Cellulose ether nwere ike imeziwanye arụmọrụ nke ngwa agha mmiri, ma bụrụ ihe mgbakwunye bụ isi nke na-emetụta arụmọrụ nke ngwa agha. Nhọrọ ezi uche dị na ya nke cellulose ethers nke ụdị dị iche iche, viscosities dị iche iche, nha nha dị iche iche, ọkwa dị iche iche nke viscosity na ego agbakwunyere ga-enwe mmetụta dị mma na nkwalite arụmọrụ nke ngwa ngwa ntụ ntụ.
Enwekwara mmekọrịta dị mma n'ahịrị n'etiti nkwụsi ike nke cement ciment na usoro nke cellulose ether. Cellulose ether nwere ike ịbawanye viscosity nke ngwa agha. Ka usoro onunu ogwu buru ibu, ka mmetụta ya pụta ìhè. Ihe ngwọta dị elu nke cellulose ether aqueous nwere nnukwu thixotropy, nke bụkwa isi njirimara cellulose ether.
Mmetụta siri ike na-adabere n'ókè nke polymerization nke cellulose ether, ngwọta ngwọta, ọnụ ọgụgụ shear, okpomọkụ na ọnọdụ ndị ọzọ. Ngwongwo gelling nke ihe ngwọta bụ ihe pụrụ iche na alkyl cellulose na ihe ndị gbanwetụrụ. Njirimara gelation metụtara ogo ngbanwe, ntinye ngwọta na ihe mgbakwunye. Maka ihe nrụpụta hydroxyalkyl gbanwetụrụ, njirimara gel na-emetụtakwa ogo mgbanwe nke hydroxyalkyl. 10% -15% ngwọta nwere ike kwadebere maka obere viscosity MC na HPMC, 5% -10% ngwọta nwere ike kwadebere maka ọkara viscosity MC na HPMC, na 2% -3% ngwọta nwere ike kwadebere maka elu-viscosity MC. na HPMC. Ọtụtụ mgbe, a na-eji ngwọta 1%-2% na-agbazi ọkwa viscosity nke cellulose ether.
Ether cellulose dị arọ nke dị elu nwere oke nrụpụta arụmọrụ. Polymers nwere ịdị arọ molekụla dị iche iche nwere viscosities dị iche iche n'otu ngwọta ntinye uche. Ọkwa dị elu. Enwere ike nweta viscosity ebumnuche naanị site n'ịgbakwụnye nnukwu ether cellulose dị arọ dị ala. Viscosity ya nwere ntakịrị ịdabere na ọnụ ọgụgụ shear, na viscosity dị elu na-erute viscosity lekwasịrị anya, na ihe mgbakwunye a chọrọ dị ntakịrị, na viscosity na-adabere na nrụpụta ọrụ. Ya mere, iji nweta ihe na-agbanwe agbanwe, a ghaghị ijide n'aka na ether cellulose ether (ntụkwasị uche nke ngwọta) na viscosity ngwọta ga-ekwe nkwa. The gel okpomọkụ nke ngwọta na-ebelata linearly na-abawanye nke ịta nke ihe ngwọta, na gels na ụlọ okpomọkụ mgbe eru a ụfọdụ ịta. The gelling ịta ahụhụ nke HPMC dịtụ elu na ụlọ okpomọkụ.
Oge nzipu: Mar-08-2023