed in nylon for graphene uniform, solid polycondensation During conjunction, the oxygen-containing functional group on graphene is reacted with nylon amorphous area position molecular chain-end amino or carboxyl end group, by graphite Alkene is grafted on nylon molecules chain, and for the graphene of large specific surface area across between the crystalline region and amorphous area of nylon, graphene can Using the middle hinge belt as crystalline region in nylon and amorphous area position, interface resistance when heat transfer is reduced, the thermally conductive of material is promoted Property, while also improving the mechanical property of material.
Specific embodiment
Below with reference to embodiment, the invention will be further described, is not intended to limit the scope of the invention.
Embodiment 1
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present embodiment, comprising the following steps:
(1) γ-diethylenetriamine propylene triethoxysilane coupling agent is added in graphene slurries, in high speed shear Dispersion on surface processing is carried out to graphene in mulser, then shear velocity 8000r/min, time 1.5h carry out vacuum To constant weight, drying temperature is 90 DEG C for drying;The additive amount of coupling agent is the 0.5wt% of graphene solid content.
(2) nylon 6 is added in drying device, nitrogen is passed through the top and bottom of drying device, using circulating nitrogen gas Nylon 6 is dried, nitrogen temperature is controlled at 130 DEG C, dry 10h.
(3) by the graphene that piece diameter is 8 μm, content is 0.3% after drying, viscosity 2.0, content are 99.7% Buddhist nun Dragon 6 is added in solid phase device, and logical circulating nitrogen gas is carried out solid phase and obtained using gradually heating mode solid phase 18h To the viscous graphene nylon material of height, polymerization temperature control range is 160-180 DEG C, mixing speed 5000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon 6.
Test result: thermal conductivity is 1.42W/ (m.K)
Embodiment 2
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present embodiment, comprising the following steps:
(1) γ-diethylenetriamine propylene triethoxysilane coupling agent is added in graphene slurries, in high speed shear Dispersion on surface processing is carried out to graphene in mulser, then shear velocity 8000r/min, time 1.5h carry out vacuum To constant weight, drying temperature is 90 DEG C for drying;The additive amount of coupling agent is the 0.5wt% of graphene solid content.
(2) nylon 6 is added in drying device, nitrogen is passed through the top and bottom of drying device, using circulating nitrogen gas Nylon 6 is dried, nitrogen temperature is controlled at 130 DEG C, dry 10h.
(3) by the graphene that piece diameter is 20 μm, content is 0.3%, viscosity 2.0, content 99.7% after drying Nylon 6 is added in solid phase device, is led to circulating nitrogen gas and is carried out solid phase, using gradually heating mode solid phase 18h, High viscous graphene nylon 6 is obtained, polymerization temperature control range is 160-180 DEG C, mixing speed 5000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon 6.
Test result: thermal conductivity is 1.65W/ (m.K)
Embodiment 3
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present embodiment, comprising the following steps:
(1) gamma-aminopropyl-triethoxy-silane coupling agent is added in graphene slurries, in high-speed shearing emulsion machine Dispersion on surface processing is carried out to graphene, then shear velocity 8000r/min, time 2h carry out being dried under vacuum to constant weight, Drying temperature is 90 DEG C;The additive amount of coupling agent is the 0.5wt% of graphene solid content.
(2) nylon 6 is added in drying device, nitrogen is passed through the top and bottom of drying device, using circulating nitrogen gas Nylon 6 is dried, nitrogen temperature is controlled at 130 DEG C, dry 10h.
(3) be 20 μm by piece diameter after drying, content is 0.5% graphene, and viscosity 2.0, content are 99.5% Nylon 6 is added in solid phase device, is led to circulating nitrogen gas and is carried out solid phase, using gradually heating mode solid phase 20h, High viscous graphene nylon 6 is obtained, polymerization temperature control range is 160-180 DEG C, mixing speed 5000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon 6.
Test result: thermal conductivity is 2.25W/ (m.K)
Embodiment 4
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present embodiment, comprising the following steps:
(1) gamma-aminopropyl-triethoxy-silane coupling agent is added in graphene slurries, in high-speed shearing emulsion machine Dispersion on surface processing is carried out to graphene, then shear velocity 8000r/min, time 2h carry out being dried under vacuum to constant weight, Drying temperature is 90 DEG C;The additive amount of coupling agent is the 0.5wt% of graphene solid content.
(2) nylon66 fiber is added in drying device, nitrogen is passed through the top and bottom of drying device, using circulating nitrogen gas Nylon66 fiber is dried, nitrogen temperature is controlled at 140 DEG C, dry 10h.
(3) be 20 μm by piece diameter after drying, content is 0.5% graphene, and viscosity 2.0, content are 99.5% Buddhist nun Dragon 66 is added in solid phase device, leads to circulating nitrogen gas and carries out solid phase, using gradually heating mode solid phase 20h, High viscous graphene nylon66 fiber is obtained, polymerization temperature control range is 180-200 DEG C, mixing speed 5000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon66 fiber.
Test result: thermal conductivity is 2.32W/ (m.K)
Embodiment 5
A kind of preparation method of solid phase graphene nylon Heat Conduction Material of the present embodiment, comprising the following steps:
(1) gamma-aminopropyl-triethoxy-silane coupling agent is added in graphene slurries, in high-speed shearing emulsion machine Dispersion on surface processing is carried out to graphene, then shear velocity 6000r/min, time 1.5h carry out being dried under vacuum to perseverance Weight, drying temperature are 90 DEG C;The additive amount of coupling agent is the 0.5wt% of graphene solid content.
(2) nylon 6 is added in drying device, nitrogen is passed through the top and bottom of drying device, using circulating nitrogen gas Nylon 6 is dried, nitrogen temperature control is at 130 DEG C, drying time 10h.
(3) be 30 μm by piece diameter, content is 0.5% graphene, it is solid that viscosity 2.0, content are that 99.5% nylon 6 is added to In phase-polymerization device, lead to circulating nitrogen gas and carry out solid phase, using gradually heating mode solid phase 20h, obtains high viscous graphite Alkene nylon 6, polymerization temperature control range are 160-180 DEG C, mixing speed 5000rpm.
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon 6.
Test result: thermal conductivity is 2.46W/ (m.K)
Description of the invention and application be it is illustrative, it is not intended to limit the scope of the present invention to the above embodiment, Therefore, present invention is not limited by this embodiment, what any technical solution obtained using equivalence replacement was protected in the present invention In range.

Claims (4)

1. a kind of preparation method of solid phase graphene nylon Heat Conduction Material, which is characterized in that the preparation method include with Lower step:
(1) coupling agent is added in graphene slurries, Dispersion on surface processing is carried out to graphene in high-speed shearing emulsion machine, Shear velocity is 2000-12000r/min, time 1-2h, then carries out being dried under vacuum to constant weight, drying temperature 80-100 ℃;The additive amount of coupling agent is the 0.5-2wt% of graphene solid content;
(2) nylon is added in drying device, nylon is carried out respectively using the top and bottom that nitrogen is passed through drying device It is dried, nitrogen circulation enters, and nitrogen temperature control is at 120-200 DEG C, drying time 6-12h;
(3) graphene, nylon are added in solid phase device after drying, lead to circulating nitrogen gas and carry out solid phase, adopts With gradually heating mode solid phase 10-24h, high viscous graphene nylon material, polymerization temperature control range 160-300 are obtained DEG C, polymerization mixing speed control exists: 2000-6000rpm;
(4) the graphene nylon after polymerization is cooled down, obtains thermal conductivity graphene nylon material.
2. a kind of preparation method of solid phase graphene nylon Heat Conduction Material according to claim 1, it is characterised in that: step Suddenly coupling agent described in (1) is at least one of silane coupling agent, titanate coupling agent, and silane coupling agent includes: γ (2, 3- glycidoxy) propyl trimethoxy silicane, gamma-aminopropyl-triethoxy-silane, N- (mono- aminoethyl of β)-γ-aminopropyl three First (second) oxysilane, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-diethylenetriamine propylene triethoxysilicane The silane coupling agents such as alkane;Titanate coupling agent includes: two oleic acid acyloxy of isopropyl (dioctyl phosphoric acid acyloxy) titanate esters, different Propyl three (dioctyl phosphoric acid acyloxy) titanate esters, three iso stearate isopropyl titanates, bis- (two octyloxy pyrophosphoric acid ester groups) second Support the titanate coupling agents such as titanate esters, tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters.
3. a kind of preparation method of solid phase graphene nylon Heat Conduction Material as described in claim 1, it is characterised in that: step Suddenly nylon described in (2) be the nylon 6 of low viscosity, nylon66 fiber, nylon 46, nylon 610, nylon 612, nylon 11, nylon 12, At least one of nylon 1010, nylon 1212, nylon 6T, nylon 9 T, nylon 10T.
4. a kind of preparation method of solid phase graphene nylon Heat Conduction Material according to claim 1, it is characterised in that: step Suddenly graphene slurries described in (3) be graphene slurries, biomass graphene slurries, Graphene derivative slurries in one Kind or several mixing, graphene film diameter >=5.0 μm, thickness≤3.0nm, oxygen-containing functional group content is 10-20% on graphene.
CN201810795269.1A 2018-07-11 2018-07-11 Preparation method of solid-phase polymerization graphene nylon heat conduction material Active CN109054365B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030176624A1 (en) * 2002-03-15 2003-09-18 Kazumi Tanaka Solid-phase drying and solid-phase polymerization of polyamide
CN101768353A (en) * 2009-01-06 2010-07-07 东丽纤维研究所(中国)有限公司 Method for increasing molecular weight of polyamide/graphite composite material through solid-phase polymerization
CN104203815A (en) * 2012-03-05 2014-12-10 旭化成化学株式会社 Surface-treated carbon nanotube and resin composition
CN105452334A (en) * 2013-06-12 2016-03-30 巴斯夫欧洲公司 Process for the continuous preparation of an aliphatic or partially aromatic polyamide
CN105722891A (en) * 2013-06-12 2016-06-29 巴斯夫欧洲公司 Method for producing aliphatic or partially aromatic polyamides, said method comprising a solid-phase polymerization process
CN107603208A (en) * 2017-08-29 2018-01-19 青岛万林橡塑科技有限公司 A kind of preparation method for core plate of lorry abrasion disc graphene/nylon activeness and quietness composite
CN107739504A (en) * 2017-10-19 2018-02-27 青岛万林橡塑科技有限公司 A kind of preparation method of graphene/nylon enhancing composite
CN107880264A (en) * 2017-12-06 2018-04-06 华南协同创新研究院 A kind of graphene modified polyamide heat conduction PUR and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030176624A1 (en) * 2002-03-15 2003-09-18 Kazumi Tanaka Solid-phase drying and solid-phase polymerization of polyamide
CN101768353A (en) * 2009-01-06 2010-07-07 东丽纤维研究所(中国)有限公司 Method for increasing molecular weight of polyamide/graphite composite material through solid-phase polymerization
CN104203815A (en) * 2012-03-05 2014-12-10 旭化成化学株式会社 Surface-treated carbon nanotube and resin composition
CN105452334A (en) * 2013-06-12 2016-03-30 巴斯夫欧洲公司 Process for the continuous preparation of an aliphatic or partially aromatic polyamide
CN105722891A (en) * 2013-06-12 2016-06-29 巴斯夫欧洲公司 Method for producing aliphatic or partially aromatic polyamides, said method comprising a solid-phase polymerization process
CN107603208A (en) * 2017-08-29 2018-01-19 青岛万林橡塑科技有限公司 A kind of preparation method for core plate of lorry abrasion disc graphene/nylon activeness and quietness composite
CN107739504A (en) * 2017-10-19 2018-02-27 青岛万林橡塑科技有限公司 A kind of preparation method of graphene/nylon enhancing composite
CN107880264A (en) * 2017-12-06 2018-04-06 华南协同创新研究院 A kind of graphene modified polyamide heat conduction PUR and preparation method thereof

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