Iav borosilicate siab yog ib hom iav tshwj xeeb uas paub txog nws cov khoom zoo heev, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm kev tiv taus cua sov thiab lub zog kho tshuab. Nws suav hais tias zoo dua li iav ib txwm muaj hauv ntau yam kev siv, los ntawm cov khoom siv hauv chaw kuaj mob mus rau cov khoom siv ua noj zoo. Hauv qab no, peb nkag mus tob dua rau hauv qhov sib txawv tseem ceeb ntawm iav borosilicate siab thiab iav ib txwm muaj, piav qhia vim li cas nws yog cov khoom siv nyiam hauv qee yam kev lag luam.
1. Cov Coefficient ntawm Thermal Expansion
Tus coefficient ntawm thermal expansion (CTE) yog qhov ntsuas ntawm seb cov khoom siv nthuav dav lossis cog lus npaum li cas thaum nws qhov kub hloov pauv. Cov yam ntxwv no tseem ceeb heev rau cov ntawv thov uas cov khoom siv raug rau qhov kub hloov pauv ntau heev.
- Cov Khob Borosilicate SiabIb qho ntawm cov yam ntxwv tseem ceeb ntawm cov iav borosilicate siab yog nws cov coefficient qis ntawm kev nthuav dav thermal. Nws yog li ib feem peb ntawm cov iav ib txwm muaj, uas txhais tau tias nws nthuav dav thiab cog lus tsawg dua thaum raug rau qhov kub hloov pauv. Qhov no txo qhov kev pheej hmoo ntawm kev tawg lossis tawg vim yog kev ntxhov siab thermal. Yog li ntawd, cov iav borosilicate siab yog qhov tiv taus kev poob siab thermal, ua rau nws zoo tagnrho rau cov ntawv thov xws li cov khob iav hauv chav kuaj, cov lauj kaub ua noj, thiab cov beakers uas feem ntau muaj kev hloov pauv kub sai.
- Iav Ib Txwm: Cov iav ib txwm muaj cov coefficient ntawm thermal expansion siab dua. Yog li ntawd, nws yooj yim dua rau kev ntxhov siab los ntawm kev hloov pauv kub sai. Piv txwv li, thaum cov iav ib txwm raug cua sov lossis txias sai, cov khoom siv yuav nthuav dav lossis cog lus ntau, tsim kev ntxhov siab uas tuaj yeem ua rau tawg lossis txawm tias ua tsis tiav. Qhov no yog vim li cas cov iav ib txwm feem ntau tsis pom zoo rau cov ntawv thov uas qhov kev tiv thaiv thermal shock tseem ceeb heev.
2. Cov Cheebtsam Tseem Ceeb
Cov khoom sib xyaw ua ke ntawm iav ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws cov khoom siv lub cev thiab tshuaj lom neeg. Cov iav borosilicate siab yog tsim los muab lub zog zoo tshaj plaws thiab tiv taus kev ntxhov siab thermal thiab tshuaj lom neeg.
- Cov Khob Borosilicate SiabCov iav no feem ntau yog ua los ntawm boron trioxide (txog li 14%) thiab silicon dioxide (txog li 80%). Kev muaj boron ua rau lub iav tiv taus kev poob siab thermal, vim tias cov boron atoms pab txo qhov kev nthuav dav ntawm lub iav thaum lub sijhawm cua sov thiab txias. Tsis tas li ntawd, cov tshuaj lom neeg ntawm cov iav borosilicate ua rau nws tiv taus ntau yam tshuaj, kua qaub, thiab alkalis, ua rau nws tsim nyog siv rau hauv chaw kuaj mob thiab kev lag luam uas raug cov tshuaj lom neeg hnyav.
- Iav Ib TxwmCov iav zoo tib yam feem ntau yog ua los ntawm sodium calcium silicate, nrog silica (SiO2) ua lub ntsiab tivthaiv. Cov khoom sib xyaw ntawm cov iav zoo tib yam tsis muaj boron, uas txwv nws lub peev xwm los tiv taus kev ntxhov siab thermal thiab cov tshuaj lom neeg hnyav. Txawm hais tias nws tsim nyog rau cov ntawv thov xws li qhov rais thiab lub raj mis, nws tsis muaj cov khoom siv siab heev uas xav tau rau kev siv ntau dua.
3. Lub zog tensile
Lub zog tensile yog hais txog lub peev xwm ntawm cov khoom siv los tiv taus lub zog rub lossis ncab. Cov tsom iav uas muaj lub zog tensile siab dua tuaj yeem tiv taus lub zog ntau dua ua ntej lawv tawg lossis tawg.
- Cov Khob Borosilicate Siab: Cov iav borosilicate siab muaj lub zog tensile siab dua li cov iav ib txwm. Qhov no txhais tau tias nws tuaj yeem tiv taus kev ntxhov siab ntau dua yam tsis muaj kev tawg. Thaum cov iav borosilicate siab tawg, nws feem ntau tawg ua tej daim loj dua, zoo li ib lub thawv es tsis txhob tawg ua tej daim ntse, txaus ntshai. Qhov no ua rau nws muaj kev nyab xeeb dua rau kev tuav hauv ib puag ncig uas kev tawg yuav ua rau muaj kev pheej hmoo.
- Iav Ib Txwm: Cov iav ib txwm muaj lub zog tensile qis dua, ua rau nws yooj yim tawg thaum muaj kev ntxhov siab. Thaum nws tawg, cov iav ib txwm feem ntau yuav tawg ua tej daim me me, jagged, uas tuaj yeem tsim kev phom sij rau kev nyab xeeb. Qhov no yog ib qho laj thawj vim li cas cov iav ib txwm feem ntau tsis txhob siv rau hauv cov ntawv thov uas muaj kev ntxhov siab lossis kev cuam tshuam loj.
4. Kev Tiv Thaiv Kev Kub Ntxhov
Kev tiv taus kev poob siab kub yog lub peev xwm ntawm cov khoom siv los nyiaj dhau qhov kub hloov pauv sai yam tsis tawg lossis tawg. Cov yam ntxwv no tseem ceeb heev rau cov khoom siv hauv kev ua noj ua haus, chaw kuaj mob, thiab qee yam txheej txheem kev lag luam.
- Cov Khob Borosilicate SiabIb qho ntawm cov txiaj ntsig tseem ceeb ntawm cov iav borosilicate siab yog nws qhov kev tiv taus zoo heev rau kev poob siab thermal. Nws tuaj yeem tiv taus qhov kub hloov pauv sai thiab sai yam tsis tawg. Piv txwv li, nws tuaj yeem nyiaj ntxiv dej npau (100 ° C) rau hauv lub khob txawm tias thaum nws muab tso rau hauv qhov chaw khov (-30 ° C). Qhov no ua rau nws yog qhov kev xaiv zoo rau cov khoom siv ua noj (xws li cov tais diav iav ci), cov khoom siv hauv chaw kuaj mob, thiab lwm yam kev siv uas qhov kub hloov pauv ntau.
- Iav Ib Txwm: Cov iav ib txwm muaj feem yuav raug cua sov ntau dua. Thaum raug rau qhov kub hloov pauv sai sai, nws yuav tawg lossis tawg vim yog qhov nthuav dav lossis kev sib cog lus ntawm cov khoom. Qhov no yog vim li cas cov thawv iav ib txwm yuav tsum tsis txhob raug dej npau lossis muab tso ncaj qha los ntawm qhov chaw txias rau hauv qhov kub.
Cov ntawv thov ntawm High Borosilicate Iav
Vim nws cov khoom zoo dua, cov iav borosilicate siab siv rau ntau yam kev siv uas xav tau kev ua haujlwm siab, kev nyab xeeb, thiab kev ua haujlwm ntev:
- Cov Khob Iav Hauv Chav Kuaj MobVim nws tiv taus kev kub hnyiab thiab tshuaj lom neeg xeb, iav borosilicate siab feem ntau siv hauv chaw soj nstuam rau beakers, flasks, raj kuaj, thiab lwm yam khoom siv uas yuav tsum tau tiv taus ob qho tib si kub thiab tshuaj lom neeg.
- Cov khoom siv ua noj: Cov iav borosilicate siab siv ntau zuj zus hauv cov khoom siv hauv chav ua noj xws li cov tais diav ci, khob ntsuas, thiab cov khoom siv ua noj, qhov twg nws tiv taus cua sov thiab thermal shock yog qhov zoo tseem ceeb.
- Cov Cuab Yeej Siv Kho Qhov Muag: Qhov pom tseeb ntawm cov iav borosilicate ua rau nws haum rau cov iav thiab lwm yam khoom siv kho qhov muag.
- Teeb pom kev zoo thiab khoom siv hluav taws xob: Cov iav borosilicate siab siv rau hauv qee yam teeb pom kev zoo thiab cov khoom siv hluav taws xob, qhov twg nws cov khoom siv ruaj khov thiab kev tiv taus cua sov yog qhov tseem ceeb.
Xaus lus
Iav borosilicate siab yog ib yam khoom siv siab heev uas zoo heev rau cov ntawv thov uas xav tau kev tiv taus cua sov, kev ntxhov siab ntawm lub tshuab, thiab kev raug tshuaj lom neeg. Nws qhov kev nthuav dav thermal qis, lub zog tensile siab, thiab kev tiv taus thermal shock ua rau nws zoo dua li iav ib txwm rau cov ntawv thov uas nyuaj hauv cov teb xws li kev ua haujlwm hauv chaw kuaj mob, ua noj ua haus, thiab cov txheej txheem kev lag luam. Txawm hais tias iav ib txwm yog qhov tsim nyog rau cov hom phiaj dav dav, cov iav borosilicate siab cov yam ntxwv tshwj xeeb ua kom nws tseem yog cov khoom siv xaiv hauv cov ntawv thov tshwj xeeb uas kev ua tau zoo thiab kev nyab xeeb yog qhov tseem ceeb.
Lub sijhawm tshaj tawm: Lub Kaum Hli-29-2024