Qhov txawv tseem ceeb-UHMW vs HDPE
UHMW thiab HDPE yog cov thermoplastic polymers uas muaj qhov zoo sib xws.Qhov sib txawv tseem ceeb ntawm UHMW thiab HDPE yog tias UHMW muaj cov saw hlau ntev ntev nrog cov luj molecular siab heev thaum HDPE muaj qhov sib piv siab-rau-qhov sib piv.
UHMW stands rau Ultra High Molecular Nyhav polyethylene.Nws kuj tau hais los ntawm UHMWPE.Lub sij hawm HDPE sawv cev rau High Density Polyethylene.
UHMW yog dab tsi?
UHMW yog ultra-siab molecular hnyav polyethylene.Nws yog ib hom thermoplastic polymer.Cov khoom siv polymer no muaj cov hlua hlau ntev heev uas muaj qhov hnyav molecular (kwv yees li 5-9 lab amu).Yog li ntawd, UHMW muaj qhov siab tshaj plaws molecular ceev.Txawm li cas los xij, qhov pom ntawm qhov sib xyaw no yog qhov txawv ntawm HDPE.
Properties of UHMW
Cov khoom tseem ceeb ntawm UHMW muaj raws li hauv qab no.
Nws yog cov khoom siv tawv.
Nws muaj lub zog cuam tshuam
Tsis muaj ntxhiab thiab tsis qab
Muaj peev xwm zawv zawg
Txhaum tsis kam
Nws yog heev tsis-adhesive
Lub compound yog non-toxic, thiab muaj kev nyab xeeb.
Nws tsis nqus dej.
Tag nrho cov saw hlau polymer nyob rau hauv UHMW ntev heev, thiab lawv ua raws tib txoj kev.Txhua lub saw hlau yog sib txuas nrog lwm cov saw hlau nyob ib puag ncig ntawm Van der Waal rog.Qhov no ua rau tag nrho cov qauv tawv heev.
UHMW yog tsim los ntawm polymerization ntawm monomer, ethylene.Lub polymerization ntawm ethylene tsim cov khoom siv polyethylene.Cov qauv ntawm UHMW yog qhov txawv ntawm HDPE vim yog txoj kev tsim khoom.UHMW yog tsim nyob rau hauv lub xub ntiag ntawm metallocene catalyst (HDPE yog tsim nyob rau hauv lub xub ntiag ntawm Ziegler-Natta catalyst).
Applications of UHMW
Kev tsim cov hnub qub log
Ntsia hlau
Rollers
Gears
zawv zawg daim hlau
HDPE yog dab tsi?
HDPE yog polyethylene siab ceev.Nws yog cov khoom siv thermoplastic polymer.Cov khoom no muaj qhov ntom ntom ntom thaum piv rau lwm hom polyethylene.Qhov ceev ntawm HDPE yog muab li 0.95 g / cm3.Txij li thaum lub degree ntawm polymer saw branching nyob rau hauv cov ntaub ntawv no yog tsawg heev, lub polymer chains yog packed nruj nreem.Qhov no ua rau HDPE kuj nyuaj thiab muab kev tiv thaiv siab.HDPE tuaj yeem ua haujlwm hauv qhov kub thiab txias ntawm 120°C yam tsis muaj kev phom sij.Qhov no ua rau HDPE autoclavable.
Cov khoom ntawm HDPE
Cov khoom tseem ceeb ntawm HDPE suav nrog,
Nyuaj heev
Siab cuam tshuam resistant
Autoclavable
opaque los yog translucent tsos
Siab zog-rau-qhov sib piv
Lub teeb nyhav
Tsis muaj los yog tsawg dua cov kua dej
Tshuaj tiv thaiv
HDPE yog ib qho ntawm cov khoom siv yas uas yooj yim rau rov siv dua.Cov khoom no txiav txim siab cov kev siv ntawm HDPE.
Kev siv ntawm HDPE
Qee cov ntawv thov tseem ceeb suav nrog hauv qab no.
Siv los ua ntim rau ntau cov kua sib xyaw xws li mis nyuj thiab khaws cov tshuaj xws li cawv.
Los tsim cov hnab yas khw
Cov tais
Cov yeeb nkab fittings
HDPE kuj tseem siv rau cov laug cam
Dab tsi yog qhov zoo sib xws ntawm UHMW thiab HDPE?
UHMW thiab HDPE yog ua los ntawm ethylene monomers.
Ob leeg yog thermoplastic polymers.
Ob leeg muaj ib tug indistinguishable tsos.
| UHMW vs HDPE | |
| UHMW yog ultra-siab molecular hnyav polyethylene. | HDPE yog polyethylene siab ceev. |
| Qauv | |
| UHMW muaj cov saw hlau ntev heev. | HDPE muaj luv luv polymer chains piv rau UHMW. |
| Molecular Luj ntawm Polymer Chains | |
| Cov saw hlau polymer ntawm UHMW muaj qhov hnyav heev molecular. | Cov saw hlau polymer ntawm HDPE muaj qhov hnyav molecular piv rau UHMW. |
| Ntau lawm | |
| UHMW yog tsim nyob rau hauv lub xub ntiag ntawm metallocene catalyst. | HDPE yog tsim nyob rau hauv lub xub ntiag ntawm Ziegler-Natta catalyst. |
| Kev nqus dej | |
| UHMW tsis nqus dej (zero absorption). | HDPE tuaj yeem nqus dej me ntsis. |
Cov ntsiab lus-UHMW vs HDPE
Ob leeg UHMW thiab HDPE yog ua los ntawm ethylene monomers ntawm polymerization.Qhov sib txawv tseem ceeb ntawm UHMW thiab HDPE yog tias UHMW muaj cov saw hlau ntev ntev nrog cov luj molecular siab heev thaum HDPE muaj qhov sib piv siab-rau-qhov sib piv.
Post lub sij hawm: Sep-11-2022
