1. Isishwankathelo se-methyl hydroxyethyl cellulose (MHEC)
I-Methyl hydroxyethyl cellulose (MHEC) yi-non-ionic cellulose ether efunyenwe ngokuguqulwa kwe-methylation ngokusekelwe kwi-hydroxyethyl cellulose. Ngenxa yesakhiwo sayo esikhethekileyo se-molecular, i-MHEC inokunyibilika kakuhle, ityeba, inamathela, iyenza ifilimu kwaye isebenza ngaphezulu, kwaye isetyenziswa kakhulu kwiingubo, kwizixhobo zokwakha, kwiikhemikhali zemihla ngemihla nakwezinye iindawo.
2. Isishwankathelo sezixhobo zokususa ipeyinti
Ii-strippers zepeyinti ziikhemikhali ezisetyenziselwa ukususa izinto ezigqunywe ngumphezulu ezifana neentsimbi, umthi, kunye neeplastiki. Ii-strippers zepeyinti zemveli zixhomekeke kakhulu kwiinkqubo eziqinileyo zesinyibilikisi, ezifana ne-dichloromethane kunye ne-toluene. Nangona ezi khemikhali zisebenza kakuhle, zineengxaki ezifana nokuguquguquka okuphezulu, ubuthi kunye neengozi zokusingqongileyo. Ngenxa yemithetho yokusingqongileyo engqongqo ngakumbi kunye nokuphuculwa kweemfuno zokusingqongileyo, ii-strippers zepeyinti ezisekelwe emanzini kunye nezingenabungozi ziye zaba yinto ephambili kwimarike.
3. Indlela yokusebenza kwe-MHEC kwii-strippers zepeyinti
Kwizinto zokusika ipeyinti, i-MHEC idlala indima ebalulekileyo njengesilungisi se-thickener kunye ne-rheology:
Isiphumo sokutyeba:
I-MHEC inefuthe elihle lokutyeba kwiinkqubo ezisekelwe emanzini. Ngokulungisa i-viscosity ye-paint stripper, i-MHEC ingenza i-paint stripper inamathele kwiindawo ezithe nkqo okanye ezithe nkqo ngaphandle kokugoba. Le mpawu ibaluleke kakhulu ngexesha lokusetyenziswa kwe-paint strippers kuba ivumela i-paint stripper ukuba ihlale kumphezulu ekujoliswe kuwo ixesha elide, ngaloo ndlela iphucula isiphumo se-paint stripper.
Zinzisa inkqubo yokumiswa:
Ii-strippers zepeyinti zihlala ziqulathe izithako ezahlukeneyo ezisebenzayo, ezinokuqhekeka okanye zihlale ngexesha lokugcina. Ngokuphucula ubungqindilili besakhiwo sesisombululo, i-MHEC inokuthintela ngempumelelo ukutyibilika kwee-slid particles, igcine ukusasazwa okufanayo kwezithako, kwaye iqinisekise ukusebenza okuzinzileyo kwe-stripper yepeyinti.
Lungisa iipropati ze-rheological:
Ukusetyenziswa kwezihluzi zepeyinti kufuna ukuba zibe neempawu ezilungileyo ze-rheological, oko kukuthi, zinokuhamba kakuhle xa kusetyenziswa amandla angaphandle, kodwa zinokuqina ngokukhawuleza xa zimile. Ulwakhiwo lwetsheyini yemolekyuli ye-MHEC luyinika iimpawu ezilungileyo zokucutha ukucheba, oko kukuthi, xa kucheba amazinga aphezulu, i-viscosity yesisombululo iya kuncipha, okwenza kube lula ukufaka isihluzi sepeyinti; ngelixa kumanqanaba aphantsi okucheba okanye kwimeko engaguqukiyo, i-viscosity yesisombululo iphezulu, nto leyo enceda ukuba izinto zenze uqweqwe olufanayo kumphezulu ekujoliswe kuwo.
Khuthaza ukwenziwa kweefilimu:
Ngexesha lenkqubo yokukrazula ipeyinti, i-MHEC inokunceda umkrazuli wepeyinti ukuba enze ifilimu efanayo kumphezulu ekujoliswe kuwo. Le filimu ayinakwandisa nje ixesha lokusebenza kwezithako ezisebenzayo, kodwa ikwaphucula nokukwazi ukugquma komkrazuli wepeyinti ukuya kwinqanaba elithile, ukuze ikwazi ukungena ngempumelelo kuzo zonke iindawo zokwaleka.
4. Indlela yokusebenzisa i-MHEC kwii-strippers zepeyinti
Ukulungiswa kwesisombululo samanzi:
I-MHEC idla ngokubakho kwimo yomgubo kwaye kufuneka ilungiswe ibe yisisombululo samanzi ngaphambi kokuba isetyenziswe. Isiqhelo ngokubanzi kukongeza i-MHEC kancinci emanzini axutyiweyo ukuze kuthintelwe ukuhlangana. Kufuneka kuqatshelwe ukuba ukunyibilika kwe-MHEC kuya kuchaphazeleka bubushushu bamanzi kunye nexabiso le-pH. Ubushushu bamanzi obuphezulu (50-60℃) bunokukhawulezisa inkqubo yokunyibilika kwe-MHEC, kodwa ubushushu obuphezulu kakhulu buya kuchaphazela ukusebenza kwayo kwe-viscosity.
Ixutywe kwii-strippers zepeyinti:
Xa ulungiselela izihluzi zepeyinti, isisombululo samanzi se-MHEC sidla ngokufakwa kancinci kwisiseko se-paint stripper xa sixutywa. Ukuze kuqinisekiswe ukuba isantya sokongeza se-MHEC asifanele sibe sikhawulezileyo kakhulu, kwaye ukuxuba kufuneka kuqhubeke de kufunyanwe isisombululo esifanayo. Le nkqubo ifuna ukulawula isantya sokuxuba ukuthintela ukwakheka kwamaqamza.
Uhlengahlengiso lwefomula:
Ubungakanani be-MHEC kwii-paint strippers buhlala buhlengahlengiswa ngokwefomula ethile kunye nokusebenza okujoliswe kuko kwee-paint strippers. Ubungakanani obuqhelekileyo bokongeza buphakathi kwe-0.1%-1%. Isiphumo sokutyeba esinamandla kakhulu sinokubangela ukungalingani kokugquma okanye ukuxinana okugqithisileyo, ngelixa idosi enganeleyo isenokungafikeleli kwi-viscosity efanelekileyo kunye neempawu ze-rheological, ngoko ke kuyimfuneko ukuphucula ukusetyenziswa kwayo ngokusebenzisa iimvavanyo.
5. Iingenelo ze-MHEC kwii-strippers zepeyinti
Ukhuseleko kunye nokukhuselwa kwendalo:
Xa kuthelekiswa neziqhoboshi zemveli, i-MHEC yi-non-ionic cellulose ether, ayinazo izinto ezinobuthi neziyingozi, ikhuselekile emzimbeni womntu nakwindalo esingqongileyo, kwaye ihambelana nesikhokelo sophuhliso lwekhemistri eluhlaza yanamhlanje.
Uzinzo olugqwesileyo: I-MHEC inozinzo oluhle lweekhemikhali kuluhlu olubanzi lwe-pH (pH 2-12), inokugcina isiphumo sokutyeba esizinzileyo kwiinkqubo ezahlukeneyo zokususa ipeyinti, kwaye ayiphazanyiswa lula zezinye izinto ezikwinkqubo.
Ukuhambelana okuhle: Ngenxa yokuba i-MHEC ayisebenzisi i-ionic, ihambelana kakuhle nezithako ezininzi ezisebenzayo, ayizukusebenzisana okanye ibangele ukungazinzi kwenkqubo, kwaye ifanelekile kwiintlobo ezahlukeneyo zeendlela zokusika ipeyinti.
Isiphumo sokutyeba esisebenzayo: I-MHEC inokubonelela ngesiphumo esibalulekileyo sokutyeba, ngaloo ndlela inciphisa inani lezinye izithambisi kwisixhobo sokususa ipeyinti, ilula ifomula kwaye inciphise iindleko.
I-Methyl hydroxyethyl cellulose (MHEC) isetyenziswa kakhulu kwii-paint strippers zanamhlanje ngenxa yokuba ziqine kakhulu, zizinzile kwaye ziyahambelana. Ngokuyila kunye nokusetyenziswa kwefomyula efanelekileyo, i-MHEC inokuphucula kakhulu ukusebenza kwee-paint strippers, izenze zibonise ukusebenza kakuhle kunye nokukhuselwa kwendalo kwizicelo ezisebenzayo. Kwixesha elizayo, ngophuhliso oluqhubekayo lwetekhnoloji ye-paint strippers kunye nokuphuculwa ngakumbi kweemfuno zokukhuselwa kwendalo, amathuba okusetyenziswa kwe-MHEC kwii-paint strippers aya kuba banzi.
Ixesha leposi: Juni-14-2024