Njirimara nke cellulose ethers

Cellulose ethers na-enye ezigbo viscosity na ngwa agha mmiri, na-abawanye ike nke ngwa ngwa mmiri na mkpụrụ osisi ma melite nguzogide ngwa agha, a na-ejikwa ya na plasta ngwa agha, brik bonding ngwa agha na mpụta mkpuchi usoro. The ndim mmetụta nke cellulose ether nwekwara ike dịkwuo mgbochi dispersing ikike na homogeneity nke freshly agwakọta ihe, gbochie ihe delamination, segregation na mmiri secretion, na ike ga-eji na eriri ihe, n'okpuru mmiri ihe na onwe compacting ihe.

Mmetụta siri ike nke cellulose ethers na ihe simenti na-esi na viscosity nke cellulose ether ngwọta. N'okpuru otu ọnọdụ ahụ, elu viscosity nke cellulose ether, mma viscosity nke gbanwetụrụ simenti ihe onwunwe, ma ọ bụrụ na viscosity dị oke elu, ọ ga-emetụta ndị fluidity na workability nke ihe onwunwe (eg nnyapade plaster knives). Mgbọ ndị na-edozi onwe ha na ihe ndị na-ejikọta onwe ha, nke na-achọ ka mmiri dị elu, chọrọ obere viscosity nke cellulose ethers. Tụkwasị na nke ahụ, mmetụta dị nro nke cellulose ethers na-eme ka mmiri simenti na-achọsi ike ma na-amụba mkpụrụ nke ngwa agha.

The viscosity nke cellulose ether ngwọta na-adabere na ihe ndị na-esonụ: molekụla arọ nke cellulose ether, itinye uche, okpomọkụ, shear ọnụego na ule usoro. N'okpuru otu ọnọdụ ahụ, ka ịdị arọ nke cellulose ether dị ukwuu, nke dị elu nke viscosity nke ngwọta; elu nke ịta, elu viscosity nke ngwọta, na ojiji nke nlebara anya kwesịrị ịkwụ ụgwọ iji zere oke dosing na-emetụta na-arụ ọrụ Njirimara nke ngwa agha na ihe; cellulose ether ngwọta viscosity ga-ebelata na mmụba nke okpomọkụ, na elu nke itinye uche, mmetụta nke okpomọkụ ka ukwuu; cellulose ether ngwọta na-abụkarị pseudoplastic mmiri mmiri, na ọdịdị nke shiee thinning, ukwuu nke ule The ukwuu shiee ọnụ ọgụgụ nke ule, nke nta nke viscosity, ya mere na cohesion nke ngwa agha ga-ebelata n'okpuru omume nke mpụga ike, nke na-enyere aka n'ịkpụcha ihe nkedo nke ngwa agha, nke mere na ngwa agha ahụ nwere ike ịrụ ọrụ nke ọma na njikọta n'otu oge; n'ihi na ngwọta cellulose ether bụ mmiri na-abụghị Newtonian, ule viscosity test ụzọ, ngwá ọrụ ma ọ bụ ule gburugburu ebe obibi, otu cellulose ether ngwọta ule nsonaazụ nwere ike ịdị iche iche nke ukwuu.