Ntau cov yeeb yaj kiab feem ntau yog siv hauv lub neej txhua hnub. Cov ntaub ntawv dab tsi yog cov yeeb yaj kiab no ua los ntawm? Dab tsi yog qhov kev ua tau zoo ntawm txhua tus? Cov hauv qab no yog cov ncauj lus kom ntxaws txog cov yas yeeb yaj kiab uas feem ntau siv hauv lub neej txhua hnub:
Yas zaj duab xis yog ib zaj duab xis ua los ntawm polyvinyl chloride, polyethylene, polypropylene, polystyrene thiab lwm yam resins, feem ntau siv rau hauv ntim, kev tsim kho, thiab ua txheej txheej, thiab lwm yam.
Yas zaj duab xis tuaj yeem muab faib ua
-Industrial zaj duab xis: tshuab tshuab, calendered zaj duab xis, stretched zaj duab xis, cam khwb cia zaj duab xis, thiab lwm yam .;
- Agricultural shed film, mulch film, thiab lwm yam.;
-Cov yeeb yaj kiab rau kev ntim khoom (nrog rau cov yeeb yaj kiab sib xyaw rau kev ntim tshuaj, cov yeeb yaj kiab sib xyaw rau ntim khoom noj, thiab lwm yam).
Qhov zoo thiab qhov tsis zoo ntawm cov yeeb yaj kiab yas:
Cov yam ntxwv ua tau zoo ntawm cov yeeb yaj kiab yas tseem ceeb:
Biaxially Oriented Polypropylene Zaj duab xis (BOPP)
Polypropylene yog ib qho thermoplastic cob ua los ntawm polymerization ntawm propylene. Copolymer PP cov ntaub ntawv muaj qhov kub thiab txias distortion (100 ° C), tsis muaj pob tshab, tsis tshua muaj gloss, thiab tsis tshua muaj rigidity, tab sis muaj zog cuam tshuam lub zog, thiab qhov cuam tshuam lub zog ntawm PP nce nrog cov ntsiab lus ethylene. Vicat softening kub ntawm PP yog 150 ° C. Vim muaj cov qib siab ntawm crystallinity, cov khoom siv no muaj qhov tawv tawv zoo heev thiab khawb tsis kam. PP tsis muaj teeb meem kev ntxhov siab ib puag ncig.
Biaxially oriented polypropylene zaj duab xis (BOPP) yog pob tshab ntim khoom siv tau tsim nyob rau xyoo 1960. Nws siv cov kab tshwj xeeb tsim los sib xyaw cov khoom siv polypropylene thiab cov khoom siv ntxiv, yaj thiab knead rau hauv cov ntawv, thiab tom qab ntawd ncab lawv mus rau hauv cov yeeb yaj kiab. Nws yog dav siv hauv ntim khoom noj, khoom qab zib, luam yeeb, tshuaj yej, kua txiv, mis nyuj, textiles, thiab lwm yam, thiab muaj lub koob npe nrov ntawm "Packaging Queen". Tsis tas li ntawd, nws tseem tuaj yeem siv rau kev npaj cov khoom muaj txiaj ntsig zoo ntxiv xws li cov khoom siv hluav taws xob thiab cov microporous membranes, yog li txoj kev loj hlob ntawm BOPP films yog dav heev.
BOPP zaj yeeb yaj kiab tsis yog muaj qhov zoo ntawm qhov ceev, zoo corrosity, tab sis kuj muaj lub zog kho qhov muag zoo, muaj zog dua thiab muaj txiaj ntsig ntawm cov khoom nyoos. BOPP zaj duab xis tuaj yeem ua ke nrog lwm cov ntaub ntawv nrog cov khoom tshwj xeeb los txhim kho ntxiv lossis txhim kho kev ua haujlwm. Cov khoom siv feem ntau muaj xws li PE zaj duab xis, salivating polypropylene (CPP), polyvinylidene chloride (PVDC), txhuas zaj duab xis, thiab lwm yam.
Low Density Polyethylene Zaj duab xis (LDPE)
Polyethylene zaj duab xis, uas yog PE, muaj cov yam ntxwv ntawm noo noo tsis kam thiab tsis muaj noo noo permeability.
Tsawg-density polyethylene (LPDE) yog cov khoom siv hluavtaws tau los ntawm ethylene radical polymerization nyob rau hauv siab, yog li nws tseem hu ua "high-pressure polyethylene". LPDE yog ib tug branched molecule nrog ceg ntawm ntev ntev ntawm lub ntsiab saw, nrog txog 15 mus rau 30 ethyl, butyl los yog ntev ceg ntawm ib 1000 carbon atoms nyob rau hauv lub ntsiab saw. Vim tias cov molecular chains muaj cov saw ntev dua thiab luv luv, cov khoom siv hluav taws xob tsawg, tshwj xeeb cov kua qaub ruaj khov, zoo li muaj zog oxidizing acids), alkali, ntsev, muaj qhov zoo hluav taws xob rwb thaiv tsev zog. Translucent thiab glossy, nws muaj tshuaj lom neeg ruaj khov zoo heev, kub sealability, dej tsis kam thiab noo noo tsis kam, khov tsis kam, thiab tuaj yeem boiled. Nws qhov tsis zoo yog qhov tsis zoo rau cov pa oxygen.
Nws feem ntau yog siv los ua cov yeeb yaj kiab sab hauv ntawm cov khoom ntim cov khoom sib xyaw ua ke, thiab nws tseem yog cov khoom siv ntau tshaj plaws thiab siv cov yas ntim zaj duab xis tam sim no, suav txog ntau dua 40% ntawm kev noj cov yas ntim zaj duab xis. Muaj ntau hom polyethylene ntim zaj duab xis, thiab lawv cov kev ua yeeb yam kuj txawv. Kev ua yeeb yam ntawm ib txheej zaj duab xis yog ib leeg, thiab kev ua yeeb yam ntawm cov yeeb yaj kiab sib xyaw yog ua tiav. Nws yog cov khoom tseem ceeb ntawm kev ntim khoom noj. Thib ob, polyethylene zaj duab xis kuj tseem siv rau hauv kev tsim vaj tsev engineering, xws li geomembrane. Nws ua raws li cov dej tsis zoo hauv engineering engineering thiab muaj tsawg permeability. Agricultural zaj duab xis yog siv rau hauv kev ua liaj ua teb, uas tuaj yeem muab faib ua zaj duab xis, mulch zaj duab xis, iab cover zaj duab xis, ntsuab cia zaj duab xis thiab lwm yam.
Polyester zaj duab xis (PET)
Polyester zaj duab xis (PET), feem ntau hu ua polyethylene terephthalate, yog thermoplastic engineering yas. Nws yog cov khoom siv zaj duab xis ua los ntawm cov ntawv tuab los ntawm extrusion thiab tom qab ntawd biaxially stretched. Polyester zaj duab xis yog tus cwj pwm los ntawm cov khoom siv zoo heev, siab rigidity, hardness thiab toughness, puncture kuj, kev sib txhuam tsis kam, kub thiab kub tsis kam, tshuaj tsis kam, roj tsis kam, huab cua nruj thiab tshuaj tsw qab. Ib qho ntawm cov yeeb yaj kiab sib txuas mus tas li, tab sis kev tiv thaiv corona tsis zoo.
Tus nqi ntawm polyester zaj duab xis yog qhov siab, thiab nws cov thickness feem ntau yog 0.12 hli. Nws feem ntau yog siv los ua cov khoom siv sab nrauv ntawm cov khoom noj rau kev ntim khoom, thiab muaj kev luam tawm zoo. Tsis tas li ntawd, polyester zaj duab xis feem ntau yog siv los luam thiab ntim cov khoom siv xws li ib puag ncig tiv thaiv zaj duab xis, PET zaj duab xis, thiab cov yeeb yaj kiab dawb, thiab siv dav hauv kev lag luam xws li iav fiber reinforced plastics, cov ntaub ntawv hauv tsev, luam ntawv, thiab tshuaj thiab kev noj qab haus huv.
Nylon yas zaj duab xis (ONY)
Lub npe tshuaj ntawm nylon yog polyamide (PA). Tam sim no, muaj ntau yam nylon industrially tsim, thiab ntau yam tseem ceeb uas siv los tsim cov yeeb yaj kiab yog nylon 6, nylon 12, nylon 66, thiab lwm yam. Nylon zaj duab xis yog ib zaj duab xis tawv heev nrog pob tshab, zoo gloss, siab tensile zog thiab tensile lub zog, thiab zoo kub tsis kam, txias tsis kam, roj kuj thiab organic hnyav kuj. Kev hnav zoo heev thiab puncture kuj, kuj mos, zoo heev oxygen barrier zog, tab sis tsis zoo barrier zog rau dej vapor, siab noo noo nqus thiab noo permeability, tsis zoo tshav kub salability, haum rau ntim cov khoom nyuaj, xws li greasy zaub mov, khoom noj nqaij, kib. khoom noj khoom haus, khoom noj khoom haus ntim khoom, khoom noj steamed, thiab lwm yam.
Cast Polypropylene Zaj duab xis (CPP)
Tsis zoo li cov txheej txheem biaxially oriented polypropylene zaj duab xis (BOPP), cam khwb cia polypropylene zaj duab xis (CPP) yog ib qho uas tsis yog-stretched, non-oriented ca extrusion zaj duab xis uas tsim los ntawm yaj casting thiab quenching. Nws yog tus cwj pwm los ntawm kev ceev ceev ceev, siab tso zis ntau lawm, zoo zaj duab xis transparency, gloss, thickness uniformity, thiab zoo heev tshuav nyiaj li cas ntawm ntau yam khoom. Vim tias nws yog zaj duab xis extruded tiaj tus, kev ua haujlwm tom qab xws li luam ntawv thiab kev sib xyaw ua ke yog qhov yooj yim heev. CPP yog dav siv nyob rau hauv ntim ntawm textiles, paj, zaub mov, thiab cov khoom siv niaj hnub.
Aluminium-coated yas zaj duab xis
Cov yeeb yaj kiab aluminized muaj ob qho tib si ntawm cov yeeb yaj kiab yas thiab cov yam ntxwv ntawm cov hlau. Lub luag hauj lwm ntawm txhuas plating rau saum npoo ntawm zaj duab xis yog los tiv thaiv lub teeb thiab tiv thaiv ultraviolet hluav taws xob, uas tsis tsuas yog ncua lub txee lub neej ntawm cov ntsiab lus, tab sis kuj txhim kho qhov ci ntawm zaj duab xis. Yog li ntawd, aluminized zaj duab xis yog dav siv nyob rau hauv composite ntim, feem ntau yog siv nyob rau hauv qhuav thiab puffed zaub mov ntim xws li biscuits, raws li zoo raws li lub txheej ntim ntawm ib co tshuaj thiab tshuaj pleev ib ce.
Post lub sij hawm: Lub Xya hli ntuj-19-2023
