Waba Uzi Kwirinda PET Yitegura?

PET Yiteguye

Munsi yubushyuhe nigitutu runaka, ifumbire yuzuyemo ibikoresho bibisi, kandi mugutunganya imashini ibumba inshinge, itunganyirizwa muri preform ifite uburebure nuburebure runaka bujyanye nububiko. PET ikora isubirwamo no guhindurwa kugirango ibe amacupa ya pulasitike, harimo amacupa akoreshwa mu kwisiga, ubuvuzi, ubuvuzi, ibinyobwa, amazi yubutare, reagent, nibindi.

1. Ibiranga PET Ibikoresho Byibanze
Gukorera mu mucyo ni hejuru ya 90%, ububengerane bwo hejuru ni bwiza, kandi isura ni ibirahure; kugumana impumuro nziza, gukomera kwumwuka nibyiza; imiti irwanya imiti ni nziza, kandi imiti hafi ya yose irwanya aside; umutungo w'isuku ni mwiza; ntizotwika gaze yuburozi ikorwa; imbaraga ziranga ni nziza, kandi ibintu bitandukanye birashobora kurushaho kunozwa no kurambura biaxial.

2. Ubushuhe bwumye
Kuberako PET ifite urwego runaka rwo kwinjiza amazi, izakuramo amazi menshi mugihe cyo gutwara, kubika no gukoresha. Ubushuhe buhebuje buzokwiyongera mugihe c'umusaruro:

- Kongera AA (Acetaldehyde) acetaldehyde.

Ingaruka mbi kumacupa, bikavamo flavours (ariko ingaruka nke kubantu)

- IV (IntrinsicViscosity) igabanuka ryijimye.

Ihindura imbaraga z'icupa kandi byoroshye kumeneka. (Intangiriro iterwa na hydrolytike yangirika ya PET)

Mugihe kimwe, kora ubushyuhe bwo hejuru kugirango PET yinjire mumashini ibumba inshinge zo gukata plastike.

3. Ibisabwa byumye
Kuma ubushyuhe bwashyizweho 165 ℃ -175 ℃

Gutura amasaha 4-6

Ubushyuhe bw'icyambu cyo kugaburira buri hejuru ya 160 ° C.

Ingingo yikime munsi -30 ℃

Umuyaga wumye 3.7m⊃3; / h kuri kg / h

4. Kuma
Ibirungo byiza nyuma yo gukama ni nka: 0.001-0.004%

Kuma cyane birashobora kandi kwiyongera:

- Kongera AA (Acetaldehyde) acetaldehyde

-IV (IntrinsicViscosity) igabanuka ryijimye

(Ahanini biterwa no kwangirika kwa okiside ya PET)

5. Ibintu umunani muburyo bwo gutera inshinge
1). Kujugunya plastiki

Kubera ko PET macromolecules irimo amatsinda ya lipide kandi ifite urugero runaka rwa hydrophilique, pellet zumva amazi kubushyuhe bwinshi. Iyo ubuhehere burenze imipaka, uburemere bwa molekile ya PET buragabanuka mugihe cyo gutunganya, kandi ibicuruzwa bigahinduka ibara kandi byoroshye.
Kubwibyo, mbere yo gutunganya, ibikoresho bigomba gukama, kandi ubushyuhe bwumye ni 150 ° C mumasaha arenze 4; muri rusange 170 ° C mu masaha 3-4. Umwuma wuzuye wibikoresho urashobora kugenzurwa nuburyo bwo kurasa ikirere. Mubisanzwe, igipimo cya PET cyerekana ibikoresho bitunganyirizwa ntigomba kurenga 25%, kandi ibikoresho bitunganyirizwa bigomba gukama neza.

2). Gutera Imashini Gutoranya Imashini

Bitewe nigihe gito gihamye cya PET nyuma yo gushonga hamwe no hejuru yo gushonga, birakenewe guhitamo sisitemu yo gutera inshinge hamwe nibice byinshi bigenzura ubushyuhe hamwe no kubyara ubushyuhe buke bwo kwishishanya mugihe cya plastiki, nuburemere nyabwo bwibicuruzwa (amazi) -ibirimo ibikoresho) ntibigomba kuba munsi yo guterwa imashini. 2/3 by'amafaranga.

3). Igishushanyo mbonera

PET preforms ikorwa mubisanzwe bishyushye biruka. Nibyiza kugira ingabo yubushyuhe hagati yububiko hamwe nicyuma cyerekana imashini. Ubunini bwingabo yubushyuhe bugera kuri 12mm, kandi ingabo yubushyuhe igomba kuba ishobora kwihanganira umuvuduko mwinshi. Umwuka ugomba kuba uhagije kugirango wirinde ubushyuhe bwaho cyangwa gucikamo ibice, ariko ubujyakuzimu bwicyambu gisohoka ntigishobora kurenga 0.03mm, bitabaye ibyo gucana bizaba byoroshye.

4). Gushonga Ubushyuhe

Irashobora gupimwa nuburyo bwo gutera ikirere, kuva kuri 270-295 ° C, kandi urwego rwongerewe GF-PET rushobora gushyirwaho kuri 290-315 ° C, nibindi.

5). Umuvuduko wo gutera inshinge

Mubisanzwe, umuvuduko wo gutera inshinge ugomba kwihuta kugirango wirinde kwandura imburagihe mugihe cyo gutera inshinge. Ariko byihuse cyane, igipimo cyogosha ni kinini, bigatuma ibintu bivunika. Gutera inshinge mubisanzwe bikorwa mumasegonda 4.

6). Umuvuduko w'inyuma

Hasi nibyiza kugirango wirinde kwambara. Mubisanzwe ntabwo birenze 100bar, mubisanzwe ntabwo ukeneye gukoresha.
7). Igihe cyo gutura

Ntugakoreshe umwanya muremure kugirango wirinde kugabanuka kwibiro bya molekile, kandi ugerageze kwirinda ubushyuhe buri hejuru ya 300 ° C. Niba imashini ifunzwe mu gihe kitarenze iminota 15, igomba gusa kuvurwa no gutera umwuka; niba irenze iminota 15, igomba guhanagurwa hamwe na viscosity PE, kandi ubushyuhe bwikigero cyimashini bugomba kumanuka kugeza kubushyuhe bwa PE kugeza bwongeye gufungura.
8). Kwirinda

Ibikoresho bisubirwamo ntibigomba kuba binini cyane, bitabaye ibyo, biroroshye gutera "ikiraro" ahantu haciwe kandi bigira ingaruka kuri plastike; niba ubushyuhe bwubushyuhe butagaragaye neza, cyangwa ubushyuhe bwibintu ntibugenzurwa neza, biroroshye kubyara "igihu cyera" na opaque; ubushyuhe bwubushyuhe buri hasi kandi buringaniye, Umuvuduko wo gukonjesha urihuta, korohereza ibintu ni bike, kandi nibicuruzwa biragaragara.