He aha te tono Cellulose Ether?

Ka whakaurua te whakarite ether cellulose, te mahi cellulose ether me tetono cellulose ether, ina koa te tono i roto i nga paninga.
Kupu matua: cellulose ether, mahi, tono
He pūhui macromolecular māori te Cellulose. Ko tona hanganga matū he macromolecule polysaccharide me te β-glucose anhydrous hei mowhiti turanga. Kotahi te roopu hydroxyl tuatahi me nga roopu hydroxyl tuarua tuarua kei runga i ia mowhiti turanga. Na roto i tana whakarerekētanga matū, ka taea te whiwhi i te raupapa o te cellulose derivatives, ko te cellulose ether tetahi o ratou. He maha nga ahumahi e whakamahia ana nga eter cellulose.

1.Whakarite

Ka whiwhihia te ether cellulose ma te tauhohenga i te cellulose ki te NaOH, katahi ka tauhohe ki nga momo monomers mahi penei i te monochloromethane, ethylene oxide, propylene oxide, me etahi atu, me te horoi i te tote hua me te konutai cellulose.

2.Mahinga

2.1 Te ahua: He ma, he miraka ranei te cellulose ether, he hongi, he kore paitini, he paura kirikiri me te wai, he ngawari ki te tango i te makuku, ka memeha ki roto i te colloid pumau i roto i te wai.
2.2 Ionicity: MC, MHEC, MHPC, HEC he nonionic; NaCMC, NaCMHEC he anionic.
2.3 Etherification: Ko nga ahuatanga me te tohu o te etherification o te etherification ka pa ki te mahi o te cellulose ether i te wa o te etherification, penei i te whakarewatanga, te kaha o te hanga kiriata, te kaha hononga me te tote tote.
2.4 Wairewa: (1) Ka whakarewahia te MC ki te wai matao, karekau ki te wai wera, ka memeha hoki ki etahi whakarewa; Ko te MHEC he wairewa i roto i te wai matao, karekau i te wai wera me nga whakarewa pararopi. Heoi, ka whakamahana te wairewa wai o MC me MHEC, ka heke te MC me te MHEC. MC precipitates i 45-60°C, i te pāmahana rerenga o MHEC etherified whakaurua kake ki te 65-80°C. Ka whakahekehia te pāmahana, ka rewa ano te rerenga. (2) HEC, NaCMC, me te NaCMHEC he wairewa i roto i te wai ahakoa te pāmahana, engari karekau i roto i nga whakarewa pararopi (me etahi ohanga).
2.5 Te pupuhi kua roa: Ko te cellulose ether he pupuhi whakaroa i roto i te wai pH kore, engari ka taea e ia te whakakore i tenei pupuhi roa i roto i te wai pH kawakore.
2.6 Viscosity: Ka rewa te cellulose ether ki te wai i te ahua o te colloid, a ka whakawhirinaki tona pokey ki te tohu o te polymerization o te cellulose ether. Kei roto i te otinga nga macromolecules hydrated. Na te weriweri o nga macromolecules, he rereke te rere o nga otinga ki tera o nga wai o Newtonian, engari ka whakaatu i te whanonga ka huri ki te kaha kutikuti. Na te hanganga macromolecular o te cellulose ether, ka tere te piki o te pokey o te otinga ki te piki o te kukū me te heke tere i te pikinga o te pāmahana.
2.7 Te pumau o te koiora: Ka whakamahia te cellulose ether i roto i te waahanga wai. I te wa e noho ana te wai, ka tipu te huakita. Ko te tipu o te huakita ka arai ki te hanga huakita enzyme. Ka wawahia e te enzyme nga hononga waeine anhydroglucose kaore i whakakapia e tata ana ki te cellulose ether, ka whakaiti i te taumaha ngota o te polymer. No reira, ki te pupurihia te wairewa wai aqueous cellulose ether mo te wa roa, me tapiri he rongoa ki reira. He pono tenei ahakoa me nga ethers cellulose antimicrobial.

3. Te kaupapa

3.1 Oilfield: Ko te NaCMC te nuinga o te whakamahi i te waahi hinu hinu, a ka whakamahia ki te hanga paru hei whakanui ake i te potata me te whakaiti i te mate wai. Ka taea e ia te aukati i nga momo parahanga tote whakarewa me te whakapai ake i te whakaora hinu. Ko te konutai carboxymethyl hydroxypropyl cellulose me te konutai carboxymethyl hydroxyethyl cellulose he pai nga kaihoko keri paru paru me nga rauemi mo te whakarite i nga wai whakaoti, me te tere o te pulping, te tote pai me te tote konupūmā, He pai te kaha o te piki-nui me te paanga o te pāmahana (160 ° C). He pai mo te whakarite wai oti o te wai hou, te wai moana me te wai tote kukū. Ka taea te hanga hei wai oti o nga momo kiato (1.03-1.279/Cm3) i raro i te taumaha o te konupūmā pūhaumāota, ā, he pōkākā anō tōna. A he iti ake te mate o te wai, he pai ake te kaha o te kaha ki te whakaheke i te wai, me te kaha ki te whakaheke i te wai o te hydroxyethyl cellulose, he taapiri pai mo te whakanui ake i te whakaputa hinu.
3.2 Te hanga uku: Ka taea te whakamahi i te NaCMC hei aukati, hei pupuri i te wai, hei whakakaha me te here, kia pai ai te ahua o nga hua karaehe me te kore he koha me nga mirumiru.
3.3 Te Hanga Pepa: Ka whakamahia te NaCMC mo te rahinga o roto me waho me te whakakii me te pupuri i te mata o te pepa, ka taea te whakakapi i te casein, kia ngawari ai te kuhu o te waituhi tuhi me te marama o nga taha. I roto i te hanga pepapātū, ka taea te whakamahi hei dispersant pigment, tackifier, stabilizer me te kaihoko rahi.
3.4 Kakano: Ka whakamahia te NaCMC hei whakakapi mo te witi me te rahi i roto i te umanga kakano, a ehara i te mea ngawari ki te paheketanga me te pirau. I te wa e ta ana me te tae, kaore he take ki te whakakore, a ka taea e te tae te whiwhi i tetahi colloid i roto i te wai, e whakanui ana i te hydrophilicity me te urunga o te tae. I te wa ano, na te iti o te huringa i roto i te viscosity, he ngawari ki te whakatika i te rereketanga o te tae. Ka whakamahia te CMHEC hei kaitakawaenga mo te tuhi me te tae o te penupenu, me te toenga iti me te nui o te tae o te tae, a, ko te kounga o te tuhi me te tae he nui ake i nga hua o te katote me te kore-ionic cellulose ether.
3.5 Tupeka: Ka whakamahia te NaCMC mo te honohono o te tupeka. He tere te memeha, he kaha te kaha hononga, he painga ki te whakapai ake i te kounga o te hikareti me te whakaiti i nga utu.
3.6 Paahua: Ko te NaCMC te mahi ki te whakamarara, ki te whakatarewa me te whakapumau i nga hua whakapiri o nga rawa parakore totoka, ka whai waahi ki te whakapakeke, te whakamarara me te whakakotahi i roto i te wai, te whakaehunga ranei. Ka taea hoki te whakamahi hei emulsifier, hei whakakaha me te whakapumau mo te hinu me te shampoo.
3.7 Pūhiko: Ko te NaCMC he tino parakore, he pai te waikawa me te tote, ina koa he iti te rino me te ihirangi whakarewa taimaha, a he tino pumau te colloid, he pai mo nga pākahiko alkaline me nga pākahiko zinc-manganese.
3.8 Te peita wai: HEC me te MHEC ka taea te whakamahi hei whakapumau, hei whakapouri me nga taonga pupuri wai mo nga peita taherapa. I tua atu, ka taea hoki te whakamahi hei dispersants, tackifiers me nga kaihoko hanga kiriata mo nga peita ciment tae.
3.9 Nga mea hanga whare: ka taea te whakamahi hei whakamarara, hei pupuri i te wai me te whakamaroke mo te raima me te kumete o te paparanga gypsum o raro me te papa o raro sima, me nga taputapu raima whenua.
3.10 Kiriata: Ka taea te whakamahi hei whakapiringa o te kanapa.
3.11 Hoahoahoa: Ka taea te whakamahi hei kaikawe anti-adhesion mo te whakapakeke i te paru.
3.12 Te whakamararatanga whakaehunga: ka taea te whakamahi hei whakapumau me te whakamaroke.
3.13 Te Toothpaste: Ka taea te whakamahi NaCMHPC hei whakapumau mo nga whakapiringa toothpaste. He pai nga ahuatanga thixotropic, he pai te ahua o te toothpaste, mo te wa roa kaore he rereke, he rite te ahua me te reka o te reka. Ko te NaCMHPC he pai ake te tote me te aukati waikawa, a he tino pai ake te paanga o te CMC.

4. Te tono i roto i te paninga me te whakapiri

He tino nui te mahi a te cellulose ether i roto i te paninga me te whakapiri. Me tapiri noa te tapeke o te tauira O. Ko te 2% ki te 0.5% ka taea te matotoru, te pupuri i te wai, te aukati i nga poaka me nga whakakii kia kore e tau, me te whakanui ake i te piri me te kaha hononga.
4.1 Viscosity: Ko te pokey o te wairewa wai cellulose ether ka huri ki te kaha kutikuti, me te peita me te whakapiri kua whakamaroketia ki te cellulose ether ano hoki tenei ahuatanga. Mo te ngawari o te tono o te paninga, me ata whiriwhiri te momo me te nui o te cellulose ether. Mo nga paninga, i te wa e whakamahi ana i te cellulose ether, ka taea te kowhiri i nga hua viscosity reo.
4.2 Te pupuri i te wai: Ka taea e te Cellulose ether te aukati i te makuku kia kore e tere te uru ki roto i te taputapu maiengi, kia taea ai te hanga i tetahi paninga rite i te wa o te hangahanga katoa me te kore e whakamaroke tere. A, no te he tiketike te ihirangi o te whakaehunga, te whakaritenga o te pupuri wai e taea te whakatau i te whakamahi iti cellulose ether. Ko te pupuri wai o nga peita me nga slurries ka whakawhirinaki ki te kukū o te cellulose ether me te pāmahana o te taputapu pani.
4.3 Nga poaka me te whakakī: Ko nga kauruku me te whakakī ka kaha ki te heke. Kia mau tonu te ahua o te peita me te mau tonu, me noho tarewa tonu nga whakakī poaka. Ma te whakamahi i te cellulose ether ka taea e te peita te whai pokey, karekau he ua i te wa e rokiroki ana.
4.4 Adhesion me te kaha hononga: Na te pai o te pupuri i te wai me te piri o te cellulose ether, ka taea te whakapumau i te pai o te piri i waenga i te paninga me te tïpako. Ko te MHEC me te NaCMC he tino pai te whakapiri maroke me te whakapiri, no reira he tino pai mo te penupenu pepa, engari kaore he pai mo te HEC mo tenei kaupapa.
4.5 Te mahi colloid tiaki: Na te hydrophilicity o te cellulose ether, ka taea te whakamahi hei colloid tiaki mo nga paninga.
4.6 Matotoru: Ka whakamahia nuitia te Cellulose ether i roto i te peita taherapa hei whakakaha ki te whakatika i te pokey hanga. Ka whakamahia te nuinga o te hydroxyethyl cellulose me te methyl hydroxyethyl cellulose ki nga peita whakaehunga. I etahi wa ka taea hoki te whakamahi tahi me nga kaitao wai (penei i te polyacrylate, polyurethane, me etahi atu) hei whakapai ake i etahi ahuatanga o te peita taherapa me te whakapumautanga o te peita taherapa.
He pai te pupuri i te wai me te whakakaha o nga etera cellulose, engari he rereke etahi o nga ahuatanga. Anionic cellulose ether, he ngawari ki te hanga i nga tote wai-kore me nga cation divalent me te trivalent. No reira, ka whakatauritea ki te methyl hydroxyethyl cellulose me te muka hydroxyethyl, he ngoikore te atete o te konutai carboxymethyl cellulose. No reira ka taea anake te whakamahi i te konutai carboxymethyl cellulose i roto i nga hanga peita taherapa iti.
Ko te methyl hydroxyethyl cellulose me te methyl hydroxypropyl cellulose he iti ake te pokey kutikuti me te teitei ake o nga taonga surfactant atu i te hydroxyethyl cellulose, na reira ka whakaitihia te ahua o nga peita taherapa ki te marara. A ko te carboxymethyl cellulose karekau he painga o te hau.
Ko te Hydroxyethyl cellulose nga ahuatanga o te rere pai, he iti te parenga paraihe me te hanga ngawari ki te peita taherapa. Ka whakatauritea ki te methyl hydroxyethyl me te methyl hydroxypropyl cellulose, he pai ake te hototahi ki nga poaka, na reira ka tūtohutia mo te peita hiraka taherapa, peita taherapa tae, whakapiri tae, aha atu.