Cov txheej txheem yooj yim ntawm cov khoom siv silica yog tsim los ntawm silicon oxygen txuas, thaum cov hlua sab txuas txuas nrog silicon atoms nrog lwm pawg organic. Yog li ntawd, nyob rau hauv cov qauv ntawm cov khoom organosilicon, nws muaj ob pawg organic thiab inorganic qauv. Qhov tshwj xeeb muaj pes tsawg leeg thiab cov qauv molecular ua rau nws sib xyaw ua ke ntawm cov khoom siv organic thiab inorganic zog. Piv nrog rau lwm cov ntaub ntawv polymer, cov khoom siv silicone
Qhov tseem ceeb tshaj plaws yog tias:
1. kub tsis kam
Silicone khoom yog silicon oxygen daim ntawv cog lus (SiO) raws li cov saw tseem ceeb ntawm CC daim ntawv cog lus yog 82 txhiab thiab 600 kcal / mole, SiO daim ntawv cog lus / 121 txhiab nyob rau hauv mole feem ntawm silicone, yog li thermal stability ntawm silicone khoom, kub kub. (los yog hluav taws xob) molecular bond tsis tawg, tsis decomposition. Silicone tsis yog tsuas yog tiv taus kub thiab kub tsis kam, tuaj yeem siv rau ntau qhov kub thiab txias. Ob qho tshuaj lom neeg thiab lub cev thiab cov khoom siv kho tshuab sib txawv me ntsis nrog qhov kub thiab txias.
2. huab cua tsis kam
Cov saw tseem ceeb ntawm cov khoom lag luam organosilicon yog Si - O, uas tsis muaj qhov tshwj xeeb daim ntawv cog lus, yog li nws tsis yooj yim rau decomposed los ntawm ultraviolet lub teeb thiab ozone. Organic silicon muaj thermal stability zoo dua, hluav taws xob tiv thaiv thiab huab cua tsis zoo dua li lwm cov ntaub ntawv polymer. Organic silicon muaj lub neej ntev txog li ob peb xyoos hauv ib puag ncig ntuj.
3. hluav taws xob rwb thaiv tsev kev ua tau zoo
Cov khoom siv silicone muaj cov khoom zoo dielectric, dielectric poob, voltage tsis kam, arc tsis kam, corona kuj, ntim resistivity thiab nto coefficient yog qhov zoo tshaj plaws nyob rau hauv cov khoom insulating, thiab lawv cov khoom hluav taws xob los ntawm qhov kub thiab qhov zaus yog tsawg heev. Yog li ntawd, lawv yog cov khoom siv hluav taws xob ruaj khov thiab siv dav hauv cov khoom siv hluav taws xob thiab hluav taws xob. Ntxiv nrog rau nws cov cua kub zoo heev, silicone muaj cov dej zoo tiv thaiv kab mob, uas yog qhov kev lees paub zoo rau kev siv cov khoom siv hluav taws xob hauv cov dej ntub dej.
4. physiological inertia
Polysiloxane yog ib qho ntawm cov tshuaj tsis muaj zog tshaj plaws paub. Lawv muaj peev xwm tiv taus cov kab mob lom neeg laus, tsis muaj kev cuam tshuam nrog cov tsiaj, thiab muaj cov khoom zoo dua los tiv thaiv coagulant.
5. Tsawg nto nro thiab qis nto zog
Cov saw tseem ceeb ntawm cov organic silicon yog supple, thiab nws cov intermolecular quab yuam yog ntau zog dua li ntawm hydrocarbon. Yog li ntawd, lub viscosity ntawm hydrocarbon yog qis dua li ntawm molecular hnyav hydrocarbon, lub zog saum npoo tsis muaj zog, thiab cov yeeb yaj kiab ua kom muaj peev xwm muaj peev xwm muaj zog. Qhov no tsis tshua muaj siab nro thiab tsis tshua muaj zog saum npoo yog lub ntsiab yog vim li cas rau nws ntau daim ntaub ntawv: hydrophobic, defoaming, ua npuas ncauj stabilization, anti sticking, lubrication, glazing thiab lwm yam zoo heev zog.