Ipeyinti yeLatex (ekwaziwa ngokuba yipeyinti esekwe emanzini) luhlobo lwepeyinti enamanzi njengesinyibilikisi, esetyenziselwa ukuhlobisa kunye nokukhusela iindonga, iisilingi kunye nezinye iindawo. Ifomula yepeyinti ye-latex ngokuqhelekileyo iqulethe i-emulsion ye-polymer, i-pigment, i-filler, i-additives kunye nezinye izithako. Phakathi kwabo,i-hydroxyethyl cellulose (HEC)sisityebi esibalulekileyo kwaye sisetyenziswa kakhulu kwipeyinti yelatex. I-HEC ayikwazi nje ukuphucula i-viscosity kunye ne-rheology yepeyinti, kodwa iphinde iphucule ukusebenza kwefilimu yepeyinti.
1. Iimpawu ezisisiseko ze-HEC
I-HEC yimbumba ye-polymer e-soluble yamanzi eguqulelwe kwi-cellulose enokuqina okulungileyo, ukumiswa kunye neempawu zokwenza ifilimu. Ikhonkco layo le-molecular liqukethe amaqela e-hydroxyethyl, okwenza ukuba inyibilike emanzini kwaye yenze isisombululo esiphezulu se-viscosity. I-HEC ine-hydrophilicity enamandla, eyenza ukuba idlale indima ekuzinziseni ukumiswa, ukulungelelanisa i-rheology kunye nokuphucula ukusebenza kwefilimu kwipeyinti ye-latex.
2. Ukusebenzisana phakathi kwe-HEC kunye ne-polymer emulsion
Inxalenye ephambili yepeyinti ye-latex yi-polymer emulsion (efana ne-acrylic acid okanye i-ethylene-vinyl acetate copolymer emulsion), eyenza i-skeleton ephambili yefilimu yepeyinti. Ukusebenzisana phakathi kwe-AnxinCel®HEC kunye ne-polymer emulsion ibonakala ikakhulu kule miba ilandelayo:
Ukuphucula ukuzinza: I-HEC, njenge-thickener, inokunyusa i-viscosity yepeyinti ye-latex kwaye incede ukuzinzisa iinqununu ze-emulsion. Ngokukodwa kwi-emulsions ye-polymer ephantsi, ukongezwa kwe-HEC kunokunciphisa i-sedimentation yeengqungquthela ze-emulsion kunye nokuphucula ukuzinza kokugcinwa kwepeyinti.
Ukulawulwa kwe-Rheological: I-HEC inokulungelelanisa iimpawu ze-rheological zepeyinti ye-latex, ukwenzela ukuba ibe nokusebenza kakuhle kokugqoka ngexesha lokwakha. Umzekelo, ngexesha lenkqubo yokupeyinta, i-HEC inokuphucula ipropathi yesilayidi yepeyinti kwaye igweme ukuvuza okanye ukugoba kwengubo. Ukongeza, i-HEC inokulawula ukubuyiswa kwepeyinti kunye nokuphucula ukufana kwefilimu yepeyinti.
Ukulungiswa kokusebenza kwengubo: Ukongezwa kwe-HEC kunokuphucula ukuguquguquka, ukucwebezela kunye nokuchasana nokukrala kwengubo. Isakhiwo se-molecular ye-HEC sinokusebenzisana ne-polymer emulsion yokuphucula ulwakhiwo olupheleleyo lwefilimu yepeyinti, iyenze ibe denser kwaye ngaloo ndlela iphucule ukuqina kwayo.
3. Ukusebenzisana phakathi kwe-HEC kunye nee-pigments
Ii-pigments kwiipeyinti ze-latex zihlala zibandakanya i-pigments ye-inorganic (efana ne-titanium dioxide, i-mica powder, njl.) kunye ne-organic pigments. Intsebenziswano phakathi kwe-HEC kunye nee-pigments ibonakala ikakhulu kule miba ilandelayo:
I-Pigment dispersion: Isiphumo sokuqina se-HEC sonyusa i-viscosity yepeyinti ye-latex, enokuthi isasaze ngcono amasuntswana e-pigment kwaye ithintele ukuhlangana kwe-pigment okanye imvula. Ngokukodwa kwezinye iincinci ze-pigment ezintle, i-polymer structure ye-HEC inokusonga kumphezulu we-pigment ukuthintela i-agglomeration yamasuntswana e-pigment, ngaloo ndlela iphucula ukusasazeka kwe-pigment kunye nokufana kwepeyinti.
Amandla okubopha phakathi kwe-pigment kunye nefilimu yokugquma:I-HECIimolekyuli zinokuvelisa i-adsorption ebonakalayo okanye isenzo sekhemikhali ngomphezulu we-pigment, ukwandisa amandla okubopha phakathi kwe-pigment kunye nefilimu yokwambathisa, kwaye unqande isenzeko sokuchithwa kwe-pigment okanye ukufiphala kumphezulu wefilimu yokwambathisa. Ngokukodwa kwipeyinti ye-latex ephezulu, i-HEC inokuphucula ngokufanelekileyo ukuchasana kwemozulu kunye nokuchasana kwe-UV ye-pigment kunye nokwandisa ubomi benkonzo yokugqoka.
4. Ukusebenzisana phakathi kwe-HEC kunye nokuzalisa
Ezinye iifayili (ezifana ne-calcium carbonate, i-talcum powder, i-silicate minerals, njl.) Ngokuqhelekileyo zongezwa kwipeyinti ye-latex ukuphucula i-rheology yepeyinti, ukuphucula amandla okufihla ifilimu yokugubungela kunye nokwandisa iindleko-ukusebenza kwepeyinti. Intsebenziswano phakathi kwe-HEC kunye nezigcwalisi ibonakala kule miba ilandelayo:
Ukunqunyanyiswa kwezihlunu: I-HEC inokugcina iifayili zongezwa kwipeyinti ye-latex kwimeko yokusabalalisa okufanayo ngomphumo wayo wokuqina, ukuthintela izizalisi ukuba zingahlali. Ukuzalisa iinqununu ezinobungakanani obukhulu, impembelelo yokuqina kwe-HEC ibaluleke kakhulu, enokugcina ngokufanelekileyo ukuzinza kwepeyinti.
I-gloss kunye ne-touch of the coating: Ukongezwa kweefayili zihlala zichaphazela i-gloss kunye ne-touch of the coating. I-AnxinCel®HEC inokuphucula ukusebenza kwembonakalo yengubo ngokulungelelanisa ukusabalalisa kunye nokulungiswa kwezihlunu. Ngokomzekelo, ukusabalalisa okufanayo kweengqungquthela zokuzalisa kunceda ukunciphisa uburhalarhume bendawo yokugubungela kunye nokuphucula ukukhanya kunye ne-gloss yefilimu yepeyinti.
5. Ukusebenzisana phakathi kwe-HEC kunye nezinye izongezo
Ifomyula yepeyinti ye-latex ikwabandakanya ezinye izongezo, ezifana ne-defoamers, izigcina-mpahla, ii-agent zokumanzisa, njl. Ezi zongezo zinokusebenzisana ne-HEC ngelixa ziphucula ukusebenza kwepeyinti:
Ukusebenzisana phakathi kwe-defoamers kunye ne-HEC: Umsebenzi we-defoamers kukunciphisa ama-bubbles okanye i-foam kwipende, kunye neempawu eziphezulu ze-viscosity ze-HEC zinokuchaphazela umphumo we-defoamers. Ukugqithisa kwe-HEC kunokukwenza kube nzima kwi-defoamer ukususa ngokupheleleyo i-foam, ngaloo ndlela ichaphazela umgangatho ophezulu wepeyinti. Ngoko ke, inani le-HEC elongezelelweyo kufuneka lilungelelaniswe kunye nenani le-defoamer ukufezekisa umphumo ongcono.
Ukusebenzisana phakathi kwe-preservatives kunye ne-HEC: Indima ye-preservatives kukuthintela ukukhula kwe-microorganisms kwipeyinti kunye nokwandisa ixesha lokugcinwa kwepeyinti. Njengepolymer yendalo, i-HEC ye-molecular structure inokusebenzisana kunye nezilondolozo ezithile, ezichaphazela i-anti-corrosion effect. Ke ngoko, kubalulekile ukukhetha isilondolozi esihambelana ne-HEC.
Indima yeI-HECkwipeyinti ye-latex ayigxininisi kuphela, kodwa ukusebenzisana kwayo kunye ne-emulsions ye-polymer, ii-pigments, iifayili kunye nezinye izongezo ngokudibeneyo kugqiba ukusebenza kwepeyinti ye-latex. I-AnxinCel®HEC inokuphucula iimpawu ze-rheological zepeyinti ye-latex, iphucule i-dispersibility yee-pigments kunye nezihlungi, kunye nokuphucula iimpawu zoomatshini kunye nokuqina kwengubo. Ukongezelela, umphumo we-synergistic we-HEC kunye nezinye izongezo nazo zinempembelelo ebalulekileyo ekuzinzeni kokugcinwa, ukusebenza kokwakhiwa kunye nokubonakala kwengubo yepeyinti ye-latex. Ngoko ke, ekuyilweni kwefomula yepeyinti ye-latex, ukhetho olufanelekileyo lohlobo lwe-HEC kunye nemali yokongeza kunye nokulinganisela ukusebenzisana kwayo nezinye izithako zingundoqo ekuphuculeni ukusebenza ngokubanzi kwepeyinti ye-latex.
Ixesha lokuposa: Dec-28-2024