Application and preparation method of LCP conductive non-woven fabric in composite separator of lithium battery

A type used for lithium batteries Composite diaphragmThe composite membrane, which combines non-woven fabric with electrospinning, and its preparation method, solves the problem of simple non-woven fabric membranes, Simple electrospinning membraneThe problem A composite separator for lithium batteries, comprising a body; The body includes a substrate layer made of PP fiber melt blown, and LCP polymer solution is sprayed on both sides of the substrate layer to form a double-layer electrospinning layer; The pore size of the body is 150200nm, the porosity of the body is 6268%, and the thickness of the body is 40 μ m Using melt blown non-woven fabric as the receiving substrate, the process is mature and the raw materials are easy to obtain; A composite non-woven membrane with micro/nano scale pore structure was constructed by surface structure modification through electrospinning, aiming to effectively control the surface pore structure of non-woven lithium-ion battery membranes and enhance the mechanical strength of electrospun membranes

⑴ Can be used in product environments that require high heat resistance at 300 ° C

In environments below 300 ° C, the shrinkage rate is also less than 1%, and the product has almost no deformation, making it particularly suitable for masking tapes or gaskets in SMT and other processes.

⑵ Suitable for Foldable products that require heat resistance

When folding products, there are no worries like in Film

⑶ Apply heat-resistant adhesive directly onto non-woven fabric, using heat-resistant tape, especially when used in curved areas for the best effect.

Due to its low heritability (2.7), it can be used in 5G bandwidth of 3GHz, 5GHz, and 28GHz in the future. It can be used in the same area as F-PCB for fast transmission without loss of information.

⑸ Strong chemical resistance, not easily contaminated by other substances, and will not oxidize

⑹ It is an absorbent product that will not affect electrical performance even if it is used for a long time.

LCP non-woven fabric fibers themselves have strong tensile strength and are produced by Melt Blown method. Compared with products from other companies, their tensile strength is quite high Non woven fabric manufacturing does not use adhesives, and its electrical performance is excellent after gold plating