Silicone cov ntaub ntawv, los yog cov organic silicon tebchaw, yog ib chav kawm ntawm cov tebchaw uas muaj lub cev thiab tshuaj lom neeg. Lawv muaj Si-C daim ntawv cog lus thiab tsawg kawg yog ib pawg organic txuas ncaj qha rau silicon atom. Cov hauv qab no yog cov khoom tseem ceeb ntawm lub cev thiab tshuaj lom neeg ntawm cov khoom siv silicone:
I. Lub cev muaj zog
Thermal stability:
Cov khoom siv silicone muaj ib daim ntawv cog lus silicon-oxygen (Si-O) raws li cov qauv saw tseem ceeb. Lub zog ntawm daim ntawv cog lus no kuj siab heev (121 kcal / g molecule, piv nrog 82.6 kcal / g molecule ntawm CC daim ntawv cog lus), uas ua rau cov khoom siv silicone ruaj khov ntawm qhov kub thiab tsis yooj yim rau decompose los yog tawg. Yog li ntawd, cov khoom siv silicone muaj qhov kub thiab txias tsis kam, thiab tuaj yeem siv rau ntau qhov kub thiab txias.
Nto tension:
Cov khoom siv silicone muaj qhov nro qis, uas ua rau lawv muaj peev xwm ua kom zoo nkauj thiab ntub dej. Qhov tsis tshua muaj qhov nro no kuj yog ib qho laj thawj tseem ceeb vim li cas cov khoom siv silicone tau siv ntau yam (xws li hydrophobic, defoaming, anti-sticking, thiab lwm yam).
Viscosity thiab fluidity:
Cov saw tseem ceeb ntawm cov ntaub ntawv silicone yog hloov tau thiab lub zog intermolecular kuj tsis muaj zog, yog li lawv cov viscosity tsawg thiab lawv cov fluidity zoo. Cov cuab yeej no ua rau cov khoom siv silicone hloov tau yooj yim hauv kev ua thiab kev siv.
Gas permeability:
Silicone cov ntaub ntawv muaj cov roj permeability siab, uas cuam tshuam rau lawv cov sealing kev ua tau zoo rau qee qhov, tab sis muaj txiaj ntsig zoo hauv qee yam kev siv tshwj xeeb (xws li cov pa roj sib cais).
2. Cov khoom siv tshuaj
Huab cua tsis kam:
Txij li thaum tsis muaj ob daim ntawv cog lus hauv cov saw tseem ceeb ntawm cov khoom siv silicone, lawv tsis yooj yim decomposed los ntawm ultraviolet lub teeb thiab ozone, thiab muaj huab cua zoo heev. Qhov no tso cai rau cov khoom siv silicone kom muaj kev ruaj khov rau lub sijhawm ntev hauv qhov chaw sab nraum zoov.
Corrosion kuj:
Silicone cov ntaub ntawv muaj kev tiv thaiv zoo rau ntau yam tshuaj (xws li acids, alkalis, ntsev, thiab lwm yam), uas ua rau lawv siv dav hauv tshuaj, textile, zaub mov thiab lwm yam lag luam.
Hluav taws xob rwb thaiv tsev:
Cov ntaub ntawv silicone muaj cov khoom siv hluav taws xob zoo heev, thiab lawv cov dielectric poob, qhov hluav taws xob tsis kam, arc tsis kam, corona kuj thiab lwm yam khoom zoo heev. Qhov no ua rau cov ntaub ntawv silicone siv dav hauv kev lag luam hluav taws xob thiab hluav taws xob, xws li kev tsim cov xov hlau thiab cables, cov khoom siv hluav taws xob, thiab lwm yam.
Biological inertness:
Cov ntaub ntawv silicone tsis muaj tshuaj lom, tsis muaj ntxhiab thiab physiologically inert rau tib neeg cov ntaub so ntswg, uas txhais tau hais tias lawv yuav tsis hnov tsw ntawm tib neeg cov ntaub so ntswg los yog ua rau tsis xis nyob. Yog li ntawd, cov ntaub ntawv silicone tau dav siv hauv kev lag luam kho mob, xws li hauv kev tsim cov pob qij txha, cov pacemakers thiab lwm yam khoom siv kho mob.
