Kugwiritsa ntchito hydroxypropyl methylcellulose HPMC

1. Kodi cholinga chachikulu cha hydroxypropyl methyl cellulose (HPMC) ndi chiyani?

HPMC chimagwiritsidwa ntchito zomangamanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC akhoza kugawidwa mu kalasi yomanga, kalasi chakudya ndi kalasi zachipatala malinga ndi cholinga chake. Pakali pano, zinthu zambiri zapakhomo ndi za kalasi yomanga. Pomanga kalasi, ufa wa putty umagwiritsidwa ntchito mochuluka, pafupifupi 90% umagwiritsidwa ntchito ngati putty ufa, ndipo enawo amagwiritsidwa ntchito ngati matope a simenti ndi guluu.

2. Pali mitundu ingapo ya hydroxypropyl methyl cellulose (HPMC). Kodi pali kusiyana kotani pakati pa ntchito zawo?

HPMC akhoza kugawidwa mu mtundu yomweyo ndi otentha-Sungunulani mtundu. The nthawi yomweyo mankhwala omwazika m'madzi ozizira ndi kutha m'madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe, chifukwa HPMC kokha omwazika m'madzi popanda kuvunda kwenikweni. Pafupifupi 2 mphindi, mamasukidwe akayendedwe a madzi pang'onopang'ono kuchuluka, kupanga mandala viscous colloid. Mankhwala osungunuka otentha, akakumana ndi madzi ozizira, amatha kufalikira mofulumira m'madzi otentha ndikutha 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, kuphatikizika kumachitika ndipo sikungagwiritsidwe ntchito. Mtundu wapomwepo uli ndi mapulogalamu ambiri. Itha kugwiritsidwa ntchito mu putty ufa ndi matope, komanso mu guluu wamadzimadzi ndi utoto. Palibe contraindication.

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

Njira yothetsera madzi otentha: Popeza HPMC sipasuka m'madzi otentha, HPMC akhoza uniformly omwazikana m'madzi otentha pa siteji koyamba, ndiyeno mwamsanga kupasuka pa kuzirala. Njira ziwiri zodziwika bwino zimafotokozedwa motere:

1). Onjezerani 1/3 kapena 2/3 ya madzi ofunikira mumtsuko ndikutenthetsa mpaka 70 ° C. kumwaza HPMC kukonzekera madzi otentha slurry; kenaka yikani madzi otsala otsala kumadzi otentha Mu slurry, ozizira kusakaniza mutatha kuyambitsa.

Njira yosakaniza ufa: Sakanizani ufa wa HPMC ndi zinthu zina zambiri za ufa, sakanizani bwino ndi blender, ndiyeno onjezerani madzi kuti musungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi popanda kugwedeza ndi kusakanikirana, chifukwa ngodya iliyonse yaying'ono, pali pang'ono chabe. wa HPMC ufa udzasungunuka mwamsanga ukakumana ndi madzi. -Opanga matope ndi matope amagwiritsa ntchito njirayi. [Hydroxypropyl methyl cellulose (HPMC) amagwiritsidwa ntchito ngati thickener ndi kusunga madzi mu putty powder mortar.

Ikani madzi otentha ofunikira mumtsuko ndikutenthetsa pafupifupi 70 ° C. Pang'onopang'ono onjezani hydroxypropyl methylcellulose ndikuyambitsa pang'onopang'ono, yambani HPMC kuyandama pamwamba pa madzi, kenako pang'onopang'ono pangani slurry, ndikuziziritsa slurry ndikugwedeza.