I-HEC kwiingubo ezisetyenziswa emanzini

I-Hydroxyethyl cellulose (HEC)yipolymer engeyiyo ionic, enyibilikayo emanzini ephuma kwi-cellulose yendalo eguqulwe ngamakhemikhali. Ibonisa iimpawu ezibalaseleyo zokutyeba, ukwenza ifilimu, ukuxuba, ukuzinzisa, kunye nokugcina amanzi. Kwiinkqubo zokugquma ezisetyenziswa emanzini, i-HEC yenye yezona zinto zisetyenziswa kakhulu ekuqiniseni nasekuguquleni i-rheology. Ukusebenza kwayo okudibeneyo kuchaphazela ngokuthe ngqo ukusebenza kwengubo, ukuzinza kokugcinwa kwayo, kunye neempawu zokwenza ifilimu.

1. Iindima eziphambili ze-HEC kwiingubo ezisetyenziswa emanzini

1.1. Ukuguqulwa koBulukhuni kunye neRheology
I-HEC ineempawu ezibalaseleyo zokunyibilika kwamanzi kunye nokuqina. Yonyusa i-viscosity yenkqubo ngokuxinana ngokwasemzimbeni kunye nokubophelela i-hydrogen, iphucula ngempumelelo iimpawu ze-rheological ze-coating. Oku kubangela i-viscosity ephezulu xa iphumle, ithintela ukuhlala kwe-pigment. Ngexesha lokusetyenziswa, ibonisa iimpawu ezibalaseleyo zokunciphisa i-shear, iqinisekisa ukulingana okulinganayo kunye nokusebenza kwe-brush/roller coating. Le propati ye-rheological "pseudoplastic" ibalulekile ekusetyenzisweni kwe-coating egudileyo kunye nokwenziwa kwefilimu efanayo.

1.2. Ukuzinzisa iiNkqubo zokuSasaza
Amaqela amaninzi e-hydroxyethyl kwi-HEC molecular chain anokwenza ii-hydrogen bonds okanye ukusebenzisana kwe-electrostatic kunye neendawo ze-pigment kunye ne-fillers kwi-water-based paints, ngaloo ndlela kuphucula uzinzo lokusasazwa. Oku kuthintela ukungqubana kwe-pigment kunye ne-sedimentation, kuphucula uzinzo lokugcina ipeyinti kwaye kwandise ubomi beshelufu yemveliso.

1.3. Ukuphucula Ukusebenza kweSicelo
Ukongeza ubungakanani obufanelekileyo be-HEC kuphucula i-thixotropy yepeyinti, kunciphisa ukutshiza nokugoba ngexesha lokufaka. Ingakumbi xa kusetyenziswa i-facade okanye isilingi, isiphumo sokuqina se-HEC sithintela ukugoba kwaye siqinisekisa ukuba ubukhulu befilimu buyafana. Ikwaphucula ukutyeba ngexesha lokufaka ibrashi kunye ne-roller, nto leyo ebangela ukuba ukufakwa kube lula.

1.4. Ukwenziwa kweFilimu kunye nokugcinwa kwamanzi
Ukugcinwa kwamanzi okuphezulu kwe-HEC kunceda ukulawula izinga lokoma kwengubo, kuthintela iziphene ezifana nokuqhekeka kunye nemingxunya ebangelwa kukufuma ngokukhawuleza. Kwiinkqubo ezithile, ikwanceda ekwakheni isakhiwo sefilimu esifanayo nesixineneyo, iphucula ukunamathela kunye nokukhazimla komphezulu.

1.5. Ukuhambelana Okuqinileyo Nokuziqhelanisa Nokusingqongileyo
I-HEC sisithambisi esingaxutywanga ne-ionic esihambelana kakuhle nee-emulsions ezahlukeneyo ze-anionic, cationic, kunye ne-nonion. Ingasetyenziswa kakhulu kwiinkqubo ezahlukeneyo, kubandakanya ii-emulsions ze-acrylic, ii-emulsions ze-vinyl acetate-acrylic, kunye nee-emulsions ze-ethylene-vinyl acetate copolymer, ezilungelelanisa neendawo ezahlukeneyo zokusetyenziswa kunye neemfuno zokwenziwa.

2. Ukusetyenziswa kwe-HEC kwiingubo ezahlukeneyo ezisekelwe emanzini

2.1. Iipeyinti zeLatex zangaphakathi nezangaphandle
I-HEC sisithambisi esisetyenziswa kakhulu kwiipeyinti zelatex, nto leyo ephucula kakhulu uzinzo lwepeyinti kunye nokusebenza kwayo. Kwiipeyinti zangaphakathi, iphucula ukuguda kwefilimu kunye nokumelana nokuchitheka; kwiipeyinti zangaphandle, inceda ekuphuculeni ukumelana nemozulu kunye nokumelana nokukhuhla.

2.2. Iingubo zomthi ezisekelwe emanzini
Kwiinkqubo zokugquma iinkuni, i-HEC ibonelela ngokulingana nokucaca okugqwesileyo, ilawula ukugoba, kwaye iqinisekisa ifilimu egudileyo nefanayo. Ngaphezu koko, ivumba layo eliphantsi kunye neempawu zayo ezinobuhlobo nokusingqongileyo zihambelana nomkhwa wophuhliso lwezigqubuthelo eziluhlaza zanamhlanje.

2.3. Iingubo zamanzi zemizi-mveliso
I-HEC ingasetyenziswa kwiinkqubo zoshishino ezifana neepeyinti ezilwa nomhlwa ezisetyenziswa emanzini, iipeyinti zomgangatho, kunye neengubo zokukhusela zesinyithi, nto leyo ephucula uzinzo lwazo lokugcina kunye nokulungelelaniswa nokusetyenziswa kwazo, nto leyo enika iingenelo zokulawula iindleko kunye nokusebenza okuzinzileyo.

2.4. Iingubo zoBugcisa nezeMpembelelo eKhethekileyo
Ngenxa yokuba i-rheology yayo ilawuleka kwaye ihambelana kakuhle nenkqubo, i-HEC ingasetyenziswa kwiingubo ezikhethekileyo ezifana neepeyinti ezifakwe isanti, iipeyinti ezifana nelitye, kunye neepeyinti ezifakwe isanti, nto leyo enceda ekufezekiseni ubume obuthile bokuhombisa kunye nobume bomphezulu.

3. Amathuba okusetyenziswa kwe-HEC kwiingubo ezisetyenziswa emanzini

Ngenxa yemithetho engqongqo yokusingqongileyo kunye nokususwa kancinci kancinci kweengubo ezisekelwe kwisinyibilikisi, isabelo semarike seengubo ezisetyenziswa emanzini siyaqhubeka nokukhula. Njengesithambisi esiveliswa ngokwendalo, esingenatyhefu ingako, nesinobuhlobo nokusingqongileyo, i-HEC ihambelana nomkhwa weshishini ojolise kubuchwepheshe obuluhlaza nobuphantsi be-VOC. Imiyalelo yophuhliso lwexesha elizayo lwe-HEC iya kugxila kwezi ndawo zilandelayo:

Uhlengahlengiso Lokusebenza Okuphezulu: Ukuphucula ukumelana nokucheba, ukumelana nee-enzyme, kunye nokuzinza kobushushu ngokusebenzisa uhlengahlengiso lwesakhiwo ukuhlangabezana neemfuno zeenkqubo zokugquma eziphezulu.

Ulawulo lwe-Rheology olukrelekrele: Ukuphuhlisa ii-HEC derivatives ezineempawu ezisabela kwi-shear kunye ne-ubushushu obuphantsi kwenza kube lula ukulungisa ukusebenza kwesicelo ngokuchanekileyo.

Izicelo Zokudibanisa: Ukudibanisa nge-polyurethane, ii-acrylic rheology modifiers, okanye ii-cellulose ethers kudala inkqubo yokuqina edibeneyo, nto leyo ephucula ukusebenza ngokubanzi kunye nokusebenza kakuhle kweendleko.

I-HECAyisiyonto yokutyebisa yendabuko kwiingubo ezisetyenziswa emanzini kuphela kodwa ikwasisongezo esibalulekileyo esisebenza kakuhle esifezekisa ulungelelwaniso phakathi kokusebenza kakuhle kunye nokusebenza kokusingqongileyo. Ngenxa yokuqhubela phambili kwetekhnoloji kunye nemfuno ekhulayo yezixhobo zokwakha eziluhlaza, kulindeleke ukuba amathuba okusetyenziswa kwayo kwimarike akhule.