Title:
SILICA FILLER AND PREPARATION METHOD THEREFOR, AND EPOXY RESIN COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/120900
Kind Code:
A1
Abstract:
Disclosed is a silica filler. The silica filler is composed of silica particles having two or more different organic functional groups grafted on the surface thereof by means of surface modification with two or more different silane coupling agents. The preparation method for the silica filler comprises the following steps: stirring and dispersing silica particles in a silane coupling agent solvent to obtain a mixed reaction solution, wherein the silane coupling agent solvent contains two or more different silane coupling agents; and subjecting the reaction solution to a high-temperature reflux reaction process, cooling the reaction solution, followed by treatment by sequential centrifugal washing and drying processes to obtain the silica particles with two or more different organic functional groups grafted on the surface thereof. The surface of the silica filler is grafted with two or more different organic groups, and is filled in an epoxy resin composite material; and the filler enables the composite material to have a low viscosity and excellent viscosity stability when the filler has a small particle size and a higher filling amount.
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Inventors:
LI GANG (CN)
ZAHNG CHAO (CN)
WU HOUYA (CN)
ZHU PENGLI (CN)
ZAHNG CHAO (CN)
WU HOUYA (CN)
ZHU PENGLI (CN)
Application Number:
PCT/CN2020/136552
Publication Date:
June 16, 2022
Filing Date:
December 15, 2020
Export Citation:
Assignee:
SHENZHEN INST ADV TECH (CN)
International Classes:
C08L63/00; C09J163/00; C09J11/04
Domestic Patent References:
| WO2013071212A1 | 2013-05-16 |
Foreign References:
| JPH0925395A | 1997-01-28 | |||
| CN110016242A | 2019-07-16 | |||
| CN103570026A | 2014-02-12 | |||
| CN106589485A | 2017-04-26 | |||
| CN102993782A | 2013-03-27 |
Attorney, Agent or Firm:
MING & YUE INTELLECTUAL PROPERTY LAW FIRM (CN)
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