Anti-ultraviolet and anti-aging epoxy resin composition and preparation method thereof
An epoxy resin and anti-ultraviolet technology, applied in the field of epoxy resin, can solve the problems of poor anti-ultraviolet performance and easy aging, and achieve the effect of excellent anti-ultraviolet and anti-aging performance and long storage stability period.
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[0058] The main function of the phenolic antioxidants and amine antioxidants in this example is to capture polymer peroxyl radicals, and they are the main antioxidants. The phosphite antioxidant has the effect of decomposing polymer peroxygen compounds, and it can play a better antioxidant effect when used in conjunction with the main antioxidant. The preparation method of above-mentioned anti-ultraviolet and anti-aging epoxy resin composition, comprises the steps:
[0059] (1) Mix the dicyclopentadiene type epoxy resin and hydantoin epoxy resin in component A according to a certain ratio, and then mechanically stir at a speed of 800-1000 rpm at 50°C-60°C for 5- 10 minutes, at the same time while stirring, add a certain amount of diluent, hindered amine light stabilizer and ultraviolet absorber in sequence, and then turn 800-1000 after the diluent, hindered amine light stabilizer and ultraviolet absorber are completely added Mechanically stir and disperse at a speed of 5-10 m...
Embodiment 1
[0066] Embodiment 1 prepares anti-ultraviolet and anti-aging epoxy resin composition 1
[0067] Weigh 5.0g of dicyclopentadiene type epoxy resin and 95.0g of hydantoin epoxy resin, mix dicyclopentadiene type epoxy resin and hydantoin epoxy resin at 50°C at a speed of 800 rpm Stir and disperse for 5 minutes, while stirring, add 5.0g 1,4-butanediol diglycidyl ether, 0.1g hindered amine light stabilizer bis(1,2,2,6,6-pentamethyl-4 -piperidinyl) sebacate and 0.9g of UV absorber UV40, the above-mentioned 1,4-butanediol diglycidyl ether, hindered amine light stabilizer bis(1,2,2,6,6-penta Methyl-4-piperidinyl) sebacate and UV absorber UV40 were added, then mechanically stirred at a speed of 800 / min to disperse for 5 minutes, and then left to stand at room temperature to obtain Component A;
[0068] Weigh 25.0g polyetheramine D230, 0.5g 2,4,6-tris(dimethylaminomethyl)phenol, 0.325g phenolic antioxidant 245, 0.075g amine antioxidant 1098 and 0.1g phosphite Antioxidant 126 was mechan...
Embodiment 2
[0070] Embodiment 2 prepares anti-ultraviolet and anti-aging epoxy resin composition 2
[0071] Weigh 15.0g of dicyclopentadiene type epoxy resin and 85.0g of hydantoin epoxy resin and mechanically stir and disperse at a speed of 900 rpm at 55°C for 8 minutes, while stirring, add 10.0g of 1,4-butanedi Alcohol diglycidyl ether, 0.5g hindered amine light stabilizer bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate and 0.5g ultraviolet absorber UV40, and then Mechanically stir and disperse at a speed of 900 / min for 8 minutes and then stand at room temperature for use to obtain component A;
[0072]Weigh 35.0g polyetheramine D230, 2.0g 2,4,6-tris(dimethylaminomethyl)phenol, 1.4g phenolic antioxidant 245, 0.2g amine antioxidant 1098 and 0.4g phosphite Antioxidant 126 was mechanically stirred and dispersed at room temperature at a speed of 700 rpm for 8 minutes to obtain component B;
[0073] Mix component A and component B at room temperature, mechanically stir and disperse at a ...
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