I-Methyl hydroxyethyl cellulose (MHEC) yinto ebalulekileyo ye-cellulose ether compound kunye nokuguqulwa kabini kwe-methylation kunye ne-hydroxyethylation.Kwiingubo ezisekelwe emanzini, i-MHEC idlala indima ebalulekileyo kunye neempawu zayo ezizodwa kunye neekhemikhali.
I. Iimpawu zokusebenza
Ukutyeba
Amaqela e-hydroxyethyl kunye ne-methyl kwisakhiwo se-molecular ye-MHEC inokwenza isakhiwo senethiwekhi kwisisombululo esinamanzi, ngaloo ndlela ikhulise ngokufanelekileyo i-viscosity yokugqoka.Esi siphumo sokuqina senza ukuba sifezekise i-rheology efanelekileyo kwiindawo eziphantsi, ngaloo ndlela kuncitshiswe inani leengubo kunye neendleko zokulondoloza.
Uhlengahlengiso lwe-Rheological
I-MHEC inokunika i-coating egqwesileyo ye-fluidity kunye ne-anti-sagging properties.Iimpawu zayo ze-pseudoplastic zenza i-coating ibe ne-viscosity ephezulu kwi-static state, kwaye i-viscosity ingancitshiswa ngexesha lenkqubo yesicelo, ekulungele ukuxubha, i-roller coating okanye imisebenzi yokutshiza, kwaye ekugqibeleni inokubuyisela ngokukhawuleza i-viscosity yokuqala emva kokuba ukwakhiwa igqityiwe, inciphisa i-sag okanye ukuvuza.
Ukugcinwa kwamanzi
I-MHEC ineempawu ezilungileyo zokugcina amanzi kwaye inokulawula ngokufanelekileyo izinga lokukhutshwa kwamanzi.Le propati ibaluleke kakhulu ekukhuseleni iipeyinti ezisekelwe kumanzi ukusuka ekuqhekekeni, i-powdering kunye nezinye iziphene ngexesha lokumisa, kwaye kunokuphucula ukuguquguquka kunye nokufana kwengubo ngexesha lokwakha.
Emulsion uzinzo
Njenge-surfactant, i-MHEC inokunciphisa ukunyanzeliswa komphezulu we-pigment particles kwiipeyinti ezisekelwe kumanzi kunye nokukhuthaza ukusabalalisa kwabo ngokufanayo kwizinto ezisisiseko, ngaloo ndlela kuphuculwe ukuzinza kunye nokulinganisa kwepeyinti kunye nokuphepha ukuxubha kunye nemvula ye-pigment.
I-Biodegradability
I-MHEC ivela kwi-cellulose yendalo kwaye ine-biodegradability enhle, eyenza ibe neenzuzo ezicacileyo kwiipeyinti ezisekelwe kwindalo kunye nokunceda ukunciphisa ukungcola kwindalo.
2. Imisebenzi ephambili
Ukutyeba
I-MHEC isetyenziswa kakhulu njenge-thickener yeepeyinti ezisekelwe emanzini ukuphucula ukusebenza kwayo kokwakhiwa kunye nomgangatho wefilimu ngokunyusa i-viscosity yepeyinti.Ngokomzekelo, ukongeza i-MHEC kwipeyinti ye-latex inokwenza i-coating efanayo eludongeni ukuthintela ipeyinti ukuba ingagxumeki kunye ne-sag.
Umlawuli we-Rheology
I-MHEC inokulungelelanisa i-rheology yeepeyinti ezisekelwe kumanzi ukuze kuqinisekiswe ukuba kulula ukuyisebenzisa ngexesha lokwakha kwaye inokubuyisela ngokukhawuleza kwisimo esizinzileyo.Ngolu lawulo lwe-rheological, i-MHEC iphucula ngokufanelekileyo ukusebenza kokwakhiwa kwengubo, okwenza ukuba ifaneleke kwiinkqubo ezahlukeneyo zokugubungela.
I-arhente yokugcina amanzi
Kwiingubo ezisekelwe emanzini, ipropati yokugcina amanzi ye-MHEC inceda ukwandisa ixesha lokuhlala lamanzi kwi-coating, ukuphucula ukufana kokumisa kwengubo, kunye nokuthintela ukuveliswa kokuqhekeka kunye neziphene zomhlaba.
Isizinzi
Ngenxa yobuchule bayo be-emulsifying obuhle, i-MHEC inokunceda i-coatings yamanzi yenze inkqubo ye-emulsion ezinzileyo, igweme imvula kunye ne-flocculation ye-pigment particles, kunye nokuphucula ukuzinza kokugcinwa kwengubo.
Uncedo lokwenza ifilimu
Ngethuba lenkqubo yokwenza ifilimu yokugqoka, ubukho be-MHEC bunokukhuthaza ukufana kunye nokuguquguquka kwengubo, ukwenzela ukuba i-coating yokugqibela ibe nembonakalo emihle kunye nokusebenza.
3. Imizekelo yokusetyenziswa
Ipeyinti yeLatex
Kwipeyinti ye-latex, umsebenzi oyintloko we-MHEC ukuqina kunye nokugcinwa kwamanzi.Inokuphucula ngokubonakalayo iipropathi zokuxubha kunye nokuqengqeleka kwepeyinti ye-latex, kwaye iqinisekise ukuba i-coating igcina ukuguda okuhle kunye nokufana ngexesha lokumisa.Ukongeza, i-MHEC inokuphucula i-anti-splashing kunye nepropathi ethobayo yepeyinti ye-latex, yenza inkqubo yokwakha ibe lula.
Ipeyinti yomthi eyenziwe ngamanzi
Kwipeyinti yomthi owenziwe ngamanzi, i-MHEC iphucula ukuguquguquka kunye nokufana kwefilimu yepeyinti ngokulungelelanisa i-viscosity kunye ne-rheology yepeyinti.Inokuthi ithintele ipeyinti ekubeni yenze i-sagging kunye ne-foiling kumphezulu womthi, kunye nokuphucula umphumo wokuhombisa kunye nokuqina kwefilimu.
Ipeyinti yokwakha ephuma emanzini
Ukusetyenziswa kwe-MHEC kwipeyinti yezakhiwo zamanzi kunokuphucula ukusebenza kokwakhiwa kunye nomgangatho wokugquma wepeyinti, ngakumbi xa ugubungela iindawo ezifana neendonga kunye neesilingi, kunokuthintela ngokufanelekileyo ukuchithwa kunye nokuthontsiza kwepeyinti.Ukongezelela, ipropati yokugcina amanzi ye-MHEC inokwandisa ixesha lokumisa ipeyinti, ukunciphisa ukuqhekeka kunye neziphene zomhlaba.
Ipeyinti yemizi-mveliso ehamba ngamanzi
Kwipeyinti yoshishino lwamanzi, i-MHEC ayisebenzi nje njenge-thickener kunye ne-ejenti yokugcina amanzi, kodwa iphucula ukusabalalisa kunye nokuzinza kwepeyinti, ukwenzela ukuba ipeyinti ikwazi ukugcina ukusebenza kakuhle kunye nokuqina kwiindawo ezinzima zoshishino.
IV.Amathemba emarike
Ngokwanda kwemithetho yokhuseleko lokusingqongileyo kunye nemfuno eyandayo yezinto zokwakha eziluhlaza, imfuno yentengiso yeepeyinti eziphuma emanzini iyaqhubeka nokukhula.Njengesongezo esibalulekileyo kwiipeyinti zamanzi, i-MHEC inamathuba okuthengisa ngokubanzi.
Ukukhuthazwa komgaqo-nkqubo wokusingqongileyo
Kwihlabathi jikelele, imigaqo-nkqubo yokusingqongileyo iye yaqina ngakumbi imiqobo ekukhutshweni kwe-volatile organic compound (VOC), ekhuthaze ukusetyenziswa kotyatyazo oluphuma emanzini.Njengesongezo sokusingqongileyo, i-MHEC idlala indima ebalulekileyo kwiingubo zamanzi, kwaye imfuno yayo iya kunyuka ngokunyuka kweemarike zokugquma kwamanzi.
Imfuno ekhulayo kushishino lokwakha
Imfuno ekhulayo ye-VOC ephantsi, i-coat-performance coatings kwi-industry yezokwakha nayo ikhuthaze ukusetyenziswa kwe-MHEC kwiingubo zezakhiwo zamanzi.Ngokukodwa kwiindonga zangaphakathi kunye nezangaphandle, i-MHEC inokubonelela ngokusebenza okugqwesileyo kolwakhiwo kunye nokuqina ukuhlangabezana neemfuno zemarike.
Ukwandisa ukusetyenziswa kweengubo zamashishini
Imfuno ekhulayo yeengubo ezihambelana nokusingqongileyo kwintsimi yoshishino nayo ikhuthaze ukusetyenziswa kwe-MHEC kwiingubo zamashishini zamanzi.Njengoko iingubo zemizi-mveliso ziphuhlisa ngokubhekiselele kwimimiselo ehambelana nokusingqongileyo kunye nokusebenza okuphezulu, i-MHEC iya kudlala indima ebalulekileyo ekuphuculeni ukusebenza kwengubo kunye neempawu zokusingqongileyo.
I-Methyl hydroxyethyl cellulose (MHEC) idlala indima ephambili kwiingubo zamanzi kunye nokuqina kwayo okugqwesileyo, ukulungiswa kwe-rheology, ukugcinwa kwamanzi, ukuzinza kwe-emulsion kunye ne-biodegradability.Ukusetyenziswa kwayo kwiingubo ezisekelwe kumanzi akugcini nje ukuphucula ukusebenza kokwakhiwa kunye nomgangatho wokugubungela, kodwa uhambelana nomkhwa wokukhuselwa kwendalo kunye nophuhliso oluzinzileyo.Ngokukhula kwemfuno yemarike yokusebenza okuphezulu, i-low-VOC yamanzi-based-coatings, ithemba lesicelo se-MHEC kule ndawo liya kuba libanzi.
Ixesha lokuposa: Jun-18-2024