Kodi cellulose ndi chiyani?

Cellulose ether ndi polymer compound ndi mawonekedwe a ethel opangidwa ndi cellulose. Mphete iliyonse ya glucosyl mu cellulose macromelecule imakhala ndi magulu a hydroxyl a atomu wachisanu ndi chimodzi, ndipo haidrogen mu gulu la hydrocborbon yopanga ma cellulose ethel ether. Ndi chinthu chomwe haidrojeni la gulu la hydroxyl mu cellulose polymer imasinthidwa ndi gulu la hydrocarbon. Cellulose ndi polymerroxy polymer poimba kuti sisungunuke kapena kusungunuka. Pambuyo pakusintha, cellose imasungunuka m'madzi, kuchepetsa alkali yankho ndi zosungunulira, ndipo ali ndi thermoplascity.

Cellulose ndi polymerroxy polymer poimba kuti sisungunuke kapena kusungunuka. Pambuyo pakusintha, cellose imasungunuka m'madzi, kuchepetsa alkali yankho ndi zosungunulira, ndipo ali ndi thermoplascity.

1.

Kusungunuka kwa cellulose pambuyo pakusintha kosintha kwambiri. Itha kusungunuka m'madzi, kuchepetsa acid, kuchepetsa alkali kapena osungunuka. Kusungunuka makamaka kumadalira zinthu zitatu: (1) Makhalidwe a magulu omwe ayambitsidwa ndi gululi, oyambitsidwa ndi gululi, ndi ma ethel ether ether kuti asungunuke m'madzi; . Cellulose ambiri etres imatha kusungunuka m'madzi pansi pa gawo linalake, ndipo kuchuluka kwa zolowa kuli pakati pa 0 ndi 3; (3) Mlingo wa polymerization wa cellulose ether, kutalika kwa polymerization, sungunuka pang'ono; Kutsitsa kwa kuchuluka kwa cholowa chomwe chitha kusungunuka m'madzi, opambana. Pali mitundu yambiri ya cellose yochita bwino kwambiri, ndipo imagwiritsidwa ntchito kwambiri pomanga, simenti, chakudya, chopendekera, kugwiritsa ntchito mapepala ndi mafakitale ena.

2. KUSINTHA:

China ndi wopanga wamkulu kwambiri padziko lonse lapansi ndi ogula ether, ndi kuchuluka kwa chaka chopitilira 20%. Malinga ndi ziwerengero zoyambira, ma exuluse a Eleluse Eleul Ehal Ehal Ehal Ehal Ebel Eleul Eleul adapanga matani 400,000, ndipo pali matani 20,000, hebei, chopqing ndi Jiangsu. , Zhejiang, Shanghai ndi malo ena.

3. MUKUFUNA:

Mu 2011, kuchuluka kwa CMC ku China kunali matani 300,000. Ndi kufunikira kokulira kwa cellulose yapamwamba kwambiri m'mankhwala monga mankhwala, chakudya, ndi mankhwala amchenga, zomwe zimafunidwa kwa ethel ethel ethel eleluse eleluse eleul. , kupanga mphamvu ya MC / HPMC pali matani pafupifupi 120,000, ndipo za hec ndi matani 20,000. Pac akadali pokwezedwa ndi ntchito ku China. Ndi chitukuko cha minda yayikulu yamagetsi ndi kukula kwa zida zomangira, chakudya, mankhwala ndi mafakitale ena, kuchuluka kwa pac kukuchulukirachulukira matani okwanira matani 10,000.

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Malinga ndi kapangidwe kapangidwe kapangidwe ka muyezo m'malo mwaminionic, chikumbumtima komanso osagwirizana. Kutengera wothandizila kugwiritsidwa ntchito, pali methyl cellulose, hydroxethyl celloull, ma hydzylvyl cellouse, benzyl cellose cellulose, benzyl Cleanothyl, Carboxymethyl hydrothyl cellulose ndi phenyl cellulose, etc. methyl cellulose ndi ethyl cellulose ndizothandiza kwambiri.

Methylcellulose:

Wokongoletsa wokonzayo atathandizidwa ndi alkali, cellulose ether amapangidwa kudzera mu mndandanda wazomwe zimachitika ndi methane chloride ngati wothandizira. Nthawi zambiri, kuchuluka kwa zolowa ndi 1.6 ~ 2.0, ndipo solubility ndizosiyananso ndi madigiri osiyanasiyana. Ndi ya ether ether ether ether.

(1) Methylcellulose imasungunuka m'madzi ozizira, ndipo zingakhale zovuta kusungunuka m'madzi otentha. Njira yake yothetsera matenda imakhala yokhazikika mu pro = 3 ~ 12. Imakhala ndi kulumikizana bwino ndi wowuma, Guar Gum, etc. ndi ambiri okonda. Kutentha kukafika kwa kutentha kwa kutentha, gelation kumachitika.

. Nthawi zambiri, ngati kuchuluka kwake ndi kwakukulu, kukoma mtima ndikochepa, ndipo ma virus ndi akulu, osunga madzi ndi okwera. Pakati pawo, kuchuluka kwa kuwonjezera komwe kumapangitsa kuti pakhale madzi osunga madzi, ndipo kuchuluka kwa ma virus sikuphatikizidwa mwachindunji pamlingo wamadzi osamala yamadzi. Chiwerengero chophweka chimatengera kuchuluka kwa kuchuluka kwa ma cellulose tinthu tating'onoting'ono. Pakati pa cellulose yomwe ili pamwambapa, methyl cellulose ndi hydroxypropyl meth celyl cellulose imakhala ndi mitengo yapamwamba yamadzi.

(3) Kusintha kwa kutentha kumatha kukhudza kwambiri kusungidwa kwamadzi kwa methyl cellulose. Nthawi zambiri, kutentha kwambiri, kumadzaza madzi. Ngati kutentha kwa matope kupitirira 40 ° C, kusunga madzi a methyl cellulose idzachepetsa kwambiri, kukhudzana ndi kapangidwe ka matope.

(4) Methyl cellulose imakhudzanso kugwiritsidwa ntchito komanso kuphatikiza matope. "Kuchita Zabwino" Pano amatanthauza kugwirizanitsa kumverera pakati pa chitsimikizo cha wogwira ntchito ndi khoma lalikulu, ndiye kuti, kukana matope. Kumatira ndikokwera, kukana matope ndi kwakukulu, ndipo mphamvu zofunidwa ndi ogwira ntchito pakugwiritsa ntchito nthawi zambiri zimagwiritsidwanso ntchito ndizochulukirapo, ndipo zomangamanga za matope ndi osauka. Chuma cha methyl cellulose ali pamlingo wa sing'anga mu cellulose ethel ether.

Hydroxypropylmethylceluloseulose

Hydroxypypyl methylcellulose ndi mitundu ya cellulose yomwe zotsatira zake ndi zogwiritsidwa ntchito zikuchulukirachulukira. Ndiwopanda ma cellulose osakanizidwa ndi thonje lopangidwa kuchokera ku thonje loyeretsa, pogwiritsa ntchito ma propylen oxide ndi methyl chloride ngati zoyeserera. Mulingo wazolowa m'malo mwake 1.2 ~ 2.0. Zinthu zake zimasiyana malinga ndi kuchuluka kwa methoxyl zomwe zili ku hydroxypropyl zomwe zili.

(1) Hydroxypypyll methylcellulose imasungunuka mosavuta m'madzi ozizira, ndipo imakumana ndi zovuta pakusungunuka m'madzi otentha. Koma kutentha kwake kwamadzi otentha kumakhala kokulirapo kuposa kwa methyl cellulose. Kusungunuka m'madzi ozizira kumathandizanso kwambiri poyerekeza ndi methyl cellulose.

. Kutentha kumakhudzanso mamasukidwe awo, pamene kutentha kumakulirakulira, ma virucy amachepetsa. Komabe, kukopa kwa ma vinyato ake okwera komanso kutentha kwake ndikotsika kuposa kwa methyl cellulose. Njira yake imakhala yokhazikika ikasungidwa kutentha.

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. Diasc Soda ndi madzi a laimu samagwira ntchito pang'ono pa ntchito yake, koma alkali amatha kufulumizitsa kufalikira kwake ndikuwonjezera pang'ono ma visni. Hydroxypylropyl ndi chokhazikika pamchere wambiri, koma pamene kuchuluka kwa mchere ndi yayitali, mamasukidwe a hydroxypropyl so methylcellulose yankho limayamba kuchuluka.

. Monga mowa wa mulyvinyl, madzi owuma, masamba chingamu, etc.

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Hydroxyethyl cellulose:

Amapangidwa kuchokera ku thonje loyeyeretsedwa ndi alkali, ndipo anachita ndi ethylene oxide ngati othandizila kukhala othandizila pamaso pa isopropanol. Mulingo wake wolowa m'malo mwake 1.5 ~ 2.0. Ili ndi hydrophilicity wamphamvu ndipo ndizosavuta kuyamwa chinyezi.

(1) Hydroxethyl cellose imasungunuka m'madzi ozizira, koma zimakhala zovuta kusungunuka m'madzi otentha. Njira yake imakhazikika kutentha kwambiri osafuula. Itha kugwiritsidwa ntchito kwa nthawi yayitali pansi pa kutentha kwambiri kumatope, koma madzi ake ndi otsika kuposa a methyl cellulose.

. Kubalalitsa kwake m'madzi kumakulitsa pang'ono kuposa kwa methyl cellulose ndi hydroxypropyl methyl celluse.

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(4) Kuchita kwahydroxyethyl celluloseOpangidwa ndi mabizinesi ena apanyumba ndi otsika kuposa a methyl cellulose chifukwa cha madzi ake okwera ndi phulusa lapamwamba.

. Pa kutentha pafupifupi 40 ° C, helwew amatha kuchitika patatha masiku 3 mpaka 5, zomwe zingakhudze momwe akugwirira ntchito.

Carboxymethyl cellulose:

Loonal cellulose ether imapangidwa kuchokera ku ulusi wachilengedwe (thonje, etc.) Pambuyo mankhwala a Alkali, pogwiritsa ntchito sodium monochloroacertaceacertaceacertacertaceacertate ngati mankhwala oyeserera. Mulingo wazolowa m'malo mwake 0,4 ~ 1.4, ndipo magwiridwe ake amakhudzidwa kwambiri ndi kuchuluka kwa mpweya.

(1) Carboxymethyl cellulose ndizachilendo.

. Kutentha kukapitirira 50 ° C, ma virukoniwo sangasinthe.

(3) Kukhazikika kwake kumakhudzidwa kwambiri ndi Ph. Nthawi zambiri, itha kugwiritsidwa ntchito matope a gypsum, koma osati matope a simenti. Mukakhala ndi mchere wa alkaline, zimataya mafayilo.

(4) Kusunga kwake kwamadzi kumakhala kotsika kwambiri kuposa methyl cellulose. Imakhala ndi mphamvu yobwezeretsa matope a gypsum ndikuchepetsa mphamvu yake. Komabe, mtengo wa carboxymethyl cellulose ndiwotsika kwambiri kuposa wa methyl cellulose.

Cellulose alkyl ether:

Oyimira ndi methyl cellulose ndi ethyl cellulose. Mukupanga mafakitale, methyl chloride kapena ethyl chloride nthawi zambiri amagwiritsidwa ntchito ngati othandizira, ndipo zomwe zikuchitikazo zili motere:

Mu fomula, R imayimira Ch3 kapena C2h5. Alkali akukhulupirirana samakhudza kuchuluka kwa chikondwerero, komanso kumakhudzanso kugwiritsa ntchito ma alkyl halides. Kutsitsa kwa alkali, mwamphamvu hydrolysis ya alkyl halide. Pofuna kuchepetsa kumwa wolemekezeka, alkali ndende iyenera kuchuluka. Komabe, pamene alkali adakwera kwambiri, mankhwala otupa a cellulose amachepetsedwa, omwe sakugwirizana ndi momwe akudziwira, ndipo kuchuluka kwa kusintha kumachepetsedwa. Chifukwa chaichi, yuniyamu itakhazikika kapena yuni yolimba imatha kuwonjezeredwa pakuchita. Chiyandirocho chiyenera kukhala ndi chida chabwino chosangalatsa komanso chowononga kuti alkali agawiredwe kwambiri. Methyl cellulose imagwiritsidwa ntchito kwambiri ngati thickiner, zomatira ndi zoteteza, zomata, ndikuphatikizana ndi simenti yogwiritsidwa ntchito poletsa nthawi ndi Onjezani mphamvu zoyambirira, etc. ethyl cellulose zopangidwa ndi masinthidwe apamwamba, kusinthasintha, kukana kutentha komanso kukana kozizira. Cellulose yotsika kwambiri imasungunuka m'madzi ndikuchepetsa njira za alkaline, komanso zinthu zapamwamba kwambiri zimasungunuka m'malo okhazikika okhazikika. Imakhala ndi mgwirizano wabwino ndi mateni ndi mavidiyo osiyanasiyana. Itha kugwiritsidwa ntchito kupanga pulasitiki, mafilimu, ma varnishs, zomata, zokutira za mankhwala osokoneza bongo, zowonjezera kutentha kwa ma cellulose kumasiyananso ndi mtundu wa miniti ndi kuchuluka kwa alkyl kupita ku magulu a hydroxyaxyalkyl.

Cellulose Hydroxyalkilll ether ether ether.

Oyimira ndi hydroxyethyl cellulose ndi hydroxypropyl cellulose. Othandizira a Endoxides ndi ethylene oxide ndi propylene oxide. Gwiritsani acid kapena oyambira ngati chothandizira. Kupanga mafakitale ndikuti atengere cellulose ndi embinication Ansulose ndi EMDROTHYL Cellulose yokhala ndi magetsi okhazikika amasungunuka m'madzi onse ozizira ndi madzi otentha. Hydroxypropyl cellulose yokhala ndi mtengo wokhazikika wokha ndizongosungunuka m'madzi ozizira koma osati m'madzi otentha. Volroxyathyl cellulose ingagwiritsidwe ntchito ngati thickile yophimba la latx, chosindikizira cha mapepala, zida zomangika, zomata zam'mapepala zitha kugwiritsidwa ntchito, zida zomangika mapepala, zomata zam'mapepala zitha kugwiritsidwa ntchito, zida zomangika mapepala, zomata zam'mapepala zitha kugwiritsidwa ntchito, zida zomangika mapepala, zomata zam'mapepala zitha kugwiritsidwa ntchito, zida zomangika mapepala, zomata zam'mapepala zitha kugwiritsidwa ntchito, zida zomangika mapepala, zomata za m'matumba, zomata komanso zotchinga ma colodis. Kugwiritsa ntchito hydroxypropyl cellulose ndikofanana ndi kwa hydroxethyl cellulose. Hydroxypropyl cellulose yokhala ndi mtengo wotsika womwe ungagwiritsidwe ntchito ngati mankhwala ophatikizika, omwe amatha kukhala ndi zonse ziwiri zomangirira komanso zosokoneza.

Carboxymethyl cellulose, chidule cha Chingerezi cha CMC, nthawi zambiri chimakhala ngati mchere wa sodium. Wothandizila ndi monochloroorbocetic acid, ndipo zomwe zikuchitikazo:

Carboxymethyl cellulose ndiwomwe amagwiritsidwa ntchito kwambiri pa cellulose. M'mbuyomu, zimagwiritsidwa ntchito makamaka ngati matope obowola, koma tsopano zawonjezedwa kuti zigwiritsidwe ntchito ngati zotsekemera, zojambula, zokutira za katoni ndi pepala, zodzola, komanso zodzola za ceramics ndi nkhungu.

Cellulose cellulose (pac) ndi ether ether ether ndipo ndi chinthu chomaliza cha matebulo a carboxymethyl cellose (cmc). It is a white, off-white or slightly yellow powder or granule, non-toxic, tasteless, easy to dissolve in water to form a transparent solution with a certain viscosity, has better heat resistance stability and salt resistance, and strong antibacterial properties. Ayi. Ili ndi mawonekedwe a chiyero chachikulu, kuchuluka kwambiri kwa zolowa m'malo, ndi kufala kwa mavidiomini. Itha kugwiritsidwa ntchito ngati bindder, thiclogy, rheology osintha, madzi ochepetsa madzi, omwe angagwiritsidwe ntchito kwambiri m'mafashoni, anc. amagwiritsa ntchito bwino.

Cleonothyl cellulose ndi zomwe zimachitika pa cellose ndi aclonitrile pansi pa catalysis a alkali.

Cleonothyl cellulose imakhala ndi dielectic yokhazikika komanso yotsika yotsika ndipo imatha kugwiritsidwa ntchito ngati matrix a matrin ndi nyali zamagetsi. Chuma chotsika cha Conathyl chitha kugwiritsidwa ntchito ngati mapepala omasulira omasulira.

Mafuta owawa kwambiri amakono, alkeyl amakono, ndipo mowa wonunkhira bwino, koma sanagwiritsidwe ntchito.

Njira zokonzekera za cellulose ether zitha kugawidwa m'njira zamadzi, njira zophera zosungunulira, njira zodulira, njira yolimba, njira yamadzimadzi, njira zopangira pamwambapa.

Mfundo Ya 5.Plation:

The cy-cellulose yoyaka ndi njira ya alkaline yopukutira yowononga mafuta a hydrogen, ndikupanga ma cellulose alsuluse, kenako ndikuchita ndi ma etherse. Othandizira am'madzi amaphatikizapo ma hydrocarborn a hydroborbon (kapena sulfices), eoxides, ndi α ndi Β osakhazikika ndi olandila elekitoni.

6.Basic magwiridwe:

Admixtimes amatenga mbali yofunika kwambiri pokonza matope osakanikirana, ndipo akaunti yoposa 40% ya mtengo wamatamba osakanikirana. Gawo lalitali kwambiri pamsika wapabanja limaperekedwa ndi opanga zakunja, ndipo kuchuluka kwa malonda kumaperekedwanso ndi wothandizirayo. Zotsatira zake, mtengo wa zinthu zosakanizika matope umakhala wokwera, ndipo nkovuta kutchula matope ofala komanso zovala zapamwamba komanso kuchuluka kwake. Zogulitsa pamsika wokwera kwambiri zimayendetsedwa ndi makampani akunja, ndipo opanga matope owuma amakhala ndi phindu lochepa komanso ndalama zotsika mtengo; Kugwiritsa ntchito ma adminixtops alibe chidwi komanso kuwunikira, ndikutsatira mwadzidzidzi njira zakunja.

Mthandizi wosunga madzi ndi gawo lalikulu kusintha matope osakaniza ndi matope osakanikirana, ndipo ndi amodzi mwazovomerezeka kuti adziwe mtengo wamativesi. Ntchito yayikulu yacellulose etherKusungidwa kwamadzi.

Cellulose ether ndi mawu angapo kuti mupange zinthu zingapo zomwe zimapangidwa ndi alkali cellulose ndikumupeza wothandizika pazinthu zina. Ma cellulose amasinthidwa ndi othandizira osiyanasiyana kuti apeze cellulose yosiyanasiyana. Malinga ndi ma ionization chinthu chamitundu, cellulose eder amatha kugawidwa m'magulu awiri: Ionic (monga carboxymethyl cellulose). Malinga ndi mtundu wa gawo lamitundu yamitundu itha kugawidwa mu monoether (monga methyl cellulose) ndi ethersed ether (monga hydroxypropyl celyiluse). Malinga ndi kuswana kosiyanasiyana, imatha kugawidwa m'madzi (monga hydrothyl cellulose) ndi solvent soluluse (monga ethyl cellose). Matope owuma ndi osungunuka makamaka pa cellulose yamadzi, ndi ma cellose osungunuka madzi amagawidwa nthawi yomweyo komanso mtundu wa chisinthidwe.

Limagwirira ku zochita za cellulose ether mu matope ndi motere:

. zomanga.

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