Aluminum-plastic film composite layer and secondary battery
A composite layer and aluminum-plastic film technology, which is applied in the repair/maintenance of secondary batteries, battery pack parts, synthetic resin layered products, etc., can solve the problem of reducing the electrochemical performance of secondary batteries, poor protection of secondary batteries, Secondary battery short circuit and other problems, to achieve the effect of low production cost, protect the battery cell, and avoid short circuit
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Embodiment 1
[0055] (1) Preparation of aluminum-plastic film composite layer
[0056] At 25°C, the silica particles with a median particle size of 120nm and the polypropylene glycol liquid were mechanically stirred and mixed for 30 minutes on a planetary stirring device at a mass ratio of 50:50 to obtain a shear-intensified mixture with a viscosity of 2000±500Pa·S. thick liquid;
[0057] Such as image 3 As shown, both sides of the cut polyester material with a thickness of 10 μm and a porosity of 42% are immersed in the prepared shear thickening liquid for 2 hours, and then the immersion shear thickening liquid Polyester material (i.e. the porous sublayer of the second polymer layer), non-porous PP material with a thickness of 20 μm (i.e. the non-porous sublayer of the second polymer layer), aluminum foil with a thickness of 40 μm (i.e. the aluminum foil layer) and a thickness of The 25 μm non-porous PE material (that is, the first polymer layer) is sequentially hot-pressed to obtain th...
Embodiment 2
[0064] (1) Preparation of aluminum-plastic film composite layer
[0065] At 25°C, mix aluminum oxide particles with a median particle size of 600nm and a methoxy-terminated polysiloxane liquid at a mass ratio of 40:60 under ultrasonic waves for 60 minutes to obtain a viscosity of 1500±300Pa·S shear thickening liquid;
[0066] Such as image 3 As shown, the prepared shear thickening liquid is sprayed on both sides of the cut PP material with a thickness of 12 μm and a porosity of 50%, and the spraying is repeated 5 times, and then the PP material sprayed with the shear thickening liquid ( That is, the porous sublayer of the second polymer layer), another non-porous PP material with a thickness of 20 μm (ie, the non-porous sublayer of the second polymer layer), aluminum foil with a thickness of 40 μm (ie, the aluminum foil layer) and a 25 μm thick The non-porous PE material (that is, the first polymer layer) is sequentially hot-pressed to obtain the aluminum-plastic film compo...
Embodiment 3
[0071] (1) Preparation of aluminum-plastic film composite layer
[0072] At 25 ° C, the polystyrene particles with a median particle size of 5 μm and the ethoxy-terminated polysiloxane liquid were mechanically stirred on a planetary stirring device for 3.5 hours at a mass ratio of 60:40 to obtain a viscosity of 4000± 500Pa·S shear thickening liquid;
[0073] Such as image 3 As shown, the two sides of the cut PP / PE composite material with a thickness of 15 μm and a porosity of 58% are immersed in the prepared shear thickening liquid for 5 hours, and then the immersed shear thickening liquid PP / PE composite material (that is, the porous sublayer of the second polymer layer), non-porous PP material with a thickness of 20 μm (that is, the non-porous sublayer of the second polymer layer), and aluminum foil with a thickness of 40 μm (that is, the aluminum foil layer) And the non-porous PE material (that is, the first polymer layer) with a thickness of 25 μm is sequentially hot-pr...
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