Steel-plastic film for lithium battery flexible package and preparation method of film
A flexible packaging and lithium battery technology, applied in battery pack parts, chemical instruments and methods, circuits, etc., can solve the problems of insufficient surface roughness of stainless steel foil, poor drawing performance of steel-plastic film, insufficient interlayer peeling force, etc. , to achieve good strength and hardness, deal with volume expansion, slow down the effect of aging
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Embodiment 1
[0032]Such asfigure 1As shown, a lithium battery soft package steel film includes a plastic substrate layer 1, a first adhesive layer 2, a modified stainless steel foil layer 3, a second adhesive layer 4, and a plastic heat sealing layer 5; The modified stainless steel foil layer 3 is obtained by a rare earth oxide particle layer 32 by a magnetron-controlled sputtering method with a rare earth element. The modified stainless steel foil layer 3 is bonded to the plastic heat sealing layer 5 and the substrate layer 1 by the first adhesive layer (2) and the second adhesive layer (4).
[0033]In the present embodiment, the content of the rare earth element contained in the stainless steel foil base layer 31 is ruthenium, the content is 10 ppm; the rare earth oxide containing the rare earth oxide particles 32 is cerium oxide, thickness of 2 μm; stainless steel foil base layer The thickness of 31 is 50 μm.
[0034]The preparation of the plastic substrate layer 1 may be a polyamide, a polyester, ...
Embodiment 2
[0041]In the present embodiment, the rare earth element contained in the stainless steel foil base layer 31 is cerium, the content is 50 ppm; the rare earth oxide layer of magnetron sputter is made of cerium oxide, the thickness is 2 μm; the stainless steel foil base layer 31 has a thickness of 10 μm.
[0042]The preparation of the plastic substrate layer 1 may be a polyamide, a polyester, a polyimide; the present embodiment is a polyimide. The first adhesive layer 2 may be one or more of a polyurethane adhesive, an epoxy resin adhesive, an acrylic resin adhesive, a polyester adhesive; the present embodiment is a polyurethane adhesive. The second adhesive layer 4 may be one or more of an acrylic resin adhesive, an epoxy resin adhesive, an acid-modified polypropylene resin; an acrylic resin adhesive. The plastic thermal sealing layer 5 may be one or more of polyolefin, cyclic polyolefin; the present embodiment is a cyclic polyolefin.
[0043]The above feedstock was prepared according to th...
Embodiment 3
[0045]In the present embodiment, the rare earth element contained in the stainless steel foil base layer 31 is ruthenium, the content is 100 ppm; the rare earth oxide layer of magnetron sputter is made of cerium oxide, the thickness of 2 μm; the thickness of the stainless steel foil base 31 is 100 μm.
[0046]The preparation of the plastic substrate layer 1 may be a polyamide, a polyester, a polyimide; the present embodiment is a polyamide. The first adhesive layer 2 can be one or more of a polyurethane adhesive, an epoxy resin adhesive, an acrylic resin adhesive, a polyester adhesive; the present example is an epoxy resin adhesive. The second adhesive layer 4 may be one or more of an acrylic resin adhesive, an epoxy resin adhesive, an acid modified polypropylene resin; the present embodiment is an acid-modified polypropylene resin. The plastic heat sealing layer 5 may be one or more of polyolefin, cyclic polyolefin; the present embodiment is a polyolefin.
[0047]The above feedstock was ...
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Abstract
Description
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Application Information
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