A kind of inorganic silicon fluorine sol epoxy compound hybrid coating and preparation method thereof
A technology of silica fluorine sol and silica sol, which is applied in the field of chemical coatings, can solve the problems of loss of advantages in physical properties, easy cracking of capillary film formation, poor high temperature resistance, etc., achieve excellent fireproof and heat insulation performance, convenient implementation, and increase flame retardancy The effect of thermal insulation performance
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Embodiment 1
[0044] (1) Mix 100g of tetraethyl orthosilicate, 90g of absolute ethanol, 18g of deionized water, and 0.5g of ammonia water, and then perform hydrolysis and polycondensation reaction at 25°C for 24 hours to obtain nano-hybrid silicon with a solid content of about 47%. Sol.
[0045] (2) Mix 50g methyltriethoxysilane, 50g dimethyldiethoxysilane, 100g dodecafluoroheptylpropyltrimethoxysilane (12FHPTMS), 180g absolute ethanol, 36g deionized water, 1g After the ammonia water is mixed evenly, the hydrolysis polycondensation reaction is carried out at 25°C for 24 hours to obtain a nano-hybrid silicon-fluorine sol with a solid content of about 48%.
[0046](3) 100 parts of inorganic silica sol synthesized in step (1) and step (2), 25 parts of inorganic silicon fluorine sol, 40 parts of E-44 epoxy resin, 20 parts of absolute ethanol, alkylphenol polyoxyethylene 2 parts of base ether emulsifier, 0.75 part of catalyst stannous octoate, 0.05 part of defoamer (BYK066), 0.6 part of levelin...
Embodiment 2
[0049] (1) Mix 100g of dimethyldiethoxysilane, 120g of absolute ethanol, 18g of deionized water, and 0.5g of ammonia water, and then conduct a hydrolysis and polycondensation reaction at 25°C for 24 hours to obtain a compound with a solid content of about 42%. Colorless and transparent nano-hybrid silica sol.
[0050] (2) 20g ethyl orthosilicate, 30g octyltriethoxysilane, 120g dodecafluoroheptylpropyltrimethoxysilane (12FHPTMS), 100g tetrahydrofuran, 100g absolute ethanol, 35g deionized water, 1g After the ammonia water is mixed evenly, the hydrolysis polycondensation reaction is carried out at 25° C. for 24 hours to obtain a nano-hybrid silicon-fluoride sol with a solid content of about 41%.
[0051] (3) 100 parts of inorganic silica sol synthesized in step (1) and step (2), 10 parts of inorganic silica fluorine sol, 35 parts of F-44 epoxy resin, 30 parts of dehydrated alcohol, dodecylbenzenesulfonate 3 parts sodium acid, 0.75 parts dibutyltin dilaurate catalyst, 0.05 parts ...
Embodiment 3
[0054] (1) Mix 60g of octyltriethoxysilane, 40g of methyltriethoxysilane, 100g of dioxane, 20g of deionized water, and 0.3g of HCl, and then perform hydrolysis and polycondensation reaction at 50°C for 12 hours to obtain Nano-hybrid silica sol with a solid content of about 45%.
[0055] (2) Mix 10g octyltriethoxysilane, 90g dimethyldimethoxysilane, 150g dodecafluoroheptylpropyltrimethoxysilane (12FHPTMS), 150g tetrahydrofuran, 50g absolute ethanol, 40g deionized Water and 0.5g HCl were evenly mixed, and then hydrolyzed and polycondensed at 40° C. for 12 hours to obtain a nano-hybrid silicon-fluoride sol with a solid content of about 51%.
[0056] (3) 100 parts of inorganic silica sol synthesized in step (1) and step (2), 30 parts of inorganic silicon fluorine sol, 45 parts of E-51 epoxy resin, 20 parts of tetrahydrofuran, sodium lauryl sulfate emulsifier 3 parts, 0.9 parts of dibutyltin dilaurate, 0.35 parts of defoamer (BYK066), 1.5 parts of leveling agent (EFKA3777), 1.5 pa...
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