Green polymer packaging film with excellent vapor and oxygen barrier properties and preparation method of green polymer packaging film
A polymer packaging film, barrier technology, applied in transportation and packaging, chemical instruments and methods, packaging, etc., can solve problems such as poor barrier performance and degradation performance, achieve low cost, excellent water vapor and oxygen barrier properties, Simple production process
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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 12kPa 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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