Hydroxypropropylmethycelulose

Mwachidule: Kutchulidwa ngati HPMC, yoyera kapena yoyera-yoyera kapena granlar ufa. Pali mitundu yambiri ya cellose ndipo timagwiritsidwa ntchito kwambiri, koma makamaka timalumikizana ndi makasitomala mu ufa wouma mafakitale. Ma cellulose omwe amafala amatanthauza hypomelfese.

Zopanga kupanga: Zopangira zazikuluzikulu za HPMC: Woyeretsa thonje, methyl chloride. ya omwe amapezeka alkali ali mkati mwazofunikira. Ikani ulusi wa alkali mu ketulo yoyeserera, onjezani Proside oxide ndi methyl chloride nthawi ya 50-8 ° C kwa maola 5, ndikupanikizika kwambiri kwa 1.8 MPA. Kenako onjezani kuchuluka kwa hydrochloric acid ndi oxalic acid ndi madzi otentha pa 90 ° C kuti atsuke nkhaniyo kuti achuluke voliyumu. Madzi opanda madzi. Sambani mpaka osalowerera, ndipo chinyontho chikakhala chochepera 60%, wuzani madzi otentha kwambiri pa 130 ° C '% c mpaka 5%. Ntchito: Kusungidwa kwamadzi, Kukula, thixotropic odana ndi sag-sag, kugwirira ntchito kwa mpweya, kubweza.

Kusungidwa kwamadzi: Kusunga kwamadzi ndiko chinthu chofunikira kwambiri cha cellulose ether ether! Popanga matope a gypsum ndi zinthu zina, ma cellulose ether ndizofunikira. Kusungidwa kwamadzi kwambiri kumatha kuthandizidwa ndi Khungu la CEME ndi Gypsum Gypsum (mokwanira zomwe zimachitika kwambiri, mphamvu zazikulu). Pansi pazomwezo, mafashoni apamwamba a ethel ether, malo abwino osungitsa mafayilo (kusiyana kotere) kumachepetsedwa); Mlingo wapamwamba, nthawi zambiri kusungitsa kwamadzi, nthawi zambiri etherse yochepa kwambiri kumatha kusintha mapangidwe ake a matope. Kusunga kwamadzi, pamene zoterezi zifika pamlingo wina, zomwe zimachitika kuti nthawi yosunga madzi ikhale pang'onopang'ono; Kusunga kwamadzi kwa cellulose ether ether kumachepetsa pomwe kutentha kumawonjezeka, koma cellulose yapamwamba kwambiri-gl elder etter imakhalanso ndi magwiridwe antchito abwino kwambiri. Kusungidwa kwamadzi. Kuphatikizika pakati pa mamolekyulu amadzi ndi ma cellulose ethex ma unyolo amathandizira ma mamolekyulu amadzi kuti alowetse unyolo wa ethel ether ether, ndikupanga madzi aulere, ndikusintha madzi, ndikusintha madzi osalala a simenti.

Kukula, thixotropic ndi anti-sag: amapereka mawonekedwe abwino kwambiri ku matope! Imatha kuwonjezera chotsatsa pakati pa matope onyowa ndi maziko osanjikiza, ndikusintha matope a matope. Mphamvu ya kukula kwa cellulose eneanso imawonjezera kubalalitsidwa ndi kuwononga zinthu zosakanizika kumene, kupewetsa kuchepetsedwa kwa zinthu, tsankho komanso magazi. Mphamvu ya kukula kwa cellulose yopangidwa ndi zinthu za simenti zimachokera ku mamasukidwe a cellulose ether ether. M'mikhalidwe yomweyo, mafayilo apamwamba a ethel ether, mawonekedwe abwino omasulira a simenti osinthidwa, koma ngati ma vistor ndi akulu kwambiri, imakhudzanso madziwo komanso othamanga ang'onoang'ono. Zovuta). Matope okhathamira komanso konkriti wodziletsa zomwe zimafunikira kuti madzi amtundu wakomwe amafunikira mafayilo owoneka bwino kwa cellulose ether. Kuphatikiza apo, kusintha kwa kukula kwa cellulose ether kumakulitsa kuchuluka kwa zinthu za simenti ndikuwonjezera zokolola za matope. Kuchulukitsa kwambiri cellulose ethel magazi am'madzi kumakhala kokweza kwambiri, komwe kumakhalanso kwakukulu kwa cellulose ether ether. Mankhwala othetsera ma cellulose nthawi zambiri amakhala ndi pseudoplastic, zopanda thixotropic pansi kutentha kwawo kwa gel, koma choyenda kwa Newtonian pamalo otsika. Pseudoplaty imachulukana ndi kulemera kwa maselo kapena ndende ya cellulose. Ma gelsecramiramine amapangidwa pomwe matenthedwe amawonjezeka, ndipo kutuluka kwa thixotropic kumachitika. Cellulose etrars okhala ndi zovuta kwambiri komanso mawonekedwe otsika otsika thixotropy ngakhale pansi pa kutentha kwa gel. Katunduyu ndi phindu lalikulu pantchito yomanga matope kuti asinthe miyambi yake ndi sag. Tiyenera kudziwidwa pano kuti kukwera mafayilo a ethel ether, koma mamasukidwe abwino kwambiri, komanso kuchepa kwa kuchuluka kwa ma cellulose, zomwe zimasokoneza kwambiri mu matope ndi kugwirira ntchito.

Choyambitsa: cellulose ether ali ndi zotsatira zowoneka bwino za mpweya pazinthu zatsopano za simenti. Cellulose ether ili ndi gulu la hydrophilic (gulu la hydroxyl) ndi gulu la hydrophobic), mphete ya methyl, ndi yowonjezera, ndipo imagwira ntchito motero ili ndi mpweya wabwino. Mphamvu ya mpweya wa ethel ether ether (mpira ", womwe ungapangitse magwiridwe antchito osakanikirako, monga kuwonjezera pulasitiki ndi kusalala kwa matope ndikugwiritsa ntchito chitoliro cha matope; Ikuwonjezeranso zotulutsa za matope. , kuchepetsa mtengo wa kupanga matope; Koma imawonjezera chidwi chouma ndi kuchepetsa mphamvu zake monga mphamvu ndi zotanulira. Monga chowonjezera, cellulose ether ilinso yonyowa imakhalanso yonyowa pa tinthu tating'onoting'ono, zomwe pamodzi ndi zinthu zake zodzitchinjiriza zimawonjezera madzi opangidwa ndi simenti, koma kukula kwake kumachepetsa madzi. Zotsatira za kuyenda ndi kuphatikiza kwa pulasitiki komanso kukula. Pamene zomwe zili mu cellulose ether ether ndizotsika kwambiri, zimawonetsedwa makamaka ngati kuponyera kapena kuchepetsa madzi; Zomwe zili ndizokwera, kukula kwa cellulose ether ether ether kumachulukitsa mwachangu, ndipo zotsatira zake zokopa mpweya zimafuna kukhuta, motero magwiridwewo amawonjezeka. Kukula kwamphamvu kapena kuchuluka kwa madzi.

Kukhazikitsa kubwezeretsa: cellulose ether amatha kuchedwetsa ma hydration a simenti. Cellulose eds amapereka matope ndi zinthu zosiyanasiyana zopindulitsa, komanso kuchepetsa kutentha koyambirira kwa simenti ndikuchedwetsa hydrate k sinmentic. Izi ndizosavuta kugwiritsa ntchito matope m'malo ozizira. Kubweza kumeneku kumachitika chifukwa cha Adsorption ya cellulose ethel mamolekyulu pazinthu zopatsa mphamvu monga COS (O) 2. Chifukwa cha kuchuluka kwa mapangidwe a pore, cellulose emeul ochepetsa kusuntha kwa ma ions mu yankho, poyerekeza ndi hydration njira. Kukwera kwambiri kwa cellulose ether mu mchere gel osakaniza, zomwe zimaperekedwa pakuchepetsa hydration. Cellulose esalo osati kokha pobweza, komanso kubwezeretsanso matope a simenti. Kubwezera kwa cellulose ethel ethelu kumadalira kokha pa ndende yake ya gel, komanso pa mankhwala. Kukwera kwambiri kwa methylation ya hemc, yabwinoko yobwezera kwa cellulose ether ether. Kubwezera kumatha. Komabe, mamasukidwe a cellulose ether ali ndi mphamvu pang'ono pa hydration kinetics. Ndi kuchuluka kwa ethel ether, nthawi ya matope imachuluka kwambiri. Pali mawonekedwe abwino osagwirizana pakati pa nthawi yoyambirira ya matope ndi zomwe zili mu cellulose ether, ndipo nthawi yomaliza imakhala ndi mawonekedwe abwino okhala ndi ma cellulose ether ether. Titha kuwongolera nthawi yogwira ntchito mwa matope posintha zomwe zili mu cellulose ether ether. Zitachitika, imathandizira kusungidwa kwamadzi, kukulitsa mphamvu, kulekanitsa mphamvu za simenti hymary, ndikusintha magwiridwe antchito. Kukhazikika kwa madzi kumapangitsa ementy gypsumtsa phulusa kubwereza kwathunthu, ndikuwonjezera mphamvu yonyowa, ndikuwongolera mphamvu ya matope, ndipo nthawi yomanga ntchito ndi ntchito yomanga ntchito. Nthawi yosinthika. Amasintha kupopera kapena kupatuka matope, komanso mphamvu ya zolimba. Pazochitika zenizeni, ndikofunikira kudziwa mtunduwo, mamasukidwe, ndi kuchuluka kwa cellose malinga ndi zinthu zosiyanasiyana, zizolowezi zomanga, ndi chilengedwe.