HPMC yogwiritsidwa ntchito mu khoma la putty powder

1. Mavuto omwe amapezeka mu putty powder

Imauma mwachangu:

Chifukwa chachikulu ndi chakuti kuchuluka kwa phulusa la phulusa la calcium lomwe linawonjezeredwa (lalikulu kwambiri, kuchuluka kwa phulusa la phulusa la phulusa lomwe limagwiritsidwa ntchito mu putty formula likhoza kuchepetsedwa moyenera) likugwirizana ndi kuchuluka kwa madzi osungira madzi a fiber, komanso kumagwirizana ndi kuuma. cha khoma.

Peeling ndi kupindika:

Zimakhudzana ndi kuchuluka kwa kusungirako madzi, ndipo kutsika kwamakamakamakamaka a cellulose kumakhala kovutirapo ku izi kapena kuchuluka kwa kuonjezera kumakhala kochepa.

De-ufa wa mkati mwa khoma putty ufa:

Kuchuluka kwa phulusa la ufa wa calcium wowonjezera (kuchuluka kwa phulusa la phulusa la phulusa la phulusa la putty ndilochepa kwambiri kapena chiyero cha phulusa la phulusa la calcium ndi chochepa kwambiri, ndipo kuchuluka kwa phulusa la ufa wa calcium mu ufa wa putty uyenera kuwonjezeka moyenerera) , ndipo zimagwirizananso ndi kuchuluka kwa cellulose ndi Ubwinowu umagwirizana, zomwe zikuwonetsedwa mu chiwerengero cha kusunga madzi kwa mankhwala. Madzi osungira madzi ndi otsika, ndipo phulusa la phulusa la calcium (calcium oxide mu phulusa la calcium ufa silinatembenuzidwe mokwanira ku calcium hydroxide kwa hydration) si nthawi yokwanira, yomwe imayambitsa.

Kuchita thovu:

Chinyezi chouma cha khoma chimagwirizana ndi kuphwanyidwa, komanso chikugwirizana ndi zomangamanga.

Chizindikiro chikuwoneka:

Zimagwirizana ndi cellulose, katundu wake wopanga mafilimu ndi osauka, ndipo panthawi imodzimodziyo, zonyansa za cellulose zimachita pang'ono ndi phulusa la calcium. Ngati zomwe zimachitika kwambiri, ufa wa putty udzawoneka ngati zotsalira za nyemba. Sichikhoza kuikidwa pakhoma, ndipo ilibe mphamvu yogwirizana nthawi yomweyo. Kuphatikiza apo, izi zimachitikanso ndi zinthu monga carboxymethyl wosakanizidwa ndi cellulose.

Putty ikauma, ndizosavuta kusweka ndikusintha chikasu:

Zimakhudzana ndi kuwonjezera kwa ufa wambiri wa phulusa-calcium. Ngati kuchuluka kwa phulusa-calcium ufa kuwonjezeredwa kwambiri, kuuma kwa ufa wa putty kumawonjezeka mutatha kuyanika. Ngati ufa wa putty ulibe kusinthasintha, zimakhala zosavuta kusweka, makamaka pamene zikugwiritsidwa ntchito kunja kwa mphamvu. Zimagwirizananso ndi kuchuluka kwa calcium oxide mu phulusa la ufa wa calcium.

2. Chifukwa chiyani ufa wa putty umakhala wochepa thupi ukathira madzi?

Ma cellulose amagwiritsidwa ntchito ngati thickener komanso kusunga madzi pa putty. Chifukwa cha thixotropy ya cellulose yokha, kuwonjezera kwa cellulose mu putty powder kumabweretsanso thixotropy pambuyo powonjezera madzi ku putty. thixotropy iyi imayamba chifukwa cha kuwonongeka kwa kapangidwe kake kopanda pake kwa putty powder. Kapangidwe kameneka kamakhala kakupumula ndipo kamasweka ndi kupsinjika maganizo. Ndiko kuti, mamasukidwe akayendedwe amachepetsa pansi kusonkhezera, ndi mamasukidwe akayendedwe akuchira pamene ayimirira.

3. Nchifukwa chiyani putty imakhala yolemetsa kwambiri pakupukuta?

Pamenepa, kukhuthala kwa cellulose komwe kumagwiritsidwa ntchito nthawi zambiri ndikokwera kwambiri. Opanga ena amagwiritsa ntchito cellulose 200,000 kupanga putty. Putty yomwe imapangidwa motere imakhala ndi kukhuthala kwakukulu, kotero imamveka yolemetsa pamene ikukanda. Kuchuluka kwa putty kumakoma amkati ndi 3-5 kg, ndipo mamasukidwe akayendedwe ndi 80,000-100,000.

4. Chifukwa chiyani ma viscosity cellulose amamva mosiyana m'nyengo yozizira ndi chilimwe?

Chifukwa cha kutentha kwa zinthuzo, kukhuthala kwa putty ndi matope kumachepa pang'onopang'ono ndi kuwonjezeka kwa kutentha. Pamene kutentha kumaposa kutentha kwa gel osakaniza mankhwala, mankhwala adzakhala precipitated kuchokera madzi ndi kutaya mamasukidwe akayendedwe ake. Kutentha kwa chipinda m'chilimwe nthawi zambiri kumakhala pamwamba pa madigiri 30, komwe kumakhala kosiyana kwambiri ndi kutentha m'nyengo yozizira, kotero kukhuthala kumakhala kotsika. Akuti m'chilimwe, yesani kusankha mankhwala okhala ndi kukhuthala kwapamwamba mukamagwiritsa ntchito mankhwalawa, kapena muwonjezere kuchuluka kwa cellulose.