Kedu ihe bụ Cellulose Ether ngwa?

Ọ na-ewebata nkwadebe ether cellulose, ọrụ ether cellulose nangwa cellulose ether, karịsịa ngwa na mkpuchi.
Isi okwu: cellulose ether, arụmọrụ, ngwa
Cellulose bụ ngwakọta macromolecular eke. Ọdịdị kemịkal ya bụ polysaccharide macromolecule nwere β-glucose anhydrous dị ka mgbanaka ntọala. Enwere otu hydroxyl mbụ na otu abụọ hydroxyl dị na mgbanaka ntọala ọ bụla. Site na mgbanwe kemịkalụ ya, enwere ike nweta usoro mkpụrụ ndụ cellulose, na ether cellulose bụ otu n'ime ha. A na-eji ether cellulose eme ihe n'ọtụtụ ụlọ ọrụ.

1.Nkwadebe

A na-enweta cellulose ether site n'imeghachite cellulose na NaOH, wee meghachi omume na monomers dị iche iche na-arụ ọrụ dị ka monochloromethane, ethylene oxide, propylene oxide, wdg, na ịsacha nnu na-emepụta nnu na cellulose sodium.

2.Arụmọrụ

2.1 Ọdịdị: Cellulose ether na-acha ọcha ma ọ bụ mmiri ara ehi na-acha ọcha, enweghị isi, adịghị egbu egbu, ntụ ntụ ntụ nwere mmiri mmiri, dị mfe ịmịkọrọ mmiri mmiri, na-agbaze n'ime colloid viscous transperent na mmiri.
2.2 Ionicity: MC, MHEC, MHPC, HEC bụ ndị na-adịghị; NaCMC, NaCMHEC bụ anionic.
2.3 Etherification: Njirimara na ogo nke etherification nke etherification ga-emetụta arụmọrụ nke cellulose ether n'oge etherification, dị ka solubility, ike ịmepụta ihe nkiri, ike nkedo na nguzogide nnu.
2.4 Solubility: (1) MC na-agbaze na mmiri oyi, a na-esighi ike na mmiri ọkụ, yana soluble na ụfọdụ ihe mgbaze; MHEC na-agbaze na mmiri oyi, nke na-adịghị edozi na mmiri ọkụ na ihe mgbaze organic. Otú ọ dị, mgbe ngwọta mmiri nke MC na MHEC dị ọkụ, MC na MHEC ga-agbapụta. MC na-agbapụta na 45-60 Celsius C, ebe okpomọkụ mmiri ozuzo nke MHEC agwakọta etherified na-ebili na 65-80 Celsius. Mgbe ewedara okpomoku ahụ, mkpọda ahụ na-agbaze. (2) HEC, NaCMC, na NaCMHEC bụ soluble na mmiri n'oge ọ bụla okpomọkụ, ma insoluble na organic solvents (na ole na ole wepụrụ).
2.5 Ọzịza na-egbu oge: Cellulose ether nwere ụfọdụ ọzịza na-egbu oge na mmiri pH na-anọpụ iche, mana ọ nwere ike imeri ọzịza a na-egbu oge na mmiri pH alkaline.
2.6 Viscosity: Cellulose ether na-agbaze na mmiri n'ụdị colloid, na viscosity ya dabere na ogo polymerization nke cellulose ether. Ihe ngwọta nwere macromolecules hydrated. N'ihi nchikota nke macromolecules, omume na-asọpụta nke ngwọta dị iche na nke mmiri Newtonian, ma na-egosipụta omume na-agbanwe na ike ịkwa akwa. N'ihi usoro macromolecular nke cellulose ether, viscosity nke ngwọta na-abawanye ngwa ngwa na mmụba nke itinye uche ma na-ebelata ngwa ngwa na mmụba nke okpomọkụ.
2.7 Nkwụsi ike nke ndu: A na-eji cellulose ether mee ihe na mmiri mmiri. Ọ bụrụhaala na mmiri dị, nje bacteria ga-etolite. Uto nke nje bacteria na-eduga na mmepụta nke nje bacteria enzyme. Enzyme ahụ na-agbaji njikọ nke anhydroglucose na-edoghị anya nke dị n'akụkụ ether cellulose, na-ebelata ịdị arọ molekụla nke polymer. Ya mere, ọ bụrụ na a ga-echekwa ihe ngwọta cellulose ether aqueous ruo ogologo oge, a ghaghị itinye ihe nchekwa na ya. Nke a bụ eziokwu ọbụlagodi na ethers cellulose antimicrobial.

3. Nzube

3.1 Oil ubi: A na-ejikarị NaCMC eme ihe n'ubi mmanụ, a na-ejikwa ya na-emepụta apịtị iji mee ka viscosity dịkwuo elu ma belata mmiri mmiri. Ọ nwere ike iguzogide mmetọ nnu soluble dị iche iche ma melite mgbake mmanụ. Sodium carboxymethyl hydroxypropyl cellulose na sodium carboxymethyl hydroxyethyl cellulose bụ ezi mkpọpu ala apịtị ọgwụgwọ elekọta mmadụ na ihe maka nkwadebe mmecha mmiri mmiri, na elu pulping ọnụego, ezi nnu na calcium eguzogide, Ọ nwere ezi viscosity-amụba ikike na okpomọkụ iguzogide (160 ° C). Ọ dị mma maka ịkwadebe mmiri mmiri nke mmiri ọhụrụ, mmiri mmiri na mmiri nnu jupụtara. Enwere ike ịhazi ya n'ime mmiri mmecha nke njupụta dị iche iche (1.03-1.279 / Cm3) n'okpuru ịdị arọ nke calcium chloride, ọ nwekwara ụfọdụ viscosity. Na mfu mmiri dị ala, viscosity ya na-abawanye ikike na mbelata mmiri mmiri dị mma karịa hydroxyethyl cellulose, ọ bụ ihe mgbakwunye dị mma maka ịbawanye mmepụta mmanụ.
3.2 ceramics ụlọ: Enwere ike iji NaCMC mee ihe dị ka onye na-azụ ahịa, onye na-ejigide mmiri, onye na-ekpuchi mmiri na ihe nkedo, nke mere na ngwaahịa seramiiki emepụtara nwere ọdịdị dị mma na enweghị ntụpọ na afụ.
3.3 Ịme akwụkwọ: A na-eji NaCMC eme ihe maka ime ime na n'èzí na njuputa na njigide nke elu akwụkwọ, ma nwee ike dochie casein, nke mere na ink ibipụta nwere ike ịbanye ngwa ngwa na ọnụ ya doro anya. N'ime akwụkwọ ahụaja, enwere ike iji ya dị ka onye na-ekesa pigmenti, tackifier, stabilizer na onye na-ahụ maka nha.
3.4 Textile: A na-eji NaCMC dochie ọka na nha na ụlọ ọrụ textile, ọ dịghịkwa mfe ịka njọ na ịghọ ihe ebu. Mgbe ị na-ebipụta na agba, ọ dịghị mkpa ka desizing, na agba nwere ike nweta a edo colloid na mmiri, nke enhances hydrophilicity na ntinye nke agba. N'otu oge ahụ, n'ihi obere mgbanwe na viscosity, ọ dị mfe ịhazi ọdịiche agba. A na-eji CMHEC eme ihe dị ka ihe na-esi ísì ụtọ maka ibipụta akwụkwọ na ịcha akwa, na-enwe obere ihe fọdụrụ na akwa agba, na ịdị mma mbipụta na ịcha akwa dị elu karịa otu ionic na ndị na-abụghị ionic cellulose ether ngwaahịa.
3.5 ụtaba: A na-eji NaCMC maka njikọta ụtaba. Ọ na-agbaze ngwa ngwa ma nwee ike njikọ siri ike, nke bara uru iji melite àgwà sịga ma belata ọnụ ahịa.
3.6 ịchọ mma: NaCMC na-arụ ọrụ nke ịgbasa, kwụsịtụ na stabilizing na mado ngwaahịa nke siri ike silty raw material, na-arụ ọrụ nke ndim, dispersing na homogenizing na mmiri mmiri ma ọ bụ emulsion ịchọ mma. Enwere ike iji ya dị ka emulsifier, thickener na stabilizer maka ude na ncha ntutu.
Batrị 3.7: NaCMC nwere ịdị ọcha dị elu, ezigbo acid na nguzogide nnu, karịsịa obere ígwè na ihe dị arọ dị arọ, na colloid dị nnọọ mma, dị mma maka batrị alkaline na batrị zinc-manganese.
3.8 agba mmiri: HEC na MHEC nwere ike iji mee ihe dị ka stabilizers, thickeners na mmiri na-ejide mmiri maka agba latex. Tụkwasị na nke ahụ, a pụkwara iji ha mee ihe dị ka ndị na-ekesa, ndị na-emepụta ihe na ndị na-emepụta ihe nkiri maka agba ciment acha.
3.9 Ihe owuwu ụlọ: enwere ike iji ya dị ka onye na-ekesa, onye na-ejigide mmiri na onye na-ekpuchi mmiri maka plasta na ngwa agha nke gypsum ala oyi akwa na ciment ala oyi akwa, na ihe nkedo ala.
3.10 Glaze: Enwere ike iji ya dị ka nrapado nke glaze.
3.11 Ncha: Enwere ike iji ya dị ka onye na-egbochi ntachi anya maka ịgbasa unyi.
3.12 Emulsion mgbasa: enwere ike iji ya dị ka stabilizer na thickener.
3.13 ntacha eze: Enwere ike iji NaCMHPC dị ka ihe nkwụnye maka nrapado eze. Ọ nwere ihe dị mma nke thixotropic, na-eme ka ntacha eze dị mma na ọdịdị ya, ogologo oge na-enweghị nrụrụ, ma nwee otu ụdị na ụtọ dị nro. NaCMHPC nwere nguzogide nnu dị elu yana nguzogide acid, yana mmetụta ya dị elu karịa nke CMC.

4. Ngwa na mkpuchi na pastes

Cellulose ether na-arụ ọrụ dị oke mkpa na mkpuchi na pastes. Naanị tinye ngụkọta ego nke usoro O. 2% na 0.5% nwere ike ịgbatị, na-ejigide mmiri, gbochie pigmenti na ndị na-ejuputa ka ọ ghara idozi, ma mee ka adhesion na ike jikọta.
4.1 Viscosity: The viscosity nke cellulose ether aqueous ngwọta na-agbanwe na shie ike, na agba na mado thickened na cellulose ether nwekwara àgwà a. Maka ịdị mfe nke mkpuchi mkpuchi, a ga-eji nlezianya họrọ ụdị na ọnụọgụ cellulose ether. Maka mkpuchi, mgbe ị na-eji cellulose ether, enwere ike ịhọrọ ngwaahịa viscosity ọkara.
4.2 Njide mmiri: Cellulose ether nwere ike igbochi mmiri ịbanye ngwa ngwa na mkpụrụ osisi porous, nke mere na ọ nwere ike ịmepụta otu mkpuchi n'oge usoro ihe owuwu niile na-enweghị ihicha ya ngwa ngwa. Mgbe ọdịnaya nke emulsion dị elu, enwere ike imezu ihe achọrọ maka njigide mmiri site na iji obere cellulose ether. Njide mmiri nke agba na slurries na-adabere na ntinye nke cellulose ether na okpomọkụ nke ihe mkpuchi.
4.3 pigmenti kwụsiri ike na ihe ndozi: pigmenti na ihe nchacha na-ebuli elu. Iji mee ka agba ahụ dị n'otu ma kwụsie ike, ihe ndị na-eme pigmenti ga-adịrịrị n'ọnọdụ nkwụsịtụ. Ojiji nke cellulose ether nwere ike ime ka agba nwere ụfọdụ viscosity, ọ dịghịkwa mmiri ozuzo ga-eme n'oge nchekwa.
4.4 Adhesion na ike njikọ: N'ihi ezigbo njide mmiri na ntinye nke cellulose ether, adhesion dị mma n'etiti mkpuchi na mkpụrụ nwere ike ijide n'aka. MHEC na NaCMC nwere ezigbo adhesion adhesion na adhesion, n'ihi ya, ha na-adabara maka pulp akwụkwọ, ebe HEC adịghị mma maka nzube a.
4.5 Ọrụ colloid nchekwa: N'ihi hydrophilicity nke cellulose ether, enwere ike iji ya dị ka colloid nchebe maka mkpuchi.
4.6 Thickener: A na-eji cellulose ether eme ihe na agba latex dị ka ihe na-agba agba iji dozie viscosity ihe owuwu. Ọkara na elu viscosity hydroxyethyl cellulose na methyl hydroxyethyl cellulose bụ tumadi eji na emulsion paints. Mgbe ụfọdụ, ether cellulose nwekwara ike iji ọnụ na sịntetik thickeners (dị ka polyacrylate, polyurethane, wdg) imeziwanye ụfọdụ Njirimara nke latex agba na-enye latex agba nkwụsi ike otu.
Cellulose ethers niile nwere ezigbo njide mmiri na ihe na-eme ka ọ dị arọ, mana ụfọdụ ihe dị iche iche. Anionic cellulose ether, dị mfe ịmepụta nnu na-adịghị edozi mmiri na divalent na trivalent cations. Ya mere, e jiri ya tụnyere methyl hydroxyethyl cellulose na hydroxyethyl fiber, sodium carboxymethyl cellulose nwere adịghị mma na-eguzogide ọgwụ. Yabụ, enwere ike iji sodium carboxymethyl cellulose naanị n'ụdị agba latex dị ọnụ ala.
Methyl hydroxyethyl cellulose na methyl hydroxypropyl cellulose nwere ala shiee viscosity na elu surfactant Njirimara karịa hydroxyethyl cellulose, si otú ibelata ọchịchọ nke latex agba na splatter. Na carboxymethyl cellulose enweghị surfactant mmetụta.
Hydroxyethyl cellulose nwere njiri mara mma nke mmiri, obere nguzogide na-agbaze na ihe owuwu dị mfe na agba latex. E jiri ya tụnyere methyl hydroxyethyl na methyl hydroxypropyl cellulose, ọ nwere ndakọrịta ka mma na pigmenti, ya mere, a na-atụ aro ya maka agba silk latex, agba latex agba, mado agba, wdg.