Base membrane of swelling adhesive tape for lithium battery and swelling adhesive tape for lithium battery
A technology of lithium battery and base film, applied in the direction of adhesive, heat-activated film/sheet, pressure-sensitive film/sheet, etc., can solve the problem that the swollen tape cannot effectively fill the gap of lithium battery, dissolve out of shape, and the mechanics of the base layer decrease, etc. Achieve the effect of simple structure, no shrinkage in expansion ratio, good swelling performance and temperature resistance
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Embodiment 1
[0051] A swelling adhesive tape for a lithium battery comprises a base film and an adhesive layer compounded with the base film.
[0052] The above base film applied to the swelling tape for lithium batteries, the raw materials used to prepare the base film include 98.3% ethylene-vinyl acetate copolymer, 1% 2,5-dimethyl-2,5-bis(tert-butyl peroxide) Oxygen) hexane, 0.2% antioxidant 1010, 0.5% opening smooth agent; wherein the content of vinyl acetate monomer in the ethylene-vinyl acetate copolymer is 50%.
[0053] Above-mentioned base film is prepared by following method:
[0054] Step 1. Melt and blend the raw materials used to prepare the base film with a twin-screw extruder at 100°C to obtain a melt, extrude the melt to obtain material particles of the base film, and control the temperature of the melt to 100°C; The length-to-diameter ratio of the twin-screw extruder screw is 45:1;
[0055] Step 2, preparing the material particles of the base film into a thin film under he...
Embodiment 2
[0061] A swelling adhesive tape for a lithium battery comprises a base film and an adhesive layer compounded with the base film.
[0062] The above base film applied to the swelling tape for lithium batteries, the raw materials used to prepare the base film include 88% ethylene-vinyl acetate copolymer, 10% 2,5-dimethyl-2,5-bis(tert-butyl peroxide) Oxygen) hexane, 0.5% antioxidant 1010, 1.5% opening smoothing agent; wherein the content of vinyl acetate monomer in the ethylene-vinyl acetate copolymer is 80%, and the above contents are all percentages by weight.
[0063] Above-mentioned base film is prepared by following method:
[0064] Step 1. Melt and blend the raw materials used to prepare the base film with a twin-screw extruder at 80°C to obtain a melt, extrude the melt to obtain material particles of the base film, and control the temperature of the melt to 100°C; The length-to-diameter ratio of the twin-screw extruder screw is 40:1;
[0065] Step 2, preparing the materi...
Embodiment 3
[0071] A base film applied to swelling adhesive tapes for lithium batteries, comprising 99% ethylene-vinyl acetate copolymer, 0.1% dicumyl peroxide, 0.3% antioxidant 168, and 0.6% opening slippery agent; wherein ethylene- The content of the vinyl acetate monomer in the vinyl acetate copolymer is 10%, and the above contents are all percentages by weight.
[0072] Above-mentioned base film is prepared by following method:
[0073] Step 1. Melt and blend the raw materials used to prepare the base film with a twin-screw extruder at 90°C to obtain a melt, extrude the melt to obtain material particles of the base film, and control the temperature of the melt to 100°C; The length-to-diameter ratio of the twin-screw extruder screw is 48:1;
[0074] Step 2, preparing the material particles of the base film into a thin film under heating conditions, and the heating temperature is 90°C;
[0075] Step 3, subjecting the film to a high-temperature vulcanization treatment at 180° C. to obt...
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Abstract
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