1 Nhanganyaya
China yave kukurudzira yakagadzirirwa-yakasanganiswa motwe kwemakore anopfuura makumi maviri. Kunyanya mumakore achangopfuura, madhipatimendi ehurumende akakodzera akabatanidza kukosha kwekuvandudzwa kwemutengo wakagadzirira-kwakasanganiswa uye kwakapa marongero anokurudzira. Parizvino, kune anopfuura matunhu gumi uye masangano munyika yakashandisa yakagadzirira-yakavhenganiswa dhaka. Kupfuura 60%, kune anopfuura 800 akagadzirira-yakasanganiswa madhiri emberi pamusoro peiyo yakajairika chiyero, negore rinogona kugadzirwa kwemamirioni 274 miriyoni. Muna 2021, kugadzirwa kwegore negore kwevakajairika-yakagadzirirwa marara aive makumi matanhatu nematanhatu emamiriyoni emamiriyoni ematani.
Munguva yekuvaka, iyo mongwe inowanzorasikirwa nemvura yakawandisa uye haina nguva yakakwana uye mvura kuti ive hydrate, zvichikonzera kusimba isina kukwana uye kupaza kwesimende pasita mushure mekushomeka. Cellulose ether ndiyo yakajairika polymer admixture mune yakaoma-yakasanganiswa dhiri. Iyo ine mashandiro ekuchengeta kwemvura, kurerutsa, kudzoreredzwa uye kumanikidzwa kwemhepo, uye kunogona kuvandudza zvakanyanya kuita kweiyo durari.
Kuti uite kuti dorari isangane nezvinodiwa zvekutakura uye kugadzirisa matambudziko ekupaza uye kushamwaridzana kusimba, ndeye kukosha kukuru kwekuwedzera cellulose ether kune dhiri. Ichi chinyorwa chinosunura muchidimbu hunhu hwe cellulose ether uye pesvedzero yayo mukuita kweiyo coment-yakavakirwa zvinhu, kutarisira kubatsira kugadzirisa matambudziko ehunyanzvi ekugadzirira-akavhenganiswa.
2 Nhanganyaya kune Cellulose ether
Cellulose ether
2.1 Kugadziriswa kwe cellulose ana
Zvinoenderana nemakemikari chimiro cheEther akaderera, cellaulose ethers inogona kukamurwa kuita anonic, caticis uye nonition they Ionic cellulose evainers inosanganisira carboxymethyl cellerose ether (cmc); Non-Ionic Cellulose evaherl inosanganisira methyl cellelose ether (mc), hydroxyprusyl methyl celler (hpmc) uye hpdroxethyl fiber ether (hc) uye zvichingodaro. Vasina-ioniz aungana vakakamurwa kuita eriters-inokonzeresa mvura nemafuta. Isiri-Ionic Water-Soluble eriters inonyanya kushandiswa mune zvigadzirwa zvemota. Mukuvapo kweCalcium ion, Ionic Cellalose ana vana haina kugadzikana, saka havawanzo kushandiswa mune yakaoma-musanganiswa moter Isiri-ionic mvura-soluble cell-cellulose inoshandiswa zvakanyanya muindasitiri yemiindasitiri yekuvaka nekuda kwekumiswa kwavo kwekumiswa uye kumiswa kwemvura.
Sekureva kwavo vamiririri vakasarudzika vakasarudzwa mumamiriro ekutsvaga l Cellulose, Benzyl Cyanoethyl Cellalose uye phenyl cellulose.
Cellulose eter inoshandiswa muMoter kazhinji inosanganisira methyl cellelose ether cellever
2.2 iyo makemikari zvivakwa zve cellulose ether
Imwe neimwe cellulose ether ine iyo yekutanga chimiro che cellulose-anhydroglucose chimiro. Mukuita kwekugadzira cellulose ether, iyo cellulose fiber yakatanga kupisa mumhinduro yeAlkaline uye akabva abatwa neanotsvaga mumiririri. Iyo fibrous reaction chigadzirwa inonatswa uye pasi kuti iite yunifomu poda neimwe yakaenzana.
Mukugadzirwa kweMC, chete methyl chloride inoshandiswa seyenyengeri mumiririri; Kuwedzera kune methyl chloride, profylexie oxide inoshandiswawo kuwana hydroxpropropropyl subsituents mukugadzirwa kweHPMC. Yakasarudzika cellulose ethyl methyl uye hydroxypruppropyl yekutsiva mitengo, iyo inokanganisa iyo organic kuwirirana uye yekupisa matatya ema cell internet.
2.3 Iyo yekunyungudika hunhu hwe cellulose ether
Hunhu hwekunyungudika hwemasero e cellulose ether ane pesvedzero huru pakubata kweiyo sment frar. Cellulose ether inogona kushandiswa kuvandudza kubatana uye kuchengetwa kwemvura kweiyo sumber doin, asi izvi zvinoenderana nemheremalulose ether ichinge yazara uye yakanyungudutswa mumvura. Izvo zvinhu zvikuru zvinokanganisa kupaza kwemasero e cellulose its nguva yekunyungudika, kumhanyisa kumhanya uye powder.
2.4 Basa rekunyura mumutero
Semunhu anokosha ezvakakosha wesimendi slurry, kuparadza kune zvazvakaita mune zvinotevera zvinhu.
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Kusanganisira murazvo wegomba rinogona kudzivirira dhudzi kubva mukuparadzanisa uye kuwana yunifomu uye yunifomu yepurasitiki muviri. Semuenzaniso, matumba anosanganisira hemc, hpmc, etc., anokonzeresa kuti mutete-mutete-mutete. , Shear rate, tembiricha, kupatsanurana kusungwa uye kwakanyungudika kwepfungwa yemunyu.
(2) ine mhepo-yekupindira mhedzisiro.
Nekuda kwekusvibiswa, kusuma kwemapoka mune zvimedu kunoderedza simba pamusoro pezvikamu, uye zviri nyore kuunza kugadzikana, yunifomu uye zvidimbu zvakaburitswa zvakakamurwa nepamusoro-soro mune maitiro. "Kubudirira kwebhora" kunovandudza basa rekuvaka remutya, kunoderedza kunyorova kwemutema uye kunoderedza kufambidzana kweiyo dhairi. Miedzo yakaratidza kuti kana huwandu husina huwandu hweHPC uye HPMC iri 0.5%, gasi zvirimo muguruva ndiyo yakakura, inenge 55%; Kana huwandu husina huwandu hwakakura kupfuura 0.5%, zvirimo zverukova zvishoma nezvishoma zvinokura mune gasi zvemukati maitiro sezvo huwandu hwemari sezvo huwandu hunowedzera.
(3) chengetedza zvisina kuchinjika.
Iyo wax inogona kunyungudika, lubricate uye kumutsa mudhaka, uye inofambisa inotsvedza yeiyo mutete wedura uye kupururudza poda. Izvo hazvidi kuve wakanyudzwa pamberi. Mushure mekuvaka, zvinhu zvekumisikidza zvinogona zvakare kuve nenguva yakareba yekuenderera mberi kwehystem munzira kuti uvandudze kuderedza pakati pehudyu uye substrate.
Iko kugadziridzwa kwemasangano e cellulose ether pane yakachena yemasement-based zvinhu zvinonyanya kusanganisira kurongedza, kwemvura kuchengetwa, kumanikidzwa kwemhepo uye kudzoreredzwa. Nekushandiswa kwakapararira kwe cellulose eterout mu coment-based zvigadzirwa, kudyidzana pakati pevaCellulose eter uye simende slurry kuri zvishoma nezvishoma hotspot.
Kutumira Nguva: Dec-16-2021