High-thermal-conductivity polymer material composite film with thermal response performance and preparation method of high-thermal-conductivity polymer material composite film

A technology of polymer materials and composite membranes, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc. The effect of large tonality, improved application range and low material cost

Active Publication Date: 2021-06-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current shape memory materials generally have problems such as high raw material cost, complex manufacturing process, and large difference in shape memory performance, and generally only one responds to shape memory characteristics, and the application scenarios are greatly restricted.

Method used

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  • High-thermal-conductivity polymer material composite film with thermal response performance and preparation method of high-thermal-conductivity polymer material composite film
  • High-thermal-conductivity polymer material composite film with thermal response performance and preparation method of high-thermal-conductivity polymer material composite film
  • High-thermal-conductivity polymer material composite film with thermal response performance and preparation method of high-thermal-conductivity polymer material composite film

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preparation example Construction

[0029] The preparation method of the high thermal conductivity polymer material composite film with thermal response performance is characterized in that it comprises the following steps:

[0030] (1) Add boron nitride, graphene, nanocellulose and polyethylene glycol into the dispersant respectively, stir for 0.5-1 hour, and sonicate for 5-10 minutes to prepare a boron nitride dispersion with a concentration of 1-5 mg / mL, Graphene dispersion, nanocellulose dispersion and polyethylene glycol dispersion;

[0031] (2) Mix the boron nitride dispersion, graphene dispersion, nanocellulose dispersion and polyethylene glycol dispersion obtained in step (1) according to the set weight ratio, stir for 0.5-1h, and ultrasonically for 5-10min , to obtain boron nitride-nanocellulose-polyethylene glycol mixed solution, graphene-nanocellulose-polyethylene glycol mixed solution and graphene / boron nitride-nanocellulose- Polyethylene glycol mixture;

[0032] (3) Mixing the nanocellulose disper...

specific Embodiment 1

[0037] The high thermal conductivity polymer material composite film with thermal response performance provided in this embodiment is a multi-layer high thermal conductivity polymer material composite film with heat-driven shape memory performance, which is composed of graphene, boron nitride, polyethylene Composed of alcohol and nanocellulose, the mass percent of graphene in the composite film is 19%, the mass percent of boron nitride is 1%, the mass percent of nanocellulose is 40%, and the mass percent of polyethylene glycol is 40%. The average horizontal size of the graphene is 10-20 microns, and the average thickness is 5-10 layers; the average size of the boron nitride is 3-5 microns. The diameter of the nanocellulose is 5-100nm, the aspect ratio is 100-1000; the molecular weight of polyethylene glycol is 10000.

[0038] The preparation method of the heat-driven shape memory multi-layer high thermal conductivity polymer material composite film provided in this embodiment ...

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Abstract

The invention discloses a high-thermal-conductivity polymer material composite film with thermal response performance. The high-thermal-conductivity polymer material composite film is a composite film with a multilayer structure and is prepared from the following components in percentage by weight: 0-20% of graphene, 0-20% of boron nitride, 30-40% of nano cellulose and 30-40% of polyethylene glycol. The preparation method comprises the following steps: respectively adding all the components into a dispersing agent to prepare dispersion liquid; stirring and performing ultrasonic treatment to obtain a mixed solution; and degassing the mixed solution, pouring the degassed mixed solution into a mold, and further drying to respectively prepare a plurality of single-layer films such as a nano cellulose-polyethylene glycol composite film and the like. According to the preparation method, the filler amount is optimally designed, the positions of different layers are macroscopically adjusted, and all single-layer films are stacked together according to a set sequence and then are subjected to hot pressing, so that the composite film with a multi-layer structure in which the heat conduction layers and the matrix layers are alternately arranged is obtained, and the composite film has good flexibility, high in-plane thermal conductivity and thermal driving shape memory performance.

Description

technical field [0001] The invention relates to a functional polymer composite material, which belongs to the field of heat-conducting polymer composite materials and shape-memory polymer composite materials, in particular to a heat-driven shape-memory multilayer high-thermal-conductivity polymer material composite film and a preparation method thereof. Background technique [0002] Shape memory material (SMM) is a kind of stimuli-responsive material, which has attracted extensive attention because of its unique shape memory properties. It can sense changes in the external environment (such as temperature, electricity, light, magnetism, pH, etc.), and respond to these changes, returning from its temporary shape to its original shape. Compared with SMM (such as shape memory alloy, shape memory ceramics, etc.), shape memory polymer (shapememorypolymer, SMP) has the advantages of large shape recovery rate, low response temperature, low cost, excellent processing and forming per...

Claims

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Application Information

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IPC IPC(8): B32B9/00B32B9/04B32B27/28B32B37/06B32B37/10C08L1/02C08L71/02C08K3/04C08K3/38C08J5/18
CPCB32B9/00B32B9/007B32B9/04B32B9/045B32B27/28B32B37/06B32B37/10C08J5/18C08J2301/02C08J2371/02C08K3/042C08K2003/385B32B2307/302B32B2307/558B32B2605/18
Inventor 丁鹏彭方宋娜
Owner SHANGHAI UNIV
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