High-strength and high-toughness composite material and preparation method and application thereof
A composite material, high toughness technology, applied in the field of material processing, can solve the problems of uneven dispersion between composite materials, long penetration time of crosslinking agent, difficult to control the concentration of crosslinking agent, etc., to achieve simple steps and broad application prospects. Effect
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Embodiment 1
[0030] 1) Weigh 1 g of dopamine and dissolve it in 100 mL of DMF, add BiBB and TEA in an equimolar amount to BiBB, the molar ratio of BiBB to dopamine is 1:2, blow nitrogen for 20 minutes to remove oxygen, and stir for 10 hours in an ice bath.
[0031] 2) Weigh 2 g of GO, add 100 mL of water, ultrasonically disperse for 20 min, add it into the reaction system, and stir at room temperature for 12 h. After the reaction was completed, the product was centrifuged and washed with water, and then freeze-dried to obtain the macromolecular initiator GO-Br.
[0032] 3) Disperse 1g of initiator GO-Br in 40mL DMF and sonicate for 10min, add 0.33g of styrene and 1.67g of tert-butyl acrylate, 0.04g of PMDETA, 0.02g of CuBr, remove the water and oxygen in the system, react at 90°C for 20h, and react After the end, 1.67g of trifluoroacetic acid solvent was added for hydrolysis. After the reaction, it was filtered, washed repeatedly with solvent and ethanol, and dried in vacuum for 24 hours t...
Embodiment 2
[0036]1) Weigh 1 g of dopamine and dissolve it in 100 mL of DMF, add BiBB and TEA in an equimolar amount to BiBB, the molar ratio of BiBB to dopamine is 1:2, blow nitrogen for 20 minutes to remove oxygen, and stir for 10 hours in an ice bath.
[0037] 2) Weigh 1gGO, add 100mL water, ultrasonically disperse for 20min, add it into the reaction system, and stir at room temperature for 12h. After the reaction was completed, the product was centrifuged and washed with water, and then freeze-dried to obtain the macromolecular initiator GO-Br.
[0038] 3) Disperse 1g of initiator GO-Br in 40mL DMF and sonicate for 10min, add 1.5g of styrene and 1.5g of tert-butyl acrylate, 0.15g of PMDETA, 0.075g of CuBr, remove the water and oxygen in the system, react at 90°C for 20h, and react After the end, 1.5 g of trifluoroacetic acid solvent was added for hydrolysis. After the reaction, it was filtered, washed repeatedly with solvent and ethanol, and dried in vacuum for 24 hours to obtain poly...
Embodiment 3
[0042] 1) Weigh 1 g of dopamine and dissolve it in 100 mL of DMF, add BiBB and TEA in an equimolar amount to BiBB, the molar ratio of BiBB to dopamine is 1:1, blow nitrogen for 20 minutes to remove oxygen, and stir for 10 hours in an ice bath.
[0043] 2) Weigh 1gGO, add 100mL water, ultrasonically disperse for 20min, add it into the reaction system, and stir at room temperature for 12h. After the reaction was completed, the product was centrifuged and washed with water, and then freeze-dried to obtain the macromolecular initiator GO-Br.
[0044] 3) Disperse 1g of initiator GO-Br in 40mL DMF and sonicate for 10min, add 3.33g of styrene and 1.67g of tert-butyl acrylate, 0.25g of PMDETA, 0.125g of CuBr, remove the water and oxygen in the system, react at 90°C for 20h, and react After the end, 1.67g of trifluoroacetic acid solvent was added for hydrolysis. After the reaction, it was filtered, washed repeatedly with solvent and ethanol, and dried in vacuum for 24 hours to obtain p...
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