Intangiriro: Nka kimwe muri plastiki rusange rusange, pp irashobora kugaragara ahantu hose mubuzima bwa buri munsi. Ifite isuku yo hejuru kuruta pc isanzwe. Nubwo bidafite amabara menshi ya ABS, PP ifite ubuziranenge bwo hejuru n'amabara. Munganda, PP ibikoresho bikunze gukoreshwa mubikoresho byo gupakira nkaamacupa ya plastiki, icupa, Amacupa, etc. Nakemuye naRbKandi basangiye numunyururu wo gutanga:
Izina ryamashusho: PolyproPylene
Izina ryicyongereza: Polypropylene (ivugwa nka pp)
PP ni kristalline polymer. Muri plastike ikoreshwa, pp niworoheje, hamwe nubucucike bwa 0.91g / cm3 (munsi yamazi). Mubikorwa rusange bya plastiki, pp ifite itandukaniro ryubushyuhe bwiza. Ubushyuhe bwo kugoreka ubushyuhe ni 80-100 ° C kandi bushobora gutekwa mumazi abira. PP ifite imihangayiko myiza yo kurwanya no mubuzima bwinshi bwumunani. Bizwi cyane nka "plastiki 100%". Imikorere yuzuye ya PP iruta iyo mikorere ya pe. PP Ibicuruzwa bifite uburemere bwumucyo, gukomera hamwe nibidarwanya imiti.
Ibibi bya PP: Ubwuzuzanye buke, gukomera bidahagije, byoroshye kurwanya ikirere, byoroshye kubyara "imiterere ya popfate", bimaze kubyara, biroroshye kumera, kandi byoroshye kuyihindura.
01
Kubumba ibiranga
1) Ibikoresho bya Crystalline bifite hygroscopique bike kandi bikunze gushonga, kandi biroroshye kubora mubyo guhura nicyuma gishyushye.
2) Amazi ni meza, ariko agace kagabana no kugabanuka ni incuro nini, kandi igabanuka, amenyo, hamwe no guhinduranya ibintu byoroshye kubaho.
3) Umuvuduko ukonje wihuta, gahunda yo gusuka hamwe na sisitemu yo gukonjesha igomba gutandukanya buhoro buhoro, kandi witondere kugenzura ubushyuhe bubi. Ubushyuhe bwibintu biroroshye kwifashisha ubushyuhe buke no guhatira cyane. Iyo ubushyuhe buke burenze dogere 50, igice cya plastike ntabwo cyoroshye, kandi biroroshye kubyara ukurenza, kandi biroroshye gutanga umusaruro mubi, kandi biroroshye gutangara
4) Ubunini bwa plastike bugomba kuba kimwe kugirango wirinde kubura inkweto kandi zikarishye kugirango wirinde kwibanda.
02
Inzira
PP ifite amazi meza yo gushonga nubushyuhe bwiza. PP ifite ibiranga bibiri mugutunganya
Imwe: viscosity ya PP yashonga igabanuka cyane hamwe no kwiyongera kw'ibipimo by'iminsi (bidahuye n'ubushyuhe)
Icya kabiri: urwego rwicyerekezo cya molecular ni hejuru kandi igipimo cyimyanda ni hejuru.
Ubushyuhe bwo gutunganya bwa PP bugera kuri 200-300 ℃. Ifite ubushyuhe bwiza bwumuriro (ubushyuhe bwo kubora ni 310 ℃), ariko ku bushyuhe bwinshi (270-300 ℃), birashobora gutesha agaciro niba biguma muri barri igihe kirekire. Kuberako viscosiya ya PP igabanuka cyane hamwe no kwiyongera k'umuvuduko w'amavuta, kongera intanga igitutu no gutera inshinge bizamura amazi no kunoza indwara yo kugabanuka no kunoza indwara yo kugabanuka no kunoza indwara yo guhungabanya no kwiheba. Ubushyuhe bwa Mold bugomba kugenzurwa murwego rwa 30-50 ℃. PP irashonga irashobora kunyura mu cyuho kigufi cyane no kugaragara imbere. Muburyo bwo gushonga bwa PP, igomba gukuramo ubushyuhe bwinshi bwa Fusion (ubushyuhe bunini), kandi ibicuruzwa birashyushye nyuma yo gusohora kuva kubumba. Ibikoresho bya PP ntibikeneye gukama mugihe cyo gutunganya, hamwe nigipimo cya gari ntoya na kristu ya pp iri munsi yubwa pe.
03
INGINGO ZO KUBONA MU GUKORESHWA
Gutunganya plastiki
PP nziza ya pp ivoka nziza kandi irashobora gukingirwa mumabara atandukanye. PP irashobora kurangizwa gusa mumabara yashizwemo imashini rusange, ariko icyitegererezo zimwe zifite ibintu byigenga byigenga bishimangira ingaruka zivanga, kandi zirashobora kandi gukimba hamwe na Toner.
Ibicuruzwa byakoreshejwe hanze mubisanzwe byuzuyemo uv stabilizers na karubone. Ikigereranyo cyibikoresho byongeye gukoreshwa ntigikwiye kurenga 15%, bitabaye ibyo bizatera imbaraga zigabanuka no kubora no gukumira. Mubisanzwe, nta buvuzi bwihariye bwumuka busabwa mbere yo gutunganya guterura kwa PP.
Gutera inshinge Guhitamo Imashini
Nta bisabwa byihariye kugirango uhitemo imashini zitera inshinge. Kuberako PP ifite koroshya. Imashini ishinyagurira kuri mudasobwa hamwe nigitutu cyo gutera inshinge hamwe nigenzura ryinshi rirasabwa. Imbaraga za Plampting muri rusange zigenwa na 3800t / m2, hamwe nubunini bwa 20% -85%.
Igishushanyo mbonera
Ubushyuhe bwa Mold ni 50-90 ℃, nubushyuhe bwiburebure bukoreshwa mubisabwa byinshi. Ubushyuhe bwibanze burenze 5 ℃ munsi yubushyuhe bwa cavit, diameter ni 4-7mm, uburebure bwinshi ni 1-1.5mm, kandi diameter irashobora kuba nto nka 0.7mm.
Uburebure bwirembo rya EDGE ni bigufi bishoboka, hafi 0.7mm, ubujyakuzimu ni kimwe cya kabiri cyurukuta, kandi ubugari ni kabiri bwurukuta, kandi byiyongera buhoro buhoro nuburebure bwurukuta.
Ibicuruzwa bigomba kugira imikoranire myiza. Umwobo winjiye ni 0.025mm-0.038mm ndende na 1.5mm ndende. Kugira ngo wirinde ibimenyetso bifatika, koresha ibintu binini kandi bizengurutse abiruka, kandi ubunini bw'imbavu bigomba kuba bito (urugero, 50-60% by'urukuta rw'urukuta).
Ubunini bwibicuruzwa bikozwe muri PP ya Homopolymer ntigomba kurenza 3mm, bitabaye ibyo hazabaho igituba (ibicuruzwa byijimye birashobora gukoresha gusa copolymer pp).
Gushonga
Ingingo yo gushonga pp ni 160-175 ° C, hamwe n'ubushyuhe bwo kubora ni 350 ° C, ariko imiterere yubushyuhe ntishobora kurenga 275 ° C mugihe cyo gutunganya inshinge. Ubushyuhe bwo mu gice cyo gushonga buba bwiza 240 ° C.
Umuvuduko wo gutera inshinge
Kugirango ugabanye imihangayiko n'imbere, inshinge nyinshi zigomba gutoranywa, ariko amanota amwe ya PP n'ibibumba ntibikwiye (imirongo ikwiye (imirongo y'indege mu mwenda w'umuntu). Niba ubuso bwashushanyije bugaragaramo urumuri kandi bwijimye rwakwirakwijwe nirembo, inshinge nkeya zihuta nubushyuhe bwo hejuru bugomba gukoreshwa.
Gushonga Umuvuduko
5bar ushonga ibifatika byinyuma birashobora gukoreshwa, kandi igitutu cyinyuma cyibikoresho bya toner birashobora guhinduka muburyo bukwiye.
Inshinge no gufata igitugu
Koresha igitutu kinini (1500-1800bar) hamwe no gufata igitutu (hafi 80% byumuvuduko wo gutera inshinge). Hindura gufata igitutu hafi 95% byubwonko bwuzuye, kandi ukoreshe igihe kirekire.
Kohereza ibicuruzwa
Kugirango wirinde kugabanuka no guhindura byatewe na nyuma ya Corstallsation, ibicuruzwa muri rusange bigomba kuba byuzuye mumazi ashyushye.
Shanghai Umukororombya Inganda Co, ltdEse uwakoze,Umukororombya ShanghaiTanga kimwe-guhagarara kwisiga.Niba ukunda ibicuruzwa byacu, urashoboraTwandikire,
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Imeri:Bobby@rainbow-pkg.com
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Igihe cyo kohereza: Ukwakira-04-2021