Polypropilene (PP) ni polimoplastike yongeyeho polymer ikozwe muburyo bwa propylene monomers.Ifite uburyo butandukanye bwa porogaramu, zirimo ibicuruzwa bipfunyika, ibice bya pulasitike ku nganda z’imodoka, hamwe n’imyenda.Abahanga mu bya peteroli ya Philip Paul Hogan na Robert Banks bakoze bwa mbere polypropilene mu 1951, nyuma abahanga mu bumenyi bw’abataliyani n’Abadage Natta na Rehn na bo bakora polypropilene.Natta yatunganije kandi ashushanya ibicuruzwa bya mbere bya polypropilene muri Espagne mu 1954, kandi ubushobozi bwayo bwo korohereza abantu byashishikaje cyane.Kugeza mu 1957, polypropilene yamenyekanye cyane, kandi ibicuruzwa byinshi by’ubucuruzi byari byatangiye mu Burayi.Uyu munsi, ibaye imwe muri plastiki zikoreshwa cyane kwisi.
Agasanduku k'imiti gakozwe muri PP gafunze umupfundikizo
Nk’uko raporo zibyerekana, muri iki gihe isi yose ikenera ibikoresho bya PP igera kuri toni miliyoni 45 ku mwaka, bikaba bivugwa ko mu mpera za 2020 izakenera kwiyongera kugera kuri toni zigera kuri miliyoni 62. Icyifuzo rusange cya PP ni inganda zipakira, bingana na 30% y'ibikoreshwa byose.Iya kabiri ni ugukora amashanyarazi nibikoresho, bitwara hafi 26%.Ibikoresho byo murugo ninganda zimodoka buri kimwe gikoresha 10%.Inganda zubaka zitwara 5%.
PP ifite ubuso buringaniye, bushobora gusimbuza ibindi bicuruzwa bya pulasitike, nk'ibikoresho n'ibikoresho byo mu nzu bikozwe muri POM.Ubuso bworoshye kandi butuma bigora PP gukomera kubindi bice, ni ukuvuga, PP ntishobora guhuzwa neza na kole yinganda, kandi rimwe na rimwe igomba guhuzwa no gusudira.Ugereranije nibindi bya plastiki, PP nayo ifite ibiranga ubucucike buke, bushobora kugabanya uburemere kubakoresha.PP ifite imbaraga zo kurwanya ibishishwa kama nkamavuta mubushyuhe bwicyumba.Ariko PP iroroshye okiside kubushyuhe bwinshi.
Kimwe mu byiza byingenzi bya PP nigikorwa cyacyo cyiza cyo gutunganya, gishobora gukorwa no guterwa inshinge cyangwa gutunganya CNC.Kurugero, mu gasanduku k'imiti ya PP, umupfundikizo uhujwe n'umubiri w'icupa na hinge nzima.Agasanduku k'ibinini karashobora gutunganywa muburyo bwo guterwa inshinge cyangwa CNC.Hinge nzima ihuza umupfundikizo ni urupapuro rwa pulasitike ruto cyane, rushobora kugororwa inshuro nyinshi (rugenda rugera kuri dogere 360) rutavunitse.Nubwo hinge nzima ikozwe muri PP idashobora kwihanganira umutwaro, irakwiriye cyane kumacupa yibikenewe bya buri munsi.
Iyindi nyungu ya PP nuko ishobora guhindurwamo byoroshye nizindi polymers (nka PE) kugirango ikore plastike ikomatanya.Kopolymer ihindura cyane imiterere yibikoresho, kandi irashobora kugera kubikorwa byubwubatsi bukomeye ugereranije na PP nziza.
Ubundi buryo butagereranywa ni uko PP ishobora gukora nkibikoresho bya plastiki nibikoresho bya fibre.
Ibiranga ibyavuzwe haruguru bivuze ko PP ishobora gukoreshwa mubikorwa byinshi: amasahani, tray, ibikombe, ibikapu, ibikoresho bya pulasitike bidasobanutse nibikinisho byinshi.
Ibintu byingenzi biranga PP ni ibi bikurikira:
Kurwanya imiti: alkalis ya acide na acide ntibisubiza hamwe na PP, bigatuma iba ikintu cyiza cyamazi nkaya (nk'imyenda yo kwisiga, ibicuruzwa byihutirwa, nibindi).
Kwiyoroshya no gukomera: PP ifite elastique muburyo runaka bwo gutandukana, kandi izahinduka muburyo bwa plastike itavunitse mugihe cyambere cyo guhindura ibintu, mubisanzwe rero bifatwa nkibikoresho "bikomeye".Gukomera nijambo ryubuhanga risobanurwa nkubushobozi bwibintu byo guhindura (deformasique ya plastike aho kuba elastique deformasique) itavunitse.
Kurwanya umunaniro: PP igumana imiterere yayo nyuma yo kugoreka no kunama.Iyi mikorere ifite agaciro cyane mugukora impeta nzima.
Gukwirakwiza: Ibikoresho bya PP bifite imbaraga nyinshi kandi ni ibikoresho byikingira.
Ihererekanyabubasha: Irashobora gukorwa mu ibara ryeruye, ariko mubisanzwe ikorwa muburyo busanzwe butagaragara hamwe no kohereza amabara.Niba hakenewe transmitance nyinshi, acrylic cyangwa PC igomba guhitamo.
PP ni thermoplastique ifite aho ishonga igera kuri dogere selisiyusi 130, kandi ihinduka amazi nyuma yo gushonga.Kimwe nubundi buryo bwa termoplastique, PP irashobora gushyuha no gukonjeshwa inshuro nyinshi nta kwangirika gukomeye.Kubwibyo, PP irashobora gukoreshwa kandi igasubirana byoroshye.
Hariho ubwoko bubiri bwingenzi: homopolymers na copolymers.Gukoporora byongeye kugabanywa muri kopi yimikorere hamwe na kopi yimikorere idasanzwe.Buri cyiciro gifite porogaramu zidasanzwe.PP bakunze kwitwa ibikoresho by "ibyuma" byinganda za plastiki, kuko birashobora gukorwa hongerwaho inyongeramusaruro kuri PP, cyangwa bigakorwa muburyo budasanzwe, kugirango PP ishobore guhindurwa no guhindurwa kugirango ihuze ibyifuzo byihariye byo gusaba.
PP yo gukoresha inganda rusange ni homopolymer.Hagarika copolymer PP yongewemo na Ethylene kugirango irusheho kurwanya ingaruka.Ibisanzwe copolymer PP ikoreshwa mugukora ibicuruzwa byinshi kandi byoroshye
Kimwe nandi ma plastiki, itangirira kuri "uduce" (amatsinda yoroheje) yakozwe no gutandukanya ibicanwa bya hydrocarubone kandi igahuza nizindi catalizike kugirango ikore plastike ikoresheje polymerisation cyangwa reaction ya reaction.
PP icapiro rya 3D
PP ntishobora gukoreshwa mugucapisha 3D muburyo bwa filament.
PP CNC gutunganya
PP ikoreshwa mugutunganya CNC muburyo bwimpapuro.Mugihe dukora prototypes yumubare muto wibice bya PP, mubisanzwe dukora CNC kubitunganya.PP ifite ubushyuhe buke bwa annealing, bivuze ko ihindurwa byoroshye nubushyuhe, bityo bisaba ubuhanga buhanitse bwo guca neza.
Gutera PP
Nubwo PP ifite kimwe cya kabiri cya kirisiti, biroroshye kuyikora bitewe nubushyuhe buke bwayo bwashushe kandi bitemba neza.Iyi mikorere itezimbere cyane umuvuduko ibikoresho byuzuza ifu.Igabanuka rya PP ni hafi 1-2%, ariko bizatandukana bitewe nibintu byinshi, harimo gufata igitutu, gufata umwanya, ubushyuhe bwo gushonga, uburebure bwurukuta rwububiko, ubushyuhe bwububiko, nubwoko nijanisha ryinyongera.
Usibye porogaramu isanzwe ya plastike, PP nayo irakwiriye cyane gukora fibre.Ibicuruzwa nkibi birimo imigozi, itapi, ibikoresho, imyenda, nibindi.
Ni izihe nyungu za PP?
PP iraboneka byoroshye kandi bihendutse.
PP ifite imbaraga zo guhinduka cyane.
PP ifite ubuso bugereranije.
PP irinda ubushuhe kandi ifite amazi make.
PP ifite imiti irwanya aside muri alkalis zitandukanye.
PP ifite imbaraga zo kurwanya umunaniro.
PP ifite imbaraga zingaruka.
PP ni insuliranteri nziza.
●PP ifite coefficient ndende yo kwagura ubushyuhe, igabanya ubushyuhe bwayo bukoreshwa.
● PP irashobora kwangirika nimirasire ya ultraviolet.
P PP ifite imbaraga zo kurwanya imiti ya chlorine na hydrocarbone nziza.
● PP iragoye kuyitera hejuru kubera imiterere idahwitse.
● PP irashya cyane.
PP iroroshye okiside.
Igihe cyoherejwe: Nyakanga-27-2023