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Oxidized graphene modified foam material and preparation method thereof

A graphene modification and foaming material technology, applied in the field of foaming materials, can solve problems such as lack of conductive foamed conductive material preparation methods, and achieve the effects of retaining biodegradable properties, controllable density, and simple and easy process

Active Publication Date: 2014-10-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there is a lack of a conductive foamed conductive material and a preparation method thereof

Method used

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  • Oxidized graphene modified foam material and preparation method thereof
  • Oxidized graphene modified foam material and preparation method thereof
  • Oxidized graphene modified foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] A graphene oxide modified foam material of the present invention is composed of the following components by weight: 70 parts of polylactic acid (the mass ratio of model 4032D and model 2002D is: 1:1), 1 part of graphene oxide, 30 parts of polycaprolactone, 2 parts of compound foaming agent, 1 part of surfactant, 4 parts of organic nano-nucleating agent, 1 part of foaming aid;

[0032] The dielectric constant of the graphene oxide modified foam material is 2F / m-9F / m, the electrical conductivity is 0.10S / m-0.80S / m, and the apparent density is 0.10g / cm 3 ~0.90g / cm 3 , compressive strength is 5~30MPa, impact strength is 10~85KJ / m 2 , The average cell diameter is 100 ~ 300um.

[0033] The polylactic acid is a matrix resin, graphene oxide is a conductive material, and flexible and biodegradable polycaprolactone is a toughening agent; the purity of the graphene oxide is not less than 99%, and the particle size of less than or equal to 30um is ≥95 The graphite powder adopts ...

Embodiment 2

[0050] The difference between embodiment 2 and embodiment 1 is: a kind of graphene oxide modified foam material of the present invention is made up of the component that comprises following parts by weight: 75 parts of polylactic acid (the mass ratio of model 4032D and model 2002D is: 1:1), 1 part of graphene oxide, 25 parts of polycaprolactone, 5 parts of compound foaming agent, 3 parts of surfactant, 4 parts of organic nano-nucleating agent, and 1 part of foaming aid.

[0051] The preparation method of the graphene oxide modified foaming material of the present invention, in step (3), 39g of the foaming masterbatch is placed in the mould, and the flat vulcanizer is heated to 158 ℃ foam molding, foaming The time is 50 minutes. Obtain an apparent density of 0.34g / cm 3 Graphene oxide modified foam material.

Embodiment 3

[0053] The difference between embodiment 3 and embodiment 1 is: a kind of graphene oxide modified foaming material of the present invention, is made up of the component that comprises following parts by weight: 80 parts of polylactic acid (the mass ratio of model 4032D and model 2002D is: 1:1), 3 parts of graphene oxide, 20 parts of polycaprolactone, 5 parts of compound foaming agent, 3 parts of surfactant, 4 parts of organic nano-nucleating agent, and 1 part of foaming aid.

[0054] The preparation method of the graphene oxide modified foaming material of the present invention, in step (3), 39g of the foaming masterbatch is placed in the mould, and the flat vulcanizer is heated to 158 ℃ foam molding, foaming The time is 50 minutes. Obtain an apparent density of 0.36g / cm 3 Graphene oxide modified foam material.

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Abstract

The invention discloses an oxidized graphene modified foam material which comprises the following constituents by weight parts: 70 to 100 parts of polylactic acid, 5 to 30 parts of polycaprolactone, 1 to 10 parts of oxidized graphene, 2 to 20 parts of a compound foaming agent, 1 to 7 parts of a surfactant, 4 to 6 parts of an organic nano-nucleating agent, and 1 to 2 parts of a blowing promotor. The oxidized graphene modified foam material is 2 to 9 F / m in dielectric constant, 0.10 to 0.80 S / m in electric conductivity, 0.10 to 0.90 g / cm<3> in performance density, 5 to 30 MPa in compression strength, 10 to 85 KJ / m<2> in impact strength, and 100 to 300 [Mu]m in average cell diameter. The oxidized graphene modified foam material is simple and feasible in technology, and can be used for economically and effectively preparing polylactic acid-based complex foaming conductive material which is excellent in conductibility and comprehensive mechanical property, high in heat resistance and controllable in density.

Description

technical field [0001] The invention belongs to the field of foam materials, and in particular relates to a graphene oxide modified foam material and a preparation method thereof. Background technique [0002] Traditional petroleum-based plastics will not only consume a large amount of petroleum resources and exacerbate the trend of shortage of petroleum resources in my country; but also their finished products are not easy to degrade at the end of their life, causing a series of environmental problems such as soil compaction and "white pollution". In order to alleviate the above problems, the research and development of bio-based materials and their composite materials has become a hot issue in today's academic circles. [0003] Polylactic acid (PLA) is a bio-based plastic polymerized with lactic acid as a monomer. Its synthetic raw materials come from a wide range of sources, mainly agricultural and sideline products such as corn stalks and beet stalks. The finished produc...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K9/06C08K3/34C08K9/02C08K3/04C08J9/10
Inventor 姚正军孔颖周金堂
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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