Method for preparing low-intensity radiation coated films
A coating film and low-strength technology, which is applied in the field of coating film preparation, can solve the problems of difficult battery discharge capacity and increased battery internal resistance, and achieve the goal of improving cycle performance, improving discharge performance, and reducing impedance Effect
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Embodiment 1
[0026]In the reactor, mix acetone and dimethylformamide at a volume ratio of 4:1 to obtain a mixed solution. Add 1.25% by weight of the weight of the mixed solution and aluminum phosphate with a particle size of 5 nm that has been treated by atmospheric pressure glow discharge for 1 min, and ultrasonically oscillate for 15 min to obtain a uniformly mixed suspension. Add 2.5% by weight of the mixed solution weight and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 1.5 million to the suspension, then add 1.25% by weight of the mixed solution weight and polymethyl methacrylate with an average molecular weight of 800,000, Ultrasonic oscillation for 25min. Stir at 60°C for 9 h to turn the solution in the reactor into a viscous liquid. Both surfaces of the polypropylene monolayer film (thickness 20 µm) were treated with corona discharge for 5 min each. The viscous liquid was coated on both surfaces of the treated single-layer film, so that the tota...
Embodiment 2
[0029] In the reactor, mix acetone and dimethylformamide according to the volume ratio of 0.5:1 to obtain a mixed solution. Add 0.5% by weight of the weight of the mixed solution and ferric phosphate with a particle size of 1 nm that has been treated by radio frequency low-temperature plasma discharge for 10 s, and oscillate ultrasonically for 1 min to prepare a uniformly mixed suspension. Add 1% weight of the mixed solution weight and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 200,000 to the suspension, then add 0.5% weight of the mixed solution weight and polymethyl methacrylate with an average molecular weight of 600,000, Ultrasonic oscillation for 10min. Stir at 50°C for 8 h to turn the solution in the reactor into a viscous liquid. Spread the polyethylene monolayer film flat, treat one surface of the monolayer film with radio frequency low-temperature plasma discharge for 10s, and then coat the viscous liquid on one surface of the mon...
Embodiment 3
[0031] In a reaction kettle, acetone and dimethylformamide were mixed according to a volume ratio of 10:1 to prepare a mixed solution. Add 2.5% by weight of the weight of the mixed solution and treat with low-temperature plasma for 5 minutes and yttrium phosphate with a particle size of 5 μm. Ultrasonic oscillation for 30 minutes to obtain a well-mixed suspension. Add 5% weight of the mixed solution weight and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 2,800,000 to the suspension, then add 2.5% weight of the mixed solution weight and polymethyl methacrylate with an average molecular weight of 1,600,000, Ultrasonic oscillation for 50min. Stir at 90°C for 12 h to turn the solution in the reactor into a viscous liquid. Spread the PP / PE / PP multilayer film flat, treat it with jet low-temperature plasma discharge for 10 minutes, coat the viscous liquid on one surface of the treated multilayer film, and dry it in vacuum at 110°C and 0.00001 atmo...
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