Green polymer packaging film with double excellent barrier properties of water vapor and oxygen as well as preparation method of film
A polymer packaging film and barrier technology, which is applied in transportation and packaging, chemical instruments and methods, packaging, etc., can solve the problems of poor barrier performance and degradation performance
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Embodiment 1
[0021] Example 1 Preparation of polymer packaging film with excellent water vapor and oxygen barrier properties
[0022] (1) Preparation of nano-copper oxide mimetic enzyme: according to the molar ratio of copper nitrate: water: sodium citrate is 1: 10: 1, first make a solution of copper nitrate and water, and then add the required molar amount of A saturated solution of sodium citrate was added dropwise to the copper nitrate solution while stirring, and a complex salt solution was obtained after the dropwise addition, and the complex salt solution was placed in a hydrothermal reaction kettle, and reacted at 100° C. for 8 hours, Centrifuge at 6000r / min for 20min, wash with water, vacuum-dry at 5kPa and 60°C for 30min to obtain nano-copper oxide mimetic enzyme;
[0023] (2) Preparation of nano-copper oxide mimetic enzyme coated with hydrophilic modified polyurea porous material: according to the mass ratio of toluene-2,4-diisocyanate: triethylenetetramine: nano-copper oxide mim...
Embodiment 2
[0026] Example 2 Preparation of polymer packaging film with excellent water vapor and oxygen barrier properties
[0027] (1) Preparation of nano-copper oxide mimetic enzyme: according to the molar ratio of copper nitrate: water: sodium citrate is 1: 15: 1, first make a solution of copper nitrate and water, and then add the required molar amount of A saturated solution of sodium citrate was added dropwise to the copper nitrate solution while stirring, and a complex salt solution was obtained after the dropwise addition, and the complex salt solution was placed in a hydrothermal reaction kettle, and reacted at 120° C. for 12 hours, Centrifuge at 8000r / min for 40min, wash with water, vacuum-dry at 20kPa and 80°C for 60min to obtain nano-copper oxide mimetic enzyme;
[0028] (2) Preparation of nano-copper oxide mimetic enzyme coated with hydrophilic modified polyurea porous material: according to the mass ratio of toluene-2,4-diisocyanate: triethylenetetramine: nano-copper oxide m...
Embodiment 3
[0031] Example 3 Preparation of polymer packaging film with excellent water vapor and oxygen barrier properties
[0032] (1) Preparation of nano-copper oxide mimetic enzyme: according to the molar ratio of copper nitrate: water: sodium citrate is 1: 11: 1, first make a solution of copper nitrate and water, and then add the required molar amount of A saturated solution of sodium citrate was added dropwise to the copper nitrate solution while stirring, and a complex salt solution was obtained after the dropwise addition, and the complex salt solution was placed in a hydrothermal reaction kettle, and reacted at 110° C. for 9 h, Centrifuge at 7000r / min for 30min, wash with water, vacuum-dry at 10kPa and 70°C for 50min to obtain nano-copper oxide mimetic enzyme;
[0033] (2) Preparation of nano-copper oxide mimetic enzyme coated with hydrophilic modified polyurea porous material: according to the mass ratio of toluene-2,4-diisocyanate: triethylenetetramine: nano-copper oxide mimeti...
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