PET (Polyethylene terephthalate)
Kuma no korohereza mbere yo guterwa inshinge
Igomba gukama mbere yo kubumba.PET yunvikana cyane kuri hydrolysis.Ubushyuhe bwo guhumeka ikirere ni 120-165 C (248-329 F) mumasaha 4.Ibirungo bigomba kuba munsi ya 0,02%.
Emera sisitemu ya ODEMADE IRD, igihe cyo kumisha gikenera 15min gusa.Zigama ingufu zitwara hafi 45-50%.Ibirungo birashobora kuba 50-70ppm.(Ubushyuhe bwo kumisha, igihe cyo kumisha birashobora guhindurwa nibisabwa nabakiriya kubintu byumye, sisitemu yose igenzurwa na Siemens PLC).Kandi ni ugutunganya hamwe Kuma & Crystallizing mugihe kimwe.
Gushonga ubushyuhe
265-280 C (509-536 F) kumanota atuzuye
275-290 C (527-554 F) kumanota yo gushimangira ibirahure
Ubushyuhe bukabije
80-120 C (176-248 F);Urutonde rukunzwe: 100-110 C (212-230 F)
Umuvuduko wo gutera inshinge
30-130 MPa
Umuvuduko wo gutera
Umuvuduko mwinshi udateze embrittlement
Imashini ibumba inshinge:
Gutera inshinge bikoreshwa cyane cyane mugutezimbere PET.Mubisanzwe, PET irashobora gukorwa gusa nimashini ibumba inshinge.
Nibyiza guhitamo umugozi wa mutant ufite impeta ihindagurika hejuru, ifite uburemere bunini bwo hejuru kandi ikarwanya kwambara, kandi igipimo cya aspect ntabwo ari L / D = (15 ~ 20): igipimo cya compression cya 3: 1.
Ibikoresho bifite L / D nini cyane biguma muri barrale igihe kirekire, kandi ubushyuhe bukabije burashobora gutera kwangirika kandi bikagira ingaruka kumikorere.Ikigereranyo cyo guhunika ni gito cyane kugirango gitange ubushyuhe buke, biroroshye guhindagura plastike, kandi bifite imikorere mibi.Ku rundi ruhande, kumeneka kw'ibirahuri bizaba byinshi kandi imiterere ya fibre ya fibre izagabanuka.Iyo fibre yikirahure ishimangiwe PET ishimangiwe, urukuta rwimbere rwikariso rwambarwa cyane, kandi ingunguru ikozwe mubintu bidashobora kwambara cyangwa bigashyirwa hamwe nibikoresho bidashobora kwambara.
Kubera ko nozzle ari ngufi, urukuta rw'imbere rugomba kuba hasi kandi aperture igomba kuba nini ishoboka.Nozzle yubwoko bwa hydraulic feri ya valve nibyiza.Urusenda rugomba kugira ingamba zo kugenzura no kugenzura ubushyuhe kugira ngo amajwi adakonja kandi ahagarike.Nyamara, ubushyuhe bwa nozzle ntibukwiye kuba hejuru cyane, bitabaye ibyo bizatera gutemba.Umuvuduko muke wa PP ibikoresho bigomba gukoreshwa kandi ingunguru isukuye mbere yo gutangira gukora.
Ibintu nyamukuru byo guterwa inshinge kuri PET
1, ubushyuhe bwa barriel.Ubushyuhe bwubushyuhe bwa PET buragufi, kandi ubushyuhe buzagira ingaruka kumikorere yibicuruzwa.Niba ubushyuhe buri hasi cyane, ntabwo aribyiza guhindagura ibice bya plastiki, dent, no kubura inenge yibintu;muburyo bunyuranye, niba ubushyuhe buri hejuru cyane, bizatera kumeneka, nozzles zizatemba, ibara rihinduka umwijima, imbaraga za mashini zizagabanuka, ndetse no kwangirika bizabaho.Muri rusange, ubushyuhe bwa barrale bugenzurwa kuri 240 kugeza 280 ° C, naho fibre yikirahure ishimangira ubushyuhe bwa PET ni 250 kugeza 290 ° C. Ubushyuhe bwa nozzle ntibugomba kurenga 300 ° C, kandi ubushyuhe bwa nozzle mubusanzwe buri hasi kurenza ubushyuhe bwa barriel.
2, ubushyuhe.Ubushyuhe bwububiko bugira ingaruka ku buryo butaziguye igipimo cyo gukonjesha hamwe na kristu yo gushonga, kristu iratandukanye, kandi imiterere yibice bya plastiki nayo iratandukanye.Mubisanzwe, ubushyuhe bwububiko bugenzurwa kuri 100 kugeza 140 ° C.Indangagaciro ntoya irasabwa mugihe ukora ibice bya pulasitike bito.Mugihe ukora ibice bya pulasitike byimbitse, birasabwa kugira agaciro gakomeye.
3. Umuvuduko w'inshinge.PET yashonga ni amazi kandi byoroshye gukora.Mubisanzwe, umuvuduko wo hagati urakoreshwa, umuvuduko ni 80 kugeza 140 MPa, naho ikirahuri cya fibre cyongerewe imbaraga PET gifite umuvuduko wa inshinge wa MPa 90 kugeza 150.Umuvuduko watewe inshinge ugomba kugenwa harebwa ubwiza bwa PET, ubwoko nubunini bwuzuza, aho ubunini nubunini bw irembo, imiterere nubunini bwigice cya plastiki, ubushyuhe bwububiko, nubwoko bwimashini ibumba inshinge. .
Nangahe uzi ibijyanye no gutunganya plastike ya PET?
1, gutunganya plastike
Kubera ko PET macromolecules irimo lipide base kandi ifite hydrophilique runaka, ibice byumva amazi kubushyuhe bwinshi.Iyo ubuhehere burenze imipaka, uburemere bwa molekile ya PET buragabanuka, kandi ibicuruzwa bigira amabara bigahinduka byoroshye.Muri iki gihe, ibikoresho bigomba gukama mbere yo kubitunganya.Ubushyuhe bwo gukama ni amasaha 150 4, mubisanzwe 170 3 kugeza 4.Uburyo bwo mu kirere bukoreshwa mu gusuzuma niba ibikoresho byumye rwose.
2. Guhitamo imashini ibumba inshinge
PET ifite akanya gato ko gushonga hamwe no gushonga cyane, birakenewe rero guhitamo sisitemu yo gutera inshinge nini nini yo kugenzura ubushyuhe no kutishyushya gake mugihe cya plastiki, kandi uburemere nyabwo bwibicuruzwa ntibushobora kuba munsi ya 2/3 bya uburemere bwayo.Ingano yo gutera imashini.Hashingiwe kuri ibyo bisabwa, mu myaka yashize, Ramada yashyizeho urukurikirane rwa sisitemu ntoya ya PET idasanzwe.Imbaraga zatoranijwe zifatika zirenze 6300t / m2.
3. Igishushanyo mbonera
PET preforms ikorwa muburyo bushyushye bwo kwiruka.Inkinzo yubushuhe hagati yimashini na mashini yo gutera inshinge nibyiza kuba ifite insimburangingo ya mm 12, kandi ingabo yubushyuhe irashobora kwihanganira umuvuduko mwinshi.Icyambu gisohoka kigomba kuba gihagije kugirango wirinde ubushyuhe bwaho cyangwa gukonjeshwa, ariko ubujyakuzimu bwicyambu gisohoka ntibushobora kurenga mm 0,03, naho ubundi kumurika biroroshye.
4. Gushonga ubushyuhe
Ibipimo birashobora gukorwa nuburyo bwindege.Kuri 270-295 ° C, urwego rwo kuzamura GF-PET rushobora gushyirwaho 290-315 ° C.
5. Umuvuduko wo gutera
Umuvuduko rusange wo gutera inshinge urihuta cyane, urinda gukira hakiri kare.Ariko byihuse cyane, igipimo cyogosha kinini gituma ibintu bivunika.Ubusanzwe popup izarangira mumasegonda 4.
6, igitutu cy'umugongo
Hasi nibyiza, kugirango utambara.Mubisanzwe ntabwo birenze 100bar.
Igihe cyo kohereza: Gashyantare-24-2022