Kakaretso:
Lilemong tsa morao tjena, liphahlo tse thehiloeng metsing li fumane tlhokomelo e pharaletseng ka lebaka la botsoalle ba tsona tikolohong le tekanyo e tlase ea motsoako o feto-fetohang oa organic (VOC). Hydroxyethylcellulose (HEC) ke polymer e qhibilihang ka metsing e sebelisoang haholo mefuteng ena, e sebetsang e le setenya ho eketsa viscosity le taolo ea rheology.
hlahisa:
1.1 Semelo:
Liaparo tse thehiloeng metsing li fetohile mokhoa o mong o sireletsang tikoloho ho feta liaparo tse tloaelehileng tse thehiloeng ho solvent, li rarolla mathata a amanang le mesi e fetohang ea metsoako ea lintho tse phelang le tšusumetso ea tikoloho. Hydroxyethylcellulose (HEC) ke motsoako oa cellulose o leng motsoako oa bohlokoa ho theheng liaparo tse thehiloeng metsing 'me o fana ka taolo le botsitso ba rheology.
1.2 Maikemisetso:
Sengoloa sena se ikemiseditse ho hlakisa litšobotsi tsa ho qhibiliha ha HEC liphahlong tse thehiloeng metsing le ho ithuta tšusumetso ea lintlha tse fapaneng holim'a ho hlaka ha eona. Ho utloisisa likarolo tsena ho bohlokoa ho ntlafatseng mekhoa ea ho koahela le ho fihlela ts'ebetso e lakatsehang.
Hydroxyethylcellulose (HEC):
2.1 Sebopeho le tshebetso:
HEC ke setlolo se tswang ho cellulose se fumanwang ka karabelo ya etherification ya cellulose le ethylene oxide. Ho kenngwa ha dihlopha tsa hydroxyethyl mokokotlong wa cellulose ho tlatsetsa ho qhibiliheng ha yona metsing mme ho e etsa polymer ya bohlokwa ditsamaisong tse thehilweng metsing. Sebopeho sa dimolek'hule le thepa ya HEC di tla tshohlwa ka botlalo.
Ho qhibiliha ha HEC ka metsing:
3.1 Mabaka a amang ho qhibiliha ha metsi:
Ho qhibiliha ha HEC ka metsing ho angoa ke lintlha tse 'maloa, ho kenyeletsoa mocheso, pH le mahloriso. Lintlha tsena le tšusumetso ea tsona ho qhibilihang ha HEC li tla tšohloa, ho fana ka temohisiso mabapi le maemo a lumellang ho qhibiliha ha HEC.
3.2 Moeli oa ho qhibiliha:
Ho utloisisa meeli ea ho qhibiliha ha HEC ka holimo le ka tlase metsing ho bohlokoa ho theheng lipeipi tse nang le ts'ebetso e ntle ka ho fetisisa. Karolo ena e tla hlahloba sebaka sa mahloriso seo HEC e bonts'ang ho qhibiliha ho hoholo ho sona le liphello tsa ho feta meeli ena.
Ntlafatsa viscosity ka HEC:
4.1 Karolo ea HEC ho viscosity:
HEC e sebelisoa e le setenya liphahlong tse thehiloeng metsing ho thusa ho eketsa ho teteana le ho ntlafatsa boitšoaro ba rheological. Mekhoa eo HEC e finyellang taolo ea ho teteana ka eona e tla hlahlojoa, ho totobatsa likamano tsa eona le limolek'hule tsa metsi le metsoako e meng e entsoeng ka ho teteana.
4.2 Tšusumetso ea mefuta-futa ea foromo holim'a ho viscous:
Mefuta e fapaneng ea ho etsa lintho, ho kenyeletsoa le mahloriso a HEC, mocheso le sekhahla sa ho beola, li ka ama haholo ho viscous ea liphahlo tse tsamaeang ka metsi. Karolo ena e tla sekaseka tšusumetso ea mefuta ena ho viscous ea liphahlo tse nang le HEC ho fana ka temohisiso e sebetsang bakeng sa baetsi ba liphahlo.
Likopo le menyetla ea bokamoso:
5.1 Litšebeliso tsa indasteri:
HEC e sebelisoa haholo lits'ebetsong tse fapaneng tsa indasteri tse kang lipente, likhomaretsi le li-sealant. Karolo ena e tla totobatsa menehelo e ikhethang ea HEC ho lipente tse tsamaisoang ke metsi lits'ebetsong tsena le ho buisana ka melemo ea eona ho feta li-thickeners tse ling.
5.2 Litaelo tsa lipatlisiso tsa nakong e tlang:
Ha tlhoko ea liphahlo tse tšoarellang le tse sebetsang hantle e ntse e tsoela pele ho hola, ho tla hlahlojoa litaelo tsa lipatlisiso tsa nakong e tlang lefapheng la liforomo tse thehiloeng ho HEC. Sena se ka kenyelletsa boqapi ba phetoho ea HEC, mekhoa e mecha ea ho etsa, le mekhoa e tsoetseng pele ea ho hlalosa.
ha re phethela:
Ha re akaretsa liphuputso tsa mantlha, karolo ena e tla totobatsa bohlokoa ba ho qhibiliha le taolo ea viscosity liphahlong tse tsamaisoang ke metsi tse sebelisang HEC. Sehlooho sena se tla phethela ka litlamorao tse sebetsang bakeng sa baetsi ba liforomo le likhothaletso tsa lipatlisiso tse ling ho ntlafatsa kutloisiso ea HEC lits'ebetsong tse tsamaisoang ke metsi.
Nako ea poso: Tshitwe-05-2023