Cellulose ether is a polymer inoenderana neye ether chimiro chakagadzirwa nemheremalose. Imwe neimwe glucosyl mhete muCellulose MacromoleCucu Icho chigadzirwa umo hydrogen yeboka reHydroxyl muCellulose Polymer inotsiviwa neHydrocarbon Boka. Cellulose is polyhydroxy polymer inowanzoitika kuti hapana mbichana kana kunyungudika. Mushure mekutsausa, cellulose inoshatisa mumvura, Dilute Alkali solution uye organic solvent, uye ine thermoplastication.
Cellulose is polyhydroxy polymer inowanzoitika kuti hapana mbichana kana kunyungudika. Mushure mekutsausa, cellulose inoshatisa mumvura, Dilute Alkali solution uye organic solvent, uye ine thermoplastication.
1.nature:
Iyo solubility ye cellulose mushure mekuchinja kwekuchinja zvakanyanya. Inogona kunyungudutswa mumvura, dilute acid, dilute Alkali kana organic solvent. Iyo solubility inowanzoenderana nezvinhu zvitatu: (1) Hunhu hwemapoka akaunzwa, iyo yakakura boka, uye iro rakadzika salublity yeboka, zviri nyore cellulose ther yekunyungudika mumvura; (2) iyo degree rekutsiva uye kugoverwa kwemapoka edzitsinho mumacromolecule. Vazhinji cellulose etinter vanongogona kunyungudika mumvura pasi peimwe dhigiri rekutsiva, uye degree rekutsiva riri pakati pe0 ne3; . Iyo yakaderera iyo degree rekutsiva iyo inogona kunyungudika mumvura, iyo yakafara huwandu. Kune marudzi mazhinji emaserolose ana ana vana nemari yakanaka kwazvo, uye ivo vanoshandiswa zvakanyanya mukuvaka, simende, chikafu, chidimbu, pendi, mapepa, mapepa emapepu uye mamwe maindasitiri.
2. Zvikurire:
China ndiyo yakanyanya kugadzirwa kwepasirese uye vatengi ve cellulose ether, ine avhareji yekukura kwegore rinopfuura makumi maviri muzana. Sekureva kwenhamba dzekutanga, pane anenge makumi mashanu cellulose Ertherction Bonesia muChina , Zhejiang, Shanghai nedzimwe nzvimbo.
3. Kuda:
Muna 2011, China yeCMC yekugadzira mari yekugadzira yaive anenge mazana matatu ezviuru ematani. Nekuwedzera kudiwa kwemhando yepamusoro mheremalo cell-emaleksocalose ana ana maindasitiri akadai sekurapa, chikafu, uye zviyero zvezuva nezuva kuti mimwe mhereme zvigadzirwa zvimwe kunze kweCMC iri kuwedzera. . Pac ichiri mukukurudzirwa uye application nhanho muChina. Nekuvandudzwa kweminda yakakura yegungwa uye kukura kwezvinhu zvekuvakisa, chikafu, makemikari uye mamwe maindasitiri, huwandu hwePac ari kuwedzera gore rimwe chete rinodarika zviuru gumi.
4. Kugadziriswa:
Zvinoenderana nemakemikari mamiriro ekugadzirisa kwevatsidzike, vanogona kukamurwa kuita anonic, caticis uye nonition they anaitani. Zvichienderana neEthylation Agent yakashandiswa, kune methyl cellulose, hydroxyl methyl cellyl cellyl cellelose, Benzyl Cellulose, Benzyl Cellulose, Benzyl Cellyl Cellulosel Cellulosel Cellulose. " CarboxyMethyl HydroxytHyl Cellulose uye phenyl Cellulose, etc. Methyl Cellelose uye Etiyl Cellulose anoshanda zvakanyanya.
Methylcellulose:
Mushure mekunge machira akanyatsorwadziswa ane alkali, cellulose ether anogadzirwa kuburikidza neyekutevedzana kwemaitiro ne methane chloride seyedenda. Kazhinji, iyo degree rekutsiva ndeye 1.6 ~ 2.0, uye iyo solubility yakasiyana nemadhigirii akasiyana ekutsiva. Izvo ndezvevasina-ionic cellulose ether.
. Mhinduro yaro yemvura yakagadzikana kwazvo mune huwandu hwePH = 3 ~ 12. Iyo ine kuwirirana kwakanaka ne starch, guar gum, nezvimwewo uye vazhinji surfachan. Kana tembiricha ichisvika kumhepo tembiricha, gelation inoitika.
. Kazhinji, kana huwandu hwehuwandu hwakakura, hushoma hushoma, uye visikoka yakakura, iyo mwero wekuchengetwa kwemvura wakakwira. Pakati pavo, huwandu hwekuwedzera hunonyanya kuitwa pane iyo yekuchengetwa kwemvura, uye mwero weViscosity haina kuenzana zvakananga kusvika padanho rekuchengetera mvura. Iyo yekunyungudika chiyero inonyanya kuenderana neiyo degree rekushandurwa kwepasi kweCellulose zvimedu uye tangi. Pakati peiyo metherulose methelose erinculose uye methyl cellulose uye hydroxyprusll
. Kazhinji, kukwirira kwakanyanya, kwakaipisisa kuchengetwa kwemvura. Kana tembiricha inovhuvhuta 40 ° C, kuchengetwa kwemvura methyl cellulose kuchave kuderedzwa zvakanyanya, kukanganisa zvakanyanya kuvakwa kwemutya.
. "Kunamatira" pano kunoreva kusungwa kwesimba kwakanzwa pakati pechishandiso cheMushandi uye substate, ndiko kuti, iyo Shear Ristance yerudzi. Kunamatira kwakakwira, kurwisa Shefu kwakakura kwakakura, uye simba rinodiwa nevashandi vari mukati mekushandiswa kwakakura zvakare, uye kuita kwekuvaka kune murombo. Iyo yekubatanidza ye methyl cellelose iri pane yepakati chikamu mu cellulose ether zvigadzirwa.
Hydroxypronylmethylcellose:
Hydroxyprusyl methylcellose ndeye cellulose akasiyana-siyana ndeayo yekubuda uye kushandiswa kuri kuwedzera nekukurumidza. Icho chisiri-ionic cellulose yakasanganiswa ether yakagadzirwa kubva kukotoni yakanatswa mushure mekunge alkalization, kushandisa profyl Iyo degree rekutsiva kazhinji 1.2 ~ 2.0. Zvivakwa zvayo zvinosiyana zvichienderana nehuremu hwezvemukati medu kune hydroxyprupyl zvemukati.
(1. Asi tembiricha yayo yegungwa mumvura inopisa yakakwirira zvakanyanya kupfuura iyo ye methyl cellulose. Iyo solubility mumvura inotonhora inovandudzwa zvakare yakaenzaniswa ne methyl cellulose.
. Tembiricha inokanganisawo zvavakaita, sekuwedzera kwekuwedzera, viscosity inoderera. Nekudaro, pesvedzero yeiyo yepamusoro viscosity uye tembiricha yakaderera pane iyo ye methyl cellulose. Kugadziriswa kwayo kwakasimba kana kuchengetwa pamhepo tembiricha.
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. Caustic soda uye lime mvura ine zvishoma kushanda pane zvayo kuita, asi Alkali inogona kukurumidza kukurumidza kupaza uye zvishoma kuwedzera viscosity yayo. Hydroxyprupyl methylcellose yakachengetwa kune zvakajairika kumaronda, asi kana kusungwa kwemhinduro kwakakwirira, iyo visikopa yehydroxyproslose mhinduro inowanzowedzera kuwedzera.
. Senge polyvinyl doro, starch ether, miriwo gamu, nezvimwe.
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HydroxytHyl Cellulose:
Izvo zvinogadzirwa kubva pakunyatsonatswa? Degree rayo rekutsiva kazhinji 1.5 ~ 2.0. Iyo ine hydrophilikuti yakasimba uye iri nyore kutora unyoro.
(1. Kugadziriswa kwayo kwakasimba pakupisa kwakanyanya pasina gomba. Inogona kushandiswa kwenguva yakareba iri pasi pekupisa kwakanyanya mudhaka, asi kuchengetwa kwemvura kwayo kwakaderera pane iyo ye methyl cellulose.
(2. Kupararira kwayo mumvura kuri kuipa zvishoma pane iyo ye methyl cellulose uye hydroxypruppropyl methyl cellulose.
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(4) kuita kweHydroxytHyl CelluloseYakagadzirwa nemamwe mabhizinesi epamba zviri pachena kuti yakaderera pane iyo ye methyl cellelose nekuda kwemvura yayo yakakwira uye yakakwira yechiyero.
(5. Pakushambadzira kweanenge 40 ° C, nyoro inogona kuitika mukati memazuva matatu kusvika mashanu, iyo ichakanganisa kuita kwayo.
Carboxymethyl Cellulose:
LOANS Cellulose ether inogadzirwa kubva kune yakasikwa mafaira (machira, nezvimwewo) mushure mekurapwa kweAlkali, kushandisa sodium monochloroacetate se etteting menochloroacetate se etteting menochlorocade Dhigirii rekutsiva kazhinji kazhinji 0.4 ~ 1.4, uye kuita kwayo kwakanganiswa zvakanyanya neiyo degree rekutsiva.
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. Kana tembiricha ichidarika 50 ° C, iyo viscosity haina kuchinjika.
(3) Kugadzikana kwayo kunokanganiswa zvikuru naPh. Kazhinji, inogona kushandiswa mune gypsum-based moturu, asi kwete mumutero-based moter. Kana alkaline yakawanda, icharasikirwa newiscosity.
(4) Kuchengetwa kwemvura kwayo kuri kuderera kupfuura methyl cellelose. Iyo ine mari yekudzosera pane gypsum-based dours uye inoderedza simba rayo. Nekudaro, mutengo weCarboxyMethyl Cellerose akanyanya kuderera pane iyo ye methyl cellulose.
Cellulose alkyl ether:
Mumiriri anomiririra methyl cellelose uye ethyl cellulose. Mukugadzirwa kwemaindasitiri, methyl chloride kana ethyl chloride inowanzoshandiswa semumiriri wekuchinja, uye kuita kwacho kwakatevera:
Mune formula, r inomiririra Ch3 kana C2H5. Alkali constontration haingori chete neyero yekuziya, asi zvakare inokanganisa kushandiswa kweAlkyl Mersides. Iyo yakadzika iyo alkali yekusimbisa, iyo yakasimba iyo hydrolysis yeiyo alkyl halide. Kuti uderedze kushanduka kwekunyengedza mumiririri, iyo alkali yekushamwaridzana inofanira kuwedzerwa. Nekudaro, apo alkali yekushamwaridzana yakanyanya, yekuzvimba kwemasero yakaderedzwa, iyo isingakwanise kuita shanduko yekutsika, uye degree rekushatirisa rinodzikira. Nechinangwa ichi, chakatarisana nengozi kana solid liyo inogona kuwedzerwa panguva yekuita. Iyo yekugadzirisa inofanirwa kuve neyako yakanaka yekukurudzira uye yekubvarura mudziyo kuitira kuti Alkali inogona kugoverwa zvakanyanya. Methyl cellulose anoshandiswa zvakanyanya seanonamata uye anodzivirira kuti atove nembeu, kuumbwa kwechidhori, kugadzirwa kwechidhori, kugadzirwa kweCeramic, uye kusanganisa kuvezwa kwakashandiswa kudzora mamiriro acho Nguva uye wedzera simba rekutanga, etccc. EtHyl Cellulose zvigadzirwa zvine simba rakanyanya simba, kuchinjika, kupisa kurwisa uye kutonhora kuramba. Yakadzika-yakatsiva TEFYL Cellulose ine mvura uye Dilute Alkaline Solutions, uye zvigadzirwa zvakakwirira-zvakadzika zvinonyangadza mune yakawanda organic sol. Iyo ine kuwirirana kwakanaka neye dzakasiyana-siyana meso uye mapurasitiki. Inogona kushandiswa kugadzira mapurasitiki, mafirimu, mahuremu, anoshambadzira uye kuunganidza mishonga yekukara, Alkyl kune hydroxylkyl mapoka.
Cellulose hydroyiylkyl ether:
Vamiriri vane hydroxythyl cellulose uye hydroxypruppropyl cellulose. Eteraginging vamiririri ndeye epoxides yakadai se ethylene oxide uye profilyo oxide. Shandisa acid kana chigadziko secatalyst. Kugadzirwa kwemaindasitiri ndiko kuita alkali cellulose neEtheralese mumiririri: HydroxytHyl Cellench Hydroxypruppropyl Cellulose ine yakakwira substitution kukosha inongova inongova mumvura inotonhora asi kwete mumvura inopisa. Hydroxethyl Cellulose inogona kushandiswa seyakavheneka kwejasi reLatex Iko kushandiswa kwehydroxypruppropyl cellulose kwakafanana neiyo yeiyo hydroxytlyl cellulose. HydroxyPropyl Cellulose neyakaderera substitution kukosha inogona kushandiswa seye mishonga yekuwedzera, iyo inogona kuve neese inosunga uye yekuvhara zvinhu.
CarboxyMethyl Cellalose, iyo Chirungu ichi chidimbu CMC, zvinowanzorerwazve mune fomu yemunyu. Iyo yekuzunza mumiririri ndeye monochloroacetic acid, uye kuita kwacho kwakatevera:
Carboxymethyl cellelose ndiyo inonyanya kushandiswa mvura-soluble cellulose ether. Munguva yakapfuura, yainyanya kushandiswa sedhirowa yekudhira, asi iko zvino kwave kuchishandiswa sekuwedzera kweshanduro, nepepa rekuchengetera karession.
Polyanionic Cellulose (Pac) ndeye ionic cellulose ether uye iri yakakwira-yekupedzisira kutsiva chigadzirwa che carboxymeyl cellever (cmc). Ichena, kubva-chena kana zvishoma yero poda kana granule, isina chepfu, isina kugadzikana, iri nyore kupaza tarisiro, ine hupombwe kuparadza kudzikisira uye kuramba kwemunyu, uye zvinhu zvakasimba zvinwiwa zveantibacterial. Hapana nyoro uye kuora. Iyo ine maitiro ekuchena kwakanyanya, akakwira dhigirii rekutsiva, uye kugoverwa kwunifomu kwevatsidzike. Inogona kushandiswa seBinder, Thickener, Rheology Modifier, Flipension Stabilizer, etc. Polyanionic Cellulose.
Cyanoethyl Cellulose ndiyo iyo yekuita chigadzirwa che cellulose uye acryllonitrile pasi peiyo cartalis yeAlkali.
Cyanoethyl Cellulose ane yakakwira dielectric inogara ichiramba uye yakaderera kurasikirwa uye inogona kushandiswa seye singin matrix ye phosphor uye magetsi magetsi. Yakadzika-yakatsiva Cyanoethyl Cellalose inogona kushandiswa sepepa rekusimbisa kweshanduko revashanduri.
Doro rakakwirira rakakwirira ersitty oters, Alkenyl rin'ters, uye vanonhuwira vanonhuhwirira zvavakatarwa, asi havana kushandiswa mukuita.
Nzira dzekugadzirira dze cellulose ether inogona kukamurwa kuita nzira yemvura yepakati, solvent nzira, iyo nzira yakasimba, iyo nzira yegedhi, iyo nzira yemifananidzo uye musanganiswa wepamusoro nzira.
5.prentention Pfungwa:
Iyo yakakwira α-cellulose pulp yakanyoroveswa neAlkaline Solution yekuzvimba kwazvo kuti iparadze marefu, gadzira alkali cellulose, uye wozoita neAtherali Cellense, uye wozoita neEthisation mumiriri kuti awane cellulose ether. Ettreifiging amiririri inosanganisira hydrocarbon hersides (kana shungu), epoxides, uye α uye β isina kujairika makompoto ane electron accelors.
6.Bastic masangano:
Admixture anotamba yakakosha basa mukuvandudza mashandiro ezvivakwa kuomesa-kwakasanganiswa dhaka, uye account yeanopfuura makumi mana muzana emutengo wemutengo wakaoma-wakasanganiswa. Chikamu chakakura chechiitiko mumusika wemusika chinopihwa nevatorwa nevatorwa, uye chirevo chechigadzirwa chakapihwawo nemutengesi. Nekuda kweizvozvo, mutengo wezvigadzirwa zvakaoma-mongwe zviripo zvakakwirira, uye zvakaoma kugutsikana zvakajairika masonry uye kupururudza motsi ane huwandu hwakakura uye huwandu hwakawanda. Zvigadzirwa zvepamusoro-zvakadzika zvinodzorwa nemakambani ekunze, uye zvakaoma-zvakasanganiswa Vagadziri vane purofiti yakaderera uye mutengo usina kunaka wekutadza; Iko kushandiswa kweAdmintures kunoisa kurongeka kwakarongeka uye kwakarongedzwa kutsvagisa, uye zvinotevera zvisingaonekwe mafomula.
Mvura Kuchengeta Mumiriri ndeyekushambadzira kusanzwisisika kwemvura yekuchengetedza kwemvura kwekuita kwemvura yakaoma-yakavhenganiswa, uye zvakare imwe yekiyi yekubvumirana kuti uone mutengo wechero rakaoma-rakavhenganiswa. Basa guru recellulose etherKuchengeta kwemvura.
Cellulose ether is a general izwi renhevedzero zvigadzirwa zvakagadzirwa nekuita kweAlkali cellulose uye kuenzura mumiririri pasi pemamwe mamiriro ezvinhu. Alkali cellulose inotsiviwa nekusiyana kwekunyengedza vamiririri kuti vawane akasiyana cellulose eter. Maererano neIonization zvivakwa zvevakatsauka, cellaulose ethingi vanokamurwa kuita mapoka maviri: ionic (senge carboxyMethyl cellemellose) uye nonionic (senge methyl cellalose). Maererano nerudzi rwetsiva, cellulose ether inogona kukamurwa muMonether (senge methyl cellulose) uye yakasanganiswa ethyropropropyl methyl cellelose). Sekureva kwakasiyana-siyana solubility, inogona kukamurwa kuita solubility yemvura (senge hydroxythyl cellulose) uye organic solvent salubilse (senge ethyl cellulose). Dry-yakavhenganiswa mongwe inonyanya-soluble cellows, uye mherzuru yemvura yakakamurwa kuita rudzi rune rudzi uye runyararo-rwakarapwa-delaxy.
Iyo Mechanism yeCell yeCellulose ether muMoter ndeye inotevera:
. dhaka panguva yekusanganisa maitiro uye kutsvedza kwekuvaka.
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Kutumira Nguva: Jan-10-2023