Indima Ephambili yeSilica (SiO2) kwi-E-Glass

I-Silica (SiO2) idlala indima ebaluleke kakhulu nesisiseko ngokupheleleyoIglasi ye-elektroniki, nto leyo eyenza isiseko sazo zonke iimpawu zayo ezintle. Ngamafutshane, i-silica "yi-network yangaphambili" okanye "i-skeleton" ye-E-glass. Umsebenzi wayo unokwahlulwahlulwa ngokukodwa kwezi ndawo zilandelayo:

1. Ukwakhiwa koLwakhiwo lweNethiwekhi yeGlasi (Umsebenzi oPhambili)

Lo ngumsebenzi oyintloko we-silica. I-Silica yi-oxide eyenza iglasi ngokwayo. I-SiO4​ tetrahedra yayo iqhagamshelwe enye kwenye ngokudibanisa ii-athomu ze-oksijini, zenze isakhiwo senethiwekhi esiqhubekayo, esomeleleyo, nesingaqhelekanga.

• Umzekeliso:Oku kufana nomqolo wentsimbi wendlu esakhiwayo. I-Silica ibonelela ngesakhelo esiphambili sesakhiwo seglasi siphela, ngelixa ezinye izinto (ezifana ne-calcium oxide, i-aluminium oxide, i-boron oxide, njl.njl.) zizinto ezizalisa okanye eziguqula olu luhlu ukuze zilungelelanise ukusebenza.
• Ngaphandle kwesi skeleton se-silica, into ezinzileyo efana neglasi ayinakwenzeka.

2. Ukubonelela ngoMsebenzi oBalaseleyo woKhuseleko loMbane

• Ukumelana okuphezulu koMbane:I-silica ngokwayo ine-ion mobility ephantsi kakhulu, kwaye i-chemical bond (i-Si-O bond) izinzile kwaye inamandla, nto leyo eyenza kube nzima ukuyi-ionisa. Inethiwekhi eqhubekayo eyilwayo iyayithintela kakhulu intshukumo yeetshaja zombane, inika i-E-glass resistivity ephezulu kakhulu kunye nokuchasana nomphezulu.
• Ukulahleka kweDielectric engapheliyo ephantsi kunye neDielectric ephantsi:Iimpawu ze-dielectric ze-E-glass zizinzile kakhulu kwiifrikhwensi eziphezulu kunye namaqondo obushushu aphezulu. Oku kungenxa yokulingana kunye nokuzinza kwesakhiwo senethiwekhi ye-SiO2, okubangela izinga eliphantsi le-polarization kunye nokulahleka kwamandla okuncinci (ukuguqulwa kube bubushushu) kwintsimi yombane enefrikhwensi ephezulu. Oku kuyenza ilungele ukusetyenziswa njengezinto zokuqinisa kwiibhodi zesekethe ze-elektroniki (ii-PCB) kunye nee-insulators ze-high-voltage.

3. Ukuqinisekisa Uzinzo Olulungileyo Lweekhemikhali

Iglasi ye-e imelana kakuhle namanzi, ii-asidi (ngaphandle kwe-hydrofluoric kunye ne-hot phosphoric acid), kunye neekhemikhali.

• Umphezulu ongasebenziyo:Inethiwekhi ye-Si-O-Si exineneyo inomsebenzi omncinci kakhulu weekhemikhali kwaye ayisebenzi lula ngamanzi okanye ii-H+ ions. Ke ngoko, ukumelana kwayo ne-hydrolysis kunye nokumelana ne-asidi kulungile kakhulu. Oku kuqinisekisa ukuba izinto ezidityanisiweyo eziqiniswe yi-E-glass fiber zigcina ukusebenza kwazo ixesha elide, nokuba zikwimeko enzima.

4. Igalelo kuMandla aphezulu oomatshini

Nangona amandla okugqibelaiifayibha zeglasiikwachatshazelwa kakhulu zizinto ezifana neziphene zomphezulu kunye nee-micro-cracks, amandla azo ethiyori asuka kakhulu kwiibhondi ze-Si-O covalent eziqinileyo kunye nesakhiwo senethiwekhi esinemilinganiselo emithathu.

• Amandla eBond aphezulu:Amandla e-bond ye-Si-O bond aphezulu kakhulu, nto leyo eyenza i-skeleton yeglasi ngokwayo ibe namandla kakhulu, inika i-fiber amandla aphezulu okuxinana kunye ne-elastic modulus.

5. Ukunika iipropati ezifanelekileyo zobushushu

• I-Coefficient yokwandisa ubushushu obuphantsi:I-silica ngokwayo ine-coefficient ephantsi kakhulu yokwandiswa kobushushu. Ngenxa yokuba isebenza njengesiseko esiphambili, i-E-glass ikwanayo ne-coefficient ephantsi yokwandiswa kobushushu. Oku kuthetha ukuba inozinzo oluhle lobukhulu ngexesha lotshintsho lobushushu kwaye ayinakwenzeka ukuba ivelise uxinzelelo olugqithisileyo ngenxa yokwanda kobushushu kunye nokucutheka.
• Indawo yokuthambisa ephezulu:Iqondo lokunyibilika kweSilica liphezulu kakhulu (malunga ne-1723∘C). Nangona ukongezwa kwezinye ii-oxides ezijikelezayo kunciphisa ubushushu bokunyibilika kokugqibela kwe-E-glass, i-SiO2 core yayo isaqinisekisa ukuba iglasi inendawo yokuthambisa ephezulu ngokwaneleyo kunye nozinzo lobushushu ukuhlangabezana neemfuno zezicelo ezininzi.

Kwindlela eqhelekileyoIglasi ye-elektronikiUkwakheka kwayo, umxholo we-silica udla ngokuba yi-52%−56% (ngokobunzima), nto leyo eyenza ukuba ibe yeyona nxalenye inkulu ye-oxide. Ichaza iimpawu ezisisiseko zeglasi.

Ulwahlulo lweMisebenzi phakathi kweeOxides kwi-E-Glass:

• I-SiO2(I-Silica): Umzimba oyintloko; inika uzinzo kwisakhiwo, ubushushu bombane, ukuqina kweekhemikhali, kunye namandla.
• I-Al2O3(I-Alumina): Inethiwekhi yoNcedo yangaphambili kunye ne-stabilizer; kwandisa uzinzo lweekhemikhali, amandla oomatshini, kwaye kunciphisa ukuthambekela kokukhupha i-vitrification.
• B2​O3​(iBoron Oxide): I-Flux kunye nohlengahlengiso lwepropathi; kunciphisa kakhulu ubushushu bokunyibilika (ukonga amandla) ngelixa kuphucula iimpawu zobushushu nezombane.
• I-CaO/MgO(I-Calcium Oxide/i-Magnesium Oxide): I-Flux kunye ne-stabilizer; inceda ekunyibilikiseni kwaye ilungisa ukuqina kweekhemikhali kunye neempawu zokukhupha amandla.