Water-based paint for lithium ion battery composite diaphragm, lithium ion battery composite diaphragm and lithium ion battery
A technology for lithium-ion batteries and composite diaphragms, applied in secondary batteries, battery pack components, non-polymer adhesive additives, etc., can solve problems such as poor bonding effect, improve bonding effect, and simplify production Process, effect of reducing coating cost
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Embodiment 1
[0083] Preparation of granular polymer A: Weigh 0.64 parts of surfactant and 400 parts of deionized water into a stirring container, add 65 parts of ethyl acrylate, 5 parts of acrylic acid, 10 parts of acrylonitrile, 10 parts of methyl methacrylate, 10 parts of allyl methacrylate, control the stirring speed at 450±50rpm, stir and heat to 74±1°C, then add 1.2 parts of initiator, keep stirring at 74±1°C for 6h, then raise the temperature to 79±1°C, continue to react for 3h , to obtain a granular polymer A emulsion with a solid content of 20%.
[0084] Preparation of Granular Polymer B: Preparation of Granular Polymer B: Add 60 parts of anhydrous MgSO to a stirred vessel 4 powder and 340 parts deionized water, stirred to make 15wt% MgSO 4 400 parts of aqueous solution, add 5 parts of surfactant, 30 parts of methyl methacrylate, 20 parts of acrylonitrile, 40 parts of ethyl acrylate, 10 parts of allyl methacrylate, control the stirring speed at 450±50rpm, stir and heat up to 80 °...
Embodiment 2
[0090] The difference from Example 1 is that the mass ratio of the granular polymer A emulsion to the granular polymer B emulsion is 0.04:1.
Embodiment 3
[0092] The difference from Example 1 is that the mass ratio of the granular polymer A emulsion to the granular polymer B emulsion is 0.05:1.
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