Method for preparing high-strength modified polyurethane composite material and product
A composite material and polyurethane technology, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, non-polymer adhesive additives, etc., can solve the problem of weak chemical corrosion resistance, no antistatic ability, sticky Insufficient knot strength and other problems, to achieve the effect of stable product properties, simple reaction, and fast reaction rate
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Embodiment 1
[0019] Weigh 2.0 g of original carbon nanotubes, add them into a mixed solution of 150 mL of concentrated sulfuric acid and 50 mL of concentrated nitric acid, reflux at 100 °C for 6 h, dilute with distilled water and suction filter until the filtrate is neutral. Dry in a hollow drying oven at 90°C for 6 h, and grind to obtain carbon dioxide nanotube powder for future use. Add 0.5 mol diethanolamine into a 250 mL three-necked flask, and slowly drop 0.5 mol acrylonitrile to react. When acrylonitrile was added dropwise, the temperature was maintained at 20°C, a condensing reflux device was installed, and the temperature was raised to 70°C for 1.5 h to obtain the chain extender N-(2-cyanoethyl)diethanolamine for later use. Add 10 mL of polyhydroxyphthalic anhydride polyester polyol into a three-neck flask, heat to 120°C for vacuum dehydration for 1 h, then add 3.0 g of 1,3,5,7,9,11,13-benzene after cooling down to 60°C Base-15-diethanolaminepropyl clathrate oligomeric silsesquiox...
Embodiment 2
[0021]Weigh 2.0 g of original carbon nanotubes, add them into a mixed solution of 150 mL of concentrated sulfuric acid and 50 mL of concentrated nitric acid, reflux at 100 °C for 6 h, dilute with distilled water and suction filter until the filtrate is neutral. Dry in a hollow drying oven at 90°C for 6 h, and grind to obtain carbon dioxide nanotube powder for future use. Add 0.5 mol diethanolamine into a 250 mL three-necked flask, and slowly drop 0.5 mol acrylonitrile to react. When acrylonitrile was added dropwise, the temperature was maintained at 20°C, a condensing reflux device was installed, and the temperature was raised to 70°C for 1.5 h to obtain the chain extender N-(2-cyanoethyl)diethanolamine for later use. Add 10 mL of polyhydroxyphthalic anhydride polyester polyol into a three-necked flask, heat to 120°C for vacuum dehydration for 1 h, then add 2.0 g of 1,3,5,7,9,11,13-benzene after cooling down to 60°C Base-15-diethanolaminepropyl clathrate oligomeric silsesquio...
Embodiment 3
[0023] Weigh 2.0 g of original carbon nanotubes, add them into a mixed solution of 150 mL of concentrated sulfuric acid and 50 mL of concentrated nitric acid, reflux at 100 °C for 6 h, dilute with distilled water and suction filter until the filtrate is neutral. Dry in a hollow drying oven at 90°C for 6 h, and grind to obtain carbon dioxide nanotube powder for future use. Add 0.5 mol diethanolamine into a 250 mL three-necked flask, and slowly drop 0.5 mol acrylonitrile to react. When acrylonitrile was added dropwise, the temperature was maintained at 20°C, a condensing reflux device was installed, and the temperature was raised to 70°C for 1.5 h to obtain the chain extender N-(2-cyanoethyl)diethanolamine for later use. Add 10 mL of polyhydroxyphthalic anhydride polyester polyol into a three-necked flask, heat to 120°C for vacuum dehydration for 1 h, then add 4.0 g of 1,3,5,7,9,11,13-benzene after cooling down to 60°C Base-15-diethanolaminepropyl clathrate oligomeric silsesqui...
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