Qhov sib txawv tseem ceeb ntawm silicone thiab silica yog tias silicone yog cov khoom siv polymeric, whereas silica yog silicon dioxide.
Silicone thiab silica yog cov khoom tseem ceeb hauv kev lag luam. Ob leeg cov khoom no muaj silicon atoms ua ib feem. Txawm li cas los xij, ob yam khoom no muaj cov tshuaj lom neeg thiab lub cev sib txawv, uas ua rau lawv muaj txiaj ntsig hauv kev siv sib txawv.
Y Silicone yog dab tsi?
Silicone yog ib qho polymer uas muaj siloxane. Yog li ntawd, nws tseem hu ua polysiloxane. Silicone feem ntau tshwm sim raws li cov roj tsis muaj xim lossis ua cov khoom zoo li roj hmab. Nws muaj txiaj ntsig zoo hauv sealants, adhesives, lubricants, tshuaj, khoom siv ua noj, thermal rwb thaiv tsev, thiab lwm yam. Muaj qee cov ntaub ntawv ntawm silicone, xws li silicone roj, silicone roj, silicone roj hmab, silicone resin, silicone caulk, thiab lwm yam.
Daim duab 01: Silicone Caulk
Silicone muaj ib qho inorganic silicon-oxygen caj qaum saw. Cov saw no muaj ob pawg organic txuas rau txhua qhov chaw silicon. Feem ntau, pawg organic yog pawg methyl. Cov khoom no tuaj yeem muaj nyob hauv cov qauv cyclic lossis cov qauv polymeric. Peb tuaj yeem sib txawv ntawm -Si-O- saw ntev, sab pawg, crosslinking, thiab lwm yam. Peb tuaj yeem tsim cov silicones nrog ntau yam khoom thiab cov khoom sib xyaw. Qhov sib xws ntawm silicone tuaj yeem sib txawv ntawm cov kua rau gel mus rau roj hmab rau cov yas tawv tawv.
Khoom ntawm Silicone
Peb tuaj yeem sau cov khoom tseem ceeb ntawm silicone raws li hauv qab no:
- Tsawg thermal conductivity
- Low chemical reactivity
- Tsawg toxicity
- Thermal stability
- Tsis lo rau hauv ntau lub substrate
- Tsis muaj kev txhawb nqa rau kev loj hlob microbial
- hluav taws xob rwb thaiv tsev
- High gas permeability
- Resistance to oxygen, ozone, thiab UV teeb
Nyob zoo ib tsoom niam txiv kwv tij phooj ywg sawv daws
Silica yog dab tsi?
Lub sij hawm silica yog lub npe nrov rau silicon dioxide, thiab nws yog oxide ntawm silicon. Peb siv lo lus no los hu ua daim ntawv purest ntawm SiO2. Nws tshwm sim hauv quartz thiab ua cov khoom hauv cov kab mob muaj sia. Nws qhov hnyav yog 60.08 g / mol. Nws zoo nkaus li cov pob tshab. Lub melting point thiab boiling point yog 1,713 ° C thiab 2, 950 ° C, raws li.
Daim duab 02: Qauv ntawm Silicon Dioxide
Silicon dioxide molecules qhia txog tetrahedral geometry, nrog plaub oxygen atoms nyob ib puag ncig silicon atom. Ntxiv mus, silicon dioxide muaj ntau cov ntaub ntawv crystalline; peb hu lawv polymorphs. Tseem muaj qee cov qauv amorphous. Tsis tas li ntawd, peb tuaj yeem hloov silicon dioxide rau hauv silicon los ntawm kev txo cov tshuaj tiv thaiv nrog carbon.
Muaj ntau yam kev siv silicon dioxide. Peb siv nws rau kev tsim cov Portland MAAs, rau xuab zeb casting, hauv hydraulic fracturing, raws li ib tug precursor los ua iav, ua optical fibers rau kev sib txuas lus, raws li ib tug zaub mov additive, thiab lwm yam.
Qhov txawv ntawm Silicone thiab Silica yog dab tsi?
Silicone thiab silica yog cov khoom tseem ceeb inorganic. Feem ntau, silicone yog tsim los siv cov pob zeb silica uas tshwm sim. Qhov sib txawv tseem ceeb ntawm silicone thiab silica yog tias silicone yog cov khoom siv polymeric, whereas silica yog silicon dioxide. Peb tuaj yeem yooj yim npaj silicone los ntawm cov tshuaj tiv thaiv ntawm silicon, oxygen, carbon, thiab hydrogen. Txawm li cas los xij, rau kev npaj ntawm silica, peb siv silicon thiab oxygen.
Muaj ntau yam kev siv silicone thiab silica. Silicone muaj txiaj ntsig zoo hauv kev tsim cov ncuav mog qab zib pwm, khoom siv ua noj, hluav taws xob rwb thaiv tsev, nplaum, thiab lwm yam. Ntawm qhov tod tes, silica tseem ceeb hauv kev tsim cov iav, ceramics, optical fibers, desiccants, thiab lwm yam.
Summary – Silicone vs Silica
Silicone yog ib qho polymer uas muaj siloxane. Lub sij hawm silica yog lub npe nrov rau silicon dioxide, thiab nws yog ib qho oxide ntawm silicon. Qhov sib txawv tseem ceeb ntawm silicone thiab silica yog silicone yog cov khoom siv polymeric, whereas silica yog silicon dioxide.
