Modification method of diaphragm with polymethyl methacrylate-mica coating agent
A technology of polymethyl methacrylate and coating agent, applied in the direction of electrical components, circuits, battery pack components, etc., can solve problems affecting performance, matching problems, increasing battery internal resistance, etc., and achieve low raw material cost , matching improvement, and the effect of increasing the discharge capacity
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Embodiment 1
[0019] In the reactor, mix acetone and dimethylformamide according to the volume ratio of 2:1 to prepare mixed solution 2. Add 2% by weight of the weight of the mixed solution 2 and sericite with a particle size of 100 nm, and ultrasonically vibrate for 20 min to obtain a uniformly mixed suspension. Add 3.3% of the weight of the mixed solution 2 and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 1 million to the suspension, add 5% of the weight of the mixed solution 2 and polymethacrylic acid with an average molecular weight of 1.5 million Methyl ester, ultrasonic vibration for 30min. Stir at 60°C for 10 h to turn the solution in the reactor into a viscous liquid.
[0020] Put the two surfaces of the polyethylene monolayer film under atmospheric pressure glow discharge treatment for 15s each, coat the viscous liquid on the surface of the treated monolayer film, and dry it by blowing at 70°C to obtain the coated polymer physical film.
[0021...
Embodiment 2
[0024] In the reactor, mix butanone and dimethylformamide according to the volume ratio of 0.01:1 to prepare mixed solution 2. Add 0.1% by weight of the weight of the mixed solution 2 and phlogopite with a particle size of 1 nm, and ultrasonically oscillate for 1 min to prepare a uniformly mixed suspension. Add 0.5% by weight of the mixed solution 2 weight and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 200,000 to the suspension, then add 1% by weight of the mixed solution 2 with an average molecular weight of 1,000,000 polymethyl methacrylate ester, ultrasonically oscillated for 10 min, and stirred at 50°C for 9 h to transform the solution in the reactor into a viscous liquid.
[0025] Put the two surfaces of the polypropylene monolayer film under the glow discharge of subatmospheric pressure and treat them for 10 s respectively, coat the viscous liquid on the surface of the treated monolayer film, and dry it by blasting at 70°C to obtain t...
Embodiment 3
[0028] In the reactor, mix butanone and dimethylformamide according to the volume ratio of 12:1 to prepare mixed solution 2. Add 5% by weight of the weight of the mixed solution 2 and conductive mica with a particle size of 5 μm, and ultrasonically vibrate for 30 minutes to obtain a uniformly mixed suspension. Add 20% by weight of the mixed solution 2 and polyvinylidene fluoride-hexafluoropropylene with an average molecular weight of 3,000,000 to the suspension, and then add 5% by weight of the mixed solution 2 with an average molecular weight of 1,800,000 polymethyl Methyl acrylate, ultrasonic vibration for 50min. Stir at 90°C for 12 h to turn the solution in the reactor into a viscous liquid.
[0029] Put one PP surface of the PP / PE / PP composite film under the condition of low-temperature plasma discharge, treat it for 10 minutes, coat the viscous liquid on the surface of the treated composite film, and dry it in vacuum at 120°C to obtain the coating polymer film.
[0030...
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