Title:
GRAPHENE-COMPOSITED POLYIMIDE FILM AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/095259
Kind Code:
A1
Abstract:
Disclosed are a graphene-composited polyimide film consisting of the following components in parts by weight: 150 to 300 parts of a polyimide resin polymer, 1 to 2 parts of fullerene, 0.1 to 0.2 part of a rare earth oxide, and 2.5 to 3.5 parts of a modifier, wherein the polyimide resin polymer comprises the follow components in percentage by weight: 0.2%-1.5% of graphene, 1%-5% of titanium dioxide, 0.5%-6% of silica sol, 2%-10% of a fluorine-containing acrylate copolymer, 1%-2% of a composite filler made of a nano magnesium oxide whisker and nano silicon oxide at a mass ratio of 1 : (0-2), and the balance being a polyimide resin, wherein the fluorine-containing acrylate copolymer is a hyperbranched polymer with a molecular weight of 3000-10000; and the modifier is formulated from methyl salicylate and liquid paraffin at a weight ratio of (3-5) : 1. The graphene-composited polyimide film has excellent mechanical properties, an elongation at break of greater than 40%, a film thickness of only 8-12 μm, a tensile strength at normal temperature of greater than 200 MPa, an elastic modulus of greater than 2.88 GPa without wrinkling, a high degree of flatness, and a volume resistivity of 4.5 × 101-3.7 × 106 Ωcm.
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Inventors:
XU WEIWEI (CN)
WANG YONG (CN)
QI XIAODONG (CN)
JIANG XIN (CN)
CHEN CHEN (CN)
WANG YONG (CN)
QI XIAODONG (CN)
JIANG XIN (CN)
CHEN CHEN (CN)
Application Number:
PCT/CN2017/111570
Publication Date:
May 23, 2019
Filing Date:
November 17, 2017
Export Citation:
Assignee:
JIANGSU YABAO INSULATION MAT INC (CN)
International Classes:
C08L79/08; C08J5/18; C08K3/04; C08K3/22; C08K3/36; C08K7/08; C08K13/02; C08K13/04; C08L33/14; C08L91/06
Foreign References:
| CN107828210A | 2018-03-23 | |||
| CN105694708A | 2016-06-22 | |||
| CN105566906A | 2016-05-11 | |||
| CN105778498A | 2016-07-20 | |||
| CN104774461A | 2015-07-15 | |||
| CN105694036A | 2016-06-22 |
Other References:
MA, CUI ET AL.: "The Making of High Conductivity Graphene-Carbon Nano-tube/Polyimide Films with In Situ Polymerization Method", JOURNAL OF NINGXIA UNIVERSITY ( NATURAL SCIENCE EDITION), vol. 35, no. 3, 30 September 2014 (2014-09-30), pages 235 - 239
FU, HONGMEI ET AL.: "Progress in Modification of Polyimide by Nanoscale Materials", CHINA PLASTICS, vol. 29, no. 2, 28 February 2015 (2015-02-28), pages 1 - 7
FU, HONGMEI ET AL.: "Progress in Modification of Polyimide by Nanoscale Materials", CHINA PLASTICS, vol. 29, no. 2, 28 February 2015 (2015-02-28), pages 1 - 7
Attorney, Agent or Firm:
BEIJING WENYUAN PATENT AGENCY CO., LTD. (CN)
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