Zinc oxide. Properties thiab cov kev siv

Zinc oxide (lwm lub npe - zinc oxide) - yog ib tug amphoteric oxide, crystalline tsis muaj kob hmoov daj li gradual cua kub thiab sublimating ntawm 1800 degrees. Insoluble nyob rau hauv cov dej. Cov oxidation ntawm zinc nyob rau hauv lub tebchaw - 2. Cov tshuaj mis ZnO. Qhov no cov ntaub ntawv uas yog ib qho tseem ceeb rau tib neeg. Nws muaj ib tug multifaceted ntxim rau cov tib neeg lub cev.

Zinc oxide: Physical zog

1. Lub thermal conductivity yog 54 W / (m * K).
2. Nws yog ib tug semiconductor nrog ib tug qhab dav ntawm 3.3 eV.

Tshuaj thaj chaw ntawm zinc oxide

1. Nws reacts nrog acids. Nyob rau hauv no rau ntsev.
2. Reacts nrog alkalis tsim tetra-, peb thiab geksagidroksitsinkatov.
3. Qhov no cov ntaub ntawv uas twb yaj nyob rau hauv aqueous ammonia tshuaj. Qhov no tas ib complex Ammoniate.
4. Thaum alloying nrog alkali oxides thiab zinc oxide ntaub ntawv ib tug zincate.
5. Thaum alloying nrog silicon oxide thiab boron oxide, zinc silicates, thiab cov ntaub ntawv glassy collars.

Raws li npaj zinc oxide (ZnO)

Zinc oxide yuav tau nyob rau hauv ob peb txoj kev:

• Ntuj mineral zincite;
• los ntawm burning zinc vapor (ZN) nyob rau hauv cov pa (O) - qhov thiaj li hu ua "Fabkis txheej txheem";
• los ntawm thermal decomposition ntawm cov hauv qab no lub tebchaw: hydroxide ZN (OH) 2, zinc acetate ZN (CH3COO) 2 nitrate ZN (NO3), carbonate ZnCO3;
• nyob rau hauv oxidative firing ZnS (zinc sulfide);
• thaum lub hydrothermal synthesis;
• los ntawm extraction ntawm sludges thiab dusts smelters. Ntawm kev tseem ceeb yog cov nroj tsuag uas paub txhij txhua nyob rau hauv seem hlau, muaj ib tug tseem ceeb kev faib ua feem ntawm galvanized hlau.

zinc oxide

Zinc Oxide no yog siv nyob rau hauv cov roj hmab kev lag luam, daim ntawv, ib co yas, roj hmab khoom, dag tawv, hluav taws xob cables, iav, ceramics, tshuaj pleev ib ce (tanning cream, kev zoo nkauj kev kho mob) thiab perfumes. Nws yog siv raws li ib tug activator rau lub vulcanization ntawm ntau yam rubbers catalyst synthesis organic teeb meem - methanol, chloroprene rubbers lub vulcanizing neeg sawv cev, ib tug xim thiab muab tub lim nyob rau hauv qhov. Yav tas los zinc oxide twb yuav tsum tau raws li ib tug dawb xim nyob rau hauv cov xim tsev thiab enamels, tab sis tam sim no nws yog kiag li raug ntiab tawm TiO2 (titanium dioxide yog uas tsis yog-tshuaj lom). Thoob plaws zinc oxide thiab tau txais nyob rau hauv cov xim muaj hlau, cov log tsheb thiab roj refining industries.

Thoob plaws thiab zinc oxide nyob rau hauv cov tshuaj thiab muag tshuaj (tshuaj "Zinc Tshuaj pleev", "Sudocrem", "Muab tshuaj txhuam Lassara"). Nws yog siv raws li ib feem ntawm antiseptic tshuaj pleev, nyob rau hauv daim ntawv ntawm cov hmoov. Nyob rau hauv kev xyaum nws yog siv los tsim ib tug bactericidal thiab qab nthab qhwv nyob rau hauv cov tsev kho mob, nws tus kheej-tu chaw. Nrog zinc oxide ua tshuaj txhuam hniav thiab cements rau tiv thaiv kev kho hniav. Yav tas los nws siv nyob rau hauv ib tug muaj scale rau lub photocatalytic purification ntawm cov dej.

Tsis tas li ntawd nyob rau hauv saib xyuas yog ib yam khoom uas siv nyob rau hauv qhov siv thiab ua cov xim tsev thiab iav raws li nyob rau hauv cov kua iav, raws li ib feem ntawm ib tug xeb remover thiab raws li ib tug additive rau tsiaj pub. Nyob rau hauv tas li ntawd, cov hmoov ntawm lub substance yog ib tug pheej khoom raws li ib tug ua hauj lwm nruab nrab rau cov hmoov lasers. Nyob rau lub hauv paus ntawm zinc oxide tsim Lub LEDs xiav xim. Ib txhia nanostructures (e.g., nyias zaj duab xis) raws li nyob rau hauv no yam khoom uas yuav siv tau raws li lom los yog gas-sensitive sensors.

Yuav ua li cas yog tej yam nyob rau hauv tib zinc oxide?

Qhov no tshuaj compound muaj tsawg toxicity. Nyob rau hauv cov huab cua ua hauj lwm thaj chaw MPC yuav tsum tsis muaj ntau tshaj li 6 miligram ib cubic Meter. Hmoov av ntawm zinc oxide peev xwm yuav tsim raws li qhov firing dag cov khoom. Ex ua hauj lwm nrog zinc oxide yuav tsum tshuaj tsis nkag rau hauv qhov muag. Tshuaj nrog zinc oxide yog pom zoo tsuas yog raws li qhia los ntawm tus kws kho mob.