Qhov txawv ntawm HDPE & LDPE & LLDPE Cov Ntaub Ntawv
Mar 12, 2018
Tso lus
| Kev Sib Tw Sib Txawv | HDPE | LDPE | LLDPE |
| Tsis hnov qab & Cov tshuaj lom | tsis muaj tsw, tsis muaj tshuaj lom | tsis muaj tsw, tsis muaj tshuaj lom | tsis muaj tsw, tsis muaj tshuaj lom |
| Kev ceev | 0.940-0.966g / cm3 | 0.910-0.940g / cm3 | 0.915-0.935g / cm3 |
| Crystallinity | 85-65% | 45-65% | 55-65% |
| Cov Hom Phiaj Molecular | Muaj cov pa roj carbon thiab hydrocarbons xwb, yuav tsum tau siv zog ntau dua | Lub polymer muaj lub luj me me thiab yuav tawg nrog tsawg zog | Tawm qauv, branched saw, luv luv saw, yuav tsum tau tsawg dua lub zog ua txhaum |
| Softening Point | 125-135C | 90-100 C | 94-108C |
| Mechanical Character | Siab zog, zoo toughness, muaj zog rigidity | Cov neeg ua haujlwm tsis muaj zog | Siab zog, zoo toughness, muaj zog rigidity |
| Tensile Zog | Siab | Tsawg | Siab dua |
| Elongation thaum so | Siab dua | Tsawg | Siab |
| Feem ntau lub zog | Siab dua | Tsawg | Siab |
| Cov ntawv pov thawj kev ruaj ntseg & cov dej tsis thwj | Zoo permeability rau dej, dej vapor, cua, dej tsis haum, zoo anti-permeability | Tsis tshua noo noo tiv thaiv & roj teeb meem | Zoo permeability rau dej, dej vapor, cua, dej tsis haum, zoo anti-permeability |
| Acid thiab alkali corrosion ntawm cov organic kuab tshuaj | Tiv thaiv kom muaj zog oxidant corrosion, acid thiab alkali tsis kam thiab ntau yam kev sib xyaw ntsev, tsis muaj teeb meem nyob rau hauv tej cov organic hnyav, thiab lwm yam. | Acid thiab alkali corrosion, tab sis tsis xuj kuj | Acid thiab alkali, hnyav organic |
| Kub thiab txias ua haujlwm | Zoo tshav kub thiab txias ua hauj, nyob rau hauv chav tsev kub thiab txawm nyob rau hauv qis kub ntawm-40F, zoo heev ua hauj, kub kub embrittlement kub tsawg dua 90C | Tsawg kub hnyiab, tsawg kub hnyiab dua kub dua 70C | Thaum tshav kub kub ua hauj lwm, txias txias ua haujlwm, tsis tshua muaj siab kub hnyav dua li 90C |
| Ib puag ncig kev ntxhov siab tawg | Zoo | Zoo dua | Zoo |