Lub ntsiab muaj pes tsawg leeg ntawm iav yog quartz (silica). Quartz muaj cov dej tsis kam ua haujlwm zoo (uas yog, nws tsis yooj yim reacts nrog dej). Txawm li cas los xij, vim muaj lub siab melting point (txog 2000 ° C) thiab siab tus nqi ntawm high-purity silica, nws tsis haum rau siv ntau lawm; Ntxiv Network Modifiers tuaj yeem txo qhov melting taw tes ntawm lub khob thiab qis tus nqi. Hom network modifiers yog sodium, calcium, thiab lwm yam; Tab sis cov modern modifiers yuav sib pauv hydrogen ions hauv dej, txo cov dej tsis kam ntawm cov iav; Ntxiv rau cov neeg Boron thiab txhuas tuaj yeem ntxiv dag zog rau cov iav qauv, lub suab kub tau nce, tab sis cov dej tsis kam txhim kho.
Cov ntaub ntawv kaw ntim khoom tuaj yeem tiv thaiv cov yeeb tshuaj ncaj qha, thiab lawv qhov zoo yuav cuam tshuam rau kev nyab xeeb thiab kev ruaj khov ntawm cov tshuaj. Rau cov tshuaj ntsuab iav, ib qho ntawm cov qauv tseem ceeb rau cov dej tsis kam: cov kev pheej hmoo ntawm cov tshuaj tiv thaiv nrog tshuaj, thiab ntau dua iav zoo.
Raws li cov dej tsis kam los ntawm tsawg rau siab, tshuaj ntsuab iav tuaj yeem faib ua: dej qab zib iav, qis borosilicate iav, qis borosilicate iav thiab nruab nrab borosilicate iav. Hauv cov kws tshuaj, cov iav tau cais rau hauv chav kawm I, Chav Kawm Hoob II, thiab Chav III. Chav Kawm Kuv Zoo-Zoo Borosilicate iav yog tsim nyog rau kev nqus tshuaj tshuaj, thiab chav kawm siv tshuaj, thiab tsis haum rau kev txhaj tshuaj.
Tam sim no, qis borosilicate iav thiab dej qab-kua qaub iav tseem siv hauv cov iav hauv tsev. Raws li cov "kev tshawb nrhiav hauv kev nqis peev ntawm Tuam Tshoj cov iav tsom iav hauv tsev (2019)", 2019% Tsuas yog suav rau 7-8%. Txawm li cas los xij, txij li Tebchaws Meskas, Tebchaws Europe, thiab Russia txhua txoj kev npaj ua kom txhua yam kev txhaj tshuaj npaj rau cov iav nruab nrab, nruab nrab ntawm cov khoom lag luam nruab nrab hauv kev lag luam txawv teb chaws.
Ntxiv rau kev faib tawm raws li cov dej tsis kam, raws li cov txheej txheem sib txawv, tshuaj pleev xim tau muab faib ua: pwm fwj thiab tswj fwj. Lub raj mis tuaj yeem ua kom pom cov kua iav rau hauv pwm kom muaj tshuaj tua hluav taws xob; Thaum tswj lub raj mis yog thawj zaug ua cov iav ua kua rau hauv lub khob raj, thiab tom qab ntawd txiav lub khob raj ua kom lub raj mis tshuaj
Raws li kev soj ntsuam daim ntawv tshaj tawm ntawm kev lag luam ntawm iav ntim ntim rau kev txhaj tshuaj rau xyoo 2019, ntawm tag nrho cov khoom lag luam thiab yog ib qho ntawm cov iav tseem ceeb ntawm cov iav. Nyob rau hauv xyoo tsis ntev los no, kev muag khoom hauv Suav teb tau txuas ntxiv ntxiv, tsav qhov kev xav txhaj tshuaj tiv thaiv kev yuav tsav tsheb hauv kev ua lag luam iav.
Lub Sijhawm Post: Nov-11-2021