Mune yakagadzirira-yakavhenganiswa mongwe, iyo yekuwedzera huwandu hwein cellulose ether yakaderera kwazvo, asi inogona kuvandudza zvakanyanya kuita kwekunyorova kwemotokari, uye inowedzera inowedzera inokanganisa kuita kwekuvaka kwemutumbi. Kusarudzwa zvine musoro kwe cellulose ana vana akasiyana siyana, zviyero zvakasiyana, madhigirii akasiyana emisangano uye akawedzera huwandu huchabatsira pakuvandudzwa kwekuita kweiyo yakaoma poda. Parizvino, zvakawanda masonry uye kupururudza motsi ane basa rekuchengetedza mvura, uye mvura slurry ichaparadzaniswa mushure memaminitsi mashoma ekumira. Kuchengetwa kwemvura kukosha kwekuita methyl cellelose ether, uye zvakare chiitiko icho vazhinji vemugadziri veimba vanogadzira mauto, kunyanya avo vari munzvimbo dzekumaodzanyemba vane tembiricha dzakakwirira, teerera. Zvinhu zvinokonzeresa kudzokorora kwemvura kwekuomesesa musanganiswa musanganiswa unosanganisira huwandu hweMC yakawedzera, iyo viscosity ye mc, iyo yakajeka yezvikamu uye tembiricha yenzvimbo yekushandisa.
1. Pfungwa
Cellulose ether is a synthetic polymer yakagadzirwa kubva kune yakasikwa cellerse kuburikidza nemakemikari kugadziridzwa. Cellulose ether ndiyo inobviswa kwemasikirwo cellulose. Iko kugadzirwa kwe cellulose ether kwakasiyana nePolythetic polymers. Yayo yakakosha zvinyorwa ndeye cellulose, iyo yakasikwa polymer yakaenzana. Nekuda kwekuva kunyanya kwechimiro chemasangano cellulose, cellulose pachayo haina kugona kuita nevamiriri evaera. Nekudaro, mushure mekurapa kwekuzvimba kwekuzvimba, iyo yakasimba maHydrogen maketani uye ngetani dzinoparadzwa, uye kuburitswa kweiyo hydroxyl boka rinova alkali alkali alkalal. Tora cellulose ether.
Zvivakwa zveCellulose anaTers vanovimba nerudzi rwevanhu, nhamba uye kugoverwa kwevatsidzike. Kugadziriswa kwe cellulose ana vana zvakare kunoenderana nerudzi rwevatsidzi, degree rekutsva, solubility uye zvinoenderana nekushandisa zvivakwa. Sekureva kwerudzi rwevatsidzi pane caomlecular cheni, inogona kugovaniswa muMonether uye yakasanganiswa ether. Iyo mc isu tinowanzo shandisa monoether, uye iyo HPMC yakasanganiswa ether. Methyll Cellulose ether MC ndiyo chigadzirwa mushure meiyo hydroxyl boka pane iyo glucose unit yemusikirwo cellucose cellxose inyatsonzi nzira. Icho chigadzirwa chakawanikwa nekutsiva chikamu cheiyo hydroxyl boka pane iyo unit neiyo nzira yeboka uye chimwe chikamu chine hydroxyprupropropyl group. Iyo formula yekugadzira ndeye [c6h7O2 (o) 3-mn (och2ch (och2ch (och2ch (och3) ch3]
Panyaya yekugadzirisa, inogona kukamurwa kuita ionic uye isiri-ionic. Mvura-yakashata isiri-ionic cellery ana ana ana ana inonyanya kuumbwa nenhevedzano maviri eAlkyl yeAlkyl uye hydroxielinkyl anaiters. Ionic cmc inonyanya kushandiswa mu synnthetic inodzika, machira ekudhinda uye kunyepa, chikafu uye kusaongorora kwemafuta. Non-Ionic MC, HPMC, HEMC, etc. Inonyanya kushandiswa mune zvekuvaka, mishonga yezuva nezuva, etces inoda mumiririri, STabilizer, inopararira uye firimu inogadzira mumiririri.
Chechipiri, kudzokorora kwemvura kwemasero ether
Kuchengeta kwemvura kwe Cellulose Etetera: Mukugadzirwa kwezvinhu zvekuvakisa, kunyanya kuomeswa poda dowuru, kunyanya mukugadzirwa kweanokosha motsi (yakagadziridzwa muto), chinhu chakakosha uye chakakosha chinhu.
Basa rakakosha remvura-solulable cellulose ecther vanonyanya kuve nematanho, imwe yakanakisa mvura, iyo iri pesvedzero yekuenderana uye yechitatu kudyidzana neiyo simende. Iyo yekuchengetwa kwemvura yemubatanidzwa ether inoenderana nemvura yekunyura kweiyo chigadziko cheshuwa, kuumbwa kweiyo dhudzi, iyo mvura yekudonha, uye nguva yekuisa yemvura. Kuchengetwa kwemvura kwemasero ether pachayo kunobva pane iyo solubility uye kushomeka kwemheremalose ether pachayo. Sezvo isu tese tinoziva, kunyangwe iyo cellulose molecular ine huwandu hukuru hwe hydratable hydratable yeHydratable yeHydratable
Iko kugona kwehydration yeiyo hydroxyl mapoka chete hakuna kukwana kuvhara iyo yakasimba hydrogen zvisungo uye van der waals mauto pakati pemamorikisi. Naizvozvo, zvinongotsvaira asi hazvipfuuri mumvura. Kana iyo substituent ikasvitswa mumatehwe echinyakare Iyo yakakura iyo isiriyo, iyo yakakura chinhambwe pakati pemamorekuru. Kureba kwacho. Mhedzisiro yakakura yekuparadza maHydrogen zvisungo, iyo cellulose ether inova mvura-solulable mushure meCellulose LATTE uye mhinduro inopinda, inogadzira mhinduro yepamusoro-viscosity. Kana tembiricha ikasimuka, hydration yePolymer inopera simba, uye mvura pakati pemaketani inodzingwa. Kana iyo yekushomeka mhedzisiro yakaringana, mamorekuru anotanga kuunganidzwa, achigadzira matatu-matatu emhando network network gl uye akapetwa kunze.
Zvinhu zvinokonzeresa kuchengetwa kwemvura kwerufu zvinosanganisira cellulose etter viscosity, kuwedzera huwandu, tenga zvakanaka uye kushandisa tembiricha.
Iyo yakakura iyo visikopa yemasero e cellulose ether, iri nani kudzokorora kwemvura. Viscosity izimendi yakakosha yeMC kuita. Parizvino, akasiyana maMC anogadzira anoshandisa nzira dzakasiyana uye zviridzwa kuyera iyo visikopa yeMC. Nzira huru dziri kuregera rotovisko, hooppler, ubbelohde neBrookfield. Nezve chigadzirwa chimwe chete, iwo mavhisipa anowana nzira dzakasiyana dzakasiyana-siyana dzakasiyana, uye vamwe vakatove misiyano yakawedzera kaviri. Naizvozvo, patinofananidza viscosity, chinofanira kuitwa pakati penzira dzakafanana bvunzo, kusanganisira tembiricha, rotrist, nezvimwe.
Kazhinji, iyo yepamusoro viscosity, iri nani kuchengetedza kwemvura. Nekudaro, iyo yepamusoro viscosity uye yakakwira iyo smecular uremu hweMC, kuderera kunoenderana mukushushikana kwayo kunokanganisa kusasimba kwekusimba uye kwekuvaka kwemutya. Yakakwira iyo viscosity, zvakanyatsojeka zvinokanganisa mudhaka, asi haina hukama zvakananga. Iyo yepamusoro iyo viscosity, iyo yakawanda viscous iyo mongwe yakanyorova, iri panguva yekuvakwa, inoratidzwa sekunamatira kune iyo scriper uye yakanyanya kuderera kune substrate. Asi hazvibatsiri kuwedzera simba rekuumbwa kweiyo yakanyorova dhaka pacharo. Munguva yekuvaka, kuita kwekurwisa-sag hakusi pachena. Pane kusapindirana, imwe yepakati uye yakaderera viscosity asi yakagadziridzwa methyl cellal celler maserimita kuita mukuvandudza simba rerudzi rwemutengesi.
Iyo yakakura huwandu hwe cellulose ether yakawedzerwa kune durari, iri nani kuchengetedza kwemvura, uye yakakwira viscosity, iri nani pakuita kwemvura.
Nezve size size, iyo yakanakisa iyo chidimbu, chiri nani kuchengetwa kwemvura. Mushure mekunge zvikamu zvizhinji zve cellulose ether kusvika mukusangana nemvura, pamusoro pazvo zvinopera uye zvinoumba gel kuputira zvinyorwa zvekudzivirira mamorekuru kuti uenderere mberi nekuenderera mberi. Dzimwe nguva hazvigone kugadzikana pamwe nekunyungudutswa kunyangwe mushure menguva refu kusimudzira, kuumba makore ekuwedzera furccucleent solution kana kuunganidzwa. Zvinokuvadza zvakanyanya kuganhurirwa kwemvura kwe cellulose ether, uye solubility chimwe chezvinhu zvekusarudza cellulose ether.
Fineness zvakare ndiyo yakakosha performance index ye methyl cellelose ther. Iyo MC inoshandiswa kuomarara poda inodiwa kuti ive poda, ine yakaderera mvura yezvinyorwa, uye iyo yakanaka zvakare inoda 20% ~ Iyo fineess inobata iyo solubility ye methyl cellelose ether. Coarse MC kazhinji, uye zviri nyore kunyungudika mumvura pasina kuunganidzira, asi iyo yekunyungudika inononoka, saka haina kukodzera kushandiswa mune yakaoma muhombodo muhombe. Mune yakaoma Powder Dorar, MC inopararira pakati pekusimbisa zvinhu zvakadai sekuunganidza, Filer Filer uye simende, uye chete hupfumi hwakakwana hunogona kudzivirira methyl cellulose ether agglomeration kana kusanganisa nemvura. Kana MC anowedzerwa nemvura kuti azungunuke iyo aglomirates, yakaoma kwazvo kuparadzira nekunyungudika.
Coarse fineeness ye mc haina kungosimbaradza, asi zvakare inoderedza simba remunharaunda romutema. Kana doro rakaoma rakadaro riri munzvimbo yakakura, kurapa kwekurapa kweiyo nzvimbo yakaoma yePowder yePowa ichave yakaderedzwa zvakanyanya, uye matsaula ichaonekwa nekuda kwekuporesa kwakasiyana. Kune iyo durwe rakakwenenzverwa nekuvaka muchina wekuvaka, izvo zvinodiwa kuti zvifeke zvakakwira nekuda kwenguva pfupi yekusanganisa.
Iyo yakajeka yeMC zvakare ine chekuita nezvokuita kwavo kuchengetwa kwemvura. Kazhinji, kuti methyl cellalose ana ana dencosity imwe chete asi yakasiyana-musina medu, pasi peiyo imwe mari yekuwedzera, iyo yakanakisa iyo inoyera iyo iri nani iyo yekuchengetedza mvura.
Kuchengetwa kwemvura kweMC kunoenderana ne tembiricha inoshandiswa, uye kuchengetwa kwemvura methyl cellulose theri kuderera nekuwedzera kwekushisa. Nekudaro, mune chaiyo zvinyorwa zvekushandisa, yakaoma poda inowanzoiswa kune inopisa subrates tembiricha yakaoma poda dhiri. Kuderera kwehuwandu hwekuchengetwa kwemvura kunotungamira kumanzwiro ari pachena kuti zvose zvinoshanda uye kupenga kuramba kwakanganiswa, uye zvinonyanya kutsoropodza kuderedza simba rekushisa pasi pemamiriro ezvinhu aya.
Kunyangwe methyl hydroxyll cellowset ether inowiriranwa parizvino iri pamberi pekuvandudza tekinoroji, kuvimba kwavo kwekushisa kwekushaiwa simba rekuita kweiyo yakaoma poda. Kunyangwe huwandu hwe methyl hydroxyll cellenchers Kuburikidza nedzimwe nzira yakakosha paMC, sekuwedzera huwandu hwekuregererwa, nezvimwe, iyo yekuchengetedza mvura inogona kuchengetedzwa pakupisa kwakanyanya, kuitira kuti inogona kupa zviri nani kuita mamiriro ezvinhu ane hutsinye.
3. Kukakavara uye iyo thisiotropy ye cellulose ether
Kukora uye iyo thisiotropy yeCellulose ECERE: Basa repiri reCellenose ether-deckening exymering e Cellulose Erther, Solution Convertation, Shear Kurovera, tembiricha nemamwe mamiriro ezvinhu. Iyo gelling midziyo yemhinduro yakasarudzika kuAlkyl cellelose uye yakagadziridzwa ayo yakagadziriswa. Iyo gelation zvivakwa zvine chekuita neyero yekutsiva, mhinduro yekusimbisa uye yekuwedzera. Kune hydroxylkyllk yakagadziridzwa inobva Zvekudzika viscosity mc uye hpmc, 10% -15% mhinduro mc uye hpmc inogona kugadziriswa 5%, apo hpmc inogona kungogadzirira 2% -3% mhinduro, uye kazhinji Iyo viscossity kuiswa kwe cellulose ether inoenderana ne1% -2% mhinduro.
Yakakwira molecular uremu cellulose ether ine yakanyanya kuremerwa kuita. Mumhinduro yakafanana, polymers ine huremu hwakasiyana hwemanyorerwe ane zvisizvo zvevakasiyana visikoka. Yakakwirira degree. Iyo target viscosity inogona chete kuwanikwa nekuwedzera huwandu hwakawanda hwehuwandu hwakareba hwemanyorerwe ecelose ether. Viscosity yayo ine zvishoma kutsamira pajecha ratehwe, uye iyo yepamusoro viscosity inosvika pakuvatisa viscosity, uye iyo inodiwa yekuwedzera huwandu idiki, uye iyo viscosity zvinoenderana nekubudirira kwekubudirira. Naizvozvo, kuti uwane kumwe kusimba, imwe huwandu hwe cellulose ether (kusunganidzwa kwemhinduro) uye mhinduro viscosity inofanira kuvimbiswa. Iyo tembiricha yemhedzisiro yemhindurowo zvakare inoderedza mutsara nekuwedzera kwekusangana kwemhinduro, uye geles pamhepo tembiricha mushure mekusvika pane imwe pfungwa. Iyo gelling yekuvhara yeHPMC yakakwira pakakwirira pamhepo tembiricha.
Kuenderana kunogona zvakare kuchinjirwa nekusarudza sizele size uye kusarudza cellulose ana ana madhigirii akasiyana ekugadziridzwa. Iyo inonzi iyo shanduko ndeyekuisa imwe nhanho yekutsiva kwehydroxylkylks mapoka ezvikamu zveSkeleton yeMC. Nekushandura kukosha kwenhamba yekutsiva kwevanhu vaviri vanopfuura, ndiko kuti, iyo DS kuenderana nekutsiva kweiyo nzira uye hydroxylkyl mapoka atinowanzo taura. Yakasiyana-siyana yekuita zvinodiwa zve cellulose ether inogona kuwanikwa nekuchinja huwandu hwekutsiva kwehuwandu hwevanhu vaviri vevatsidzi.
Ukama pakati pekushomeka uye kuchinjika: Kuwedzera kwemaserolose kukanganisa mvura yekudhakwa, kuchinja-bhurawufa yemvura uye simende ndeyekuita, iyo yakakwira dosage, iyo yakakura mvura yekunyika.
Cellulose ana ana anomererwa mune zvigadzirwa zvekuvakisa zvekuvakisa zvinofanirwa kunyungudutsira nekukurumidza mumvura inotonhora uye upe mukana wakakodzera wegadziriro yehurongwa. Kana ikapihwa imwe shear rate, ichiri kuyerera uye collidal block, iyo iri substandard kana isina kunaka mhando chigadzirwa.
Kune zvakare hukama hwakanaka hwemutsara pakati pehukama hweSEENT SAME uye DOSAGE YEMAHARA ECERULose EHER. Cellulose ether inogona kuwedzera kwazvo vhiza yemota. Iyo yakakura dosi, zvakanyatsonaka mhedzisiro. Yakakwira-viscosity cellulose ether mhinduro yemvura ine yakakwira thixotropy, iyo zvakare hombe hunhu hwe cellulose ether. Mhinduro dzemumvura dzeMC Polymers dzinowanzove nePseudoplastics uye isina-thixotropic fluidity pazasi pavo stel tembiricha, Pseudoplasticality inowedzera neyekuwedzera uremu kana kusunganidzwa kwemheremelle ether, zvisinei nerudzi rwetsiva uye degree rekutsiva. Naizvozvo, mheremalose etana emagrosity gracosity giredhi, hpmc, hemc, inogara ichiratidza zvimwe zvinhu zvechitsidzo kwenguva yakareba sekusangana uye tembiricha inogara ichichengetwa nguva dzose.
Matura emhando ikagadzirwa kana tembiricha yamutswa, uye zvakanyanya thisiotropic inoyerera inoitika. Yakanyanya kuderera uye yakaderera viscosity cellulose ana anairatidzira thixotropy kunyangwe pazasi pegomba tembiricha. Ichi chivakwa chinobatsira zvikuru kugadzirisa kwekuwedzera uye kusekerera mukuvakwa kwekuvaka moter. Zvinoda kutsanangurwa pano iyo yakakwira viscosity ye cellulose ether, iko zviri nani kuchengetwa kwemvura, asi kukwirira kwemvura, iyo inoenderana neyekuchinjika kwemhereme, uye kuderera kunoenderana mukushushikana kwayo, iyo ine kukanganisa kwakashata padanho rekusangana kwemota uye kuita kwekuvaka. Yakakwira iyo viscosity, iyo iri pachena iyo inoshamisa mhedzisiro pane dhaka, asi haina kuenzana. Vamwe vepakati uye vakaderera viscosity, asi iyo yakagadziridzwa cellulose ether ine zvirinani kuita mukuvandudza simba rerudzi rwerudzi rwemvura. Nekuwedzera kweViscosity, kuchengetwa kwemvura kwemasero ether kunovandudza. 4. Kudzokera kwe cellulose ether
Kudzoserwa kweCellulose Ether: Basa rechitatu reCellulose ether rekunonoka hydration maitiro eiyo simende. Cellulose ether endows dope neyakasiyana siyana zvinobatsira zvinhu, uye zvakare inoderedza kupisa kwehydration yekutanga yeSimende uye kunonoka iyo hydration deynamic maitiro eiyo simende. Izvi hazvina kunaka pakushandiswa kwemotokari munzvimbo dzinotonhora. Iyi mari yekudzorera inokonzerwa neyemushambadzi weCellulose ether mamorekuru pane hydration zvigadzirwa senge csh naCa (OH) 2. Nekuda kwekuwedzera kweiyo visikoka yemhinduro yemhinduro, iyo cellulose ether inoderedza kufamba kweiyi mhinduro, nekudaro kunonoka hydration maitiro.
Post Nguva: Kukadzi-04-2023