A kind of superhydrophobic elastomer based on antibacterial nano silver/carbon nanotube microspheres/replica elastic surface and preparation method thereof
A technology of carbon nanotube microspheres and elastic surfaces, which is applied in the field of medical composite materials to achieve good antibacterial effect and mechanical properties, reduce loss, and have obvious effects
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Embodiment 1
[0027] This embodiment provides a super-hydrophobic antibacterial nano-silver / carbon nanotube microsphere / methyl vinyl siloxane copolymer elastomer composite material and a preparation method thereof. It includes the following steps:
[0028] (1) Weigh 1g of silver nitrate, 0.015g of polyvinyl alcohol, and 1L of deionized water to prepare a solution, put 5g of 0.1 μm carbon nanotube microspheres into it for adsorption, filter, heat and dry at 40°C for 20h and slowly put it into 1L Reduction was carried out in 1 mg / mL ascorbic acid aqueous solution, reacted at 50 °C for 3 h, filtered and washed, heated at 80 °C for 2 h, and dried at 600 °C for 20 h to obtain nano-silver-loaded carbon nanotube microspheres;
[0029] (2) Weigh 0.25 g of vinyl triperoxide tert-butyl silane and 5 g of ethanol to form a solution, mix with 5 g of nano-silver-supported carbon nanotube microspheres, and heat at 40° C. for 3 hours to obtain silanized silver nanoparticles-supported carbon nanotubes tube...
Embodiment 2
[0033] This embodiment provides a superhydrophobic antibacterial nano silver / carbon nanotube microsphere / butyl rubber composite material and a preparation method thereof. It includes the following steps:
[0034] (1) Weigh 2g of silver acetate, 0.04g of polyvinylpyrrolidone, and 0.5L of deionized water to prepare a solution, put 5g of 100 μm carbon nanotube microspheres into it for adsorption, filter, heat at 60°C for 10h and dry and slowly put it into 1L Reduction was carried out in 1 mg / mL aqueous glucose solution, reacted at 80 °C for 1 h, filtered and washed, heated at 90 °C for 1 h, dried, and heated at 800 °C for 5 h to obtain nano-silver-loaded carbon nanotube microspheres;
[0035] (2) Weigh 0.5 g of bis-[γ-(triethoxysilyl)propyl]tetrasulfide and 10 g of ethanol to prepare a solution, mix with 5 g of nano-silver-supported carbon nanotube microspheres, and heat at 40°C for 3 hours, The silanized nano silver particles supported carbon nanotube microspheres are obtained;...
Embodiment 3
[0039] This embodiment provides a super-hydrophobic antibacterial nano-silver / carbon nanotube microsphere / methyl vinyl siloxane copolymer elastomer composite material and a preparation method thereof. It includes the following steps:
[0040] (1) Weigh 10g of silver nitrate, 0.15g of polyvinyl alcohol, and 10L of deionized water to prepare a solution, put 50g of 0.1 μm carbon nanotube microspheres into it for adsorption, filter, heat at 40°C for 20h and dry, and slowly put it into 10L Reduction was carried out in 1 mg / mL ascorbic acid aqueous solution, reacted at 50 °C for 3 h, filtered and washed, heated at 80 °C for 2 h, and dried at 600 °C for 20 h to obtain nano-silver-loaded carbon nanotube microspheres;
[0041] (2) Weigh 2.5 g of vinyl triperoxide tert-butylsilane and 50 g of ethanol to form a solution, mix with 50 g of nano-silver-supported carbon nanotube microspheres, and heat at 40°C for 3 hours to obtain silanized silver nanoparticles-supported carbon nanotubes tu...
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