Polypropylene (PP) wani tsayayyen thermoplastic crystalline ne da ake amfani dashi a cikin abubuwan yau da kullun.Akwai nau'ikan PP iri-iri iri-iri: homopolymer, copolymer, tasiri, da sauransu. Kayan aikin injiniyanta, na zahiri, da sinadarai suna aiki da kyau a aikace-aikacen da suka kama daga mota da likita zuwa marufi.
Menene Polypropylene?
Ana samar da polypropylene daga propene (ko propylene) monomer.Guduro na hydrocarbon ne na layi.Tsarin sinadarai na polypropylene shine (C3H6) n.PP yana cikin robobi mafi arha samuwa a yau, kuma Yana da mafi ƙarancin yawa tsakanin robobin kayayyaki.Bayan polymerization, PP na iya samar da sifofi na asali guda uku dangane da matsayin ƙungiyoyin methyl:
Atactic (aPP).Tsarin ƙungiyar methyl (CH3) mara daidaituwa
Isotactic (iPP).Ƙungiyoyin Methyl (CH3) sun shirya a gefe ɗaya na sarkar carbon
Syndiotactic (sPP).Madadin ƙungiyar methyl (CH3).
PP na cikin dangin polyolefin na polymers kuma yana ɗaya daga cikin manyan-nau'i-nau'i-nau'i-nau'i masu amfani a yau.Polypropylene yana da aikace-aikace-dukansu azaman filastik kuma azaman fiber-a cikin masana'antar kera motoci, aikace-aikacen masana'antu, kayan masarufi, da kasuwar kayan daki.
Daban-daban na Polypropylene
Homopolymers da copolymers sune manyan nau'ikan polypropylene guda biyu da ake samu a kasuwa.
Propylene homopolymershi ne mafi yadu amfani da janar-manufa sa.Ya ƙunshi kawai propylene monomer a cikin wani siffa mai ƙarfi na Semi-crystalline.Babban aikace-aikacen sun haɗa da marufi, yadi, kiwon lafiya, bututu, motoci, da aikace-aikacen lantarki.
Polypropylene copolymerAn raba bazuwar copolymers da block copolymers samar da polymerizing na propene da ethane:
1. Propylene bazuwar copolymer aka samar da polymerizing tare ethene da propene.Yana fasalta raka'a ethene, yawanci har zuwa 6% ta taro, an haɗa su ba da gangan ba a cikin sarƙoƙin polypropylene.Wadannan polymers suna da sassauƙa kuma suna bayyana a sarari, suna sa su dace da aikace-aikacen da ke buƙatar bayyana gaskiya da samfuran da ke buƙatar kyakkyawan bayyanar.
2. Propylene block copolymer ya ƙunshi babban abun ciki ethene (tsakanin 5 da 15%).Yana da raka'o'in haɗin gwiwar da aka tsara a cikin tsari na yau da kullun (ko tubalan).Tsarin na yau da kullun yana sa thermoplastic ya fi ƙarfi da ƙarancin karyewa fiye da bazuwar co-polymer.Wadannan polymers sun dace da aikace-aikacen da ke buƙatar ƙarfin ƙarfi, kamar amfanin masana'antu.
Wani nau'in polypropylene shine tasirin copolymer.Propylene homopolymer dauke da wani co-gauraye propylene bazuwar copolymer lokaci wanda yana da ethylene abun ciki na 45-65% ana nufin PP tasiri copolymer.Ana amfani da masu amfani da tasirin tasiri a cikin marufi, kayan gida, fim, da aikace-aikacen bututu, haka kuma a cikin sassan motoci da na lantarki.
Polypropylene Homopolymer vs. Polypropylene Copolymer
Propylene homopolymeryana da babban rabo mai ƙarfi zuwa nauyi, kuma yana da ƙarfi da ƙarfi fiye da copolymer.Waɗannan kaddarorin da aka haɗe tare da juriya mai kyau na sinadarai da walƙiya sun sa ya zama kayan zaɓi a yawancin sifofi masu juriya na lalata.
Polypropylene copolymerya ɗan yi laushi amma yana da ƙarfin tasiri mafi kyau.Ya fi ƙarfi kuma ya fi ɗorewa fiye da propylene homopolymer.Yana tabbatar da samun ingantacciyar juriya mai tsauri da ƙarancin zafin jiki fiye da homopolymer akan ɗan rage raguwar wasu kaddarorin.
PP Homopolymer da PP Copolymer Aikace-aikacen
Aikace-aikacen sun yi kusan iri ɗaya saboda yawancin kaddarorin da aka raba su.A sakamakon haka, ana yin zaɓin tsakanin waɗannan kayan biyu sau da yawa bisa ga ka'idodin da ba na fasaha ba.
Tsayawa bayanai game da kaddarorin thermoplastic a gabani yana da fa'ida koyaushe.Wannan yana taimakawa wajen zaɓar madaidaicin thermoplastic don aikace-aikacen.Hakanan yana taimakawa wajen kimanta buƙatun amfani da ƙarshen zai cika ko a'a.Ga wasu mahimman kaddarorin da fa'idodin polypropylene:
Matsayin narkewa na polypropylene.Matsayin narkewa na polypropylene yana faruwa a kewayon.
● Homopolymer: 160-165 ° C
● Copolymer: 135-159 ° C
Yawa na polypropylene.PP yana daya daga cikin mafi sauƙi na polymers a cikin dukkanin robobi na kayayyaki.Wannan fasalin ya sa ya zama zaɓin da ya dace don aikace-aikacen nauyi / nauyi - adanawa.
● Homopolymer: 0.904-0.908 g/cm3
● Bazuwar copolymer: 0.904-0.908 g/cm3
● Tasirin copolymer: 0.898-0.900 g/cm3
Polypropylene sunadarai juriya
● Kyakkyawan juriya ga diluted acid acid, alcohols, da tushe
● Kyakkyawan juriya ga aldehydes, esters, aliphatic hydrocarbons, da ketones
● Iyakantaccen juriya ga aromatic da halogenated hydrocarbons da oxidizing jamiái
Sauran dabi'u
PP yana riƙe da kayan inji da lantarki a yanayin zafi mai tsayi, a cikin yanayi mai laushi, da lokacin nutsewa cikin ruwa.Roba ce mai hana ruwa
● PP yana da kyakkyawar juriya ga matsalolin muhalli da fashewa
● Yana kula da hare-haren ƙananan ƙwayoyin cuta (kwayoyin cuta, mold, da dai sauransu)
● Yana nuna kyakkyawan juriya ga haifuwar tururi
Abubuwan da aka haɗa da polymer kamar masu bayyanawa, masu kashe wuta, filayen gilashi, ma'adanai, masu sarrafa abubuwa, masu mai, pigments, da sauran abubuwan ƙari da yawa na iya ƙara haɓaka kayan aikin PP na zahiri da/ko.Misali, PP yana da ƙarancin juriya ga UV, saboda haka daidaitawar haske tare da hana amines yana haɓaka rayuwar sabis idan aka kwatanta da polypropylene da ba a canza ba.
Rashin amfani da polypropylene
Rashin juriya ga UV, tasiri, da karce
Embrittles kasa da -20 ° C
Ƙananan zafin sabis na sama, 90-120 ° C
Acids oxidizing sosai suka kai wa hari, yana kumbura da sauri a cikin chlorinated kaushi da aromatics
Zaman lafiyar tsufa yana da illa ta hanyar hulɗa da karafa
Canje-canje na girma bayan gyare-gyare saboda tasirin crystallinity
Rashin mannewa fenti
Abubuwan da ake amfani da su na polypropylene
Ana amfani da polypropylene ko'ina a aikace-aikace daban-daban saboda kyakkyawan juriya na sinadarai da weldability.Wasu amfani na yau da kullun na polypropylene sun haɗa da:
Aikace-aikacen tattarawa
Kyakkyawan kaddarorin shinge, ƙarfi mai ƙarfi, kyakkyawan ƙarewa, da ƙarancin farashi suna sanya polypropylene manufa don aikace-aikacen marufi da yawa.
Marufi mai sassauƙa.Fina-finan PP 'kyakkyawan tsaftar gani da ƙarancin watsawa-danshi sun sa ya dace da amfani a cikin marufi na abinci.Sauran kasuwanni sun haɗa da jujjuyawar fina-finai, fina-finan masana'antar lantarki, aikace-aikacen fasahar hoto, da shafukan diaper da kuma rufewa.Ana samun fim ɗin PP ko dai azaman fim ɗin jefa ko PP (BOPP).
Marufi mai tsauri.Ana busa PP don samar da akwatuna, kwalabe, da tukwane.Ana amfani da kwantena na bakin ciki mai katanga don shirya abinci.
Kayayyakin masu amfani.Ana amfani da polypropylene a cikin samfuran gida da yawa da aikace-aikacen kayan masarufi, gami da sassa masu haske, kayan gida, kayan daki, kayan aiki, kaya, da kayan wasan yara.
Aikace-aikacen mota.Saboda ƙarancin tsadarsa, ƙwararrun kaddarorin injiniyoyi, da gyare-gyare, ana amfani da polypropylene ko'ina a cikin sassan mota.Manyan aikace-aikacen sun haɗa da na'urorin baturi da tire, masu ɗorawa, ƙorafi, datsa na ciki, faifan kayan aiki, da datsa ƙofa.Sauran mahimman fasalulluka na aikace-aikacen kera motoci na PP sun haɗa da ƙarancin haɓakar haɓakar haɓakar zafin jiki na madaidaiciya da ƙayyadaddun nauyi, babban juriya na sinadarai da kyakkyawan yanayin yanayi, iya aiwatarwa, da ma'aunin tasiri / ƙarfi.
Fibers da yadudduka.Ana amfani da babban ƙarar PP a cikin ɓangaren kasuwa da aka sani da fibers da yadudduka.Ana amfani da fiber na PP a cikin tarin aikace-aikacen, gami da raffia/fim-slit-fim, tef, madauri, filament mai ci gaba da girma, filaye masu mahimmanci, haɗin haɗin gwiwa, da ci gaba da filament.igiya PP da igiya suna da ƙarfi sosai kuma suna jurewa danshi, sun dace sosai don aikace-aikacen ruwa.
Aikace-aikacen likitanci.Ana amfani da polypropylene a aikace-aikace na likita daban-daban saboda yawan sinadarai da juriya na kwayan cuta.Hakanan, matakin likita na PP yana nuna kyakkyawan juriya ga haifuwar tururi.
sirinji da ake zubarwa shine mafi yawan aikace-aikacen likitanci na polypropylene.Sauran aikace-aikacen sun haɗa da vials na likita, na'urorin bincike, jita-jita na petri, kwalabe na jijiya, kwalabe na samfur, tiren abinci, kwanon rufi, da kwantenan kwaya.
Aikace-aikacen masana'antu.Polypropylene zanen gado ana amfani da ko'ina a cikin masana'antu bangaren don samar da acid da sinadaran tankuna, zanen gado, bututu, Returnable Transport Packaging (RTP), da sauran kayayyakin saboda da kaddarorin kamar high tensile ƙarfi, juriya ga high yanayin zafi, da kuma lalata juriya.
PP ne 100% recyclable.Abubuwan batirin mota, fitilun sigina, igiyoyin baturi, tsintsiya, goge baki, da goge kankara wasu ƴan misalan samfuran ne waɗanda za'a iya yin su daga polypropylene da aka sake yin fa'ida (rPP).
Tsarin sake yin amfani da PP ya ƙunshi narkar da robobin sharar gida zuwa 250 ° C don kawar da gurɓataccen abu sannan a cire ragowar kwayoyin halitta a ƙarƙashin injin da ƙarfi a kusan 140 ° C.Wannan PP da aka sake yin fa'ida za a iya haɗe shi da budurwa PP a kan kudi har zuwa 50%.Babban ƙalubale a cikin sake yin amfani da PP yana da alaƙa da adadin da ake cinyewa - a halin yanzu kusan 1% kwalaben PP ana sake yin fa'ida, idan aka kwatanta da 98% na sake amfani da kwalabe na PET & HDPE tare.
Ana ɗaukar amfani da PP lafiya saboda ba shi da wani tasiri mai ban mamaki daga yanayin lafiyar sana'a da aminci, dangane da gubar sinadarai.Don ƙarin koyo game da PP duba jagorarmu, wanda ya haɗa da bayanan sarrafawa da ƙari.
Lokacin aikawa: Jul-03-2023