Udindo wa hydroxyethyl cellulose (HEC) mu zophimba!

Hydroxyethyl cellulose (HEC), cholimba choyera kapena chachikasu chopepuka, chopanda fungo, chopanda poizoni kapena chopanda ufa, chokonzedwa ndi etherization ya alkaline cellulose ndi ethylene oxide (kapena chlorohydrin), chomwe chili m'gulu la Nonionic soluble cellulose ethers. Chifukwa HEC ili ndi mphamvu zabwino zokhuthala, kuyimitsa, kufalitsa, kusakaniza, kulumikiza, kupanga filimu, kuteteza chinyezi komanso kupereka ma colloids oteteza, yagwiritsidwa ntchito kwambiri pakufufuza mafuta, zokutira, zomangamanga, mankhwala ndi chakudya, nsalu, kupanga mapepala ndi ma polima. Polymerization ndi madera ena.

Pambuyo poti hydroxyethyl cellulose yakumana ndi utoto wochokera m'madzi?

Monga mankhwala osakhala a ionic surfactant, hydroxyethyl cellulose ili ndi zinthu zotsatirazi kuwonjezera pa kukhuthala, kuyimitsa, kumangirira, kuyandama, kupanga filimu, kufalitsa, kusunga madzi ndi kupereka ma colloids oteteza:

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 gelling yosatentha;

Mphamvu yosungira madzi ndi yowirikiza kawiri kuposa 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;

Siyothandiza pa ionic ndipo imatha kukhala limodzi ndi ma polima ena ambiri osungunuka m'madzi, ma surfactants, ndi mchere. Ndi chinthu chabwino kwambiri chokhuthala cha colloidal cha mayankho a electrolyte okhala ndi kuchuluka kwakukulu.

Kodi mungagwiritse ntchito bwanji hydroxyethyl cellulose?

Onjezani mwachindunji panthawi yopanga - njira iyi ndiyosavuta ndipo imatenga nthawi yochepa:

Yambani kusakaniza mosalekeza pa liwiro lotsika ndipo pang'onopang'ono sefa hydroxyethyl cellulose mofanana mu yankho ndipo pitirizani kusakaniza mpaka tinthu tonse titanyowa. Kenako onjezerani zosungira ndi zowonjezera zosiyanasiyana. Monga pigment, dispersing aids, ammonia, ndi zina zotero. Sakanizani mpaka hydroxyethyl cellulose yonse isungunuke kwathunthu (kukhuthala kwa yankho kumawonjezeka kwambiri) musanawonjezere zigawo zina mu fomula kuti muchite zomwezo.

Yokhala ndi mowa wotsekemera

Ndiko kukonzekera mowa wa mayi wokhala ndi kuchuluka kwakukulu kaye, kenako nkuuwonjezera ku chinthucho. Ubwino wa njira iyi ndikuti uli ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku chinthu chomalizidwa, koma chiyenera kusungidwa bwino. Masitepe a njira iyi ndi ofanana ndi masitepe ambiri mu Njira 1; kusiyana kwake ndikuti palibe chifukwa chogwiritsa ntchito choyambitsa kutentha kwambiri, ndipo ma agitator ena okha omwe ali ndi mphamvu zokwanira kuti hydroxyethyl cellulose ifalikire mofanana mu yankho ndi omwe angagwiritsidwe ntchito, ndikupitiliza kusakaniza mpaka itasungunuka kwathunthu kukhala yankho lolimba. Komabe, ziyenera kudziwika kuti mankhwala ophera tizilombo ayenera kuwonjezeredwa ku mowa wa mayi mwachangu momwe zingathere.

Malangizo abwino:

Popeza hydroxyethyl cellulose yokonzedwa pamwamba ndi yolimba ngati ufa kapena ulusi, pokonzekera mowa wa hydroxyethyl cellulose, kumbukirani kuti muyenera kulabadira mfundo zotsatirazi:

Musanawonjezere hydroxyethyl cellulose komanso mutatha kuisakaniza, iyenera kusungidwa ikusakanikirana mpaka yankholo litawonekera bwino komanso lomveka bwino;

Iyenera kusefedwa pang'onopang'ono mu mbiya yosakaniza, ndipo musalumikize mwachindunji zipolopolo kapena ma spheroids ndi hydroxyethyl cellulose mu mbiya yosakaniza;

Kutentha kwa madzi ndi pH ya madzi zili ndi ubale wofunikira ndi kusungunuka kwa hydroxyethyl cellulose, kotero chisamaliro chapadera chiyenera kuperekedwa kwa izo;

Musawonjezere zinthu zina zamchere mu chisakanizocho musanagwiritse ntchito.hydroxyethyl celluloseUfa umanyowa ndi madzi. Kukweza pH mutatha kunyowa kumathandiza kusungunuka;

Momwe mungathere, onjezerani mankhwala ophera bowa pasadakhale;

Mukamagwiritsa ntchito hydroxyethyl cellulose yokhala ndi kukhuthala kwakukulu, kuchuluka kwa mowa wochuluka sikuyenera kupitirira 2.5-3% (potengera kulemera), apo ayi mowa wochulukawo ndi wovuta kuugwiritsa ntchito.