Tare da ci gaba da faɗaɗa buƙatar makamashi, ana sa ran kasuwar capacitor na fina-finai ta China za ta sake shiga wani babban lokaci na ci gaba a cikin shekaru masu zuwa. Fim ɗin polypropylene, babban kayan capacitor na fina-finai, yana ci gaba da faɗaɗa gibin wadata da buƙata saboda faɗaɗa buƙata cikin sauri da kuma sakin ƙarfin samarwa a hankali. Labarin wannan makon zai yi nazari kan ainihin kayan capacitor na fina-finai - fim ɗin polypropylene (fim ɗin PP).

A ƙarshen shekarun 1960, fim ɗin lantarki na polypropylene ya zama ɗaya daga cikin manyan fina-finan lantarki guda uku saboda halayensa na musamman na lantarki da sarrafawa da kuma kyakkyawan aikin farashi, kuma ana amfani da shi sosai a masana'antar capacitor mai ƙarfi. A farkon shekarun 1980, samar da capacitors na fim ɗin polypropylene mai ƙarfe ya riga ya fara a ƙasashen da suka ci gaba a Turai da Amurka, yayin da China har yanzu tana cikin matakin haɓaka capacitors na fim ɗin polypropylene mai ƙarfe. Sai kawai ta hanyar gabatar da fasahar kera capacitor na fim ɗin polypropylene mai ƙarfe da kayan aiki masu mahimmanci muka sami capacitors na fim ɗin polypropylene mai ƙarfe a zahiri.

Bari mu fahimci yadda ake amfani da fim ɗin polypropylene a cikin capacitors na fim da kuma ɗan taƙaitaccen gabatarwa. Capacitors na fim ɗin polypropylene suna cikin ajin capacitor na halitta, matsakaicinsa fim ɗin polypropylene ne, electrode yana da nau'in mai masaukin ƙarfe da nau'in fim ɗin ƙarfe, zuciyar capacitor an naɗe ta da resin epoxy ko kuma an lulluɓe ta a cikin akwati na filastik da ƙarfe. Capacitor ɗin polypropylene da aka yi da electrode na fim ɗin ƙarfe ana kiransa capacitor fim ɗin polypropylene mai ƙarfe, wanda aka fi sani da capacitor fim. Fim ɗin polypropylene resin thermoplastic ne da aka yi ta hanyar polymerizing propylene. Yawanci yana da kauri, tauri, kuma yana da ƙarfi mafi girma, kuma ana iya amfani da shi don fina-finan greenhouse, jakunkunan ɗaukar kaya, da sauransu. Polypropylene polymer ne mara guba, mara ƙamshi, mara ɗanɗano, fari mai madara, polymer mai yawan kristal tare da yawan 0.90-0.91g/cm³ kawai. Yana ɗaya daga cikin nau'ikan filastik mafi sauƙi da ake da su. Yana da ƙarfi sosai ga ruwa, yawan shan ruwa a cikin ruwa shine 0.01% kawai, nauyin kwayoyin halitta shine kimanin 80,000-150,000.

Fim ɗin polypropylene shine babban kayan capacitor na fim. Hanyar ƙera capacitor ana kiranta fim ɗin ƙarfe, wanda ake yin sa ta hanyar amfani da injin cire ƙarfe mai laushi a kan fim ɗin filastik azaman electrode. Wannan na iya rage girman ƙarfin na'urar capacitor, don haka fim ɗin ya fi sauƙi a yi ƙananan capacitors masu ƙarfi. Saman capacitor ɗin ya ƙunshi fim ɗin tushe, foil ɗin ƙarfe, waya, marufi na waje, da sauransu. Daga cikinsu, fim ɗin tushe shine ainihin kayan, kuma bambancin kayan zai sa capacitors na fim su nuna aiki daban-daban. Fim ɗin tushe gabaɗaya ana raba shi zuwa polypropylene da polyester. Mafi kauri fim ɗin tushe, mafi girman ƙarfin da zai iya jurewa, kuma akasin haka, ƙarancin ƙarfin da zai iya jurewa. Fim ɗin tushe shine fim ɗin lantarki na lantarki, kamar yadda dielectric na capacitors na fim shine mafi mahimmancin kayan sama, wanda ke ƙayyade aikin capacitors na fim kuma yana ɗaukar kashi 60%-70% na farashin kayan. Dangane da yanayin kasuwa, masana'antun Japan suna da jagoranci a fannin kayan da ake amfani da su wajen samar da manyan na'urorin daukar fim, inda Toray, Mitsubishi da DuPont su ne manyan masu samar da fina-finai a duniya.

Fina-finan polypropylene na lantarki don sabbin motocin makamashi, wutar lantarki ta photovoltaic da iska galibi suna da yawa tsakanin microns 2 zuwa 4, kuma ƙarfin samarwa ya ragu da fiye da rabi a cikin wannan lokacin idan aka kwatanta da microns 6 zuwa 8 don kayan aikin gida na yau da kullun, wanda ke haifar da raguwar yawan samarwa da koma bayan wadata da buƙata a kasuwa. Samar da fim ɗin polypropylene na lantarki zai iyakance a cikin shekaru masu zuwa. A halin yanzu, ana samar da manyan kayan aikin fim ɗin polypropylene na lantarki na duniya a Jamus, Japan da sauran ƙasashe, kuma zagayowar ginin sabon ƙarfin aiki shine watanni 24 zuwa 40. Bugu da ƙari, buƙatun aiki na sabbin fina-finan mota na makamashi suna da yawa, kuma kamfanoni kaɗan ne kawai ke iya daidaita samar da sabbin fina-finan polypropylene na lantarki na makamashi, don haka a duk duniya, ba za a sami sabon ƙarfin samar da fim ɗin polypropylene a cikin 2022 ba. Ana tattaunawa kan wasu jarin da za a saka a layin samarwa. Saboda haka, akwai yiwuwar samun babban gibin iya aiki ga masana'antar gaba ɗaya a shekara mai zuwa.