Polypropilene (PP) ni iki kandi ikoreshwa iki?
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 gutegera bwashimishije abantu benshi. Kugeza mu 1957, polypropilene yari ikunzwe cyane, kandi ibicuruzwa byinshi by’ubucuruzi 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. Ikoreshwa ry’ibanze rya PP ni inganda zipakira, bingana na 30% y'ibikoreshwa byose. Iya kabiri ni amashanyarazi n'ibikoresho, bitwara hafi 26%. Ibikoresho byo murugo ninganda zimodoka buri kimwe gikoresha 10%. Inganda zubaka zitwara 5%.

PP ifite ubuso buringaniye kandi irashobora gusimbuza ibindi bicuruzwa bya pulasitike, nk'ibikoresho n'ibikoresho byo mu nzu bikozwe muri POM. Ubuso bunoze 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 ibimera nkamavuta mubushyuhe bwicyumba. Ariko PP iroroshye okiside mubushyuhe 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 hinge nzima. Agasanduku k'ibinini karashobora gutunganywa muburyo bwo guterwa inshinge cyangwa CNC. Hinge nzima ihuza umupfundikizo ni urupapuro rwa plastike ruto cyane rushobora kugororwa inshuro nyinshi (rugenda rugera kuri dogere 360) rutavunitse. Nubwo hinge nzima ikozwe muri PP idashobora kwihanganira umutwaro, irakwiriye cyane kumacupa yibikenerwa bya buri munsi.

Iyindi nyungu ya PP nuko ishobora guhindurwa byoroshye na polymers (nka PE) kugirango ikore plastike ikomatanya. Copolymer 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.

Ni ibihe bintu biranga PP?
Ibintu byingenzi biranga PP ni ibi bikurikira:

Kurwanya imiti: alkali ivanze na acide ntibishobora gukorana na PP, bigatuma iba ikintu cyiza cyamazi nkaya (nk'imyenda yo kwisiga, ibicuruzwa byambere byihutirwa, nibindi).
Kwiyoroshya no gukomera: PP ifite ubudahangarwa 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 guhinduka elastique) utarinze kumeneka.
Kurwanya umunaniro: PP igumana imiterere yayo nyuma yo kugoreka no kunama. Iyi mikorere ifite agaciro cyane mugukora hinges nzima.
Gukingira: 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 iyo igeze aho ishonga. Kimwe nubundi buryo bwa termoplastique, PP irashobora gushyuha no gukonjeshwa inshuro nyinshi nta kwangirika gukomeye. Kubwibyo, PP irashobora gukoreshwa kandi igasubirana byoroshye.

Ni ubuhe bwoko butandukanye bwa PP?
Hariho ubwoko bubiri bwingenzi: homopolymers na copolymers. Gukoporora byongeye kugabanywa muri kopi yimikorere hamwe na kopi yimikorere. Buri cyiciro gifite porogaramu zidasanzwe. PP bakunze kwitwa ibikoresho by "ibyuma" byinganda za plastiki, kubera ko bishobora gukorwa hongerwaho inyongeramusaruro kuri PP, cyangwa bigakorwa muburyo budasanzwe, kugirango PP ibashe 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.

PP ikorwa ite?
Kimwe nibindi bikoresho bya plastiki, bitangirira kuri "uduce" (amatsinda yoroheje) byakozwe no gutandukanya ibicanwa bya hydrocarubone kandi bigahuzwa nizindi catalizike kugirango bibe plastike binyuze muri polymerisation cyangwa polycondensation.

CNC, icapiro rya 3D hamwe nuburyo bwo gutera inshinge
PP icapiro rya 3D

PP ntishobora gukoreshwa mugucapisha 3D muburyo bwa filament.

PP CNC gutunganya

PP ikoreshwa mugutunganya CNC muburyo bw'impapuro. 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 igice cya kirisiti, ifite amazi meza cyane kubera ubukonje bwayo buke, kuburyo byoroshye kuyikora. 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, ubushyuhe bwububiko, nubwoko nijanisha ryinyongera.

Ibindi bikoreshwa
Usibye porogaramu isanzwe ya plastike, PP irakwiriye cyane no 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 nziza zingaruka.
PP ni insuliranteri nziza.
Ni izihe ngaruka mbi za PP?
PP ifite coefficient yo kwaguka yubushyuhe, igabanya ubushyuhe bwayo bukoreshwa.
PP irashobora kwangirika nimirasire ya ultraviolet.
PP ifite imbaraga zo kurwanya imiti ya chlorine na hydrocarbone nziza.
PP iragoye kuyitera hejuru kubera imiterere yayo idahwitse.
PP irashya cyane.
PP iroroshye okiside.
Nubwo ifite amakosa, PP muri rusange ni ibikoresho byiza. Ifite imiterere yihariye yo kuvanga ibindi bikoresho bidashobora kugereranya, ni ukuvuga, irashobora gukoporora hamwe nizindi polymers kugirango ikore ibikoresho, kandi inyongeramusaruro zitandukanye zirashobora kongerwamo, bigatuma ihitamo neza kumishinga myinshi.

Ni ibihe biranga PP?
Mubihe bisanzwe, ni ukuvuga ubushyuhe bwibidukikije bwa 25 ° C nikirere 1 cyumuvuduko.

Izina ry'ikoranabuhanga: Polypropilene (PP)

Imiti yimiti: (C3H6) n


Kode iranga kode (yo gusubiramo):


Ubushyuhe bwo gushonga: 130 ° C.

Ubushyuhe busanzwe bwo gutera inshinge: 32-66 ° C.

Ubushyuhe bwo kugoreka ubushyuhe: 100 ° C (munsi ya 0.46 MPa)

Imbaraga zingana: 32 MPa

Imbaraga zoroshye: 41 MPa

Uburemere bwihariye: 0.91

Igipimo cyo kugabanuka: 1.5-2.0%