Qhov sib txawv tseem ceeb ntawm HDPE thiab MDPE yog HDPE muaj qhov rhiab heev rau kev ntxhov siab tawg thaum MDPE muaj kev ntxhov siab zoo dua thaum piv rau HDPE.
Cov ntsiab lus HDPE sawv cev rau siab ntom ntom polyethylene thaum cov ntsiab lus MDPE sawv cev rau nruab nrab ntom polyethylene. Polyethylene lossis polythene yog cov khoom siv polymer uas muaj cov khoom siv ethylene rov ua dua. Cov khoom no muaj ntau daim ntawv thov, feem ntau yog cov khoom ntim.
YHDPE yog dab tsi?
HDPE yog qhov ntom ntom polyethylene, cov khoom siv polymer uas tsim los ntawm polymerization ntawm ethylene monomers. Nws yog cov khoom siv thermoplastic (ua moldable ntawm qhov kub thiab txias thiab solidify thaum txias). Cov khoom no muaj qhov sib piv siab ntawm lub zog thiab qhov ntom ntawm cov khoom siv polymer. Yog li ntawd, nws pom nws siv nyob rau hauv zus tau tej cov yas fwj, kav, thiab lwm yam. Qhov ceev ntawm cov khoom no polyethylene yog 0.93 txog 0.97 g/cm3
Daim duab 01: Lub Cim rau HDPE
Qhov zoo ntawm kev siv HDPE dua lwm cov polymers suav nrog cov nqi-zoo, muaj peev xwm tiv taus qhov kub thiab txias, tsis muaj leaching zog, tiv thaiv UV hluav taws xob, tiv thaiv ntau yam tshuaj thiab nws yog cov khoom siv tawv. Muaj qee qhov tsis zoo thiab. Qhov tsis zoo muaj xws li huab cua tsis zoo, flammability, rhiab heev rau kev ntxhov siab tawg, thiab lwm yam.
Qee yam uas tib neeg tsim siv HDPE yog raws li hauv qab no:
- lub raj mis yas
- Toys
- Tshuaj ntim khoom
- Pib system
- hnab yas
- Snowboard
- Roj tank hauv tsheb
MDPE yog dab tsi?
MDPE yog nruab nrab ntom polyethylene. Nws yog ib daim ntawv ntawm polyethylene uas txawv ntawm lwm cov ntaub ntawv polyethylene raws li qhov ceev. Cov khoom no yog nyob rau hauv qeb ntawm thermoplastics. Qhov ntom ntom rau cov khoom no yog 926–0.940 g / cm 3 Yog li, nws tsawg dua li HDPE.
Cov tswv yim ntau lawm rau MDPE yog cov polymerization siv Ziegler-Natta catalysts. Cov khoom siv no muaj qhov cuam tshuam loj heev thiab txo qis cov khoom tiv thaiv. Sib nrug ntawm qhov ntawd, nws muaj qhov khawb tsawg dua thaum piv rau HDPE. Txawm li cas los xij, qhov kev ntxhov siab tawg tsis kam yog siab dua. Cov khoom siv no feem ntau yog siv los tsim cov kav dej, cov hnab ntim, fittings, ntim zaj duab xis, hnab nqa khoom, thiab lwm yam.
Dab tsi yog qhov zoo sib xws ntawm HDPE thiab MDPE?
- Ob leeg yog cov khoom siv polymer uas poob rau hauv qeb ntawm cov thermoplastics
- Lawv ob leeg yog cov ntaub ntawv ntawm polyethylene uas sib txawv ntawm ib leeg hauv lawv qhov ntom thiab cov khoom
Qhov txawv ntawm HDPE thiab MDPE yog dab tsi?
YHDPE vs MDPE |
|
| HDPE yog polyethylene high-density, cov khoom siv polymer uas tsim los ntawm polymerization ntawm ethylene monomers. | MDPE yog nruab nrab ntom polyethylene. |
| Zaj ntau yam | |
| Qhov ceev yog 0.93 txog 0.97 g / cm3. | Qhov ntom ntom rau MDPE cov khoom yog 926 txog 0.940 g / cm3. |
| Kaw Resistance | |
| Nws muaj qib siab ntawm khawb tiv thaiv. | Nws muaj qib qis ntawm khawb tsis kam. |
| Kev nyuaj siab | |
| Kev ntxhov siab rau kev ntxhov siab tawg yog siab. | Qhov rhiab rau kev ntxhov siab tawg yog qis. |
Summary – HDPE vs MDPE
Ob leeg MDPE thiab HDPE yog cov ntaub ntawv ntawm polyethylene polymers. Cov polymers tsim thaum ethylene molecules undergo polymerization nyob rau hauv ntau yam tshuaj tiv thaiv. Qhov sib txawv ntawm HDPE thiab MDPE yog tias HDPE muaj lub siab rhiab heev rau kev ntxhov siab tawg thaum MDPE, hauv kev sib piv, muaj kev ntxhov siab zoo dua.
