Shanghai Daoqin Plastics Co., Ltd.

         currently, market upper 商业化 锂 battery film main/primary is 以 polyethylene (PE) (PE) and polypropylene (PP) (PP) is micro polyolefin film .

         this category of film relatively low cost, good mechanical properties, excellent chemical stability property and electrical chemical stability property and other advantages by widely used in battery film in.

        实际 application in also 包括 mono 层PP or PE隔 film, di 层PE/PP composite/compounding film and 三层PP/PE/PP composite/compounding film and other.

        锂离子 battery film made methods main/primary separation is dry method and wet method large type.

         dry method is will polyolefin resin melt, pressure, film made formed crystallization property polymer film, crystallization 化处理, rear, to high degree orientation more structure, in high temperature lower 进一步 tensile, will crystallization 面进行剥离, formed more structure, can increase film 孔径.

         wet method also versus separation method or hot versus separation method , will liquid or small separation material and polyolefin resin mixed combined, add hot melt rear, formed uniform mixed combined material, rear drop temperature versus separation 离, pressure made film sheet/slice, again will film sheet/slice add hot 至接近 melting point temperature degree, di toward tensile make separation orientation, most rear temperature time, use easy material 质洗脱残留 solvent agent, made versus 互贯通 micro film.

         dry method process versus for simple, 但孔径 and rate difficult control, product difficult thin ; wet method process film small but also uniform, film more thin, is investment large, process complex.

         new can automotive 需 锂离子动 force battery 往往 requirements battery has more large amount, more high electrical pressure, more long ring property can, more high safety property can, long time stability 输出 均一 property can and is automotive provide accelerated large rate electrical property can.

        因而, requirements film tool has high rate, good lubricating property, relatively high strong/high degree, good hot dimensional stability, combined hot temperature degree and very high hot temperature degree ;

         due to wet method film tool has rate high, strong/high degree high, temperature degree low and other features, currently used for force battery in already formed is 主流.

         currently, production high battery film outer has Asahi Kasei, Japan chemical, Japan UBE, Korea W-Scope, USA Celgard and other.

         Domestic film product and outer has very large separation causes 取决于 Raw Materials.

        国 outer 知名隔 film 厂家都 has specialized material, need 么自己 production raw materials, need and raw materials 厂家联 combined development film specialized material.

         polyolefin film for Raw Materials main/primary has force property can, solvent understanding property, dispersion property, degree and other requirements , used for film production belongs to versus for polymer/macromolecule amount polyolefin specialized material, currently Imported material still has relatively large 份额, Domestic material use amount relatively low.

        ▽ Celanese lower Ticona (Ticona) company launch suitable for electrical film production ultra-high molecular weight polyethylene (PE), tool has high tensile strength, chemical inert property and low property. product specifications is 50-1000万 molecular weight, can according to requirements made product.

        ▽ ExxonMobil chemical industry is chemical 特殊定 made film specialized material , add upper chemical process technology, 产出 隔 film can has improve/increase battery safety property and can property.

        ▽国际 chemical industry 巨头利安德 LyondellBasell (Lyondellbasell) polyolefin specialized material already by formed 功引入 China, suitable for wet method process HDPE GX5028 and suitable for dry method process PP E4462.

        我国石化 enterprise for polyolefin specialized material R&D, production 也做出 不 less formed 果.

        ▽2010 year 8 month, 扬子石化 company independent R&D polypropylene (PP) specialized material PPH-F02-H formed achieve industrial production.

        ▽2011 year 4 month, China 石油兰州石化 company 也 formed achieve 锂 battery film specialized material L402 production.

        ▽2012 year 7 month, 洛 cationic polypropylene (PP) company for new R&D 锂 battery film specialized material F301L进行 试 production, product main/primary technology property can indicators to use demand.

        ▽2012 year 9 month, 北方华锦由 polypropylene (PP) F401 grade 改进而 锂 electrical film raw materials, through electrical film production and application property can testing.

        ▽ more 引人注目 is 2017 year 5 month 27 day 扬子石化首次 formed production 锂离子 battery film use 特 polymer/macromolecule amount polyethylene (PE) new product YEV-4500, positive 式开始进行 market 推广, this new product 填补 国 inner 空白, Imported product 垄断, is 扬子石化 in high polyolefin field/area also one-time breakthrough.

        特 polymer/macromolecule amount polyethylene (PE) (UHMWPE) due to its excellent property can, can 改进隔 film high temperature melt property (HTMI), significantly improve/increase film temperature degree, HTMI for/regarding improve/increase electrical mixed combined force automotive safety important; meanwhile also will 赋予隔 film more high strong/high degree, more high rate and machine strong/high degree, is manufacturing high battery film Raw Materials.