Gulu la HPMC ndi njira yothetsera

1. Gulu:

Mtengo wa HPMCakhoza kugawidwa mumtundu wanthawi yomweyo ndi mtundu wosungunuka. Mankhwala amtundu wanthawi yomweyo amamwazikana mwachangu m'madzi ozizira ndikulowa m'madzi. Panthawiyi, madziwa alibe mamasukidwe akayendedwe, chifukwa HPMC amangomwazika m'madzi ndipo alibe kuvunda kwenikweni. Patapita mphindi 2, mamasukidwe akayendedwe a madzi pang`onopang`ono kuchuluka kwa 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. Njira yothetsera:

Njira yosungunulira madzi otentha: Popeza HPMC simasungunuka m'madzi otentha, HPMC imatha kumwazikana m'madzi otentha pagawo loyambirira, kenako ndikusungunuka mwachangu pakuzizira. Njira ziwiri zodziwika bwino zikufotokozedwa motere: 1), ikani kuchuluka kofunikira m'chidebe chamadzi otentha ndikutenthetsa pafupifupi 70 ° C. 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. 2), onjezani kuchuluka kofunikira kwa 1/3 kapena 2/3 yamadzi 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 za ufa, sakanizani bwino ndi chosakanizira, kenaka onjezerani madzi kuti musungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda kugwirizana, chifukwa ngodya yaying'ono iliyonse imakhala ndi HPMC yochepa. ——Njirayi imagwiritsidwa ntchito ndi opanga putty ufa ndi matope. [Hydroxypropyl methylcellulose (HPMC)amagwiritsidwa ntchito ngati thickener ndi chosungira madzi mu putty powder mortar]