Hydroxyethyl cellulose ndi polima wosasungunuka m'madzi wopangidwa kuchokera ku cellulose, zinthu zachilengedwe za polima, kudzera munjira zingapo zama mankhwala. Ndi chinthu cholimba choyera kapena chachikasu, chopanda fungo komanso chopanda kukoma, chomwe chimatha kusungunuka m'madzi ozizira ndi madzi otentha, ndipo kusungunuka kumawonjezeka ndi kuwonjezeka kwa kutentha. Nthawi zambiri, sisungunuka m'ma organic solvents. Amagwiritsidwa ntchito ngati thickener ndi stabilizer mu utoto wa latex. N'zosavuta kumwazikana m'madzi ozizira ndi pH mtengo zosakwana kapena wofanana 7, koma n'zosavuta agglomerate mu zamchere madzi, choncho zambiri anakonza pasadakhale ntchito mtsogolo, kapena ofooka asidi madzi kapena organic njira amapangidwa slurry. , ndipo imathanso kusakanikirana ndi granular zina Zosakaniza ndizouma zosakanikirana.
Makhalidwe a hydroxyethyl cellulose:
HEC imasungunuka m'madzi otentha kapena ozizira, ndipo sichitha kutentha kwambiri kapena kutentha, zomwe zimapangitsa kuti zikhale ndi mitundu yambiri ya solubility ndi viscosity makhalidwe, ndi gelation yopanda kutentha.
Itha kukhala limodzi ndi ma polima ena osungunuka m'madzi, ma surfactants, ndi mchere, ndipo ndi yabwino kwambiri ya colloidal thickener ya mayankho omwe ali ndi ma electrolyte apamwamba kwambiri.
Mphamvu yosungira madzi ndiyokwera kawiri kuposa ya methyl cellulose, ndipo imakhala ndi malamulo oyendetsera bwino.
Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, kuthekera kobalalika kwa HEC ndikoyipa kwambiri, koma luso loteteza la colloid ndilolimba kwambiri.
Kumanga kwabwino; ili ndi ubwino wopulumutsa ntchito, osati kudontha kosavuta, anti-sag, anti-splash yabwino, ndi zina zotero.
Kugwirizana bwino ndi ma surfactants osiyanasiyana ndi zosungira zomwe zimagwiritsidwa ntchito mu utoto wa latex.
Kukhuthala kosungirako kumakhala kokhazikika, komwe kungalepheretse hydroxyethyl cellulose kuchepetsa kukhuthala kwa utoto wa latex pakusungidwa chifukwa cha kuwonongeka kwa michere.
Nthawi yotumiza: May-25-2023