A kind of self-cleaning TPU foam composite material and preparation method thereof
A composite material and self-cleaning technology, which is applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., to achieve the effects of improving self-cleaning ability, simple and practical process, and improving mechanical properties
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Embodiment 1
[0035] A method for preparing self-cleaning TPU foam composite material, the specific steps are:
[0036] 1) Add 1mL of titanium isopropoxide to 5mL of absolute ethanol, and then slowly drop in 5mL of an aqueous solution containing 4mg of ammonium chloride under stirring conditions to obtain part A; add 50mg of GO to 50mL of deionized water and sonicate for 30min, Then 1000 r / min high-speed stirring for 1 h, then add 100 mg of glucose and 1 mL of ammonium hydroxide to obtain Part B; mix Part A and Part B into an autoclave, and heat at 160 ° C for 12 h; after the reduction reaction is completed, the product is used Washed several times with pure water and ethanol, and dried at 90 °C for 12 h to obtain rGO-TiO 2 ; Weigh 2.5g PVDF powder, 22.5g DMF and 0.025g rGO-TiO 2 In a single-necked bottle, condense and reflux in a water bath at 65°C for 3 hours to make 1% rGO-TiO2 Photocatalytic self-cleaning coating agent;
[0037] 2) After drying 150 parts by weight of TPU, 1.5 parts by...
Embodiment 2
[0040] A method for preparing self-cleaning TPU foam composite material, the specific steps are:
[0041] 1) Add 1mL of titanium isopropoxide to 5mL of absolute ethanol, and then slowly drop in 5mL of an aqueous solution containing 4mg of ammonium chloride under stirring conditions to obtain part A; add 50mg of GO to 50mL of deionized water and sonicate for 30min, Then stir at a high speed of 1000r / min for 1h, then add 100mg of glucose and 1mL of ammonium hydroxide to obtain Part B; mix Part A and Part B into an autoclave, and heat at 160°C for 12h; Washed several times with pure water and ethanol, and dried at 90 °C for 12 h to obtain rGO-TiO 2 ; Weigh 2.5g PVDF powder, 22.5g DMF and 0.075g rGO-TiO 2 In a single-necked bottle, condense and reflux in a water bath at 65°C for 3 hours to make 3% rGO-TiO 2 Photocatalytic self-cleaning coating agent;
[0042] 2) After drying 150 parts by weight of TPU, 1.5 parts by weight of sodium bicarbonate, and 1.5 parts by weight of 4,4'-o...
Embodiment 3
[0045] A method for preparing self-cleaning TPU foam composite material, the specific steps are:
[0046] 1) Add 1mL of titanium isopropoxide to 5mL of absolute ethanol, and then slowly drop in 5mL of an aqueous solution containing 4mg of ammonium chloride under stirring conditions to obtain part A; add 50mg of GO to 50mL of deionized water and sonicate for 30min, Then 1000 r / min high-speed stirring for 1 h, then add 100 mg of glucose and 1 mL of ammonium hydroxide to obtain part B; mix part A and part B into an autoclave, and heat at 160 ° C for 12 h; after the reduction reaction is completed, the product is used Washed several times with pure water and ethanol, and dried at 90 °C for 12 h to obtain rGO-TiO 2 ; Weigh 2.5g PVDF powder, 22.5g DMF and 0.1g rGO-TiO 2 In a one-necked bottle, condense and reflux in a water bath at 65°C for 3 hours to make 4% rGO-TiO 2 Photocatalytic self-cleaning coating agent;
[0047] 2) After drying 150 parts by weight of TPU, 1.5 parts by we...
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