Iisepha zolwelo luhlobo oluqhelekileyo lwemveliso esetyenziswa ekucoceni indlu. Zisekelwe emanzini kwaye zinokususa ngokufanelekileyo ukungcola, igrisi kunye nezinye izinto ezingcolileyo. Ukuze kuphuculwe amava azo okusetyenziswa, zihlala zifuna ukulungiswa zibe yi-viscosity efanelekileyo. I-viscosity yesepha akufuneki ibe sezantsi kakhulu, kungenjalo iya kuhamba ngokukhawuleza, okwenza kube nzima ukulawula ubungakanani, kwaye iya kuziva "incinci" xa isetyenziswa; kodwa akufuneki ibe phezulu kakhulu, njengoko inokuba yi-viscosity kakhulu kwaye kunzima ukuyisasaza nokuyicoca. Ngenxa yoko, izinto ezithiyayo ziye zaba zezinye zezithako eziphambili kwi-detergent ye-liquid formulations.
1. I-Sodium carboxymethyl cellulose (CMC)
I-Sodium carboxymethyl cellulose sisithambisi esisetyenziswa kakhulu kwiisepha. Sisithambisi se-cellulose esinyibilikayo emanzini esinokunyusa ngempumelelo i-viscosity yolwelo. I-CMC inezi nzuzo zilandelayo:
Ukunyibilika kwamanzi okulungileyo: I-CMC inokunyibilika ngokukhawuleza emanzini ize yenze isisombululo esifanayo nesicacileyo kwisisombululo samanzi.
Ithambile kwaye ayicaphukisi: I-CMC yinto eyenziwe nge-polymer yendalo engenazo iziphumo eziyingozi eluswini okanye kwindalo esingqongileyo, ihlangabezana neemfuno zabathengi banamhlanje zokukhusela okusingqongileyo kunye nempilo.
Ukuhambelana okuhle: I-CMC ihambelana kakuhle nezinye izithako kwiifomyula zesepha, ngaphandle kweengxaki ezifana nokuqhekeka okanye ukubola, kwaye ayizukuchaphazela isiphumo sokuhlamba.
2. I-Xanthan gum
I-Xanthan gum yi-polysaccharide yendalo eveliswa yi-bacterial fermentation, esetyenziswa kakhulu ekutyeni, kwizinto zokuthambisa kunye nezicoci. Ukusetyenziswa kwe-xanthan gum kwiisepha kuneempawu ezilandelayo:
Isiphumo esihle kakhulu sokutyeba: Nokuba incinci xa idityanisiwe, i-xanthan gum inokunyusa kakhulu ukutyeba kolwelo.
Ukusebenza kokunyibilikisa okuchasene nokucheba: I-Xanthan gum ineempawu ezilungileyo zokunyibilikisa ukucheba. Xa ixutywa okanye icinezelwe, ukuqaqambisa kwesepha kuya kuncipha okwethutyana, nto leyo elula ukusasazwa nokusetyenziswa; kodwa ukuqaqambisa kunokubuyiselwa ngokukhawuleza emva kokusetyenziswa ukuze kuthintelwe ukunyibilika okugqithisileyo.
Ukumelana nobushushu obuqinileyo: I-Xanthan gum inokuhlala izinzile kumaqondo obushushu aphezulu okanye aphantsi, ayichaphazeleki kukuwohloka okanye ukunciphisa i-viscosity, kwaye iyenza iqine kwaye isasebenza kakuhle phantsi kweemeko ezinzima.
3. Iziqinisi zePolyacrylate
Izithambisi zePolyacrylate (ezifana neCarbomer) zizinto zepolymer ezenziwe ngokwenziwa ezinokukwazi ukuqina kakhulu, zifanelekile ngakumbi ekuqineni izicoci ezibonakalayo. Iimpawu zazo eziphambili ziquka:
Ukukhanya okuphezulu: I-Polyacrylate inokwenza izisombululo ezicacileyo kakhulu, nto leyo eyenza ukuba ibe lukhetho olufanelekileyo lwe-thickener kwiisepha ezicacileyo.
Amandla okuqina ngokufanelekileyo: I-Polyacrylate inokufezekisa iziphumo ezibalulekileyo zokuqina xa iphantsi kwaye inolawulo oluchanekileyo kwi-viscosity.
Ukuxhomekeka kwe-pH: Isiphumo sokutyeba sale thickener sinxulumene ngokusondeleyo nexabiso le-pH yesisombululo, kwaye sihlala sisebenza kakuhle phantsi kweemeko ezibuthathaka ze-alkaline, ngoko ke i-pH yefomyula kufuneka ilungiswe xa isetyenziswa ukuze kufunyanwe isiphumo esingcono.
4. Izinto zokutyebisa ityuwa
Iityuwa (ezifana ne-sodium chloride, i-sodium sulfate, njl.njl.) nazo zizinto ezixhaphakileyo kwizicoci zolwelo, ingakumbi kwizicoci ezinee-surfactants. Umgaqo wayo osebenzayo kukutshintsha indlela ezicwangciswe ngayo iimolekyuli ze-surfactant ngokulungisa amandla e-ionic enkqubo, ngaloo ndlela zichaphazela i-viscosity. Iingenelo zezicoci zolwelo ziquka:
Ixabiso eliphantsi: Izinto zokunyibilikisa ityuwa zixabiso eliphantsi kwaye kulula ukuzifumana, ngoko ke zinexabiso eliphantsi xa zisenziwa ngobuninzi.
Isiphumo sokusebenzisana kunye nee-surfactants: Iziqinisi zetyuwa zinokuphucula ngempumelelo i-viscosity yenkqubo kwiifomyula ezinomxholo ophezulu we-surfactant.
Iindlela ezahlukeneyo zokusetyenziswa: Le ndlela yokwenza i-detergent isetyenziswa kwiisepha ezininzi zorhwebo, ingakumbi kwiisepha zemizi-mveliso.
Nangona kunjalo, ukusetyenziswa kwezithambisi zetyuwa nako kunemida ethile. Umzekelo, ubungakanani obungeziweyo akufuneki bube buninzi kakhulu, kungenjalo kunokubangela ukuba ukunyibilika kwesepha kunciphe okanye kungene nemvula. Ukongeza, ukuchaneka kokulungiswa kwe-viscosity yezithambisi zetyuwa akulunganga njengezinye izithambisi.
5. Ii-alcohols ezinamafutha ezifakwe i-ethoxylated (ezifana ne-sodium C12-14 alcohol ether sulfate)
Ukongeza kumsebenzi wayo oyintloko wokucoca, ii-surfactants ze-ethoxylated fatty alcohol nazo zinefuthe elithile lokutyeba. Ngokulungisa umlinganiselo wezi surfactants, umphumo othile wokutyeba unokufezekiswa. Iingenelo zayo zezi:
Ukuguquguquka: Olu hlobo lwe-surfactant alunakudlala indima yokuqina kuphela, kodwa lukwaphucula nokugcinwa kweesepha.
Ukuhambelana okuhle nezinye izithako: Ii-alcohols ezinamafutha e-ethoxylated ziyahambelana nee-surfactants eziqhelekileyo, iincasa, ii-pigment kunye nezinye izithako, kwaye aziyi kuchaphazela ukusebenza kwemveliso yokugqibela.
Nciphisa isidingo sezinye izithambisi: Ekubeni zinemisebenzi yokucoca kunye neyokutyebisa, ukusetyenziswa kwezithambisi ezicocekileyo kunokunciphisa kwifomyula, ngaloo ndlela kuphucula iindleko.
6. Ii-copolymers ze-acrylate
Ii-acrylate copolymers ziluhlobo lwe-synthetic polymer thickeners ezisetyenziswa rhoqo kwiisepha ezikumgangatho ophezulu okanye ezinemisebenzi ekhethekileyo. Iimpawu zazo eziphambili ziquka:
Ulawulo oluchanekileyo lwe-viscosity: Ngokulungisa ulwakhiwo lwe-copolymer, i-viscosity yemveliso inokulawulwa ngokuchanekileyo ukuze kufezekiswe isiphumo esifunekayo.
Uzinzo oluhle: Esi siqinisi sinozinzo oluhle lweekhemikhali nolwenyama kwaye sinokugcina i-viscosity entle kumaqondo obushushu ahlukeneyo, amaxabiso e-pH kunye neenkqubo ze-surfactant.
Akulula ukucola: Izithambisi ze-acrylate copolymer zibonisa amandla amahle okulwa nocola kwisepha zolwelo, ziqinisekisa uzinzo lwemveliso xa igcinwe ixesha elide.
Ukukhethwa kwesithambisi kwiisepha zolwelo kuxhomekeke kwizinto ezininzi, kuquka uhlobo lwe-surfactant kwifomyula, iimfuno zokucaca, ulawulo lweendleko kunye namava omsebenzisi. I-Sodium carboxymethyl cellulose kunye ne-xanthan gum zihlala zikhetho ezifanelekileyo kwiisepha zekhaya eziqhelekileyo ngenxa yokunyibilika kwazo kakuhle emanzini, ubumnene kunye nefuthe lazo lokuqina. Kwiisepha zokucoca ezibonakalayo, izithambisi ze-polyacrylate ziyathandwa. Izithambisi zetyuwa zinexabiso eliphantsi kwaye zifanelekile kwimveliso enkulu yeesepha zoshishino.
Ixesha leposi: Oktobha-18-2024