iav hloov kub yog piav raws li kub uas 30-50 carbon chains pib txav. Thaum lub iav hloov pauv kub, cov cheeb tsam amorphous muaj kev hloov pauv ntawm lub xeev nruj mus rau lub xeev hloov tau yooj yim ua rau qhov kub ntawm ciam teb ntawm cov khoom hauv lub xeev mus rau lub xeev rubbery.
Lub iav hloov pauv kub yog dab tsi?
iav hloov pauv kub yog qhov sib txawv ntawm 140 ° C txog 370 ° Craws li qib, txheej txheem kho thiab cov dej noo: Rau qib tau hais tseg, iav hloov pauv kub nce ntawm 50 ° C thaum lub sij hawm tom qab kho.
iav hloov pauv kub thiab melting kub yog dab tsi?
iav Hloov Kub Kub: iav hloov pauv kub yog qhov kub uas lub zog iav nyuaj ntawm cov khoom siv amorphous hloov mus rau lub xeev rubbery. Melting Temperature: Melting kub yog qhov kub ntawm cov khoom siv hloov mus rau hauv nws daim ntawv ua kua.
TG thiab TM yog dab tsi?
Cov ntsiab lus TG (lossis Tg) thiab TM (lossis Tm) muab ob qhov tseem ceeb ntawm cov khoom siv polymers. Cov no yog qhov kub ntawm qhov kev ntxhib los mos ntawm polymer hloov. Cov txiaj ntsig no yog cov yam ntxwv ntawm cov polymers. TG yog hais txog qhov iav hloov qhov kub qhov twg TM hais txog qhov kub thiab txias.
Vim li cas thiaj hu ua iav hloov pauv kub?
Thaum lub amorphous polymer yog rhuab, qhov kub ntawm qhov nws hloov ntawm lub khob rau hauv daim ntawv roj hmab yog hu ua iav hloov kub, T g. Ib qho piv txwv muab polymer tsis muaj tus nqi tshwj xeeb ntawm T gvim tias cov iav theem tsis nyob ntawm qhov sib npaug.
Glass Transition Temperature
