Hydroxyethyl cellulose ndi polima yosasungunuka m'madzi yopangidwa kuchokera ku cellulose, chinthu chachilengedwe cha polima, kudzera mu njira zingapo zamakemikolo. Ndi chinthu choyera kapena chachikasu, chopanda fungo komanso chopanda kukoma cha ufa, chomwe chimatha kusungunuka m'madzi ozizira komanso m'madzi otentha, ndipo kuchuluka kwa kusungunuka kumawonjezeka ndi kutentha. Nthawi zambiri, sichisungunuka m'zinthu zambiri zachilengedwe. Chimagwiritsidwa ntchito ngati chokhuthala komanso chokhazikika mu utoto wa latex. N'zosavuta kufalitsa m'madzi ozizira okhala ndi pH yochepera kapena yofanana ndi 7, koma n'zosavuta kusonkhana mumadzi amchere, kotero nthawi zambiri chimakonzedwa pasadakhale kuti chigwiritsidwe ntchito pambuyo pake, kapena madzi ofooka a asidi kapena yankho lachilengedwe limapangidwa kukhala slurry, ndipo limathanso kusakanizidwa ndi tinthu tina tating'onoting'ono. Zosakanizazo zimasakanizidwa pamodzi mouma.
Makhalidwe a hydroxyethyl cellulose:
HEC imasungunuka m'madzi otentha kapena ozizira, ndipo siuma pa kutentha kwambiri kapena kuwira, zomwe zimapangitsa kuti ikhale ndi mitundu yosiyanasiyana ya kusungunuka ndi kukhuthala, komanso gelation yosatentha.
Ikhoza kukhala pamodzi ndi ma polima ena ambiri osungunuka m'madzi, ma surfactants, ndi mchere, ndipo ndi chinthu chabwino kwambiri chokhuthala cha colloidal cha mayankho okhala ndi ma electrolyte ambiri.
Mphamvu yosungira madzi ndi yowirikiza kawiri kuposa ya methyl cellulose, ndipo ili ndi kayendedwe kabwino ka madzi.
Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, mphamvu yobalalitsira ya HEC ndiyo yoyipa kwambiri, koma mphamvu yoteteza ya colloid ndiyo yamphamvu kwambiri.
Kapangidwe kake kabwino kwambiri; kali ndi ubwino wopulumutsa ndalama, kosavuta kudontha, kuletsa kugwa, kuletsa kuphulika, ndi zina zotero.
Kugwirizana bwino ndi zinthu zosiyanasiyana zoyeretsera zinthu ndi zotetezera zomwe zimagwiritsidwa ntchito mu utoto wa latex.
Kukhuthala kwa malo osungiramo zinthu kumakhala kokhazikika, zomwe zingalepheretse kuti hydroxyethyl cellulose yonse isachepetse kukhuthala kwa utoto wa latex panthawi yosungira chifukwa cha kuwonongeka kwa ma enzyme.
Nthawi yotumizira: Meyi-25-2023