Hydroxypropyl Methylcellulose HPMC Mafunso

1. Pali mitundu ingapo ya hydroxypropyl methylcellulose HPMC, ndipo pali kusiyana kotani pakati pa ntchito zake?

Yankho: Hydroxypropyl methylcellulose HPMC akhoza kugawidwa mu mtundu yomweyo ndi otentha-Sungunulani mtundu.Mankhwala amtundu wanthawi yomweyo amamwazikana mwachangu m'madzi ozizira ndikulowa m'madzi.Panthawiyi, madziwa alibe mamasukidwe akayendedwe, chifukwa HPMC amangomwazikana m'madzi, palibe kupasuka kwenikweni.Patapita mphindi 2, mamasukidwe akayendedwe a madzi pang`onopang`ono kuchuluka, kupanga mandala viscous colloid.Zogulitsa zotentha zotentha, zikakumana ndi madzi ozizira, zimatha kumwazikana m'madzi otentha ndikuzimiririka m'madzi otentha.Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid apangidwa.Mtundu wosungunuka wotentha ukhoza kugwiritsidwa ntchito mu putty ufa ndi matope.Mu guluu wamadzimadzi ndi utoto, chodabwitsa cha clumping chidzachitika ndipo sichingagwiritsidwe ntchito.Mtundu wapomwepo uli ndi mapulogalamu ambiri.Itha kugwiritsidwa ntchito mu putty ufa ndi matope, komanso mu guluu wamadzimadzi ndi utoto, popanda zotsutsana.

2. Kodi cholinga chachikulu cha hydroxypropyl methylcellulose (HPMC) ndi chiyani?

A: HPMC chimagwiritsidwa ntchito pomanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena.HPMC akhoza kugawidwa mu: kalasi yomanga, kalasi chakudya ndi kalasi mankhwala malinga ndi cholinga.Pakali pano, zinthu zambiri zapakhomo ndizomangamanga.Pomanga kalasi, kuchuluka kwa ufa wa putty ndi waukulu kwambiri, pafupifupi 90% amagwiritsidwa ntchito popanga putty, ndipo enawo amagwiritsidwa ntchito ngati matope a simenti ndi guluu.

3. Kodi njira zosungunulira za hydroxypropyl methylcellulose HPMC ndi ziti?

Yankho: Njira yosungunula madzi otentha: Popeza HPMC sisungunuka m'madzi otentha, HPMC imatha kumwazikana m'madzi otentha pagawo loyambirira, kenako ndikusungunuka mwachangu ikakhazikika.Njira ziwiri zodziwika bwino zimafotokozedwa motere:

1), onjezani 1/3 kapena 2/3 ya kuchuluka kwa madzi ofunikira mumtsuko, ndikuwotcha mpaka 70 ° C, malinga ndi njira ya 1), kumwaza HPMC, konzani slurry yamadzi otentha;kenaka yikani madzi otsala otsala kumadzi otentha Mu slurry, kusakaniza kunakhazikika pambuyo poyambitsa.

Njira yosakaniza ufa: Sakanizani ufa wa HPMC ndi zinthu zina zambiri zaufa, sakanizani bwino ndi chosakanizira, kenaka yikani madzi kuti asungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda kugwirizana, chifukwa pali HPMC pang'ono chabe. ngodya yaying'ono.Ufa udzasungunuka mwamsanga pokhudzana ndi madzi.——Njira imeneyi imagwiritsidwa ntchito ndi opanga putty ufa ndi matope.[Hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito ngati thickener ndi chosungira madzi mu putty powder mortar.

2), ikani kuchuluka kwa madzi otentha mumtsuko, ndikutenthetsa mpaka 70 ℃.Hydroxypropyl methylcellulose inawonjezeredwa pang'onopang'ono ndikugwedeza pang'onopang'ono, poyamba HPMC inayandama pamwamba pa madzi, ndipo pang'onopang'ono imapanga slurry, yomwe inakhazikika ndi kusonkhezera.

4. Kodi mungaweruze bwanji ubwino wa hydroxypropyl methylcellulose (HPMC) mophweka komanso mwachidziwitso?

Yankho: (1) Kukoka kwapadera: kukulira kwa mphamvu yokoka yeniyeni, kulemera kwake kumakhala bwinoko.zazikulu, kawirikawiri chifukwa

(2) Kuyera: Ngakhale kuyera sikumatsimikizira ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati wothandizira woyera akuwonjezeredwa pakupanga, zimakhudza ubwino wake.Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino.

(3) Fineness: Ubwino wa HPMC nthawi zambiri amakhala ma mesh 80 ndi mauna 100, ndipo mauna 120 amakhala ochepa.Ambiri a HPMC opangidwa ku Hebei ndi 80 mesh.Kukongoletsedwa bwino, kumakhala bwinokonso.

(4) Transmittance: Ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti mupange colloid yowonekera, ndikuwona kufalikira kwake.Kutumiza kumakwera, kumakhala bwino, kusonyeza kuti muli zinthu zochepa zosasungunuka mu .The permeability wa ofukula riyakitala zambiri zabwino, ndi yopingasa riyakitala ndi zoipa, koma sitinganene kuti khalidwe ofukula riyakitala ndi bwino kuposa ya yopingasa riyakitala, ndipo pali zinthu zambiri zimene kudziwa khalidwe la mankhwala.Zomwe zili mu hydroxypropyl mmenemo ndizokwera, ndipo hydroxypropyl ili pamwamba, kusunga madzi kuli bwino.

5. Kodi zizindikiro zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Yankho: Zomwe zili ndi Hydroxypropyl ndi viscosity, ogwiritsa ntchito ambiri amasamala za zizindikiro ziwirizi.Kukwera kwa hydroxypropyl kumapangitsa kuti madzi asungidwe bwino.Viscous, kusunga madzi, pang'ono (m'malo mwa

6. Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?

Yankho: Putty ufa nthawi zambiri ndi 100,000 yuan, ndipo matope ndi ovuta kwambiri, ndipo ndi osavuta kugwiritsa ntchito pa 150,000 yuan.Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening.Mu ufa wa putty, bola ngati kusungirako madzi kuli bwino komanso kukhuthala kumakhala kotsika (70,000-80,000), ndizothekanso.Inde, ngati mamasukidwe akayendedwe ndi apamwamba, kusungitsa madzi wachibale ndi bwino.Pamene mamasukidwe akayendedwe kuposa 100,000, zotsatira za mamasukidwe akayendedwe pa kusunga madzi si kwambiri.Mwamtheradi) ndi bwino, ndipo mamasukidwe akayendedwe ndi mkulu, ndipo ndi bwino ntchito mu matope simenti.

7. Kodi zida zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Yankho: Zida zazikulu za hydroxypropyl methylcellulose (HPMC): thonje woyengedwa, methyl chloride, propylene oxide, zinthu zina zopangira monga flake alkali, asidi, toluene, isopropanol, etc.