Hydroxypropyl methylcellulose ngati zomatira zomangira

Gulu la guluu womanga ndi vuto lomwe limavutitsa makasitomala.

1. Gulu la zomatira zomangira ziyenera kuganizira zopangira. Chifukwa chachikulu chopangira gawo lolumikizirana ndi kusagwirizana pakati pa acrylic emulsion ndi hydroxypropyl methylcellulose (HPMC).

2. Chifukwa chosakwanira nthawi yosakaniza; zomatira zomangira zilinso ndi vuto la kukhuthala kosauka. Pazomatira zomangira, ndikofunikira kugwiritsa ntchito khofi nthawi yomweyo hydroxypropyl methylcellulose (HPMC) chifukwa HPMC imangomwazikana m'madzi ndipo samasungunuka kwenikweni. Pambuyo pa mphindi ziwiri, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, kutulutsa njira yowonekera bwino ya viscous colloidal. Zinthu zosungunuka zotentha zimatha kumwazikana m'madzi otentha ndikuzimiririka m'madzi otentha zikakumana ndi madzi ozizira. Kutentha kumatsika mpaka kutentha kwina, kuchedwa kwa viscosity kumachitika mpaka njira yowonekera bwino ya viscous colloidal imapangidwa. Ndikulimbikitsidwa kugwiritsa ntchito 2-4 kg ya hydroxypropyl methylcellulose (HPMC) pomanga zomatira.

3. Zinthu zakuthupi za hydroxypropyl methylcellulose (HPMC) mu zomatira zomangira zimakhala zokhazikika, zotsutsana ndi mildew zimakhala zabwino kwambiri, ndipo sizidzawonongeka ndi kusintha kwa pH mtengo. Kukhuthala kungagwiritsidwe ntchito pakati pa 100,000 s ndi 200,000 s, koma popanga Pamene kupanga, kukwezera mamasukidwe apamwamba, kuli bwino. Viscosity ndi yosiyana molingana ndi mphamvu yopondereza ya zomatira. The apamwamba mamasukidwe akayendedwe, m'munsi mphamvu compressive. Nthawi zambiri, mamasukidwe akayendedwe ndi 100,000s.

Tsopano m'makampani okongoletsera, kugwiritsa ntchito hydroxypropyl methylcellulose ndikovuta kwambiri.

Momwe mungasinthire kuchuluka kwake? Dulani inu:

Nthawi yomweyo sakanizani CMC ndi madzi kuti mupange zomatira ngati phala ndikuyika pambali. Mukayika phala la CMC, gwiritsani ntchito chosakaniza kuti muwonjezere madzi ozizira mumphika wopangira. Chosakanizacho chikayamba, mwapang'onopang'ono ndi molingana kuwaza carboxymethylcellulose mu thanki yopangira, ndipo pitirizani kugwedeza kuti muphatikize kwathunthu carboxymethylcellulose ndi madzi ndikusungunulatu carboxymethylcellulose. Mukasungunula bolodi la chubu, nthawi zambiri pamafunika kuti muwabalalitse mofanana ndikupitirizabe kusonkhezera bwino "kupewa mapangidwe ndi mapangidwe a chubu bolodi ikakumana ndi madzi, kuchepetsa vuto la kusungunuka kwa chubu" ndikuwongolera kusungunuka kwa bolodi la chubu. . Kuyimitsa komiti yoyang'anira.

Nthawi yosakaniza ndi yosiyana ndi nthawi yomwe imatengera CMC kusungunuka kwathunthu. Awa ndi matanthauzo awiri. Nthawi zambiri, nthawi yosakanikirana ndi yayifupi kwambiri kuposa nthawi yakutha kwa CMC, kutengera momwe zilili. Nthawi yosakaniza imatsimikiziridwa potengera miyezo ya static data. Pamene CMC ndi wogawana omwazika m'madzi popanda agglomeration zoonekeratu, kusanganikirana imathetsedwa kulola CMC ndi madzi kudutsa wina ndi mzake.

Pali zifukwa zingapo za nthawi yofunikira kuti athetseretu CMC:

(1) CMC ndi madzi zimaphatikizidwa kwathunthu, ndipo palibe zida zolekanitsa zamadzimadzi zolimba pakati pawo;

(2) Kusakaniza kumakhala kofanana ndi kosalala, ndipo pamwamba pake ndi yosalala ndi yonyowa;

(3) Pambuyo kusakaniza, phala ndi lopanda mtundu komanso lowoneka bwino, ndipo palibe tinthu tating'onoting'ono mu phala. Zimatenga maola 10 mpaka 20 kuchokera nthawi yomwe CMC imayikidwa mu chisakanizo cha tanki yosakaniza ndi madzi mpaka itasungunuka kwathunthu.