Dab tsi yog hydrostatic lub zog thiab kev ua haujlwm ntawm PB yeeb nkab
Cov lej sib piv ntawm qhov tsawg dua qhov kev ntseeg siab qis dua (σLPL) ntawm kev kwv yees hydrostatic lub zog ntawm PB-H cov khoom muaj qhia hauv qab cov lus hauv qab no:
Hauv kev hais txog kev ua tiav, cov melt ntws tus nqi (melt index) MFR (190 / 2.16) tau nce los ntawm 0.4dg / min nce mus rau 0.6dg / min, thiab kev tsim tawm thiab ceev nrawm tau nce los ntawm 50%. Lub sijhawm crystallization yog lub sijhawm luv. Lub sijhawm crystallization ntawm thawj homopolybutene PB-H khoom yuav tsum tau 14 hnub, uas tom qab ntawd tau nce ntxiv mus rau 10 hnub. Lub sijhawm crystallization ntawm cov cim tshiab PB-H khoom ntawm chav tsev kub yog luv rau 5 hnub. Txhim kho kev ua tau zoo ntau lawm.
Nco tseg: cov ntaub ntawv hauv lub rooj yog cov nuj nqis, tsis yog siv rau cov khoom txhais
Los ntawm cov khoom siv ntawm lub cev ntawm PB-R, cov txheej txheem elastic tau zoo dua, ua rau nws tsim nyog rau coil installation. Qhov ntsuas melt qhov kev txhim kho tseem ceeb, uas ua tau raws li qhov kev ua tau zoo ntawm kev xav tau ntawm cov yeeb nkab manufacturers. Extrusion ceev tau siab thiab lub sijhawm crystallization yog luv heev, ua rau lub sijhawm luv luv-loj ntau lawm tau. Nws yog qhov tsim nyog rau cov yeeb nkab rau kev ua tiav ntawm cov dej saum npoo cua sov thiab cua txias.
Nyob rau hauv cov ntsiab lus ntawm hydrostatic lub zog ntawm PB-R, hauv qab 95 ℃, nkag ntawm lub cev tawg yog nyob rau hauv txoj kab nrog kev siv txoj kab ntawm PB homopolymer, thiab nws cov kev ua haujlwm hauv qhov kub muaj peev txheej tsis zoo li PB-H, tab sis tsis muaj qhov taw qhia tshwm sim. Yog li, nws tuaj yeem ua haujlwm kom nyab xeeb thaum kub kub txog 95 ° C (qhov xwm txheej tsis zoo tshwm sim). PB-R thiab PB-H kwv yees tus ntsuas hydrostatic lub zog nkhaus.
