Title:
METHOD FOR PREPARING SILICONE RUBBER SPONGE THERMAL INSULATION MATERIAL BY ADOPTING IN-SITU GRAFT MODIFIED MESOPOROUS SILICA VESICLE CONTINUOUS AGGREGATE AS FUNCTIONAL FILLER
Document Type and Number:
WIPO Patent Application WO/2021/179298
Kind Code:
A1
Abstract:
Disclosed in the present invention are a method for preparing a premix by means of in-situ graft modification of a mesoporous silica vesicle continuous aggregate, and a method for preparing an addition-type silicone rubber sponge thermal insulation material by using the premix as a main raw material. (1) Under the action of an alkaline catalyst, a vinyl-terminated silicone oil, water and a vesicle are subjected to a chemical equilibrium reaction, and silicon hydroxyl generated in situ exists in three different forms: silicon hydroxyl grafted at the end of polysiloxane on the surface of the vesicle; silicon hydroxyl grafted at two ends of polysiloxane; and mixed terminated polysiloxane with one end of mixed terminated polysiloxane and one end of vinyl. The graft ratio of the vesicle surface, the content of silicon hydroxyl-terminated polysiloxane and the content of vinyl-terminated polysiloxane of the premix can be controlled by adjusting the proportion of the raw material and the like, achieving in-situ graft modification of the vesicle and synthesis of an active hydroxyl component. The process has few steps, no pollution, and low smell. (2) An addition-type silicone rubber sponge is prepared by using the premix as the main raw material. Liquid silicone rubber has a low viscosity and a high strength, and the thermal conductivity coefficient thereof decreases with the increase of the addition proportion of the vesicle.
Inventors:
KANG XU (CN)
Application Number:
PCT/CN2020/079262
Publication Date:
September 16, 2021
Filing Date:
March 13, 2020
Export Citation:
Assignee:
XIN HUASHENG ENERGY SAVING TECH CO LTD (CN)
International Classes:
C08L83/07; C08J9/02; C08K7/26; C08K9/04; C08L83/05
Domestic Patent References:
| WO2015089590A1 | 2015-06-25 |
Foreign References:
| CN105647189A | 2016-06-08 | |||
| US20120040138A1 | 2012-02-16 | |||
| CN110520480A | 2019-11-29 | |||
| CN109054392A | 2018-12-21 | |||
| CN107406616A | 2017-11-28 |
Attorney, Agent or Firm:
JIANGSU SUNDY LAW FIRM (CN)
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