Lub ntsiab muaj pes tsawg leeg ntawm iav yog quartz (silica). Quartz muaj cov dej tsis zoo (uas yog, nws tsis tshua muaj dej). Txawm li cas los xij, vim qhov kub siab melting point (kwv yees li 2000 ° C) thiab tus nqi siab ntawm high-purity silica, nws tsis haum rau kev siv ntau lawm; Ntxiv cov kev hloov kho network tuaj yeem txo qhov melting point ntawm iav thiab txo tus nqi. Cov kev hloov pauv hauv network feem ntau yog sodium, calcium, thiab lwm yam .; tab sis lub network modifiers yuav pauv hydrogen ions hauv dej, txo cov dej tsis kam ntawm cov iav; Ntxiv boron thiab Aluminium tuaj yeem ntxiv dag zog rau cov qauv iav, qhov kub thiab txias tau nce, tab sis cov dej ua haujlwm tau zoo dua qub.
Cov ntaub ntawv ntim tshuaj tuaj yeem tiv tauj ncaj qha rau cov tshuaj, thiab lawv qhov zoo yuav cuam tshuam rau kev nyab xeeb thiab ruaj khov ntawm cov tshuaj. Rau cov iav tshuaj, ib qho ntawm cov qauv tseem ceeb rau nws qhov zoo yog dej tsis kam: qhov siab dua cov dej tsis kam, qhov kev pheej hmoo ntawm cov tshuaj tiv thaiv qis dua, thiab cov iav zoo dua.
Raws li cov dej tsis kam los ntawm qhov qis mus rau qhov siab, cov iav tshuaj tuaj yeem muab faib ua: iav dej qab zib, iav borosilicate iav thiab nruab nrab borosilicate iav. Hauv Pharmacopoeia, iav tau muab faib ua Class I, Class II, thiab Class III. Class I high-quality borosilicate iav yog tsim rau ntim cov tshuaj txhaj tshuaj, thiab Class III soda txiv qaub iav yog siv rau ntim cov kua hauv qhov ncauj thiab cov tshuaj, thiab tsis haum rau kev txhaj tshuaj.
Yav dhau los, tsawg borosilicate iav thiab dej qab zib-txiv qaub iav tseem siv nyob rau hauv domestic kws tshuaj iav. Raws li "Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Tuam Tshoj Cov Tshuaj Kho Tshuaj Kho Mob (2019 Edition)", kev siv borosilicate iav hauv tsev tshuaj iav hauv xyoo 2018 tsuas yog suav txog 7-8%. Txawm li cas los xij, txij li Tebchaws Meskas, Tebchaws Europe, Nyiv, thiab Russia txhua tus tswj hwm kev siv cov iav nruab nrab borosilicate rau txhua qhov kev txhaj tshuaj thiab kev npaj tshuaj lom neeg, cov iav borosilicate nruab nrab tau siv dav hauv kev lag luam tshuaj txawv teb chaws.
Ntxiv rau kev faib tawm raws li dej tsis kam, raws li cov txheej txheem tsim khoom sib txawv, cov iav tshuaj tau muab faib rau hauv lub raj mis molded thiab tswj fwj. Lub raj mis molded yog ncaj qha txhaj cov iav kua rau hauv pwm los ua lub raj mis tshuaj; thaum lub raj mis tswj yog thawj zaug ua cov kua iav rau hauv lub khob raj, thiab tom qab ntawd txiav lub iav raj los ua lub raj mis tshuaj.
Raws li Kev Tshawb Fawb Kev Tshawb Fawb Kev Lag Luam ntawm Cov Khoom Siv Khob Siv rau Kev Txhaj Tshuaj hauv xyoo 2019, cov tshuaj txhaj tshuaj suav nrog 55% ntawm tag nrho cov tshuaj iav thiab yog ib qho ntawm cov khoom tseem ceeb ntawm cov tshuaj iav. Nyob rau hauv xyoo tas los no, kev muag khoom ntawm kev txhaj tshuaj hauv Suav teb tau nce ntxiv, ua rau qhov kev thov rau cov tshuaj txhaj tshuaj txuas ntxiv nce ntxiv, thiab cov kev hloov pauv ntawm cov kev cai cuam tshuam txog kev txhaj tshuaj yuav ua rau muaj kev hloov pauv hauv khw muag tshuaj iav.
Post lub sij hawm: Nov-19-2021