Ijeli yeSilica luhlobo lwezixhobo ezisebenza kakhulu zokufunxa.
Yinto engenasimo kwaye ifomula yayo yekhemikhali yi-mSiO2.nH2O. Ihlangabezana nomgangatho wekhemikhali waseTshayina i-HG/T2765-2005. Yinto eluhlaza ye-desiccant evunyiweyo yi-FDA enokudibana ngokuthe ngqo nokutya kunye namayeza. Ijeli ye-silica inamandla amakhulu e-hygroscopic, ukusebenza okuqinileyo kokufunxa, nokuba i-desiccant yejeli ye-silica intywiliselwa ngokupheleleyo emanzini, ayizukuthamba okanye inyibilikise. Ineempawu zokungabi natyhefu, ayinancasa, ayiboli kwaye ayingcolisi, ngoko ke inokudibana ngqo nayo nayiphi na into. Izinto eziluhlaza ekufuneka zilungiselelwe ukuveliswa kwejeli ye-silica zezi: i-sodium silicate (i-paucine, iglasi yamanzi), i-sulfuric acid.
Okokuqala, i-alkali kunye ne-asidi zilungiswa kwangaphambili, emva koko i-sodium silicate eqinileyo iyanyibilika kubushushu obuphezulu kwaye ihluzwe ukulungiselela uxinzelelo oluthile lolwelo, emva koko i-sulfuric acid ilungiswa ukuya kuxinzelelo oluthile lolwelo, uxinzelelo lwe-sulfuric acid yi-20%.
Okwesibini, inyathelo lesibini kukwenza iglu (i-gel granulation), eli nyathelo lelona libaluleke kakhulu, isisombululo se-bubble lye esilungisiweyo kwangaphambili kunye nesisombululo se-sulfuric acid phantsi kweemeko ezithile, ukuze kwenziwe isisombululo se-gel esinyibilikayo, emva kokufikelela kuxinzelelo olufanelekileyo kuya kuba zii-gel particles. Ubume kunye nobukhulu bee-particles bunokugqitywa ngokupheleleyo ngokweemfuno zomsebenzisi kunye namandla emveliso. Indlela eqhelekileyo ye-gel granulation yi-air granulation, kwaye umlinganiselo we-acid-base, uxinzelelo, ubushushu kunye nexesha le-gel granulation elisetyenziswa kwinkqubo ye-gel granulation ziiparameter ezithile zobuchwepheshe.
Okwesithathu, ijeli yokuguga kufuneka idlule kwixesha elithile kunye nobushushu, kunye nexabiso le-PH ukuya kwixesha lokuguga, okwenza i-skeleton yejeli ibe namandla, ukuxinana kweglu phakathi kwamasuntswana ngexesha lenkqubo yokuguga ukuze kwenziwe amakhonkco e-Si-O-Si, kuphuculwe amandla e-skeleton, amasuntswana asondelelene, kuncitshiswe indawo kwisakhiwo segridi, kwaye amanzi akuyo ayacinywa.
Ukugalela, ukuhlamba, ukuhlamba iglu Ukugalela, ukuhlamba, ukuhlamba iglu kukwalinyathelo elibaluleke kakhulu kule nkqubo, kuba i-Na2SO4 eyenziwe yijeli yegranular iyahlanjwa. Lawula i-anion nganye ngaphakathi koluhlu olufunekayo kule nkqubo. Kunokuthiwa inxalenye enkulu yeempawu ze-pore yejeli ye-silica egqityiweyo imiselwa kukuguga kwenkqubo yokuhlamba irabha, kwaye inqanaba lokuguga kwale nkqubo lixhomekeke ekusebenzeni kwenkqubo yokuhlamba irabha, ukuhlamba, kunye nerabha.
Okwesihlanu, ukomisa, i-hydrogel elungisiweyo (emva kokuhlamba) ingeniswe kwigumbi lokomisa, kwiimeko ezithile ukunciphisa umxholo wamanzi wejeli ngokwayo ukoma ukuya kuluhlu olufunekayo. Okukhona ubushushu bokomisa buphezulu, kokukhona isantya sokuhlanganiswa kwamasuntswana okuqala siphezulu kwaye kokukhona imbobo inkulu.
Emva kokucoca, umatshini wokukhetha ibhola uya komiswa emva kokuba i-silicone ivuliwe ngesikrini seembobo ezahlukeneyo ngokuhambelana nobungakanani obuthile be-particle screening, kwaye ngexesha elifanayo iya kwaphulwa i-silica gel screening out.
Isixhenxe, ukukha iglu: ijeli yesilika kwibhola ye-heterochromatic, ukungcola kukhutshwe uze usebenzise iphepha elidityanisiweyo ngokweemfuno zephakheji, emva kokutywinwa. Emva kwamanyathelo angentla, imveliso yesilicone iveliswa.
Ixesha lokuthumela: Novemba-14-2023
