PET zaj duab xis - yog dab tsi? Nqe lus piav qhia, hom, yam ntxwv, daim ntawv thov

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov khoom siv polymer dav tshaj plaws yog cov khoom siv polyethylene terephthalate (PET). Cov ntaub ntawv ntawm pab pawg no muaj ntau qhov zoo thiab cov khoom tshwj xeeb uas txiav txim siab qhov kev thov hauv ntau yam kev lag luam. Hauv ntu no, PET zaj duab xis yog tshwj xeeb tshaj yog nrov. Nws yog dab tsi? Qhov no yog ib daim ntawv ntawm cov ntaub ntawv nyias nyias uas tuaj yeem ua tau ntau yam haujlwm.

Raw material base

Zaj duab xis yog tsim los ntawm cov thermoplastic polymer hauv daim ntawv ntawm polyethylene terephthalate, uas yog tus cwj pwm los ntawm kev muaj zog, pob tshab thiab yas. Nyob ntawm cov txheej txheem tsim khoom tshwj xeeb, cov khoom lag luam kuj tseem tuaj yeem muab cov tshuaj tiv thaiv zoo dua qub thiab txawm tias muaj peev xwm tiv taus qhov kub thiab txias. Piv txwv li, PET preforms tuaj yeem tiv taus -40 txog 75 ° C ntawm qhov nruab nrab.

Thaum lub sijhawm tsim khoom ntawm PET zaj duab xis, cov khoom siv polymer yog siv rau hauv daim ntawv ntawm cov hluavtaws fiber ntau. Hais lus ntxhib, qhov no yog cov yas zoo li plasticine, los ntawm cov khoom siv (los ntawm kev ntxhib los mos) tuaj yeem tau los ntawm extrusion nyob rau hauv siab. Cov khoom yog cia li nyem tawm ntawm ib tug tshwj xeeb apparatus, tom qab uas nws yog txias thiab, yog hais tias tsim nyog, thauj mus rau ntxiv molding txheej txheem. Nyob rau tib lub sij hawm, ntau yam fillers, dyes thiab lwm yam additives tuaj yeem nkag mus rau hauv cov khoom lag luam yeeb yaj kiab yav tom ntej, uas muaj kev txhim kho zoo ib yam ntawm tus kheej.

khoom kev ua tau zoo

Yeej, cov khoom lag luam tau txiav txim siab los ntawm cov txheej txheem ntawm cov khoom siv raw, tab sis, raws li twb tau hais lawm, polyethylene terephthalate tuaj yeem hloov kho thaum tsim khoom. Nyob rau hauv nws daim ntawv ntshiab, PET zaj duab xis yog pob tshab, amorphous, tshav kub-resistant thiab environmentally friendly. Txawm li cas los xij, hauv cov ntawv tshwj xeeb, cov yam ntxwv hauv qab no tuaj yeem txhim kho:

• Refractoriness - ua tsaug rau kev suav nrog cov nplaim hluav taws.
• Mechanical zog - ua tiav los ntawm kev ntxiv dag zog rau cov saw hlau polymer, uas ua rau kom muaj peev xwm ntawm crystallization.
• Raising lub melting point thiab reinforcing nyob rau hauv cov qauv yog cov nyhuv ntawm kev ntxiv ib pawg phenylene.
• Anti-stick.
• High adhesive zog.

Cov ntsiab lus tseem ceeb

Cov khoom lag luam polymer tiav tseem nyob rau theem ntawm kev tsim thev naus laus zisyog xam rau tej yam loads, uas tag nrho siv rau PET zaj duab xis. Nws yog dab tsi ntawm cov yam ntxwv tshwj xeeb? Niaj hnub no tsis muaj ib qho qauv uas yuav tswj hwm cov qauv ntawm kev ua haujlwm ntawm cov khoom no, tab sis qhov nruab nrab tsis tuaj yeem sawv cev raws li hauv qab no:

• Roll dav - mus txog 900 mm.
• Lub thickness ntawm cov menyuam yog li 10 hli.
• Zaj duab xis thickness - los ntawm 125 txog 175 microns.
• Density – 1.4 g/cm3.
• Ua haujlwm kub ntau - los ntawm -70 txog 150 ° C.
• Shrinkage coefficient - txog 3%.

Kev sib xyaw ua ke, cov yam ntxwv no nrog cov dielectric, dej-tiv taus thiab kub-resistant qualities txiav txim siab lub neej kev pab cuam, uas muaj peev xwm tshaj 10 xyoo.

Ntau yam ntawm PET zaj duab xis

Ntau cov khoom siv yeeb yaj kiab yog tsim los ntawm polyethylene terephthalate, uas txawv tsis yog hauv cov khoom tshwj xeeb, tab sis kuj nyob rau hauv lawv cov qauv. Raws li lub hauv paus no, suav nrog qhov tshwj xeeb ntawm daim ntawv thov, cov khoom hauv qab no tuaj yeem paub qhov txawv:

• Ntim zaj duab xis. Qhov yooj yim ntu nyob rau hauv uas multilayer zaj duab xis coatings-laminates tau xub pib. Niaj hnub no, cov khoom siv no yog siv los ua cov kaus mom rau ntau yam khoom noj, tshuaj hauv tsev, pub, thiab lwm yam.
• Pib zaj duab xis. Ib hom khoom siv nruj dua hauv kev tsim kho, uas yog siv rau sab nrauv lamination. Tib pawg suav nrog PET zaj duab xis hauv cov ntawv, uas npog ntau yam luam ntawvcov khoom los tiv thaiv kev puas tsuaj.
• Insulating zaj duab xis. Kev hloov kho tshwj xeeb ntawm PET txheej txheej tsim los tiv thaiv hluav taws xob ntawm cov tshuab hluav taws xob thiab cov khoom siv yam tsis muaj kev txo qis ntawm lawv txoj haujlwm. Qee cov qauv ntawm zaj duab xis no yog siv rau cable sheathing.
• Metallized film. Hais txog kev tsim kho kev lag luam thiab yog lub hauv paus nyias polymer, nyob rau saum npoo ntawm cov khoom ntawm cov nyiaj, kub, npib tsib xee lossis chromium yog txau. Xws li PET zaj duab xis kuj tseem siv rau ntawm qhov rais hlau-yas. Hauv kev ua lag luam, cov khoom zoo li no hu ua cov yeeb yaj kiab txuag hluav taws xob.

PET zaj duab xis thov

Lub hom phiaj tseem ceeb ntawm cov khoom siv yog txuam nrog kev tsim cov thawv rau ntau yam khoom los ntawm lub raj mis me mus rau cov khoom siv loj. Hauv lub peev xwm no, zaj duab xis yog siv ob qho tib si hauv kev lag luam thiab hauv lub neej txhua hnub. Cov qauv hauv hom triplex yog dav siv rau ntim aseptic thiab cov khoom kub nrog kub txog 100 ° C. Hauv qee qhov chaw, kev xyaum siv cov yeeb yaj kiab zoo li no tau dhau los lawm. Piv txwv li, tsis ntev dhau los, polyethylene terephthalate tau siv los tsim cov xov tooj cua engineering zaj duab xis rau audio thiab video recorder cassettes, tab sis niaj hnub no cov khoom uas muaj cov qauv zoo sib xws tsuas yog siv los ua ib feem ntawm cov tshuab cua txias. Hloov pauv, hauv kev tsim kho kev lag luam muaj kev txaus siab rau cov khoom sib xyaw raws li PET zaj duab xis. Nws yog dab tsi? Cov no yog cov khoom hnyav hnyav hnyav hnab khib nyiab. Kev tsim cov khib nyiab ua rau muaj teeb meem kev tu ntau heev vim muaj kev pheej hmoo ntawm kev txiav thiab punctures. Cov hnab ntim cov pa, yog li txhim khu kev qha thiab siv tau PET ntim yog nyob rau hauv kev thov nce.

Khoom siv rov ua dua

Nws yog technologically nyuaj kom tau txais cov ntaub ntawv thib ob los ntawm polymers, tab sis tsis ntev los no, nrog rau kev tsim cov cuab yeej tshiab rau kev siv cov khoom siv rov ua dua tshiab, cov txheej txheem rov ua dua tau yooj yim dua. Los ntawm txoj kev, polyethylene terephthalate PET zaj duab xis yog suav tias yog ib qho ntawm cov khoom siv polymeric yooj yim tshaj plaws nyob rau hauv cov nqe lus ntawm kev ua tau zoo, vim nws tsis tas yuav tshwj xeeb crushing thiab crumbling, ib yam li cov ntaub ntawv nrog PET fwj, piv txwv li. Lwm qhov yog tias cov ntaub ntawv ua yeeb yaj kiab ua rau muaj teeb meem ntau dua ntawm cov theem ntawm kev sib dhos, sib cais thiab faib.

Zaj lus

Cov khoom siv zaj duab xis raws li polyethylene terephthalate hnub no yog ib qho khoom siv tseem ceeb uas tau siv dav hauv kev lag luam rau ntau lub hom phiaj. Txawm hais tias muaj cov analogues los ntawm lwm cov khoom siv hluavtaws, nws yog PET zaj duab xis uas yeej tsis muaj kev sib tw hauv nws lub niche ntawm cov khoom ntim vim muaj kev sib xyaw ua ke ntawm kev ua tau zoo. Nws yog dab tsi hauv kev xyaum? Dab tsi tsim nyog rau cov neeg siv khoom ntseeg siab ntawm cov khoom no? Txawm hais tias peb tsis xav txog cov yam ntxwv ntawm kev ua haujlwm thiab kev tiv thaiv nrog kev ua haujlwm ntev, qhov txiaj ntsig tseem ceeb ntawm PET zaj duab xis yog nws cov phooj ywg ib puag ncig. Nws yog qhov tseem ceeb no uas tso cai rau kev siv cov khoom siv no hauv kev lag luam zaub mov hauv ntim loj.