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Cov polyethylene (PE) resins yog cov thermoplastic polymers uas txhais tau tias lawv tuaj yeem tsim los ntawm cua sov thiab rov yaj yam tsis poob lawv cov yam ntxwv. Thermoplastics txawv ntawm thermosets, uas hloov pauv mus tas li tom qab tawv.
Cov polyethylene resins raug muab faib ua peb pawg loj: qhov ceev tsawg (LDPE), qhov ceev siab (HDPE), thiab qhov hnyav molecular siab heev (UHMW-PE). LDPE siv rau kev ua cov hnab yas yuav khoom, piv txwv li; HDPE, rau cov kav dej ntws; thiab, UHMW-PE rau cov khoom siv kho mob. Feem ntau, qhov ceev ntawm cov khoom ntau dua, nws cov qauv crystalline ntau dua. Cov qauv crystalline siab dua muaj qhov kub siab dua.
LDPE piav qhia zoo tshaj plaws tias muaj zog tsawg tab sis ductile heev yog li nws thiaj li ncab tau yam tsis tawg. Nws nrov rau ntau yam kev siv ntim khoom los ntawm lub raj mis nias mus rau zaj duab xis kaw. HDPE muaj zog dua tab sis qis dua ductility, ua rau nws muaj txiaj ntsig zoo rau cov khoom uas yuav tsum khaws lawv cov duab xws li cov thoob khib nyiab. HDPE tseem siv tau ntawm -60 ° C. UHMW-PE muaj zog heev, nrog rau qhov sib piv ntawm lub zog rau qhov hnyav ze li ntawm qee cov hlau. Muaj kev tiv thaiv siab rau kev puas tsuaj, nws tsim nyog rau cov ntawv thov tshwj xeeb xws li lub sijhawm ntsia hlau thiab lub log ntawm cov tshuab fwj, cov ntaub qhwv ntawm cov pob qij txha dag, thiab lwm yam.
Ib yam li ntau cov thermoplastics, polyethylene resins yooj yim nqus cov dej noo. Lawv feem ntau tsis xav tau cov txheej txheem ziab tshwj xeeb ua ntej txhaj tshuaj molding lossis lwm yam kev ua.
Cov khoom siv hauv nws daim ntawv ntuj feem ntau yog dawb lossis dub thiab ua pob tshab thaum nyias mus rau qhov loj ntawm lub raj mis mis thiab lwm yam. Cov neeg muag khoom tuaj yeem hloov kho cov mis kom ua rau lub zog rhuav, pob tshab, yooj yim tsim, luam tawm tau, thiab lwm yam, raws li qhov xav tau kom haum rau daim ntawv thov ntawm tes.
| Kev tsom xam qhov project | Daim Ntawv Qhia Tau Zoo | Cov txiaj ntsig sim | Txoj kev sim |
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Cov tsos ntawm cov khoom me me Cov noob xim thiab cov noob dub/k |
≤10 | 0 | SH/T 1541.1-2019 |
| loj thiab me, g/kg | ≤100 | 0 | SH/T 1541.1-2019 |
| Tus nqi ntws ntawm cov khoom yaj (21.6kg), g / 10 feeb | 4.8-7.2 | 6.1 | Q/SY DS 0511 |
| Qhov Ceev, kg/m3 | 946-950 | 948.9 | Q/SY DS 0510 |
| Kev ntxhov siab ntawm cov zis, MPa | ≥22 | 24.9 | Q/SY DS 0512 |
| Kev ntxhov siab tensile thaum tawg, MPa | ≥24 | 42.2 | Q/SY DS 0512 |
| Tensile zog thaum tawg,% | ≥450 | 775 | Q/SY DS 0512 |
Polyethylene tuaj yeem ua tiav los ntawm kev tshuab moulding, extrusion, txhaj tshuaj molding thiab lwm txoj kev, siv dav hauv kev tsim cov zaj duab xis nyias, cov khoom khoob, cov fibers thiab cov khoom siv niaj hnub. Thiab lwm yam.
(1) Polyethylene (PE) zaj duab xis yog siv dav ua cov khoom ntim rau ntau yam khoom noj, tshuaj, tshuaj chiv, khoom lag luam thiab zaj duab xis ua liaj ua teb. Nws kuj tseem tuaj yeem raug extruded rau hauv zaj duab xis sib xyaw rau kev ntim cov khoom hnyav.
(2) cov khoom polyethylene hollow: lub zog polyethylene siab dua, tsim nyog rau cov khoom hollow. Nws tuaj yeem raug tshuab rau hauv lub raj mis, cov thoob, cov kaus poom, cov thoob thiab lwm yam thawv. Los yog los ntawm kev pov rau hauv lub tank thiab lub tank cia thiab lwm yam thawv loj.
(3) cov yeeb nkab polyethylene thiab phaj yog tsim rau kev tso hauv av, rooj thiab cov ntaub ntawv tsim kho
(4) polyethylene fiber: siv tau ua lub tsho tiv thaiv mos txwv. Cov ntaub ntawv sib xyaw rau kev ua haujlwm hauv tsheb thiab Marine.
(5) polyethylene fiber los ua cov xov paj rwb bristle, cov xov paj rwb tiaj tiaj lossis cov yeeb yaj kiab fiber, siv los ua hlua, ntaub lim dej, ntaub ntim khoom thiab lwm yam.
(6) Polyethylene sib xyaw ua ke: Cov khoom sib xyaw ua ke uas tsim los ntawm kev txhaj tshuaj molding suav nrog cov khoom sib xyaw ua ke txhua hnub, paj dag, lub thawv tig rov qab, cov thawv me me, cov khoom siv tsheb kauj vab thiab tsheb laij teb, uas yog siv rau hauv kev tsim cov khoom siv.
Cov ntim khoom yog nyob rau hauv 25kg hnab yas, uas tuaj yeem thauj los ntawm kev tsheb ciav hlau lossis hiav txwv thiab khaws cia rau hauv lub tsev rau khoom qhuav.
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