Title:
LIQUID CASTING RESIN COMPOSITION FOR ULTRA-HIGH VOLTAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/113507
Kind Code:
A1
Abstract:
The present invention relates to a liquid casting resin composition for an ultra-high voltage device, which composition comprises a resin and a filler, wherein the filler is a spherical silicon micropowder; the filler accounts for 71%-80% of the mass percentage of the liquid casting resin composition; the specific surface area of the spherical silicon micropowder is between 0.4-2.5 m2/g; the spherical silicon micropowder comprises an activated spherical silica powder, the surface of which has been treated by a silane coupling agent; the mass percentage of the activated spherical silica powder in the spherical silicon micropowder is not less than 79%; and the silane coupling agent is a polar silane coupling agent. According to the liquid casting resin composition of the present invention, an appropriate filler proportion can be set according to different thermal expansion coefficients of inserts in a device to be cast, to obtain a resin composition with a specific expansion coefficient, so that an electrical device obtained by casting, such as a solid-sealed polar pole, has an excellent cracking resistance.
Inventors:
QIU JIAHAO (CN)
AO ZHOU (CN)
ZHENG YUECANG (CN)
AO ZHOU (CN)
ZHENG YUECANG (CN)
Application Number:
PCT/CN2018/119501
Publication Date:
June 11, 2020
Filing Date:
December 06, 2018
Export Citation:
Assignee:
ZHEJIANG HUAFEI ELECTRONIC MAT CO LTD (CN)
International Classes:
C08L63/00; B29C39/00; C08K9/06; C08K13/06; H01B3/40
Foreign References:
| CN101029165A | 2007-09-05 | |||
| CN101074312A | 2007-11-21 | |||
| CN101724223A | 2010-06-09 | |||
| JPH0525367A | 1993-02-02 |
Attorney, Agent or Firm:
SHANGHAI ZHI XIN PATENT AGENT LTD. (CN)
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