Pet (Polyethylene terephthalate)
Kuomesa uye kuchema pamberi pekusvika jekiseni kuumbwa
Inofanira kuomeswa usati waumbwa. Pet inonyatsoteerera kuHydrolysis. Iyo Commal Air Heating-yakaoma ndeye 120-165 c (248-329 f) kwemaawa mana. Iyo yakanyorova zvemukati inofanira kunge iri pasi pe 0.02%.
Kugamuchirwa Kugadziriswa kweIR system, nguva yekuomesa chete inoda 15mins. Sevha simba rinodhura anenge 45-50%. Zvemukati zvinyoro zvinogona kunge makumi mashanu-70PPM. . Uye iri kugadziriswa nekuomesa & kuchema panguva.
Nyungudika tembiricha
265-280 C (509-536 F) yemakiromita asina kuzere
275-290 C (527-554 f) yegirazi kusimbisa giredhi
Mol Tembiricha
80-120 C (176-248 F); Yakasarudzika Range: 100-110 C (212-230 F)
Kunyora Midziyo Yekumanikidza
30-130 MPA
Inomhanyisa jekiseni
Kumhanya kwakakwirira pasina kubhururuka
Injection Molding Machine:
Kuumbwa kwejekiseni kunonyanya kushandiswa kusimudzira kuumbwa kwechipfu. Kazhinji, chipfuyo chinogona kungoumbwa ne screw jekiseni kuumba muchina.
Zvakanakisa kusarudza iyo mutant screw ine rombo repamusoro pamusoro, iyo ine hombe pamusoro pekushomeka uye kupfeka kurwisa, uye chimiro cheRatio hachisi chinhu che-15 ~ 20): 1 compresming ratio ye3: 1.
Zvigadzirwa zvine hombe l / d gara mugomba kwenguva yakareba kwazvo, uye yakanyanya kupisa inogona kukonzera kusvibiswa uye kukanganisa zvigadzirwa zvechigadzirwa. Kumanikidza kuenderana kwakanyanya kuwanda kuti ubudise kupisa kushoma, kuri nyore kupokana, uye kuita zvisina kunaka. Kune rimwe divi, kuparadzwa kwegwenzi mafaira kuchave kwakawedzera uye maitiro emuchina ezvipfuyo zvehuni zvichadzikiswa. Kana iyo yegirazi fiber yakasimbiswa peth inosimbiswa, madziro emukati webharari akapfekwa zvakanyanya, uye mbiya yakagadzirwa neyepfeka zvinhu zvinopesana kana zvakamanikidzwa neakapfeka zvakapfeka zvinhu zvinopesana.
Sezvo ruzha ipfupi, madziro emukati anofanirwa kuve pasi uye kuparadzwa kunofanirwa kuve kwakakura sezvazvinogona. Iyo lzzle yeiyo hydraulic brake valve mhando yakanaka. Iwo ma nozzles aifanira kuve nekupiswa uye tembiricha kudzora matanho ekuona kuti ma nozzles haasunungure uye avharidzi. Nekudaro, tembiricha yemachira haifanire kunge yakanyanya, neimwe nzira ichakonzera kumhanya. Yakadzika yekumanikidza PP zvinyorwa inofanira kushandiswa uye iyo mbiya yakacheneswa usati watanga kuumba.
Iyo huru jekiseni kuumbwa mamiriro echipfu
1, tembiricha yebhari.Iyo inoumbwa tembiricha yechipfuyo yakamanikana, uye tembiricha inokanganisa zvakananga kuita kwechigadzirwa. Kana tembiricha yakanyanya kuderera, haina kunaka kupeta zvikamu zvepurasitiki, dents, uye kushaikwa kwezvinhu zvekuremara; Pane kusapindirana, kana tembiricha yakanyanya, ichakonzera kupaza, mhou dzichayerera, ruvara ruchasviba, simba richaderera, uye kunyange kusvibiswa kuchaitika. Kazhinji, tembiricha yekushambadzira inodzorwa pamakumi maviri nemakumi matatu nemakumi matatu emakore
2, kupisa kwakaumbwa.Iyo inopisa tembiricha yakanangana nehuremu hwekutonhora uye kuchema kwenyungudu, kuchema kwakasiyana, uye zvinhu zvemahara zvikamu zvepurasitiki zvinosiyanawo. Kazhinji, tembiricha yakaumbwa inodzorwa ne100 ° C. Tsika diki dzinokurudzirwa kana dzichigadzira zvikamu zvakatetepa-mapurasitiki. Paunenge uchiumba zvikamu zvakakora mapurasitiki, zvinokurudzirwa kuve nekukosha kukuru.
3. Kumanikidzwa kwejekisi.Iyo pet inoyungudika ndeye fluid uye nyore kuumba. Kazhinji. Dzvinyiriro yezvirevo inofanira kutsanangurwa nekufunga nezve zvevatenzi vepfuti, huwandu hwemubhadharo, nzvimbo uye saizi uye saizi yepurasitiki, tembiricha yemuchina wekuumbwa.
Marii yamunoziva nezve kugadzirwa kwezvipenga zvemapuranga?
1, purasitiki yekugadzirisa
Sezvo peturu macromolecules ine lipid base uye iva neyakahwanda hydrophilicity, izvo zvidimbu zvine hanya nemvura pakupisa kwakanyanya. Kana izvo zvinyoro-nyoro zvinopfuura muganho, uremu hwemumoyo wemhuka dzinodzikira, uye chigadzirwa chakavezwa uye chinova brittle. Mune ino kesi, zvinyorwa zvinofanirwa kuomeswa usati wagadziriswa. Iko kupisa kupisa ndeye maawa gumi nemashanu, kazhinji 170 3 kusvika maawa mana. Iyo mhepo yemhepo nzira inoshandiswa kuyedza kana iyo zvinyorwa zvacho zvakaoma zvachose.
2. Kusarudzwa kweiyo jekiseni kuumba muchina
PET ine nzvimbo pfupi yekunyungudika uye nzvimbo yakanyanya yekunyungudika, saka inodikanwa kusarudza iyo jekiseni system yekudzora tembiricha yekudzora uye kusanzwisisika panguva yePlastics, uye uremu hwechigadzirwa hachiitike pane 2/3 yehuremu hwayo. Huwandu hwemuchina jekiseni. Zvichida pane izvi zvinodiwa, mumakore achangopfuura, Ramada akagadzira nhevedzano yezvidiki uye yepakati-yepakati peturu yakakosha mapurasitiki system. Iyo yakasarudzwa chinongedzo simba yakakura kupfuura 6300t / m2.
3. MOLD uye GEDE Dhizaini
Pe pet Freverms inowanzoumbwa nemumhanyi anopisa mold. Nhoo inopisa pakati peMold uye iyo jekiseni mold Chikwama chakakwanira chinofanira kunge chakakwanira kuti udzivise kufararira kwenzvimbo kana chipping, asi kudzika kweiyo puru yeiyo yekubvisa kazhinji haina kupfuura 0.03 mm, kana zvikasadaro kupenya kuri nyore.
4. Kupisa tembiricha
Kuyerwa kunogona kuitwa neyemhepo jet nzira. Pana 270-295 ° C, mwero wekuwedzera gf-pet anogona kuiswa kusvika 290-315 ° C.
5. Inomhanya jekiseni
Iyo general jekiseni yekumhanya iri kukurumidza kwazvo, iyo inotadzisa kurapa kwekutanga kwejekiseni. Asi nekukurumidza, iyo yakakwira Shear rate inoita kuti zvinyorwa zvive zvipfukuri. Iyo popup inowanzo kuve yakapera mumasekondi mana.
6, kudzvinyirira kumashure
Iyo yakadzika iyo iri nani, kuti usapfeka. Kazhinji hapana anodarika zanabhi.
Kutumira Nguva: Kukadzi-24-2022