I. Okwu Mmalite
Hydroxyethyl Cellulose (HEC) bụ polima na-agbaze mmiri nke na-abụghị ionic nke a na-ejikarị eme ihe n'ịmịpụta mmanụ, mkpuchi, owuwu, kemịkalụ kwa ụbọchị, imepụta akwụkwọ na ubi ndị ọzọ. A na-enweta HEC site na mgbanwe kemịkalụ nke cellulose, ihe ndị na-anọchi hydroxyethyl na molekul cellulose na-ekpebikwa ihe onwunwe na ojiji ya.
II. Usoro mmepụta
Usoro mmepụta nke HEC gụnyere usoro ndị a: cellulose etherification, ịsacha, ịkpọ nkụ, ịkpọ nkụ na egweri. Nke a bụ okwu mmalite zuru ezu maka usoro ọ bụla:
Mmepụta selulose
A na-ebu ụzọ gwọọ cellulose site na iji alkali mee ka ọ ghọọ alkali cellulose (cellulose Alkali). A na-emekarị usoro a na reactor, na-eji sodium hydroxide solution agwọ cellulose eke iji mepụta alkali cellulose. Mmeghachi omume kemịkalụ bụ dịka ndị a:
Cell-OH+NaOH→Cell-O-Na+H2OCell-OH+NaOH→Cell-O-Na+H 2O
Mgbe ahụ, alkali cellulose na-emeghachi omume na ethylene oxide iji mepụta hydroxyethyl cellulose. A na-eme mmeghachi omume ahụ n'okpuru nrụgide dị elu, nke na-abụkarị 30-100°C, mmeghachi omume kpọmkwem bụ dịka ndị a:
Cell-O-Na+CH2CH2O→Cell-O-CH2CH2OHCell-O-Na+CH 2CH 2O→Cell-O-CH 2CH 2OH
Mmeghachi omume a chọrọ njikwa ziri ezi nke okpomọkụ, nrụgide na ọnụọgụ ethylene oxide agbakwunyere iji hụ na ngwaahịa ahụ dị n'otu na ịdị mma.
Ịsa
HEC a na-enweta na-enwekarị alkali na-anaghị anabata mmeghachi omume, ethylene oxide na ihe ndị ọzọ sitere na ya, nke a ga-ewepụ site na ịsa mmiri dị iche iche ma ọ bụ ịsa ihe ndị na-agbaze ihe dị ndụ. A chọrọ nnukwu mmiri n'oge a na-asa mmiri, a ga-agwọkwa mmiri mkpofu mgbe a sachara ya ma wepụ ya.
Mmiri ịkpọ nkụ
A ga-eji mmiri mmiri mee ka mmiri ghara ịdị n'ime HEC ahụ mgbe a sachara ya, nke a na-ejikarị eme ihe site na nzacha ikuku ma ọ bụ nkewa centrifugal iji belata mmiri dị n'ime ya.
Ịkpọcha
A na-akpọnwụ HEC nke a kpọnwụrụ akpọnwụ, nke a na-ejikarị agba mmiri ma ọ bụ kpọọ nkụ ozugbo. A ghaghị ịchịkwa okpomọkụ na oge ya nke ọma n'oge a na-akpọ nkụ iji zere mmebi okpomọkụ dị elu ma ọ bụ nchịkọta.
Ịgweri
A ga-egwepịa ma gwepịa blọk HEC a kpọrọ nkụ iji nweta nha nha nha nha, wee mechaa mepụta ntụ ntụ ma ọ bụ ngwaahịa granular.
III. Àgwà arụmọrụ
Mmiri na-agbaze
HEC nwere ezigbo ike ịgbaze mmiri ma nwee ike ịgbaze ngwa ngwa ma na mmiri oyi ma na-ekpo ọkụ iji mepụta ngwọta doro anya ma ọ bụ nke na-agbanwe agbanwe. Njirimara mgbaze a na-eme ka ọ bụrụ ihe na-eme ka ọ sie ike ma na-eme ka ọ kwụsie ike na mkpuchi na ngwaahịa kemịkalụ kwa ụbọchị.
Ịkpụ ọkpụrụkpụ
HEC na-egosi mmetụta siri ike nke ịdị arọ n'ime mmiri mmiri, oke ike ya na-abawanye ka mmụba nke ibu molekul. Ihe a na-eme ka ọ sie ike na-enyere ya aka ịrụ ọrụ na ịdị arọ, idobe mmiri na imeziwanye arụmọrụ owuwu na mkpuchi mmiri na ngwa agha ụlọ.
Ọmụmụ ihe gbasara ọrịa ara
Mmiri HEC nwere ihe pụrụ iche dị na mmiri, ọ na-agbanwekwa viscosity ya ka ọ na-agbanwe mgbe ọ na-agbanwe ọnụego shear, na-egosi ịcha shear ma ọ bụ pseudoplasticity. Ihe onwunwe rheological a na-enye ya ohere ịgbanwe mmiri na arụmọrụ owuwu na mkpuchi na mmiri mmanụ.
Mmeghachi omume na nkwụsịtụ
HEC nwere ezigbo ihe ndị na-eme ka ihe dị n'ime mmiri na ihe ndị na-egbochi mmiri sie ike, nke nwere ike ime ka ihe ndị na-adịghị mma ma ọ bụ ihe ndị na-ada ada n'ime sistemụ mgbasa ozi sie ike iji gbochie nhazi na mmiri. Ya mere, a na-ejikarị HEC eme ihe na ngwaahịa dịka mkpuchi emulsion na ọgwụ mgbochi.
Mmebi nke ndụ
HEC bụ ihe sitere n'okike nke cellulose nwere ezigbo mmebi gburugburu ebe obibi, enweghị mmetọ gburugburu ebe obibi, ma na-emezu ihe achọrọ maka nchekwa gburugburu ebe obibi akwụkwọ ndụ akwụkwọ ndụ.
IV. Ubi Ngwa
Mkpuchi
N'ime mkpuchi mmiri, a na-eji HEC eme ihe dị ka ihe na-eme ka ihe sie ike ma na-eme ka ọ sie ike iji melite mmiri mmiri, arụmọrụ owuwu na ihe ndị na-egbochi ịchaji nke mkpuchi.
Owuwu ụlọ
N'ihe gbasara ihe owuwu ụlọ, a na-eji HEC eme ihe n'ime simenti na ntụ ntụ putty iji melite arụmọrụ owuwu na idobe mmiri.
Kemịkalụ Kwa Ụbọchị
N'ime ihe nhicha, shampoo, na ihe nhicha ezé, a na-eji HEC eme ihe dị ka ihe na-eme ka ihe sie ike ma na-eme ka ngwaahịa ahụ sie ike ma melite mmetụta na nkwụsi ike ya.
Ebe mmanụ
N'ime olulu mmanụ na mmiri mgbawa, a na-eji HEC emezi ihe gbasara rheology na nkwụsịtụ nke mmiri mgbapụta ma melite arụmọrụ na nchekwa nke olulu mmiri.
Ịme akwụkwọ
N'ime usoro nhazi akwụkwọ, a na-eji HEC achịkwa mmiri pulp ma melite ịdị n'otu na ọdịdị elu nke akwụkwọ.
A na-eji Hydroxyethyl cellulose (HEC) eme ihe n'ọtụtụ ebe n'ụlọ ọrụ mmepụta ihe n'ihi na ọ na-agbaze mmiri nke ọma, na-eme ka ọ sie ike, na-eme ka ọ dị nro, na-eme ka ọ dị nro, na-eme ka emulsion na nkwụsịtụ dị mma, yana ezigbo ihe ndị na-emebi emebi. Usoro mmepụta ya dị oke mma. Site na usoro nke cellulose etherification, ịsa, ịkpọ nkụ, ịkpọ nkụ na igwe nri, enwere ike ịkwadebe ngwaahịa HEC nwere arụmọrụ kwụsiri ike na ezigbo mma. N'ọdịnihu, site na mmezi nke ihe achọrọ maka nchekwa gburugburu ebe obibi na ọganihu nke teknụzụ, atụmanya ojiji nke HEC ga-abawanye.
Oge ozi: Julaị-02-2024