Chidule:
M'zaka zaposachedwa, zokutira zokhala ndi madzi zakhala zikudziwika kwambiri chifukwa chokonda zachilengedwe komanso zinthu zotsika kwambiri za organic organic compound (VOC). Hydroxyethylcellulose (HEC) ndi ambiri ntchito madzi sungunuka polima mu formulations izi, kutumikira monga thickener kuonjezera mamasukidwe akayendedwe ndi kulamulira rheology.
dziwitsani:
1.1 Mbiri:
Zovala zokhala ndi madzi zakhala njira yabwino yosamalira zachilengedwe kusiyana ndi zokutira zachikhalidwe zosungunulira, kuthetsa mavuto okhudzana ndi kuphulika kwa mpweya wamagulu achilengedwe komanso kukhudzidwa kwachilengedwe. Hydroxyethylcellulose (HEC) ndi chochokera ku cellulose chomwe ndi chofunikira kwambiri popanga zokutira zokhala ndi madzi ndipo chimapereka kuwongolera ndi kukhazikika kwa rheology.
1.2 Zolinga:
Nkhaniyi ikufuna kufotokozera za kusungunuka kwa HEC mu zokutira zokhala ndi madzi ndikuphunzira momwe zinthu zimakhudzira kukhuthala kwake. Kumvetsetsa mbali izi ndikofunikira kuti muwongolere mawonekedwe a zokutira ndikukwaniritsa zomwe mukufuna.
Hydroxyethyl cellulose (HEC):
2.1 Kapangidwe ndi kachitidwe:
HEC ndi yochokera ku cellulose yomwe imapezeka ndi etherification reaction ya cellulose ndi ethylene oxide. Kukhazikitsidwa kwa magulu a hydroxyethyl mu cellulose msana kumathandizira kuti madzi ake asungunuke ndikupanga polima wamtengo wapatali pamakina opangira madzi. Mapangidwe a mamolekyu ndi katundu wa HEC adzakambidwa mwatsatanetsatane.
Kusungunuka kwa HEC m'madzi:
3.1 Zinthu zomwe zimakhudza kusungunuka:
Kusungunuka kwa HEC m'madzi kumakhudzidwa ndi zinthu zingapo, kuphatikizapo kutentha, pH, ndi ndende. Zinthu izi ndi zotsatira zake pa kusungunuka kwa HEC zidzakambidwa, ndikupereka chidziwitso pazochitika zomwe zimakomera HEC kusungunuka.
3.2 Malire osungunuka:
Kumvetsetsa malire apamwamba ndi otsika a kusungunuka kwa HEC m'madzi ndikofunikira kuti apange zokutira ndi ntchito yabwino. Gawoli lidzayang'ana mumtundu wa ndende zomwe HEC imawonetsa kusungunuka kwakukulu ndi zotsatira za kupitirira malirewa.
Limbikitsani mamasukidwe akayendedwe ndi HEC:
4.1 Udindo wa HEC mu viscosity:
HEC imagwiritsidwa ntchito ngati thickener mu zokutira zochokera m'madzi kuti zithandizire kukulitsa kukhuthala komanso kusintha khalidwe la rheological. Njira zomwe HEC imakwaniritsa kuwongolera kwa viscosity zidzafufuzidwa, ndikugogomezera kuyanjana kwake ndi mamolekyu amadzi ndi zinthu zina zomwe zimapangidwira pakuyala.
4.2 Zotsatira zamitundu yosiyanasiyana ya ma viscosity:
Mitundu yosiyanasiyana ya mapangidwe, kuphatikizapo ndende ya HEC, kutentha, ndi kumeta ubweya wa ubweya, zingakhudze kwambiri kukhuthala kwa zokutira zamadzi. Gawoli lidzasanthula zotsatira za zosinthazi pa makulidwe a zokutira zokhala ndi HEC kuti apereke zidziwitso zothandiza kwa opanga.
Mapulogalamu ndi ziyembekezo zamtsogolo:
5.1 Ntchito zama mafakitale:
HEC imagwiritsidwa ntchito kwambiri pamafakitale osiyanasiyana monga utoto, zomatira ndi zosindikizira. Gawoli liwonetsa zopereka zenizeni za HEC ku zokutira zokhala ndi madzi m'mapulogalamuwa ndikukambirana zaubwino wake pazowonjezera zina.
5.2 Njira zofufuzira zamtsogolo:
Pomwe kufunikira kwa zokutira zokhazikika komanso zowoneka bwino zikupitilira kukula, njira zofufuzira zamtsogolo pazapangidwe zopangidwa ndi HEC zidzafufuzidwa. Izi zitha kuphatikiza zatsopano mukusintha kwa HEC, njira zopangira zatsopano, ndi njira zotsogola zotsogola.
Pomaliza:
Kufotokozera mwachidule zomwe zapezedwa, gawoli lidzawonetsa kufunikira kwa kusungunuka ndi kutsekemera kwa viscosity mu zokutira zamadzi pogwiritsa ntchito HEC. Nkhaniyi idzamaliza ndi zotsatira zothandiza kwa okonza mapulani ndi malingaliro a kafukufuku wowonjezereka kuti amvetsetse bwino HEC m'makina amadzi.
Nthawi yotumiza: Dec-05-2023