Borosilicate iavyog ib hom iav khoom uas muaj cov ntsiab lus boron ntau dua, sawv cev los ntawm cov khoom sib txawv los ntawm ntau lub tuam txhab.Ntawm lawv, Schott Glass's Borofloat33® yog ib qho zoo-paub silica iav, nrog kwv yees li 80% silicon dioxide thiab 13% boron oxide.Dhau li ntawm Schott's Borofloat33®, muaj lwm yam khoom siv iav boron hauv khw, xws li Corning's Pyrex (7740), Eagle series, Duran®, AF32, thiab lwm yam.
Raws li cov hlau oxides sib txawv,high-borate silica iavtuaj yeem muab faib ua ob pawg: alkali-muaj cov silica siab-borate (xws li, Pyrex, Boroflat33®, Supremax®, Duran®) thiab alkali-dawb high-borate silica (xws li Eagle series, AF32).Raws li qhov sib txawv coefficients ntawm thermal expansion, alkali-muaj high-borate silica iav tuaj yeem muab faib ua peb hom: 2.6, 3.3, thiab 4.0.Ntawm lawv, cov iav nrog lub thermal expansion coefficient ntawm 2.6 muaj qhov qis coefficient thiab zoo dua qhov kub thiab txias, ua rau nws haum raws li ib feem hloov rau.borosilicate iav.Ntawm qhov tod tes, cov iav nrog thermal expansion coefficient ntawm 4.0 feem ntau yog siv rau kev siv hluav taws kub thiab muaj hluav taws kub-resistant zog tom qab toughening.Cov hom siv feem ntau yog ib qho nrog thermal expansion coefficient ntawm 3.3.
| Parameter | 3.3 Borosilicate iav | Soda txiv qaub iav |
| Cov ntsiab lus Silicon | 80% lossis ntau dua | 70% |
| Strin Point | 520 ℃ | 280 ℃ |
| Annealing Point | 560 ℃ | 500 ℃ |
| Softening Point | 820 ℃ | 580 ℃ |
| Refractive Index | 1.47 ib | 1.5 |
| Transparency (2 hli) | 92% | 90% |
| Elastic Modulus | 76 KNm^- 2 | 72 KNmmm^-2 |
| Stress-Optical Coefficient | 2.99*10^-7 cm^2/kgf | 2.44 * 10^-7 cm^2/kgf |
| Ua Haujlwm Kub (104dpas) | 1220 ℃ | 680 ℃ |
| Linear Expansion Coefficient (20-300 ℃) | (3.3-3.5) × 10^-6 K^-1 | (7.6～9.0) × 10^-6 K^-1 |
| Qhov ceev (20 ℃) | 2.23 g x cm^-3 | 2.51 g x cm^-3 |
| Thermal conductivity | 1.256 W / (m•K) | 0.963 W / (m•K) |
| Kev tiv thaiv dej (ISO 719) | Qib 1 | Qib 2 |
| Acid Resistance (ISO 195) | Qib 1 | Qib 2 |
| Alkali Resistance (ISO 695) | Qib 2 | Qib 2 |
Hauv cov ntsiab lus, piv rau dej qab zib lime iav,boroslicate iavmuaj zoo thermal stability, tshuaj stability, lub teeb transmittance, thiab hluav taws xob khoom.Yog li ntawd, nws muaj cov txiaj ntsig zoo xws li kev tiv thaiv tshuaj lom neeg, thermal poob siab, kev ua haujlwm zoo heev, kev ua haujlwm siab, thiab siab hardness.Yog li ntawd, nws tseem hu uakub-resistant iav, kub-resistant shock iav, high-temperature-resistant iav, thiab feem ntau yog siv los ua cov iav tshwj xeeb hluav taws-resistant.Nws yog dav siv hauv kev lag luam xws li hnub ci zog, tshuaj, tshuaj ntim khoom, optoelectronics, thiab kho kom zoo nkauj kos duab.