I-Carboxymethyl cellulose (CMC) ifumaneka emva kwe-carboxymethylation ye-cellulose. Isisombululo saso samanzi sinemisebenzi yokuqina, ukwenza ifilimu, ukudibanisa, ukugcinwa kwamanzi, ukukhuselwa kwe-colloid, i-emulsification kunye nokumiswa, kwaye isetyenziswe ngokubanzi kwi-petroleum, ukutya, amayeza, njl. cellulose ethers.Iselulosi yendalo yeyona polysaccharide isasazwe kakhulu kwaye ininzi kakhulu kwindalo, kwaye imithombo yayo ininzi kakhulu. zizityebi. Itekhnoloji yangoku yokuguqula i-cellulose igxile ikakhulu kwi-etherification kunye ne-esterification. I-Carboxymethylation luhlobo lwetekhnoloji ye-etherification.
iimpawu zomzimba
I-Sodium carboxymethyl cellulose (CMC) yi-anionic cellulose ether, enomgubo omhlophe okanye otyheli kancinane wefiber okanye imbonakalo yomgubo omhlophe, ongenavumba, ongenancasa, ongenatyhefu; ukunyibilika ngokulula emanzini abandayo okanye kumanzi ashushu, ukwenza isisombululo esicacileyo se-viscosity. Isisombululo singathathi hlangothi okanye i-alkaline encinci, ayinakunyibilika kwi-ethanol, i-ether, isopropanol, i-acetone kunye nezinye i-solvents eziphilayo, i-soluble kwi-60% yamanzi e-ethanol okanye isisombululo se-acetone. I-hygroscopic, i-stable to light and heat, i-viscosity iyancipha ngokunyuka kweqondo lokushisa, isisombululo sizinzile kwi-pH 2-10, i-pH iphantsi kwe-2, kukho imvula eqinile, kwaye i-viscosity iyancipha xa i-pH iphezulu kune-10. Iqondo lobushushu le-discoloration yi-227 ℃, iqondo le-carbonization yi-252 ℃, kunye noxinzelelo lomphezulu we-2% yesisombululo samanzi 71mn/n.
iimpawu zeekhemikhali
Ilungiselelwe ukusuka kwi-cellulose derivatives ye-carboxymethyl substituents, ukuphatha i-cellulose nge-sodium hydroxide ukwenza i-alkali cellulose, kwaye emva koko iphendule nge-monochloroacetic acid. Iyunithi ye-glucose eyenza i-cellulose inamaqela angama-3 e-hydroxyl anokutshintshwa, ngoko ke iimveliso ezinamaqondo ahlukeneyo anokufumaneka. Ngokomyinge, i-1 mmol ye-carboxymethyl yaziswa nge-1 g yobunzima obomileyo, obunganyibilikiyo emanzini kunye ne-asidi ye-dilute, kodwa inokudumba kwaye isetyenziswe kwi-ion exchange chromatography. I-Carboxymethyl pKa imalunga ne-4 emanzini acocekileyo kwaye malunga ne-3.5 kwi-0.5mol / L NaCl. I-acidic cation exchanger ebuthathaka kwaye idla ngokusetyenziselwa ukwahlula iiprotheni ezingathathi hlangothi kunye nesiseko kwi-pH>4. Ngaphezulu kwe-40% yamaqela e-hydroxyl athatyathelwa indawo ngamaqela e-carboxymethyl, anokuchithwa emanzini ukuze enze isisombululo esizinzileyo se-colloidal high-viscosity.
Injongo ephambili
I-Carboxymethyl cellulose (CMC) yi-flocculent powder emhlophe engeyotyhefu kwaye engenavumba kunye nokusebenza okuzinzileyo kwaye inyibilika ngokulula emanzini. Isisombululo saso esinamanzi silulwelo olungathathi hlangothi okanye lwe-alkaline olucacileyo lwe-viscous, lunyibilika kwezinye iiglues kunye nee-resin ezinyibilikayo emanzini, kwaye azinyibiliki. kwizinyibilikisi eziphilayo ezifana ne-ethanol. I-CMC ingasetyenziswa njenge-adhesive, thickener, suspending agent, emulsifier, dispersant, stabilizer, sing agent, njl.
I-Sodium carboxymethyl cellulose (CMC) yimveliso enemveliso enkulu, eyona isetyenziswa kakhulu kunye neyona nto isebenzayo phakathi kwe-cellulose ethers, eyaziwa njenge "industrial monosodium glutamate".
1. Isetyenziselwa ukugaya ioli kunye negesi yendalo, ukumba kakuhle kunye nezinye iiprojekthi
① Udaka oluqulathe i-CMC lunokwenza udonga lwequla lube yikeyiki ebhityileyo kwaye eqinileyo yokuhluza enokungeneka okuphantsi, okucutha ilahleko yamanzi.
② Emva kokongeza i-CMC eludakeni, i-drilling rig inokufumana amandla aphantsi okucheba, ukwenzela ukuba udaka lukwazi ukukhulula lula igesi ehlanganiswe kuyo, kwaye kwangaxeshanye, i-debris ilahlwe ngokukhawuleza emgodini wodaka.
③Ukugrumba udaka, njengolunye usasazo olumisiweyo, kunexesha elithile lobukho, kwaye ukongezwa kwe-CMC kungayenza izinze kwaye yandise ixesha lobukho.
④ Udaka oluqulethe i-CMC alufane luchaphazeleke ngumbumba, ngoko akuyomfuneko ukugcina ixabiso eliphezulu le-pH kunye nokusetyenziswa kwezinto zokulondoloza.
⑤ Gcina i-CMC njengesixhobo sokucoca ulwelo lokuhlambela udaka, esinokumelana nongcoliseko lweetyuwa ezahlukeneyo ezinyibilikayo.
⑥ Udaka oluqulathe i-CMC lunozinzo oluhle kwaye lunokunciphisa ilahleko yamanzi nokuba ubushushu bungaphezulu kwe-150℃.
I-CMC ene-viscosity ephezulu kunye neqondo eliphezulu lokutshintshela ilungele udaka olunoxinano oluphantsi, kunye ne-CMC ene-viscosity ephantsi kunye neqondo eliphezulu lokutshintshela lilungele udaka olunoxinano oluphezulu. Ukukhethwa kweCMC kufuneka kumiselwe ngokweemeko ezahlukeneyo ezifana nodidi lodaka, ummandla kunye nobunzulu bequla.
2. Isetyenziswa kwishishini lelaphu, lokuprinta kunye nokudaya. Ushishino lwamalaphu lusebenzisa i-CMC njengesixhobo sokulinganisa umsonto okhanyayo womqhaphu, uboya besilika, ifayibha yemichiza, edityanisiweyo kunye nezinye izinto ezomeleleyo;
3. Isetyenziswa kushishino lwephepha i-CMC ingasetyenziswa njenge-arhente yokugudisa umphezulu wephepha kunye ne-agent yokulinganisa kushishino lwephepha. Ukongeza i-0.1% ukuya kwi-0.3% ye-CMC kwi-pulp kunokwandisa amandla e-tensile yephepha nge-40% ukuya kwi-50%, ukwandisa ukugqabhuka koxinzelelo nge-50%, kunye nokwandisa ukuguqa ngama-4 ukuya kwa-5 amaxesha.
4. I-CMC ingasetyenziswa njenge-adsorbent yokungcola xa ifakwe kwii-synthetic detergents; iikhemikhali mihla ezifana kushishino intlama yamazinyo CMC glycerin isisombululo aqueous isetyenziswa njengesiseko intlaka for intlama yamazinyo; ishishini lamayeza lisetyenziswa njenge-thickener kunye ne-emulsifier; Isisombululo samanzi se-CMC sijiyile kwaye sisetyenziselwa ukusetyenzwa kweeminerali ezidadayo, njl.
5. Kwishishini le-ceramic, linokusetyenziswa njenge-adhesive, plasticizer, i-agent yokumisa i-glaze, i-agent yokulungisa umbala, njl.
6. Isetyenziselwa ukwakha ukuphucula ukugcinwa kwamanzi kunye namandla
7. Isetyenziswa kwishishini lokutya. Ushishino lokutya lusebenzisa i-CMC eneqondo eliphezulu lokutshintsha njenge-thickener ye-ayisikrimu, ukutya okunkonkxiweyo, ii-noodles eziphekwe ngokukhawuleza, kunye ne-stabilizer ye-foam yebhiya, njl
8. Ishishini lamachiza likhetha i-CMC ene-viscosity efanelekileyo njenge-tablet binder, i-disintegrant, kunye ne-arhente yokumisa ukunqunyanyiswa.
Ixesha lokuposa: Nov-03-2022