1. Cov qauv zoo thiab kev sib xyaw ntawm Round Silica
1.1 Morphological txhais thiab crystallinity
(Spherical Silica)
Round silica hais txog silicon dioxide (SIJ OB) particles engineered nrog ib tug heev uniform, nyob ze-zoo meej spherical, txheeb xyuas lawv los ntawm cov pa tsis xwm yeem lossis angular silica hmoov tau los ntawm txhua qhov chaw ntuj..
Cov khoom no tuaj yeem yog amorphous lossis crystalline, Txawm hais tias daim ntawv amorphous dominates kev lag luam daim ntawv thov vim nws hwm tshuaj lom neeg kev ruaj ntseg, txo sintering kub theem, thiab tsis muaj theem hloov uas tuaj yeem ua rau microcracking.
Lub round morphology tsis yog ib txwm muaj; nws yuav tsum tau ua kom tiav los ntawm kev tswj cov txheej txheem uas tswj cov nucleation, kev loj hlob, thiab thaj tsam thaj tsam zog txo.
Tsis zoo li smashed quartz los yog silica integrated, uas tso saib rugged npoo thiab dav loj ncig, spherical silica nta thaj chaw du, siab packing thickness, thiab isotropic ua nyob rau hauv mechanical ntxhov siab vim, ua rau nws zoo heev rau cov ntawv thov raug.
Qhov me me feem ntau txawv ntawm 10s ntawm nanometers rau ntau micrometers, nrog kev tswj nruj ntawm qhov loj me me ua rau nws ua tau rau kev ua tau zoo hauv cov tshuab sib xyaw.
1.2 Regulated Synthesis Pathways
Cov txheej txheem tseem ceeb rau kev tsim spherical silica yog cov txheej txheem Stöber, Lub tswv yim sol-gel tsim nyob rau xyoo 1960 uas suav nrog hydrolysis thiab condensation ntawm silicon alkoxides– Feem ntau yog tetraethyl orthosilicate (TEOS)– hauv kev xaiv cawv nrog ammonia ua tus tsav tsheb.
Los ntawm kev kho qhov tsis xws li reactant tsom, dej-rau-alkoxide proportions, pH, qhov kub thiab txias, thiab lub sijhawm tshuaj xyuas, cov kws tshawb fawb tuaj yeem kho qhov loj me me, monodispersity, thiab thaj chaw chemistry.
Cov txheej txheem no yields heev uniform, non-agglomerated spheres nrog superb batch-rau-batch reproducibility, tseem ceeb heev rau kev tsim khoom niaj hnub.
Cov txheej txheem sib txawv muaj xws li nplaim taws spheroidization, qhov twg tsis sib xws silica fragments yog melted thiab txhim kho txoj cai mus rau hauv rounds siv high-temperature plasma los yog hluav taws kev kho mob., thiab emulsion-raws li cov tswv yim uas tso cai rau encapsulation los yog core-plhaub structuring.
Rau kev lag luam loj hauv kev tsim khoom, sodium silicate-raws li nag lossis daus txoj kev kuj tseem ua haujlwm, siv tus nqi-zoo scalability thaum khaws cia tsim nyog sphericity thiab pureness.
Nto functionalization thoob plaws los yog tom qab synthesis– xws li implanting nrog silanes– tuaj yeem qhia cov pab pawg ntuj (e.g., amino, epoxy, los yog vinyl) los txhawb kev sib raug zoo nrog polymer matrices los yog ua rau bioconjugation.
( Spherical Silica)
2. Functional Properties thiab Efficiency Advantages
2.1 Flowability, Chaw thau khoom ceev, thiab Rheological Habits
Ntawm ib qho ntawm cov txiaj ntsig tseem ceeb tshaj plaws ntawm spherical silica yog nws qhov tshwj xeeb flowability contrasted rau angular counterparts., ib yam khoom tseem ceeb hauv kev ua hmoov, txhaj tshuaj molding, thiab additive manufacturing.
Qhov tsis muaj cov npoo ntse txo qhov cuam tshuam ntawm kev sib tsoo, tso cai tuab, homogeneous packing nrog tsawg kawg nkaus void cheeb tsam, uas txhim kho cov neeg kho tshuab kev ncaj ncees thiab thermal conductivity ntawm cov tebchaw zaum kawg.
Hauv kev ntim khoom digital, Cov ntim ntim siab ncaj ncaj sib npaug los txo cov ntsiab lus resin hauv cov encapsulants, Txhim khu kev ruaj ntseg thermal thiab txo coefficient ntawm thermal expansion (CTE).
Tsis tas li ntawd, spherical bits impart rheological thaj chaw zoo rau kev ncua thiab pastes, minimizing viscosity thiab tiv thaiv shear thickening, uas xyuas kom meej muab du thiab uniform npog hauv semiconductor manufacturing.
Qhov kev tswj hwm tus cwj pwm no yog qhov tseem ceeb hauv cov ntawv thov xws li flip-chip underfill, qhov twg cov khoom siv tshwj xeeb tso thiab tsis muaj qhov txhaws yog xav tau.
2.2 Mechanical thiab Thermal Security
Spherical silica qhia tau hais tias zoo heev mechanical toughness thiab saj zawg zog modulus, ntxiv rau kev txhawb nqa ntawm polymer matrices yam tsis tau tsim kev ntxhov siab ntawm cov ces kaum ntse.
Thaum muab tso rau hauv epoxy resins lossis silicones, nws txhim kho firmness, siv kuj, thiab kev ruaj ntseg seem nyob rau hauv thermal caij tsheb kauj vab.
Nws qis thermal loj hlob coefficient (~ 0.5 × 10 ⁻⁶ / K) zoo sib xws ntawm silicon wafers thiab luam ntawv Circuit Court boards, txo qis thermal tsis sib xws kev ntxhov siab hauv microelectronic gadgets.
Tsis tas li ntawd, puag ncig silica khaws cia cov qauv kev ntseeg siab ntawm qhov ntsuas kub siab (kwv yees ~ 1000 ° C nyob rau hauv inert ambiences), ua rau nws tsim nyog rau cov ntawv thov kev ntseeg siab hauv aerospace thiab automotive electronic devices.
Kev sib xyaw ntawm thermal kev ruaj ntseg thiab hluav taws xob rwb thaiv tsev zoo dua txhim kho nws cov txiaj ntsig hauv cov khoom siv hluav taws xob thiab cov khoom ntim LED.
3. Kev siv hauv Electronic Devices thiab Semiconductor Industry
3.1 Lub luag haujlwm hauv Electronic Product Packaging thiab Encapsulation
Spherical silica yog lub hauv paus khoom nyob rau hauv lub lag luam semiconductor, Feem ntau yog siv los ua ib qho muab tub lim hauv epoxy molding tebchaw (EMCs) rau chip encapsulation.
Hloov cov khoom tsis sib xws nrog cov kab ib puag ncig tau rov tsim cov khoom ntim khoom tshiab los ntawm kev ua kom muaj ntau dua cov khoom ntim khoom. (> 80 wt%), txhim kho pwm khiav, thiab qis cable txav mus thoob plaws kev hloov molding.
Qhov kev nce qib no txhawb nqa qhov miniaturization ntawm cov khoom siv hluav taws xob sib txuas thiab kev loj hlob ntawm cov phiaj xwm qib siab xws li cov txheej txheem-hauv-pob khoom (SiP) thiab kiv cua-tawm wafer-theem khoom ntim khoom (FOWLP).
Qhov chaw du nto ntawm puag ncig cov khoom kuj txo qis kev puas tsuaj ntawm cov kub zoo los yog tooj liab sib txuas xov hlau, txhim kho cov cuab yeej kev ncaj ncees thiab rov qab los.
Tsis tas li ntawd, lawv cov xwm txheej isotropic ua rau qee yam kev nyuaj siab faib tawm, txo qhov kev pheej hmoo ntawm delamination thiab fracturing thaum caij tsheb kauj vab thermal.
3.2 Siv hauv Polishing thiab Planarization txheej txheem
Hauv chemical mechanical planarization (CMP), puag ncig silica nanoparticles ua haujlwm ua cov neeg sawv cev abrasive hauv slurries tsim los polish silicon wafers, optical lo ntsiab muag, thiab magnetic cia chaw media.
Lawv cov duab sib xws thiab qhov loj me kom ntseeg tau tias cov khoom tshem tawm tsis tu ncua thiab qhov chaw me me ntawm qhov chaw tsis zoo xws li khawb lossis qhov pits..
Nto-hloov puag ncig silica tuaj yeem kho kom haum rau cov ntsiab lus pH ib puag ncig thiab rhiab heev, boosting selectivity ntawm ntau yam ntaub ntawv ntawm ib tug wafer nto cheeb tsam.
Qhov tseeb no ua rau kev tsim khoom ntawm ntau cov txheej txheem semiconductor nrog nanometer-scale flatness, ib qho yuav tsum tau rau lub lithography tshiab thiab gadget assimilation.
4. Cov ntawv thov tshwm sim thiab hla kev qhuab qhia
4.1 Biomedical thiab Diagnostic ua siv
Tshaj li cov khoom siv hluav taws xob, puag ncig silica nanoparticles tau ua haujlwm zoo hauv biomedicine vim lawv biocompatibility, yooj yim ntawm functionalization, thiab tunable porosity.
Lawv ua raws li cov chaw muab tshuaj, qhov twg cov neeg ua haujlwm kho kom rov zoo li qub tau sau rau hauv cov qauv mesoporous thiab tsim tawm hauv cov lus teb rau stimuli xws li pH lossis enzymes.
Hauv kev kuaj mob, fluorescently cais silica spheres ua haujlwm ruaj khov, non-toxic probes rau kev yees duab thiab biosensing, outshining quantum dots nyob rau hauv ib puag ncig lom.
Lawv qhov chaw tuaj yeem txuas nrog cov tshuaj tiv thaiv, peptides, los yog DNA rau lub hom phiaj tshawb nrhiav cov kab mob lossis cov kab mob qog noj ntshav.
4.2 Additive Production thiab Compound Products
Hauv 3D luam ntawv, tshwj xeeb hauv binder jetting thiab stereolithography, spherical silica hmoov txhim khu hmoov txaj ntom ntom thiab txheej sib haum xeeb, nqa txog kev daws teeb meem siab dua thiab kev siv tshuab ua kom muaj zog hauv cov plooj (porcelain) luam tawm.
Raws li kev txhim kho theem hauv steel matrix thiab polymer matrix composites, nws txhim khu rigidity, thermal xyuas, thiab hnav tsis kam yam tsis muaj kev cuam tshuam kev ua haujlwm.
Kev tshawb nrhiav kev tshawb fawb kuj tseem tshawb nrhiav cov kab mob sib kis– core-plhaub cov qauv nrog silica plhaub hla cov hlau nplaum lossis plasmonic cores– rau multifunctional cov ntaub ntawv nyob rau hauv ceeb toom thiab lub hwj chim cia chaw.
Hauv kev xaus, puag ncig silica nthuav qhia li cas morphological tswj ntawm micro- thiab nanoscale tuaj yeem hloov cov khoom ib txwm ua rau kev ua haujlwm siab ua haujlwm thoob plaws cov cuab yeej niaj hnub sib txawv.
Los ntawm kev tiv thaiv microchips mus rau kev kho mob kev kuaj mob, nws qhov sib xyaw ua ke ntawm lub cev, tshuaj, thiab cov khoom rheological txuas ntxiv tsav kev txhim kho hauv kev tshawb fawb thiab kev tsim vaj tsev.
5. Tus kws kho mob
TRUNNANO yog tus neeg muag khoom ntawm tungsten disulfide nrog dhau 12 xyoo dhau los hauv nano-tsim hluav taws xob txuag thiab kev tsim kho nanotechnology. Nws lees txais kev them nyiaj ntawm Credit Card, T/T, West Union thiab Paypal. Trunnano yuav xa cov khoom rau cov neeg siv khoom txawv teb chaws los ntawm FedEx, DHL, los ntawm huab cua, los yog hiav txwv. Yog xav paub ntxiv txog organic silicon dioxide, thov koj xav tiv tauj peb thiab xa cov lus nug([email protected]).
Cim npe: Spherical Silica, silicon dioxide, Silica
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