Title:
EXPANDED GRAPHITE THERMAL INTERFACE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/233028
Kind Code:
A1
Abstract:
An expanded graphite thermal interface material and a preparation method therefor. The preparation method comprises the following steps: 1) preparing expanded graphite by using a graphite film as a raw material by means of an oxidation intercalation method; 2) performing surface treatment on the expanded graphite by using a silane coupling agent to obtain modified expanded graphite; and 3) fully infiltrating the modified expanded graphite with polyolefin in a vacuum infiltrating manner to obtain the expanded graphite thermal interface material. Firstly, the expanded graphite is prepared by expanding a graphite film, and the internal network connectivity thereof is good, which is conducive to heat conduction; moreover, in the process of preparing a composite material, due to the overall infiltration of the polyolefin, there is no problem of poor dispersion performance. Secondly, the expansion multiple of the expanded graphite in the preparation process is adjustable, and thus experiments can be conducted conveniently. Thirdly, by modifying the bulk expanded graphite as a whole, the polyolefin is distributed more evenly on the surface of the expanded graphite, and the infiltration amount of the polyolefin can be controlled.
Inventors:
ZENG XIAOLIANG (CN)
ZHANG YUEXING (CN)
ZHANG CHENXU (CN)
YE ZHENQIANG (CN)
LI JUNWEI (CN)
REN LINLIN (CN)
SUN RONG (CN)
XU JIANBIN (CN)
ZHANG YUEXING (CN)
ZHANG CHENXU (CN)
YE ZHENQIANG (CN)
LI JUNWEI (CN)
REN LINLIN (CN)
SUN RONG (CN)
XU JIANBIN (CN)
Application Number:
PCT/CN2021/092121
Publication Date:
November 10, 2022
Filing Date:
May 07, 2021
Export Citation:
Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
C08L23/00; C08K7/24; C08K9/06; C09K5/14
Foreign References:
| CN108329893A | 2018-07-27 | |||
| CN112679798A | 2021-04-20 | |||
| CN107867685A | 2018-04-03 | |||
| US20010041253A1 | 2001-11-15 | |||
| US20020114952A1 | 2002-08-22 | |||
| KR20130088251A | 2013-08-08 | |||
| KR20140072657A | 2014-06-13 |
Attorney, Agent or Firm:
BEIJING CHENGHUI LAW FIRM (CN)
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