Dab tsi yog lub luag haujlwm ntawm fillers hauv kev sib txhuam cov khoom siv?
Kev xaiv kom raug ntawm cov fillers yog qhov tseem ceeb hauv kev txiav txim siab kev ua haujlwm ntawm cov khoom sib txhuam thiab cov txheej txheem tsim khoom. Yog li, dab tsi yog lub luag hauj lwm ntawm fillers, uas yog indispensable nyob rau hauv kev sib txhuam cov khoom? Niaj hnub no, Hualong kev sib txhuam phaj chaw tsim tshuaj paus yuav tham nrog koj.
Lub luag haujlwm ntawm fillers nyob rau hauv cov ntaub ntawv sib txhuam yog los txhim kho kev sib txhuam thiab hnav lub zog, lub cev thiab cov khoom siv kho tshuab thiab txo cov nqi. Txij li thaum muaj ntau hom fillers nrog ntau lub zog, qhov cuam tshuam tiag tiag yog qhov nyuaj. Cov duab ntawm tus muab tub lim ho hloov cov filling. Feem ntau hais lus, fibrous thiab flaky fillers muaj txiaj ntsig zoo rau cov khoom siv dag zog ntawm cov khoom siv organic, tab sis cuam tshuam rau molding thiab kev ua haujlwm; spherical fillers, ntawm qhov tsis sib xws, txhim kho molding thiab kev ua haujlwm ntawm cov khoom, tab sis degrade nws. Mechanical zog ntawm cov khoom.
Nyob rau hauv ib tug tej yam ntau yam, qhov me me particle txoj kab uas hla ntawm muab tub lim, qhov ntau dua adsorption nyhuv ntawm polymer molecules ntawm lub muab tub lim. Nyob rau tib qhov ntau npaum li cas, qhov zoo dua cov khoom, qhov siab dua qhov kev ua kom muaj zog, thiab qhov muaj zog ntawm qhov sib cuam tshuam ntawm cov resin thiab muab tub lim yog ua ke; lub finer particles, qhov ntau dua qhov kev txhim kho nyob rau hauv lub rigidity, kev cuam tshuam, tensile lub zog, seem stability thiab cov tsos ntawm cov khoom.
Muaj qhov sib txawv ntawm qhov ntom ntawm cov khoom sib txhuam thiab qhov sib txawv ntawm cov muab tub lim, thiab qhov sib txawv ntawm cov chaw muab tub lim los ntawm kev muab cov nqaij txau uas tau tawg. Yog li ntawd, nws coj nyuaj rau kev sib tov thiab molding ua. Txhawm rau txhim kho qhov kev sib raug zoo ntawm cov muab tub lim thiab cov cob, qee zaum nws yog qhov tsim nyog los qhib lub muab tub lim. Coupling agents yog ib hom ntawm cov organic tshuaj uas tsau rau ntawm qhov chaw ntawm inorganic fillers los ntawm cov tshuaj tiv thaiv los tsim ib txheej txheej. Cov tshuaj inorganic kho nrog lawv muaj affinity rau cov organic tshuaj, yog li pab txhawb kev sib txuas ntawm ob cov ntaub ntawv.
