Upende weLatex (owaziwa nangokuthi upende osuselwe emanzini) uwuhlobo lukapende onamanzi njenge-solvent, esetshenziselwa ikakhulukazi ukuhlobisa nokuvikela izindonga, uphahla kanye nezinye izindawo. Ifomula yopende we-latex ngokuvamile iqukethe i-polymer emulsion, i-pigment, i-filler, izithasiselo nezinye izithako. Phakathi kwazo,i-hydroxyethyl cellulose (HEC)iyi-thickener ebalulekile futhi isetshenziswa kakhulu kupende we-latex. I-HEC ayikwazi nje ukuthuthukisa i-viscosity kanye ne-rheology yopende, kodwa futhi ithuthukise ukusebenza kwefilimu yepende.
1. Izici eziyisisekelo ze-HEC
I-HEC iyinhlanganisela ye-polymer encibilika emanzini eguqulwe isuka ku-cellulose enokuqina okuhle, ukumiswa kanye nezakhiwo zefilimu. Iketango layo lamangqamuzana liqukethe amaqembu e-hydroxyethyl, ayenza ikwazi ukuncibilika emanzini futhi yakhe isixazululo se-viscosity ephezulu. I-HEC ine-hydrophilicity eqinile, eyenza ikwazi ukudlala indima ekusimamiseni ukumiswa, ukulungisa i-rheology nokuthuthukisa ukusebenza kwefilimu kupende lwe-latex.
2. Ukusebenzisana phakathi kwe-HEC ne-polymer emulsion
Ingxenye eyinhloko yopende we-latex i-polymer emulsion (njenge-acrylic acid noma i-ethylene-vinyl acetate copolymer emulsion), eyenza uhlaka lwamathambo oluyinhloko lwefilimu kapende. Ukusebenzisana phakathi kwe-AnxinCel®HEC ne-polymer emulsion kubonakala ikakhulukazi kulezi zici ezilandelayo:
Ukuzinza okuthuthukisiwe: I-HEC, njenge-thickener, ingakhuphula i-viscosity yepende ye-latex futhi isize ukuzinzisa izinhlayiya ze-emulsion. Ikakhulukazi kuma-emulsions e-polymer ephansi, ukungezwa kwe-HEC kunganciphisa ukuchithwa kwezinhlayiya ze-emulsion futhi kuthuthukise ukuzinza kokugcinwa kopende.
Ukulawulwa kwe-Rheological: I-HEC ingakwazi ukulungisa izakhiwo ze-rheological zopende we-latex, ukuze ibe nokusebenza okungcono kokugqoka ngesikhathi sokwakhiwa. Isibonelo, phakathi nenqubo yokudweba, i-HEC ingathuthukisa indawo eshelelayo kapende futhi igweme ukuconsa noma ukuwohloka kwento enamathelayo. Ngaphezu kwalokho, i-HEC ingakwazi futhi ukulawula ukutholwa kopende futhi ithuthukise ukufana kwefilimu kapende.
Ukuthuthukiswa kokusebenza kwe-coating: Ukwengezwa kwe-HEC kungathuthukisa ukuguquguquka, ukucwebezela kanye nokumelana nokuklwebheka kwe-coating. Isakhiwo samangqamuzana e-HEC singasebenzisana ne-polymer emulsion ukuze kuthuthukiswe ukwakheka okuphelele kwefilimu kapende, kuyenze ibe minyene futhi ngaleyo ndlela ithuthukise ukuqina kwayo.
3. Ukusebenzisana phakathi kwe-HEC nama-pigments
Ama-pigments kumapende e-latex ngokuvamile ahlanganisa i-pigments ye-inorganic (njenge-titanium dioxide, i-mica powder, njll.) kanye ne-organic pigments. Ukusebenzisana phakathi kwe-HEC nama-pigments kubonakala ikakhulukazi kulezi zici ezilandelayo:
Ukuhlakazeka kwe-pigment: Umthelela wokujiya we-HEC ukhuphula i-viscosity kapende we-latex, ongahlakaza kangcono izinhlayiya ze-pigment futhi ugweme ukuhlangana kwe-pigment noma imvula. Ikakhulukazi kwezinye izinhlayiya ze-pigment emihle, isakhiwo se-polymer se-HEC singasonga ebusweni be-pigment ukuvimbela ukuhlangana kwezinhlayiya ze-pigment, ngaleyo ndlela kuthuthukiswe ukuhlakazeka kombala kanye nokufana kopende.
Amandla okubopha phakathi kwe-pigment nefilimu yokuhlanganisa:I-HECama-molecule angakhiqiza ukukhangiswa ngokomzimba noma isenzo samakhemikhali ngobuso be-pigment, athuthukise amandla okubopha phakathi kwe-pigment nefilimu enamathelayo, futhi agweme isenzakalo sokuchitheka kwe-pigment noma ukufiphala ebusweni befilimu yokunameka. Ikakhulukazi kupende we-latex osebenza kahle kakhulu, i-HEC ingathuthukisa ngempumelelo ukumelana nesimo sezulu kanye nokumelana ne-UV ye-pigment futhi yandise impilo yesevisi ye-coating.
4. Ukusebenzisana phakathi kwe-HEC nama-fillers
Amanye ama-fillers (afana ne-calcium carbonate, i-talcum powder, amaminerali e-silicate, njll.) avame ukungezwa kupende we-latex ukuze kuthuthukiswe i-rheology yopende, ukuthuthukisa amandla okufihla ifilimu yokumboza futhi kwandise ukusebenza kahle kwepende. Ukusebenzisana phakathi kwe-HEC nama-filler kubonakala kulezi zici ezilandelayo:
Ukumiswa kwama-fillers: I-HEC ingagcina izigcwalisi zengezwe kupende we-latex esimweni sokuhlakazeka okufanayo ngomphumela wawo wokujiya, ukuvimbela izigcwalisi ukuthi zingazinzi. Kuma-filler anamasayizi amakhulu ezinhlayiyana, umphumela wokujiya we-HEC ubaluleke kakhulu, ongagcina ngempumelelo ukuzinza kopende.
I-Gloss kanye nokuthinta kwe-coating: Ukwengezwa kwama-filler ngokuvamile kuthinta ukucwebezela nokuthinta kwe-coating. I-AnxinCel®HEC ingathuthukisa ukusebenza kokubukeka kwe-coating ngokulungisa ukusatshalaliswa nokuhlelwa kwezigcwalisi. Isibonelo, ukuhlakazeka okufanayo kwezinhlayiya zokugcwalisa kusiza ekunciphiseni ukuqina kwendawo yokugqoka futhi kuthuthukise ukucwenga nokucwebezela kwefilimu kapende.
5. Ukusebenzisana phakathi kwe-HEC nezinye izithasiselo
Ifomula yopende we-latex ihlanganisa nezinye izithasiselo, ezifana nama-defoam, izigcinalwazi, izinto zokumanzisa, njll. Lezi zithako zingase zihlanganyele ne-HEC kuyilapho kuthuthukisa ukusebenza kopende:
Ukusebenzisana phakathi kwe-defoamers ne-HEC: Umsebenzi we-defoamers ukunciphisa ama-bubbles noma i-foam kupende, futhi izici ze-viscosity eziphezulu ze-HEC zingathinta umphumela wama-defoamers. I-HEC eyeqile ingase yenze kube nzima ukuthi i-defoamer isuse ngokuphelele igwebu, ngaleyo ndlela ithinte izinga eliphezulu lopende. Ngakho-ke, inani le-HEC elengeziwe lidinga ukuhlanganiswa nenani le-defoamer ukuze kuzuzwe umphumela omuhle kakhulu.
Ukusebenzisana phakathi kwama-preservatives kanye ne-HEC: Indima yezilondolozi ukuvimbela ukukhula kwama-microorganisms kupende nokwandisa isikhathi sokugcina upende. Njenge-polymer yemvelo, ukwakheka kwamangqamuzana e-HEC kungase kuhlanganyele nama-preservatives athile, okuthinta umphumela wayo wokulwa nokubola. Ngakho-ke, kubalulekile ukukhetha isilondolozi esihambisana ne-HEC.
Indima yeI-HECngopende we-latex awugcini nje ukuqina, kodwa ukusebenzisana kwawo ne-polymer emulsion, izingulube, izigcwalisi nezinye izithasiselo zinquma ngokuhlanganyela ukusebenza kopende we-latex. I-AnxinCel®HEC ingathuthukisa izakhiwo ze-rheological zopende we-latex, ithuthukise ukuhlakazeka kwezingulube nama-fillers, futhi ithuthukise izakhiwo zemishini nokuqina kokunamathela. Ukwengeza, umphumela we-synergistic we-HEC nezinye izithasiselo nazo zinomthelela obalulekile ekuzinzeni kwesitoreji, ukusebenza kokwakhiwa kanye nokubukeka kwe-coating kapende we-latex. Ngakho-ke, ekuklanyweni kwefomula yepende ye-latex, ukukhethwa okunengqondo kohlobo lwe-HEC kanye nenani lokwengeza kanye nebhalansi yokusebenzelana kwayo nezinye izithako kuyisihluthulelo sokuthuthukisa ukusebenza okuphelele kopende we-latex.
Isikhathi sokuthumela: Dec-28-2024