Preparation method of epoxy-POSS/silicone modified epoxy resin composite

A technology of epoxy resin and composite material, applied in the field of polymer materials, to achieve the effect of excellent weather resistance and mechanical properties, excellent comprehensive performance, and green environmental protection synthesis process

Inactive Publication Date: 2019-07-09
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is, for existing many problems existing after curing of epoxy resin, in order to solve these problems, the present invention proposes a kind of preparation method of epoxy-based POSS / organosilicon modified epoxy resin composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh 35 grams of γ-(2,3-glycidyloxypropoxy)propyltrimethoxysilane and pour it into a three-necked flask with stirring and condensing equipment, set the temperature of the water bath to 55°C, and adjust the temperature of the system with concentrated hydrochloric acid. The pH value was 3, and 50.7 g of deionized water was slowly dropped into the three-necked flask under stirring, and the dropwise addition was completed within 1.5 hours. After reacting for 3.5 hours, a light yellow solid powder was obtained, the reaction was stopped, the light yellow solid powder was filtered out using a separatory funnel, the light yellow solid powder was washed three times with deionized water, and finally the treated light yellow powder was put into a vacuum oven. Dry at 80°C for 24 hours, and the obtained white solid powder is epoxy cage silsesquioxane (epoxy POSS).

[0019] Take 30 grams of methyltrimethoxysilane and 13.5 grams of diphenyldimethoxysilane and slowly drop t...

Embodiment 2

[0022] Accurately weigh 30 grams of 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and pour it into a three-necked flask with stirring and condensing equipment, set the temperature of the water bath to 55°C, and adjust the temperature of the system with concentrated hydrochloric acid. The pH value was 3, and 49.5 grams of deionized water was slowly dropped into the three-necked flask under stirring, and the dropwise addition was completed within 1.5 hours. After reacting for 3.5 hours, a light yellow solid was obtained, stop the reaction, filter out the light yellow solid powder with a separatory funnel, wash the light yellow solid three times with deionized water, and finally put the treated light yellow powder in a vacuum oven at 80°C After drying for 24 hours, the obtained pale yellow solid powder is epoxy cage silsesquioxane (epoxy POSS).

[0023] Take 35.0 grams of methyltrimethoxysilane and 13.5 grams of dimethyldimethoxysilane and slowly drop them into a three-necked flas...

Embodiment 3

[0026] Accurately weigh 40 grams of γ-(2,3-glycidoxy)propyltrimethoxysilane and pour it into a three-necked flask with stirring and condensation equipment, set the temperature of the water bath to 55°C, and adjust the temperature of the system with concentrated hydrochloric acid. The pH value was 3, and 53.5 grams of deionized water was slowly dropped into the three-neck flask under stirring, and the dropwise addition was completed within 1.5 hours. After reacting for 3.5 hours, a light yellow solid powder was obtained, the reaction was stopped, the light yellow solid powder was filtered out using a separatory funnel, the light yellow solid powder was washed three times with deionized water, and finally the treated light yellow powder was put into a vacuum oven. After drying at 80°C for 24 hours, the obtained pale yellow solid powder is epoxy cage silsesquioxane (epoxy POSS).

[0027] Take 30 grams of phenyltrimethoxysilane and 13.5 grams of dimethyldimethoxysilane and slowly ...

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Abstract

A preparation method of an epoxy-POSS/silicone modified epoxy resin composite comprises the following steps: synthesizing epoxy-polyhedral oligomeric silsesquioxane (epoxy-POSS for short); preparing asilicone modified epoxy resin prepolymer; and compounding the epoxy-POSS with the silicone modified epoxy resin prepolymer to generate the target product epoxy-POSS/silicone modified epoxy resin composite. The epoxy-POSS/silicone modified epoxy resin composite provided in the present invention is composed of the silicone modified epoxy resin, the epoxy-POSS, an active diluent and a latent curingagent with substantial improvements in mechanical properties and high temperature resistance in comparison to a previous cured polysiloxane product; the preparation method of the epoxy-POSS/silicone modified epoxy resin composite has the advantages that the preparation of the composite meets the requirements of going green and environmental protection with no three wastes discharged, and the composite is synthesized through a simple and controllable process and has excellent weather resistance and mechanical properties. The epoxy-POSS/silicone modified epoxy resin composite prepared by the preparation method disclosed by the invention can be widely used for high temperature resistant insulation protection of electrical, electronic and photoelectric materials.

Description

technical field [0001] The invention relates to a preparation method of an epoxy-based POSS / organosilicon modified epoxy resin composite material, belonging to the technical field of polymer materials. Background technique [0002] Polyhedral oligomeric silsesquioxanes are a class of polyhedral oligomeric silsesquioxanes containing (RSiO 1.5 ) n Structured substances have been a research hotspot in recent years. The R substituents in the molecular structure are hydrogen, alkyl, alkenyl, aryl, arylene and their derivative groups. According to different structures, silsesquioxane can be divided into random structure, ladder structure, cage structure and semi-cage structure. Its molecular structure is easy to design. By introducing reactive functional groups, it can be integrated into the polymer molecular chain to form an organic / inorganic hybrid at the molecular level. [0003] POSS / polymer composite material is a newly developed nanocomposite material. It uses the oxide c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/10C08L83/04C08G77/18C08G77/42
CPCC08G77/045C08G77/42C08L83/10C08L2201/08C08L2205/02C08L83/04
Inventor 董晓娜游胜勇谢欣张军
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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