Intshayelelo
Ukunamathela kwepeyinti yinkalo ebalulekileyo yezicelo zokugqoka, ezichaphazela ixesha elide kunye nokuqina kweendawo ezipeyintiweyo.I-Hydroxypropyl methylcellulose (HPMC) izongezo ze-thickener ziye zafumana ukubaluleka ekwandiseni ukunamathela kwepeyinti ngenxa yokukwazi ukuguqula iimpawu ze-rheological kunye nokuphucula ukusebenza kwe-coating.
Ukuqonda HPMC Thickener Additives
I-HPMC yipolymer eguquguqukayo evela kwiselulosi, ebonelela ngogcino lwamanzi olugqwesileyo kunye neempawu zokujiya kwizisombululo ezinamanzi.Xa ifakwe kwiifom zepeyinti, i-HPMC yenza isakhiwo sothungelwano esinika i-viscosity kunye nokuzinza kwipeyinti.Ukongeza, i-HPMC inxibelelana namanye amacandelo epeyinti, iphucula ukuncamathela kwi-substrates ngokukhuthaza ukumanzisa okufanelekileyo kunye nokwakheka kwefilimu.
Ukuphucula iiParameters zoKuqulunqa
Ukusebenza kwezongezo ze-HPMC ezityebileyo ekwandiseni ukuncamathelwa kwepeyinti kuxhomekeke kwiiparamitha ezininzi zokuqulunqa, kubandakanywa uhlobo kunye noxinaniso lwe-HPMC, ukwakheka kwe-solvent, i-pigment dispersion, kunye namanqanaba e-pH.Abavelisi kufuneka baqhube iimvavanyo zokuhambelana ngokucokisekileyo ukumisela ulwazelelo olululo lwezicelo zokugquma.Ukulungelelanisa ezi parameters kunokwandisa iimpawu ze-rheological zepeyinti kunye nokuqinisekisa ukunamathela okufanayo kwii-substrates ezahlukeneyo.
Ukulungiswa kweSubstrate Surface
Ukulungiswa okufanelekileyo komphezulu kubalulekile ekukhuthazeni ukunamathela kwepeyinti kunye nokuthintela ukungaphumeleli kwangaphambi kwexesha.Ngaphambi kokusetyenziswa, i-substrates kufuneka ihlanjululwe, ihlanjululwe, kwaye, ukuba kuyimfuneko, ihlanjululwe ukususa ukungcola kunye nokudala indawo ehambelanayo yokubambelela.Iindlela zoomatshini ezifana nesanti okanye ukuqhushumba kwebrasive zingasetyenziswa ukuphucula uburhabaxa bomphezulu kunye nokuphucula ukudityaniswa koomatshini phakathi kwepeyinti kunye nesubstrate.
Iindlela zokuSebenza
Iindlela ezininzi zokusebenzisa zinokusetyenziswa ukwandisa izibonelelo zezongezo ze-HPMC ezityebileyo ekukhuthazeni ukuncamathela kwepeyinti:
I-Brashi kunye ne-Roller Application: Ukuxubha okanye ukuqengqeleka ipeyinti kwi-substrate ivumela ulawulo oluchanekileyo phezu kobunzima bokugquma kunye nokuqinisekisa ukugubungela ngokucokisekileyo.Ukusetyenziswa kweebrashi ezikumgangatho ophezulu kunye neeroli zinceda ukufezekisa ukuhanjiswa okufanayo kwepeyinti edibeneyo ye-HPMC, ukuphucula ukunamathela kunye nokwakheka kwefilimu.
Ukutshiza isicelo: Ukusetyenziswa kwesitshizi kunika uncedo ngokwesantya kunye nokusebenza kakuhle, ngakumbi kwiindawo ezinkulu okanye iijiyometri ezintsonkothileyo.Uhlengahlengiso olululo lweeparamitha zokutshiza ezifana noxinzelelo, ubungakanani bombhobho, kunye ne-engile yokutshiza kubalulekile ukuze kufezekiswe ukubekwa kwepeyinti ngeyona ndlela kunye nokumanzisa i-substrate.
Ukwaleka kokuntywiliselwa: Ukwaleka kokuntywiliselwa kubandakanya ukuntywila i-substrate kwindawo yokuhlambela yepeyinti etyetyisiweyo ye-HPMC, ukuqinisekisa ukugqunywa ngokupheleleyo kwayo yonke imiphezulu, kubandakanywa iindawo ekunzima ukufikelela kuzo.Ubuchwephesha busetyenziswa ngokuqhelekileyo kumashishini afana nokugqitywa kweemoto kunye nesinyithi, apho ukubambelela okufanayo kunye nokumelana nokubola kubaluleke kakhulu.
I-Electrostatic Coating: I-Electrostatic Coating isebenzisa umtsalane we-electrostatic ukufaka amasuntswana epeyinti kwi-substrate, ekhokelela ekuqiniseni ukunamathela kunye nokugubungela.Iipeyinti ezityetyisiweyo ze-HPMC zinokuqulunqwa ukuze zisetyenziswe kwi-electrostatic, zinika ukuhanjiswa okuphuculweyo kunye nokuncipha kokutshiza.
Iingqwalasela emva kwesicelo
Emva kokusetyenziswa kwepeyinti, iimeko ezifanelekileyo zokunyanga kunye nokomisa kufuneka zigcinwe ukuze kuququzelelwe ukubunjwa kwefilimu kunye nokwandisa iimpawu zokubambelela.Ukungena komoya okwaneleyo, ulawulo lobushushu, kunye nexesha lokunyanga zizinto ezibalulekileyo ekufuneka ziqwalaselwe, ukuqinisekisa uphuhliso lwengubo ehlala ixesha elide kunye nokubambelelayo.
I-Hydroxypropyl methylcellulose (HPMC) izongezo ze-thickener zibonelela ngeenzuzo ezixabisekileyo ekwandiseni ukuncamathelisa kwepeyinti kunye nokusebenza kokugquma.Ngokulungisa iiparamitha zokuqulunqa kunye nokusebenzisa iindlela ezifanelekileyo zokusetyenziswa, abavelisi banokusebenzisa amandla e-HPMC ukufezekisa ukunamathela okuphezulu kwii-substrates ezahlukeneyo.Utyalo-mali ekulungiseleleni umphezulu ofanelekileyo, ukukhetha iindlela ezifanelekileyo zokusebenzisa, kunye nokuqinisekisa iimeko zokunyanga ezona zifanelekileyo ngamanyathelo ayimfuneko ekwandiseni ukusebenza kakuhle kwezongezo ze-HPMC ezityebileyo ekukhuthazeni ukunamathela kwepeyinti.
Ixesha lokuposa: May-08-2024