Indima engundoqo yeSilica (SiO2) kwi-E-Glass

I-Silica (SiO2) idlala indima ebaluleke kakhulu kwaye isisisekoIglasi ye-E, ukwenza ilitye elisezantsi kuzo zonke iimpawu zayo ezintle. Ngamafutshane, i-silica yi "network yangaphambili" okanye "skeleton" ye-E-glass. Umsebenzi wayo ungahlelwa ngokuthe ngqo kwezi ndawo zilandelayo:

1. Ukwenziwa kweGlass Network Structure (Undoqo woMsebenzi)

Lo ngowona msebenzi usisiseko wesilica. I-silica yioksidi eyenza iglasi ngokwayo. I-SiO4 ye-tetrahedra yayo idityaniswe enye kwenye ngokudibanisa iiathom ze-oksijini, zenza i-network eqhubekayo, eyomeleleyo, kunye ne-random-dimensional network structure.

• Isifaniso:Oku kufana namathambo entsimbi endlu esakhiwayo. I-Silica ibonelela ngesakhelo esiphambili kwisakhiwo seglasi yonke, ngelixa ezinye izinto (ezifana ne-calcium oxide, i-aluminium oxide, i-boron oxide, njl.) zizinto ezizalisa okanye ziguqule le skeleton ukulungelelanisa ukusebenza.
• Ngaphandle kwale silica skeleton, into ezinzileyo yeglasi ayinakwenziwa.

2. Ubonelelo lweNtsebenzo egqwesileyo yoMbane woMbane

• Ukuxhathisa okuPhezulu koMbane:I-silica ngokwayo inokuhamba kwe-ion ephantsi kakhulu, kwaye i-chemical bond (i-Si-O bond) izinzile kwaye yomelele, okwenza kube nzima ukwenza i-ionize. Inethiwekhi eqhubekayo eyenzayo ithintela kakhulu ukuhamba kweentlawulo zombane, inika i-E-glass ephezulu kakhulu yokumelana nomthamo kunye nokumelana nomphezulu.
• Ilahleko yeDielectric ephantsi kunye neLahleko yeDielectric ephantsi:Iimpawu ze-dielectric ze-E-glass zizinzile kakhulu kwii-frequencies eziphezulu kunye namaqondo okushisa aphezulu. Oku kubangelwa ikakhulu kwi-symmetry kunye nokuzinza kwe-SiO2, i-network structure, ebangela ukuba iqondo eliphantsi le-polarization kunye nokulahlekelwa kwamandla amancinci (ukuguqulwa kubushushu) kwintsimi yombane ephezulu. Oku kwenza kube yinto efanelekileyo yokusetyenziswa njengento yokomeleza kwiibhodi zeesekethe ze-elektroniki (PCBs) kunye ne-insulators high-voltage.

3. Ukuqinisekisa Uzinzo oluLungileyo lweMichiza

I-E-glass ibonisa ukuxhathisa okugqwesileyo emanzini, i-acids (ngaphandle kwe-hydrofluoric kunye ne-hot phosphoric acid), kunye neekhemikhali.

• Umphezulu Ongangeni:Inethiwekhi ye-Si-O-Si exineneyo inomsebenzi wemichiza ephantsi kakhulu kwaye ayisebenzi ngokulula ngamanzi okanye i-H + ion. Ke ngoko, ukuxhathisa kwayo nge-hydrolysis kunye nokuxhathisa kweasidi kulungile kakhulu. Oku kuqinisekisa ukuba izinto ezidibeneyo eziqiniswe yi-E-glass fiber zigcina ukusebenza kwazo kwixesha elide, nakwiindawo ezinzima.

4. Igalelo kuMandla oomatshini aPhezulu

Nangona amandla okugqibela eimicu yeglasiikwaphenjelelwa kakhulu yimiba efana neziphene zomphezulu kunye nokuqhekeka kwe-micro, amandla abo athiyori ubukhulu becala avela kwiibhondi eziqinileyo ze-Si-O kunye nesakhiwo sothungelwano oluntathu.

• I-High Bond Energy:Amandla ebhondi yebhondi ye-Si-O iphezulu kakhulu, nto leyo eyenza ukuba i-glass skeleton ngokwayo ibe yomelele kakhulu, inika ifayibha ngamandla aphezulu kunye ne-elastic modulus.

5. Ukunikezelwa kweePropati eziLungileyo zeThermal

• I-Coefficient yoKwandiswa kweThermal ePhantsi:I-silica ngokwayo ine-coefficient ephantsi kakhulu yokwandiswa kwe-thermal. Ngenxa yokuba isebenza njengowona mathambo aphambili, i-E-glass nayo inomlinganiselo ophantsi wokwandiswa kwe-thermal. Oku kuthetha ukuba inozinzo olufanelekileyo lwe-dimensional ngexesha lokutshintsha kweqondo lokushisa kwaye ayinakwenzeka ukuba ivelise uxinzelelo olugqithisileyo ngenxa yokwanda kwe-thermal kunye nokucutha.
• Indawo yokuThobela ePhezulu:Indawo yokunyibilika yeSilica iphezulu kakhulu (malunga ne-1723∘C). Nangona ukongezwa kwezinye iioksidi eziguquguqukayo kwehlisa ubushushu bokugqibela bokunyibilika kwe-E-glass, iSiO2 ​engundoqo isaqinisekisa ukuba iglasi inendawo yokuthambisa ephezulu ngokwaneleyo kunye nokuzinza kwe-thermal ukuhlangabezana neemfuno zezicelo ezininzi.

KwisiqheloIglasi ye-Eukubunjwa, umxholo we-silica udla ngokuba yi-52% -56% (ngobunzima), nto leyo eyenza ibe yeyona nxalenye inkulu ye-oxide. Ichaza iimpawu ezisisiseko zeglasi.

Ulwahlulo lwaBasebenzi phakathi kweeOxides kwi-E-Glass:

• SiO2(Silika): Amathambo angundoqo; inikeza uzinzo lwesakhiwo, ukugquma kombane, ukuqina kweekhemikhali, kunye namandla.
• Al2O3(Alumina): Inethiwekhi encedisayo yangaphambili kunye ne-stabilizer; kwandisa ukuzinza kweekhemikhali, amandla omatshini, kunye nokunciphisa ukuthambekela kwe-devitrification.
• B2O3(Boron oxide): I-Flux kunye nesilungisi sepropathi; kunciphisa kakhulu ukushisa okunyibilikayo (ukugcina amandla) ngelixa uphucula iimpawu zokushisa kunye nombane.
• CaO/MgO(iCalcium oxide/Magnesium oxide): I-Flux kunye ne-stabilizer; inceda ekunyibilikeni kunye nokulungelelanisa ukuqina kweekhemikhali kunye neempawu ze-devitrification.