Paʻakai silicate

Silicates (mai ka Roma hua'ōlelo "silex" Ua unuhi i "pohaku") i kapaia metasilicic paakai H2SiO3. No ka laʻana, paʻakai silicate, kona Nine Inch haʻilula ua palapala ia penei: Na2SiO3. Kekahi inoa no ka paʻakai - paʻakai metasilicate. lākou, Molar nuipa o ka waiwai 122,06 g. / Mol. Helehelena - keʻokeʻo opaque nā pōaka me he omaomao iki tinge. Nuʻa Ua like ia 2.4 g. / Cm3. Maemae wehewehe aku ma ka refractive 'inideka, a lākou, 1,52. Heheʻe wahi - hoʻohui 1088 ° C. Ka waiwai Ua wailana i ka wai a me ka insoluble ma ka waiʻona. Ke dilute koʻana koko pāʻoihana i kū hoʻokahi waiwai: ia submerged ma hawaiian hua hiki ke hūnāʻia i ka mahina eiwa i mehana ea. Paʻakai silicate mea ku paa auanei i ka'ākilikai, a'ākilikai Media, a me kaʻakika anion SiO3- reacts me ka H + cations e lilo silicicʻakika.

Ka silica i (i kapaʻia ka silica i ole silicic anhydride) o ka loa i ka pilina paʻa hui i ia lŘlŘ maoli ai i loko o ka palapala o ka pōaka. Ua hoike no ka 12% o ka nui o ka Honua ka pńpa. Ka silica i ua hoʻohaumiaʻia me impurities mea he pono ke one, a ua hanaʻia ma ka make ana o ka pōhaku. Ma lalo o ka hana o ka mekala 'åkilikai ma luna o ka silica i Nine Inch naoh: NaOH + SiO2 → Na2SiO3 + H2O. E like me ka hopena, he silicicʻakika paʻakai - paʻakai silicate. Hydrolysis o ka paakai (decomposition me ka wai) penei ke ano: 2Na2SiO3 + H2O → Na2SiO5 + 2NaOH , a me ka paʻakai dvumetasilikat hana. Me ka emi ma ka lehulehu o nā pāʻoihana, hydrolysis ia lŘlŘ loa. Ma 1N. hydrolyzed pāʻoihana o 14% ka paʻakai i loko o 0.1N. - 28% i 0,001% - 32%. Hydrolysis o ka paʻakai dvumetasilikata ua kahe nawaliwali.

Paʻakai silicate ua hana ma ka AaOIeIOUIeXAOAaIN o silikone me ka mekala 'åkilikai: Si + H2O + 2NaOH → Na2SiO3 + 2H2. Oia naoh kānāwai me ka nawaliwali alkalies, a me ka mea i nui wale me ka wai i loko o ke alo o ke ahiahi, He nīnūnē nui o OH- anions lawa ko läkou 'o ka mekala' åkilikai loko mai o ke aniani. Mai ka paʻakai metasilicate hana nei i ka paakai o ka poe ikaika ole metasilicicʻakika, ma ka dilute pāʻoihana ia mea kokoke loa hydrolyzed, i ka lehulehu o OH- Ion 'aʻole i emi ma ka naoh, no laila, e hele mai ia i ka decomposition o ka silikone wai. Keia manawa i ko läkou 'o ka mekala' åkilikai hōʻeleu. Mai 0,63 kg silikone ma keia ano ua loaa 1 m3 o ka hydrogen, ka mea hao e noi aku iʻaneʻane 4 manawa hou aku.

I hana, likeʻole papa o ka paʻakai silicate, wehewehe aku ma ka lākiō o SiO2 a me Na2O. Ua hiki ke oko a mai ka 2: 1 i 3,75: 1. Cultivars me ka lākiō o ka 2,85: 1, a ma lalo e manaoia walaʻauʻana. Ka poe me ka lākiō kiekie e wehewehe aku i "'ākilikai." Paʻakai silicate ma ke ano o ke koʻana koko i kia pāʻoihana e kinowai a wailana aniani. Akā, a me Na2SiO3 i keia wai aniani, a me ka paʻakai silicates, nae kona mau haku mele 'ana i hoike ma ka haʻilula, i mea He kokekau wale, Na2O • nSiO2, ai N = 2 ÷ 4. O ka holo hoʻopau o SiO2 (IeAUPIIe, IAa IO, i hooloihi ae i waho pūnaewele) hiki aku i ka Ohana a waterglass i ka huli ana i kekahi manawa gelatinous nuipa a. No laila, i loko o ke keʻena hoʻokolohua ka mea, ua paʻa i loko o na moku, paa hou mai la me ka laholio pani'ōmole, me cortical paha aniani a hiki i ka'ā'ī o ka lāʻau.

Paʻakai silicate ua hoʻohana 'ia i loko o ka? Iecaianoaaiiie o detergent me ka pauka. Ka makahiki? Iecaianoaaiiuo o ke aniani i hoʻoheheʻeʻia ka haneri, no nā tausani o ka tons. Ua Ua hoʻohana 'ia e hooikaika i ka lepo i hana (e laʻa me, pōhaku puna papa screed ka palekana i ka abrasion), e like me nā reagents, e like me ka paʻakai tripolyphosphate, noi ma na mea he nui na hana (nā paʻakai, e laʻa me, hoʻohana' ia no ka wai i hoopalupaluia,). Impregnation Na2SiO3 ulia kaʻa pōhaku puna alanui nui ho'ēmi i kā lākou Wear.

no ka wahie a me nā pono hana e hoʻopale ai i ka ahi (e laʻa me, na hale a me moʻolelo keaka waleʻikena). Pinepine ia lawelawe 'ana me ke kumu no ka refractory lepo pipili no hoi a me ka pepa glue. Simple haku mele 'ana putty pono no ka ponaʻana porcelain a me ka aniani. Ka mea hiki ke hoomakaukau e hoʻohuihui (i ka palaoa hana mau) chalk me ka wai aniani. I ka läÿau, koke hoopaakiki hoi a me ka huli keʻokeʻo, a me ka loa paa nui.

O ka lepo pipili, i hui pūʻia me ke kinowai aniani, e hookeai hoopaakiki putty, a ua hoʻohana 'ia no ka ponaʻana i nā pōhaku. A hui o ka paʻakai silicate me ka sawdust e hoʻohana i ka hoʻopiha i ka makahiki ma waena o ka papalua paia i loko o kekahi mau ia e ola. Kēia hana ia aku ke ahi-hoʻopale, a me ka lawelawe 'me he hou ka palekana i ka puka ma ka mea o acetylene lama ma muli o ke kaumaha uahi a me ka triggering i ka pū waikaua.