Sodium silicate

Silicates (ka eray laatiin ah "silex" loo tarjumay sida "dhagax") waxaa lagu magacaabaa H2SiO3 cusbo metasilicic. Tusaale ahaan, silicate sodium, kuwaas oo formula kiimikada, waxaa qoran sida soo socota: Na2SiO3. waa magac kale oo cusbo - metasilicate sodium. mass gaws maalkii uyeelaysaan kuwo 122,06 g / mol. Imaanshaha - kiristaalo cad Doolaal isagoo galyadeena cagaaran. Mugga waa loo siman yahay si 2.4 g / cm3. Khayroon daahirnimo lagu gartaa a index Refractive, taas oo u dhiganta 1,52. barta barafku - oo lagu daray 1088 ° C. maalkiisu waa milma biyaha iyo beelaya in khamriga. The xal aqueous lagu milo wuxuu leeyahay sifooyin u gaar ah, waayo, kaasu hoostooda ku ukunta cusub ilaa lagu kaydin karaa ilaa sagaal bilood heerkulka qolka. silicate sodium waa mid deggan warbaahinta dhexdhexaad iyo cawaaqib xumadoodu, iyo anion acid SiO3- sameynayso la siifilisku H + si ay u sameeyaan silicic acid.

Silica (sidoo kale loo yaqaan silica ama anhydride silicic) waa xarunta ugu xasilloon oo dhacdaa si dabiici ah ee foomka of quartz. Waxa la xisaabay in 12% ka mid ah tiro ka mid ah dhulka udubyadiisa. Silica wasakheeyay nijaasta waa ciid caadi ah, taas oo la aasaasay by burburinta dhagaxa. Under tallaabada ee alkali on reaction kiimikada silica: NaOH + SiO2 → Na2SiO3 + H2O. Sidaas darteed, a cusbo acid silicic - silicate sodium. Hydrolysis oo cusbo ah (kala daatay biyo) socota nidaamka: 2Na2SiO3 + H2O → Na2SiO5 + 2NaOH , iyo sodium dvumetasilikat sameeyay. Iyada oo hoos u dhac in fiirsashada of xalka, hydrolysis dhacdaa ka daran. In 1N. xal hydrolyzed of 14% cusbo in 0.1N. - 28% in 0,001% - 32%. Hydrolysis of dvumetasilikata sodium hore u socodka taagta daran.

silicate sodium waxaa la aasaasay by dhexgalka ee Silicon leh alkali ah: Si + H2O + 2NaOH → Na2SiO3 + 2H2. reaction noocan oo kale ah waxaa laga yaabaa in la alkalies daciif dhacaan, iyo sidoo kale waa mid aad u fudud u biyo ay joogaan xitaa qadar yar oo ah OH- anions raad ku filan of alkali ka muraayadda soo bixiyay. Tan iyo metasilicate sodium sameeyay waa cusbo ah a metasilicic acid daciif ah, in xal lagu milo waa ku dhowaad gebi ahaanba hydrolyzed, fiirsashada of udhigo OH- aanu hoos u ma lagu jiro dareen, sidaas waxa hoos si daatay biyaha Silicon ah. Goobjoog ka yihiin raad Hannaan alkali. Laga soo bilaabo 0,63 kg Silicon sidan waa la helay 1 m3 ah hydrogen, halka bir u baahan tahay ku dhawaad 4 jeer ka badan.

In warshadaha, fasalada kala duwan ee silicate sodium, lagu gartaa ratio ee SiO2 iyo Na2O. Waxay ku kala duwanaan kara 2: 1 ilaa 3.75: 1. Cultivars oo cabirku yahay 2.85: 1 iyo hoos waxaa loo tixgeliyaa aasaasiga ah. Kuwa la ratio sare waxaa lagu gartaa sida "dhex-dhexaad ah." silicate sodium foomka of xal aqueous ku urursan yihiin hal galaas oo dareere ah ama L.. Laakiin oo ay la socdaan Na2SiO3 ee galaas biyo ah iyo hadiyad silicates kale sodium, si kastaba ha ahaatee inta ay ka kooban caadiga ah ka muujiyey by caanaha, kaas oo qiyaas ahaan, Na2O • nSiO2, kuna waari dhexdeeda n = 2 ÷ 4. tirtiridda tartiib ah SiO2 (sida caadiga ah inta lagu guda jiro kaydinta daba dheeraaday) keenaysaa in carceero ama waterglass in qaab beddelidda mararka mass gelatinous. Sidaa darteed, in shaybaarka waxaa la qabtay in weelasha, xidhi Itlay caag, sida cortical ama galaas in qoorta ul a.

silicate sodium waxaa loo isticmaalaa wax soo saarka ee budo oomo. wax soo saarka ee sannadlaha ah ee galaas la shubay waa boqolaal kun oo metric. Waxa loo isticmaalaa si loo xoojiyo ciidda lagu jiro dhismaha (tus, la taaban karo ilaalinta screed dabaqa ka dhanka ah abrasion), iyo sidoo kale reagents kale, sida tripolyphosphate sodium, codsatay in warshado badan (labada cusbada, tus, loo isticmaalo sareyso meletariga oo biyo ah). Dahaadhida Na2SiO3 waddooyinka baabuurta la taaban karo si weyn u yaraynaysaa ay Duugga.

qoryo ama qalabka kale si looga hortago dabka (tus, dhismayaasha ama muuqaal masrixiyada). Inta badan waxa ay u adeegtaa saldhig ahaan cements madax adkaadeen ama koolada warqada. Putty Halabuurka Simple haboon galaas lagala kulmo iyo dhalooyinka. Waxay la diyaarin karaa by qasin (si joogta ah cajiinka a) nuurad la galaas oo dareere ah. Isku dar ah si deg deg ah engejiyaa iyo jirsado caddaan, iyo tiro aad u adag.

Of cement, qaso koob ee dareeraha ah, ka dhigi dhakhso adkaansho Putty, kaasoo loo isticmaalo dhagaxyo lagala kulmo. isku dar ah oo silicate sodium la balka waxaa loo isticmaalaa in la buuxiyo bannaan oo u dhaxeeya darbiyada double in khasnado qaar ka mid ah. Taas ayaa ka dhigaysa kuwo dab u adkaysta, iyo sidoo kale ilaalinta oo dheeraad ah ka gees ah furitaanka taasi oo ka Dhuxul alxamaad ay sabab u tahay qiiq culus oo sababay digniinta.