Composite epoxy resin composition and preparation method thereof
A technology of epoxy resin and composition, applied in the field of polymer compounds, can solve the problems of limited application of epoxy resin, flame retardancy and temperature resistance of epoxy resin, etc., and achieves simple and fast preparation method, excellent flame retardancy, and good flame retardancy. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0030] The preparation of the modified titanium oxide powder includes fully stirring and mixing the titanium oxide powder with anhydrous ethanol and a modifier to carry out a modification reaction.
[0031] The flame retardant curing agent is a DOPO derivative. The flame retardant curing agent is DOPO derivative DOPO-DDS, and the structural formula of said DOPO-DDS is as follows:
[0032]
[0033] A common curing agent is 4,4'-diaminodiphenylmethane (DDM).
[0034] In the present invention, the mixture of titanium oxide powder, flame retardant curing agent and common curing agent is sequentially pre-cured and secondary-cured to obtain a composite epoxy resin composition.
[0035] Wherein, the temperature of pre-curing is 90℃~110℃, the time of pre-curing is 1h~2h; the temperature of secondary curing is 140℃~160℃, and the time of secondary curing is 2~4h.
[0036] The present invention also provides a preparation method of the composite epoxy resin composition, comprising t...
Embodiment 1
[0046] With the volume ratio of ethanol:water=1:9, 100 mL of ethanol was prepared, and 2 g of γ-aminopropyltriethoxysilane was added to the ethanol solution, and the solution was stirred until uniform. 20g of nano-titanium oxide was pre-dried at 120°C for 6h, and then added to the above solution. The solution system was mechanically stirred in nitrogen for 1-2h, followed by ultrasonication for 30min, and the reaction temperature was controlled at about 50°C. After the reaction, the system was cooled to room temperature, and washed with acetone solution by centrifugation for 3 to 5 times. Finally, the product was dried in an oven at 80°C for 12 hours to obtain the modified nano-titanium oxide powder.
[0047] In a 500mL three-necked round bottom flask equipped with magnetic stirring, dropping funnel and reflux device, add 0.1mol (19.826g) 4,4'-diaminodiphenylsulfone (DDS), 0.2mol (24.4g) p-hydroxybenzene formaldehyde and 200 mL of tetrahydrofuran (THF). The mixture was stirre...
Embodiment 2
[0050] With the volume ratio of ethanol:water=1:9, 100 mL of ethanol was prepared, and 2 g of γ-aminopropyltriethoxysilane was added to the ethanol solution, and the solution was stirred until uniform. 20g of nano-titanium oxide was pre-dried at 120°C for 6h, and then added to the above solution. The solution system was mechanically stirred in nitrogen for 1-2h, followed by ultrasonication for 30min, and the reaction temperature was controlled at about 50°C. After the reaction, the system was cooled to room temperature, and washed with acetone solution by centrifugation for 3 to 5 times. Finally, the product was dried in an oven at 80°C for 12 hours to obtain the modified nano-titanium oxide powder.
[0051] In a 500mL three-necked round bottom flask equipped with magnetic stirring, dropping funnel and reflux device, add 0.1mol (19.826g) 4,4'-diaminodiphenylsulfone (DDS), 0.2mol (24.4g) p-hydroxybenzene formaldehyde and 200 mL of tetrahydrofuran (THF). The mixture was stirre...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More