I-Methyl hydroxyethyl cellulose (MHEC) yinxalenye ebalulekileyo ye-cellulose ether enotshintsho oluphindwe kabini lwe-methylation kunye ne-hydroxyethylation. Kwizinto ezisetyenziswa emanzini, i-MHEC idlala indima ebalulekileyo ngeempawu zayo ezizodwa zomzimba nezekhemikhali.
I. Iimpawu zokusebenza
Ukujiya
Amaqela e-hydroxyethyl kunye ne-methyl kwisakhiwo se-molecular se-MHEC anokwenza isakhiwo senethiwekhi kwisisombululo samanzi, ngaloo ndlela enyusa ngempumelelo i-viscosity yengubo. Esi siphumo sokutyeba siyenza ikwazi ukufezekisa i-rheology efanelekileyo kumanqanaba aphantsi, ngaloo ndlela inciphisa ubungakanani bengubo kwaye yonge iindleko.
Uhlengahlengiso lwe-rheological
I-MHEC inokwenza ukuba i-coating ibe fluidity egqwesileyo kunye neempawu zokulwa nokuwa. Iimpawu zayo ze-pseudoplastic zenza ukuba i-coating ibe ne-viscosity ephezulu kwimeko engaguqukiyo, kwaye i-viscosity ingancitshiswa ngexesha lenkqubo yokufaka, elungele ukuxubha, ukugquma nge-roller okanye imisebenzi yokutshiza, kwaye ekugqibeleni inokubuyisela ngokukhawuleza i-viscosity yokuqala emva kokuba ulwakhiwo lugqityiwe, inciphise ukuwa okanye ukuvuza.
Ukugcinwa kwamanzi
I-MHEC ineempawu ezilungileyo zokugcina amanzi kwaye inokulawula ngempumelelo izinga lokukhululwa kwamanzi. Le mpawu ibaluleke kakhulu ekuthinteleni ipeyinti esekwe emanzini ukuba ingaqhekeki, igutywe ngumgubo kunye nezinye iziphene ngexesha lenkqubo yokomisa, kwaye inokuphucula ukuguda kunye nokufana kwengubo ngexesha lokwakha.
Uzinzo lwe-emulsion
Njenge-surfactant, i-MHEC inokunciphisa uxinzelelo lomphezulu wee-pigment particles kwiipeyinti ezisekelwe emanzini kwaye ikhuthaze ukusasazeka kwazo ngokufanayo kwizinto ezisisiseko, ngaloo ndlela iphucula uzinzo kunye nokulingana kwepeyinti kwaye iphephe ukutyibilika kunye nokuna kwe-pigment.
Ukubola kwezinto eziphilayo
I-MHEC ivela kwi-cellulose yendalo kwaye inokubola kakuhle, nto leyo eyenza ukuba ibe neengenelo ezicacileyo kwiipeyinti ezisekelwe emanzini ezinobuhlobo nokusingqongileyo kwaye inceda ekunciphiseni ungcoliseko kwindalo esingqongileyo.
2. Imisebenzi ephambili
Isithambisi
I-MHEC isetyenziswa kakhulu njengesithambisi sepeyinti ezisekelwe emanzini ukuphucula ukusebenza kwayo ekwakheni kunye nomgangatho wefilimu ngokunyusa ukuxinana kwepeyinti. Umzekelo, ukongeza i-MHEC kwipeyinti yelatex kunokwenza udonga olufanayo ukuthintela ipeyinti ukuba ingatyibiliki kwaye ingatyibiliki.
Umlawuli we-Rheology
I-MHEC ingayilungisa indlela esebenza ngayo ipeyinti esekwe emanzini ukuqinisekisa ukuba kulula ukuyisebenzisa ngexesha lokwakha kwaye ingabuyela ngokukhawuleza kwimeko ezinzileyo. Ngolu lawulo lwe-rheological, i-MHEC iphucula ngokufanelekileyo ukusebenza kolwakhiwo lwepeyinti, iyenze ifaneleke kwiinkqubo ezahlukeneyo zokufaka ipeyinti.
Iarhente yokugcina amanzi
Kwizinto zokugquma ezisekelwe emanzini, ipropati yokugcina amanzi ye-MHEC inceda ukwandisa ixesha lokuhlala kwamanzi kwi-coating, ukuphucula ukufana kokoma kwe-coating, kunye nokuthintela ukuveliswa kwemifantu kunye neziphene zomphezulu.
Isizinzisi
Ngenxa yesakhono sayo esihle sokuxuba, i-MHEC inokunceda ukufakelwa kwamanzi ukuba akhe inkqubo yokuxuba ezinzileyo, iphephe ukuna kunye nokuxinana kwamasuntswana e-pigment, kwaye iphucule uzinzo lokugcina ukufakelwa.
Uncedo lokwenza ifilimu
Ngexesha lenkqubo yokwenza ifilimu yokwambathisa, ubukho be-MHEC bunokukhuthaza ukufana kunye nokugudama kokwambathisa, ukuze ukwambathisa kokugqibela kube nembonakalo entle kunye nokusebenza kakuhle.
3. Imizekelo yokusetyenziswa
Ipeyinti yeLatex
Kwipeyinti yelatex, umsebenzi ophambili weMHEC kukuqinisa nokugcina amanzi. Ingaphucula kakhulu iipropati zokuxubha nokuqengqeleka kwepeyinti yelatex, kwaye iqinisekise ukuba ipeyinti igcina ukuguda okuhle kunye nokufana ngexesha lenkqubo yokomisa. Ukongeza, iMHEC inokuphucula iipropati zokulwa nokutshixa kunye nokugoba kwepeyinti yelatex, okwenza inkqubo yokwakha ibe lula.
Ipeyinti yomthi oqhutywa ngamanzi
Kwipeyinti yomthi othuthwa ngamanzi, i-MHEC iphucula ukuguda kunye nokufana kwefilimu yopende ngokulungisa i-viscosity kunye ne-rheology yepeyinti. Ingathintela ipeyinti ekubeni igobe kwaye ingcolise umphezulu womthi, kwaye iphucule isiphumo sokuhombisa kunye nokuqina kwefilimu.
Ipeyinti yoyilo oluqhutywa ngamanzi
Ukusetyenziswa kwe-MHEC kwipeyinti yokwakha ephuma emanzini kunokuphucula ukusebenza kolwakhiwo kunye nomgangatho wokugquma kwepeyinti, ingakumbi xa kugquma iindawo ezifana neendonga kunye neesilingi, kunokuthintela ngempumelelo ukugoba nokuvuza kwepeyinti. Ukongeza, ipropati yokugcina amanzi ye-MHEC inokwandisa ixesha lokomisa kwepeyinti, inciphise ukuqhekeka kunye neziphene zomphezulu.
Ipeyinti yemizi-mveliso ephuma emanzini
Kwipeyinti yemizi-mveliso ephuma emanzini, i-MHEC ayisebenzi nje kuphela njengento eqinisayo negcina amanzi, kodwa ikwaphucula ukusasazeka kunye nokuzinza kwepeyinti, ukuze ipeyinti ikwazi ukugcina ukusebenza kakuhle kunye nokuqina kwiindawo ezinzima zoshishino.
IV. Amathuba emarike
Ngenxa yemithetho yokhuseleko lokusingqongileyo engqongqo ngakumbi kunye nemfuno ekhulayo yezixhobo zokwakha eziluhlaza, imfuno yemarike yeepeyinti ezisetyenziswa emanzini iyaqhubeka nokukhula. Njengesongezo esibalulekileyo kwiipeyinti ezisetyenziswa emanzini, i-MHEC inamathuba amaninzi emarike.
Ukukhuthazwa komgaqo-nkqubo wokusingqongileyo
Kwihlabathi liphela, imigaqo-nkqubo yokusingqongileyo iye yaqinisa ngakumbi imiqathango yokukhutshwa kwe-volatious organic compound (VOC), nto leyo eye yakhuthaza ukusetyenziswa kwe-waterboat coating. Njengesongezo esinobuhlobo nokusingqongileyo, i-MHEC idlala indima ebalulekileyo kwi-waterboat coating, kwaye imfuno yayo iya kwanda ngokwandiswa kwemarike ye-waterboat coating.
Imfuno ekhulayo kwishishini lokwakha
Ukwanda kwemfuno yeengubo ezisebenzisa i-VOC ephantsi, ezisebenza kakuhle kakhulu kushishino lokwakha kukwakhuthaze ukusetyenziswa kwe-MHEC kwiingubo zokwakha ezisebenzisa amanzi. Ingakumbi kwiingubo zodonga zangaphakathi nezangaphandle, i-MHEC inokubonelela ngokusebenza kakuhle kokwakha kunye nokuqina ukuze ihlangabezane neemfuno zemarike.
Ukwandiswa kokusetyenziswa kweengubo zoshishino
Imfuno ekhulayo yeengubo ezinobuhlobo nokusingqongileyo kwicandelo lemizi-mveliso ikwakhuthaze ukusetyenziswa kwe-MHEC kwiingubo zemizi-mveliso ezisetyenziswa emanzini. Njengoko iingubo zemizi-mveliso ziphuhliswa zisiya kwicala elinobuhlobo nokusingqongileyo nelisebenza kakuhle, i-MHEC iya kudlala indima ebaluleke ngakumbi ekuphuculeni ukusebenza kweengubo kunye neempawu zokusingqongileyo.
I-Methyl hydroxyethyl cellulose (MHEC) idlala indima ebalulekileyo kwiingubo ezisetyenziswa emanzini ngenxa yokuqina kwayo okugqwesileyo, ukulungiswa kwe-rheology, ukugcinwa kwamanzi, uzinzo lwe-emulsion kunye nokubola kwezinto eziphilayo. Ukusetyenziswa kwayo kwiingubo ezisetyenziswa emanzini akuphuculi nje kuphela ukusebenza kolwakhiwo kunye nomgangatho wokugquma kweengubo, kodwa ikwahambelana nomkhwa wokukhuselwa kwendalo kunye nophuhliso oluzinzileyo. Ngenxa yemfuno ekhulayo yemarike yeengubo ezisetyenziswa emanzini ezisebenza kakuhle, eziphantsi kwe-VOC, amathuba okusetyenziswa kwe-MHEC kweli candelo aya kuba banzi nangakumbi.
Ixesha leposi: Juni-18-2024