Polypropilene (PP) ni kristaline ikomeye ya termoplastique ikoreshwa mubintu bya buri munsi.Hariho ubwoko butandukanye bwa PP burahari: homopolymer, copolymer, ingaruka, nibindi. Imiterere yubukanishi, umubiri, na chimique ikora neza mubisabwa kuva mumodoka nubuvuzi kugeza gupakira.
Polypropilene ni iki?
Polypropilene ikorwa muri monomer (cyangwa propylene).Ni umurongo wa hydrocarubone.Imiti yimiti ya polypropilene ni (C3H6) n.PP iri muri plastiki zihenze ziboneka muri iki gihe, kandi Ifite ubucucike buke muri plastiki y'ibicuruzwa.Iyo polymerisiyasi, PP irashobora gukora ibintu bitatu byingenzi byuruhererekane bitewe numwanya wa methyl:
Atactic (aPP).Itsinda rya methyl ridasanzwe (CH3) gahunda
Isotactic (iPP).Amatsinda ya Methyl (CH3) yatunganijwe kuruhande rumwe rwumunyururu wa karubone
Syndiotactic (sPP).Guhindura methyl group (CH3) gahunda
PP ni iyumuryango wa polyolefin ya polymers kandi numwe mubambere-batatu bakoreshwa cyane muri iki gihe.Polypropilene ifite porogaramu - nka plastiki ndetse na fibre - mu nganda z’imodoka, mu nganda, ibicuruzwa by’abaguzi, no ku isoko ry’ibikoresho.
Ubwoko butandukanye bwa Polypropilene
Homopolymers na copolymers nubwoko bubiri bwingenzi bwa polypropilene iboneka kumasoko.
Propylene homopolymerni Byinshi Byakoreshejwe Rusange-Intego Urwego.Irimo propylene monomer gusa muri kimwe cya kabiri cya kirisiti.Porogaramu nyamukuru zirimo gupakira, imyenda, ubuvuzi, imiyoboro, imodoka, hamwe n amashanyarazi.
Polypropilene copolymerigabanijwemo kopi yimikorere idasanzwe no guhagarika kopi yimikorere ikorwa na polymerizing ya propene na Ethane:
1. Propylene random copolymer ikorwa na polymerizing hamwe ethene na propene.Igaragaza ibice bya ethene, mubisanzwe bigera kuri 6% kubwinshi, byinjijwe muburyo butemewe muminyururu ya polypropilene.Izi polymers ziroroshye kandi zirasobanutse neza, zituma zikoreshwa mubisabwa bisaba gukorera mu mucyo no kubicuruzwa bisaba isura nziza.
2. Propylene block copolymer irimo ethene yo hejuru (hagati ya 5 na 15%).Ifite co-monomer ibice bitunganijwe muburyo busanzwe (cyangwa guhagarika).Imiterere isanzwe ituma thermoplastique ikomera kandi ntigabanuke kurenza co-polymer idasanzwe.Iyi polymers ikwiranye nibisabwa bisaba imbaraga nyinshi, nkibikoreshwa munganda.
Ubundi bwoko bwa polypropilene ni ingaruka copolymer.Poropilene homopolymer irimo co-ivanze na propylene idasanzwe ya cololymer icyiciro gifite Ethylene ya 45-65% yoherejwe kuri PP ingaruka ya copolymer.Impinduka za kopolymers zikoreshwa cyane mubipakira, ibikoresho byo munzu, firime, hamwe na progaramu ya pipe, ndetse no mubice by'imodoka n'amashanyarazi ..
Polypropilene Homopolymer na Polypropilene Copolymer
Propylene homopolymerifite imbaraga nyinshi-ku-bipimo, kandi irakomeye kandi ikomeye kuruta copolymer.Iyi miterere ihujwe nuburyo bwiza bwo kurwanya imiti no gusudira bituma iba ibikoresho byo guhitamo mubintu byinshi birwanya ruswa.
Polypropilene copolymerni byoroshye ariko bifite imbaraga zingaruka nziza.Birakomeye kandi biramba kuruta propylene homopolymer.Ikunda kugira impungenge nziza zo guhangana nubushyuhe bwo hasi kurenza homopolymer bitwaye kugabanuka gake mubindi bintu.
PP Homopolymer na PP Gukoresha Porogaramu
Porogaramu zirasa cyane kuberako imitungo yabo isangiwe cyane.Nkigisubizo, guhitamo hagati yibi bikoresho byombi bikorwa akenshi bishingiye kubipimo bitari tekiniki.
Kubika amakuru kubyerekeranye nimiterere ya thermoplastique mbere yingirakamaro.Ibi bifasha muguhitamo neza thermoplastique ya porogaramu.Ifasha kandi mugusuzuma imikoreshereze yanyuma ibisabwa byuzuzwa cyangwa bitarangiye.Dore ibintu bimwe byingenzi ninyungu za polypropilene:
Gushonga ingingo ya polypropilene.Gushonga ingingo ya polypropilene ibaho murwego.
Om Homopolymer: 160-165 ° C.
● Copolymer: 135-159 ° C.
Ubucucike bwa polypropilene.PP nimwe mumashanyarazi yoroheje muri plastiki yibicuruzwa byose.Iyi mikorere ituma ihitamo neza kuburemere / uburemere - kubika porogaramu.
● Homopolymer: 0.904-0.908 g / cm3
Cop Kopolymer isanzwe: 0.904-0.908 g / cm3
● Ingaruka ya copolymer: 0.898-0.900 g / cm3
Imiti ya polipropilene irwanya imiti
Resistance Kurwanya bihebuje kuri acide ivanze kandi yibanze, alcool, na base
Kurwanya neza aldehydes, esters, hydrocarbone ya alifatique, na ketone
Resistance Kurwanya hydrocarbone ya aromatic na halogene hamwe na okiside
Izindi ndangagaciro
● PP igumana imiterere yubukanishi n’amashanyarazi ku bushyuhe bwo hejuru, mu bihe by'ubushuhe, kandi iyo byarohamye mu mazi.Ni plastiki yangiza amazi
PP ifite imbaraga zo guhangana n’ibidukikije no gucika
● Irumva ibitero bya mikorobe (bacteria, mold, nibindi)
● Yerekana uburyo bwiza bwo kurwanya sterisile
Ibikoresho bya polymer nkibisobanuro, flade retardants, fibre fibre, minerval, kuzuza ibintu, amavuta, pigment, nibindi byinshi byongeweho birashobora kurushaho kunoza imiterere ya PP kumubiri na / cyangwa ubukanishi.Kurugero, PP ifite imbaraga nke zo kurwanya UV, bityo rero guhagarika urumuri hamwe na amine yabujijwe byongera ubuzima bwa serivisi ugereranije na polypropilene idahinduwe.
Ibibi bya Polypropilene
Kurwanya nabi UV, ingaruka, no gushushanya
Ibishushanyo biri munsi ya −20 ° C.
Ubushyuhe bwo hasi bwa serivisi, 90-120 ° C.
Yibasiwe na aside irike cyane, ikabyimba vuba mumashanyarazi ya chlorine na aromatics
Ubushyuhe-busaza buterwa no guhura nicyuma
Nyuma yo gushushanya ibipimo byimpinduka kubera ingaruka za kristu
Gufata irangi nabi
Porogaramu ya Polypropilene
Polypropilene ikoreshwa cyane mubikorwa bitandukanye bitewe nuburyo bwiza bwo kurwanya imiti no gusudira.Bimwe mubisanzwe bikoreshwa muri polypropilene harimo:
Gupakira Porogaramu
Ibintu byiza bya barrière, imbaraga nyinshi, kurangiza neza, hamwe nigiciro gito bituma polypropilene iba nziza kubintu byinshi bipakira.
Gupakira byoroshye.Filime ya PP nziza cyane kandi isukuye neza hamwe nubushuhe buke bwumuyaga biva muburyo bwo gupakira ibiryo.Andi masoko arimo shrink-firime yuzuye, firime yinganda za elegitoronike, ibishushanyo mbonera byubuhanzi, hamwe nimpapuro zishobora gukoreshwa no gufunga.Filime ya PP iraboneka haba nka firime ya firime cyangwa bi-axial yerekanwe PP (BOPP).
Gupakira neza.PP ihindurwa ibumba ibisanduku, amacupa, ninkono.Ibikoresho bya PP byoroheje bikoreshwa muburyo bwo gupakira ibiryo.
Ibicuruzwa.Polypropilene ikoreshwa mubicuruzwa byinshi byo murugo no gukoresha ibicuruzwa, harimo ibice byoroshye, ibikoresho byo munzu, ibikoresho, ibikoresho, imizigo, n ibikinisho.
Porogaramu yimodoka.Bitewe nigiciro cyacyo gito, imiterere yubukorikori idasanzwe, hamwe nuburyo bworoshye, polypropilene ikoreshwa cyane mubice byimodoka.Porogaramu nyamukuru zirimo amakarito ya batiri na tray, bumpers, fender liners, trim imbere, imbaho zikoreshwa, hamwe nimiryango.Ibindi bintu byingenzi biranga amamodoka ya PP harimo coefficient nkeya yo kwagura umurongo wumuriro hamwe nuburemere bwihariye, kurwanya imiti myinshi hamwe nikirere cyiza, gutunganya, hamwe ningaruka / gukomera.
Fibre n'ibitambara.Umubare munini wa PP ukoreshwa mugice cyisoko kizwi nka fibre nigitambara.Fibre ya PP ikoreshwa murwego rwimikorere, harimo raffia / slit-firime, kaseti, gukenyera, ubwinshi bwamafirime, fibre fibre, spun bond, hamwe na filament ikomeza.Umugozi wa PP na twine birakomeye cyane kandi birwanya ubushuhe, bikwiranye no gukoresha marine.
Gusaba ubuvuzi.Polypropilene ikoreshwa mubikorwa bitandukanye byubuvuzi kubera imiti myinshi na bagiteri birwanya.Na none, urwego rwubuvuzi PP rugaragaza neza kurwanya sterisile.
Siringes ikoreshwa ni ubuvuzi busanzwe bwa polipropilene.Ibindi bikorwa birimo ibikoresho byubuvuzi, ibikoresho byo gusuzuma, ibyokurya bya petri, amacupa yimitsi, amacupa yintangarugero, ibiryo byokurya, amasafuriya, nibikoresho by ibinini.
Gusaba inganda.Amabati ya polypropilene akoreshwa cyane mu nganda mu gukora ibigega bya aside na chimique, amabati, imiyoboro, Gupakira ibintu bitwara ibintu (RTP), n’ibindi bicuruzwa kubera imiterere yabyo nkimbaraga zikomeye, kurwanya ubushyuhe bwinshi, no kurwanya ruswa.
PP isubirwamo 100%.Imashini ya batiri yimodoka, amatara yerekana ibimenyetso, insinga za batiri, sima, guswera, hamwe nuduce twa barafu ni ingero nke zibicuruzwa bishobora gukorwa muri polypropilene ikoreshwa neza (rPP).
Gahunda yo gutunganya PP ikubiyemo ahanini gushonga imyanda ya plastike kugeza kuri 250 ° C kugirango ikureho umwanda hanyuma hakurweho kuvanaho molekile zisigaye munsi ya vacuum no gukomera kuri 140 ° C.Iyi PP ikoreshwa neza irashobora kuvangwa ninkumi PP ku kigero kigera kuri 50%.Ikibazo nyamukuru mu gutunganya PP kijyanye n’amafaranga yakoreshejwe - kuri ubu icupa rya PP hafi 1% ryongeye gukoreshwa, ugereranije n’igipimo cya 98% cyo gutunganya amacupa ya PET & HDPE hamwe.
Ikoreshwa rya PP rifatwa nk’umutekano kuko nta ngaruka zigaragara zituruka ku buzima bw’akazi n’umutekano, ku bijyanye n’uburozi bw’imiti.Kugira ngo umenye byinshi kuri PP reba ubuyobozi bwacu, burimo gutunganya amakuru nibindi byinshi.
Igihe cyo kohereza: Jul-03-2023