Ndeupi musiyano pakati pechipfu uye petg?

Pet, polycondensate, inoshandiswa zvakanyanya munzvimbo dzekudya dzekudya uye machira emhando, pakati pezvimwe zvinoshandiswa. Izvo zvino zvinowedzera kushandiswa sechinhu chekutakura, kwete mumabhodhoro eSoda chete, asiwo muAmorphous Pet (Apet), Crystalline pet (cepet) makani nemahwendefa. Mumakore mashanu apfuura, engineering-giredhi peturu uye coplyesters
Kubudirira kwechipfuwo cheSoda kurongedza kuri nekuda kwekunetseka kwayo uye kujeka, mhandara yekukoshesa, kukosha kwehupfumi kwakanakisa, uye kukura kwehunyanzvi hwekumhanya-mhanya tekinoroji. PET chinomengetema matani akareruka, anotsemuka, anosvibiswa, uye ave neyakanaka. Iyo yakazadzwa 2-liter pething bireketi bhodhoro rine 24% yakareruka kupfuura imwe chete yegirazi bhodhoro; Hombodo isina chinhu inorema 1/10 yegirazi regirazi reiyo yakaenzana. Izvi zvinoponesa basa, simba, uye mutengo mune zvese zvinongedzo kubva kumugadziri kune mutengi.
Chemistry uye zvivakwa

Pet yekuchera mabhodhoro inogadzirwa kubva kuTerephthaal acid (TPA) yakawanikwa ne oxidation yeP-xylene. Terephthaal acid inocheneswa kana yakaitwa ne methanol kuumba dimethyl terephthalate (DMT), kana kupfuurira oxidized yekuumba terephthalic acid (PTA). Chimwe chinhu chakakosha chechigadzirwa chechipfu chechipfu chechipfu, icho chinoshandurwa kuva ethylene glycol (semuenzaniso) nekuita. PET ICHIRI PELYMER YEMAHARA YAKAITWA POLYMEZUZO yeDMT (kana PTA) uye eg in the Molten State, uyezve Solid-State Polymerization Procstals uye Yekupedzisira Mhezi Kurema uye Intrinsic viscosity. Maitiro akasimba-epasi anogadzirawo ethanol zviri mukati mePolymer akapfuurisa.

General Commerce Pet Resin Inonyunguduka

Yakatenderwa crystallized pet ine simba rakanaka kwazvo. Kunyanya kuoma uye kuoma, uye kupokana kune isina kusimba acids, zvigadziko uye zvakawanda sol.

Anosarudzika mamakisi

Tambanudza maruva anoumba giredhi peturu inogona kupa ruvara rwakasimba, yakasvibira uye yakajeka yellow yellow pet. Polymer ine ruvara mune yekunetseka haidi kuumbwa nemhedzisiro yakaipa pane zvivakwa zvemuviri, uye zvinovandudza kufanana kwemavara. Nzvimbo dzakacheneswa dzakasarudzika dzezvikamu zvakasiyana siyana zviripo zviripo. Pet Copolymers crystallize zvishoma nezvishoma, inovatendera kuti vagadzire yakakwirira-mhando yemabhuku eSoda pamusoro pehuremu hwakawanda hwekugadzirisa. Kuunganidza kwekutora kunoumbwa polymer kunowanikwawo. Izvi zvinyorwa zvinosanganisira zvakanakira chinyungudika simba uye chinonamira chivharo, uye chinogona kugadzirwa nyore nyore pane yakakodzera yekuwedzera kuburitsa kuumbwa michina. Yakasarudzika yakasimbiswa, murazvo unodzoreredza uye mamwe maPolyty Polyty anogara achiunzwa kana kushandurwa kuti asangane nezvitsva zvekushandisa.

PetgCoplyter muenzaniso mumwe muenzaniso wehuwandu hukuru hwevakabatana. Kusiyana nePCTA, iyo inoshandurwa neAcid, petg is a diol-yakagadziridzwa polymer yakagadzirwa nekubatanidza CHDM DIOL neTPA (terephthalic acid) uye etheryne glycol. Petg Copolymers anogona kuumbwa kana kuendesa uye kazhinji osara amorphous, pachena uye asina ruvara, kunyangwe muzvikamu zvikuru zvechikamu.

Iyo ine kuomarara kwakanyanya, kuomarara uye kuomarara kwakanaka, kunyangwe kupisa kwakadzika. Iko kusanganiswa kwePaturnency, kuomarara uye kunyungudutsa simba kunoita kuti ibatsire jekiseni kuumbwa, kuridza kuumbwa uye kuumbwa kwemapepa, mapaipi, mafirimu nemashiti. PETG inowanikwa mune isina kujairika fomu kana nevakawanda vanowedzera, kusanganisira kuburitsa vamiririri, mastergatches, uye kukanganisa modifiers ku jekiseni kuumba.

Petg anofanirwa kuomeswa pa120-16060F kweanenge maawa 4-6 vasati vaumbwa kana kuumbwa. Mune ese maviri maitiro, iyo yekunyungudika tembiricha kubva pa420f kusvika ku510F. Iyo nguva yekubata yekugadzirisa michina pakudziya kwakakwirira kunofanirwa kuve pfupi sezvinobvira kudzivirira kunyanyisa kusvibiswa. Kuumbwa kwejongwe kunofanirwa kuitwa pane jekiseni mold

Petg inogona kuongororwa uye kurova nekuumbwa nekunyungudika tembiricha pakati pe400-450F kugadzira mabhodhoro eShampoo. Izvi zvinyorwa zvinosangana neFDA zviyero zvekusangana nechikafu.

Kuwedzeredza kunogona kuburitsa huwandu hwakawanda hwekushandisa, pamwe nekuporesa machubhu, mafirimu, uye mashitsi, kusanganisira zvekurapa zvekurapa pakurapa. Petg uye PCTA inogona kusungwa neEndlyne oxide uye y rangi.

Kana ichishandiswa jekiseni kuumbwa, petg inowanzo kugadziriswa pakunyungudika tembiricha ye450-50F, ine chimedu chemuchato che70-130F. Zviripo zviripo zvinosanganisira chiridzwa chivharo, machina nhillion, cosmetic midziyo, lever mudziyo midziyo, zviratidziro uye matoyi.

Pet inonyanya kushandiswa mune soda uye zvinwiwa zvinwiwa zvinwiwa. PET

Pet inoshandiswa pakudya, doro, magetsi. Kuda kwePet kunotarisirwa kuenderera mberi nekukura kwezvinwiwa zvisina kugadzirwa uye maindasitiri echigadzirwa. Zvikafu zvakarongedzwa zvinosanganisira masitadhi, zvigadzirwa zvebabha, peanut butter, comments, yekubika mafuta, cocktails uye yakaiswa muto. Mavara matsva, kunyanya weber mavara, anozivikanwa mumifananidzo yemishonga, mavitamini uye anodzora.

Imwe yeiyo nyowani yekuwedzera uye inokurumidza kukura michina yemidziyo yezvipfuyo chikafu kana chinwiwa chakaputirwa, chinoda kuzadza tembiricha yakanyanya. Zvekudya zvakawanda, kunyanya michero kana chikafu kana chinwiwa chine michero yakakwira, inofanira kunge yakarongedzwa pa 180f kana kupfuura. Izvi zvinopa pasteurization (sterilization) yechigadzirwa uye mudziyo panguva yekuzadza. Zvidimbu zvakajairika zvakateedzerwa, senge mabhegi eSoda uye zvinwiwa zvinyoro-nyoro, zvinowanzo tenderera uye deferiford kana uchiiswa pasi pemhepo pamusoro pegumi neshanu, iyo inokonzerwa nekuzorora kwekushushikana. Kushushikana kushushikana kunogadzirwa panguva yekutambanudzwa kurova kuumbwa kwemudziyo. Tekinoroji yakagadzirwa kuti uvandudze kupisa kupokana panguva yekugadzirisa, kazhinji inotaurwa nezve "kupisa tekinoroji. Zvichienderana nehunyanzvi hwekugadzirisa tekinoroji, pane akati wandei matekinoroji ehunyanzvi, ayo ari kurondedzerwa zvakanyanya, zvichienderana nemidziyo iyo yakakodzera kuzadza pa190-195F inogona kugadzirwa. Zvigadzirwa zvinoda kurongedza nehunhu uhu hunosanganisira zvibereko zvakachena zvibereko. Nzvimbo dzakakwirira-jusi

Mamwe magumo anoshandiswa peturu anoshandiswa zvakanyanya mukuwedzera kuunganidza uye kuunganidzwa firimu uye pepa. Pet inoshandiswa seinowedzera kuunganidza zvinyorwa zvezvakashata mapepa emapepa. Mukuwedzera, Crystalline pet (cepet) inogona kushandiswa seyakanakisa zvinhu zvekuita oven trays.

Firimu remhuka rinowanzo kuve rakarukwa uye rinoshandiswa seX-ray uye mamwe mafirimu emapikicha, mashura ekuputika, magetsi ekutakura, ekudhinda mahwendefa uye mabhodhoro ekutakura mabhegi. Pet inoshandiswawo seyunivhesiti tepi. Isiri-Crystalline, isina kujairika peturu firimu uye pepa iri kutanga kushandiswa kuti dzigadzire midziyo, mateya, zvigadzirwa zvehunhu uye zvinwiwa zvinwiwa.

Pfupiso: Petg ishandudzeri yakasimudzirwa yechipfu, nekujeka kwepamusoro, kukwirira kwakanyanya, kukanganisa kukanganisa, uye zvechokwadi mutengo wakakwira.