Method for producing hybrid material on the basis of Si/Ti composite sol modified epoxy resin
A technology of epoxy resin preparation and composite sol, applied in epoxy resin coatings, anti-corrosion coatings, coatings and other directions, can solve the problems of epoxy resin brittleness and weather resistance, and achieve high strength and improved aging resistance. , the effect of high hardness
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Embodiment 1
[0023] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 3:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.
[0024] Take by weighing 15.5g of epoxy r...
Embodiment 2
[0026] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 3:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.
[0027] Take by weighing 7.5g of epoxy re...
Embodiment 3
[0029] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 2:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.
[0030] Weigh 5.5g of epoxy resin, 5g of ...
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