2. Qhov twg hauv qab no muaj tsawg dua crystallinity? Kev piav qhia: Nws yog qhov tseeb tias, hlau thiab npib tsib xee ua cov hlau muaj ib daim ntawv crystalline, whereas high density polyethylene (HDPE) thiab low-density ethylene (LDPE) yog ib chav kawm ntawm polymers.
Qhov twg hauv qab no yog cov qauv tsis-crystalline?
iav yog ib qho amorphous lossis tsis yog crystalline khoom. - Qhov no yog vim hais tias thaum iav ua, cov khoom uas feem ntau muaj silica yog sai txias los ntawm nws cov kua lub xeev tab sis nws tsis solidify thaum nws kub poob qis dua nws melting point. Yog li, iav tuaj yeem raug xa mus ua 'supercooled' kua.
Qhov twg hauv qab no muaj HCP siv lead ua qauv?
Cov hlau uas yog ib feem ntawm HCP siv lead ua yog Zinc, Magnesium, thiab Cadmium. Thaum cov hlau uas yog ib feem ntawm CCP yog, tooj liab, nyiaj, thiab kub, uas yog cov hlau npib. Li no, magnesium, Mg yog hlau uas muaj HCP qauv, yog li kev xaiv B yog qhov tseeb.
thawj kauj ruam koom nrog hauv txheej txheem ntawm kev npaj cov qauv ntawm cov khoom siv yog dab tsi?
Kev xaiv. Xaiv tus qauv kuaj tus neeg sawv cev kom ua tus yam ntxwv zoo ntawm microstructure lossis cov yam ntxwv ntawm kev txaus siab yog thawj kauj ruam tseem ceeb heev. … Kev faib tawm. Cov qauv kuaj tau ua tib zoo muab cais kom tsis txhob hloov pauv lossis rhuav tshem cov qauv ntawm cov ntaub ntawv. …
Qhov twg hauv qab no yog daim ntawv cog lus thib ob ntawm cov thermoplastics?
Yogntawm cov hauv qab no yog ib qho kev sib cog lus thib ob ntawm cov thermoplastics? Nqe lus piav qhia: Thermoplastics muaj ib qho kev sib txuas ntawm '2-degree' daim ntawv cog lus thib ob.
