Abavelisi be-coating bathi iingubo ezihlanjululwa ngamanzi zibhekisela kwiingubo ezilungiselelwe ukusuka kwi-emulsions njengezinto zokwenza ifilimu, apho i-resin-based based resin zichithwa kwii-solvents ze-organic, kwaye emva koko, ngoncedo lwe-emulsifiers, ii-resin zichithwa emanzini ngomatshini oqinileyo. ukuvuselela ukwenza i-emulsions, ebizwa ngokuba yi-post-emulsion, inokuhlanjululwa ngamanzi ngexesha lokwakha.
Ipeyinti elungiselelwe ngokongeza inani elincinci le-emulsion kwi-resin e-soluble yamanzi ayikwazi ukubizwa ngokuba yipeyinti ye-latex. Ukuthetha ngokuthe ngqo, ipeyinti yokunciphisa amanzi ayinakubizwa ngokuba yipeyinti yelatex, kodwa ikwahlelwa njengepeyinti yelatex ngokwendibano.
Izinto eziluncedo kunye nokungonakali kweengubo ezisekelwe emanzini
1. Ukusebenzisa amanzi njengesinyibilikisi konga izixhobo ezininzi. Iingozi zomlilo ngexesha lokwakha ziyaphetshwa kwaye ungcoliseko lomoya luyancitshiswa. Kuphela isixa esincinci se-alcohol ether organic solvent isetyenzisiweyo, ephucula iimeko zokusebenza.
2. I-solvent ye-organic yepeyinti eqhelekileyo yamanzi iphakathi kwe-10% kunye ne-15%, kodwa ipeyinti yangoku ye-cathodic electrophoretic iyancipha ibe ngaphantsi kwe-1.2%, enefuthe elibonakalayo ekunciphiseni ukungcola kunye nokugcina izixhobo.
3. Uzinzo lwe-dispersion kumandla anamandla oomatshini awona mahle kakhulu. Xa isantya sokuhamba kumbhobho ohambisayo sitshintsha kakhulu, amasuntswana asasaziweyo acinezelwa abe ngamasuntswana aqinileyo, okuya kubangela ukugqobhoza kwifilimu yokwaleka. Kuyafuneka ukuba umbhobho wokuhambisa ukwimo elungileyo kwaye udonga lombhobho alunaziphene.
4. Igqwesa kakhulu kwizixhobo zokugquma. I-Corrosion-resistant lining okanye izinto zensimbi ezingenasici ziyafuneka, kwaye iindleko zezixhobo ziphezulu kakhulu. Umhlwa kunye nokuchithwa kwesinyithi kumbhobho ohambisayo kunokubangela imvula kunye nokugqobhoza kwamasuntswana achithakeleyo kwifilimu yokwambathisa, ngoko ke kusetyenziswa imibhobho yentsimbi engenasici.
Ukugqiba isicelo kunye nendlela yokwakha yabenzi bepeyinti
1. Lungisa ipeyinti kwi-viscosity efanelekileyo yokutshiza ngamanzi acocekileyo, kwaye ulinganise i-viscosity ngeTu-4 viscometer. I-viscosity efanelekileyo idla imizuzwana emi-2 ukuya kwe-30. Umenzi wepeyinti uthe ukuba akukho viscometer, ungasebenzisa indlela ebonakalayo yokuvuselela ipeyinti ngentonga yentsimbi, ugxobhoze ubude be-20 cm kwaye uyeke ukujonga.
2. Uxinzelelo lomoya kufuneka ulawulwe kwi-0.3-0.4 MPa kunye ne-3-4 kgf / cm2. Ukuba uxinzelelo luphantsi kakhulu, ipeyinti ayiyi ku-atomize kakuhle kwaye umphezulu uya kugotywa. Ukuba uxinzelelo lukhulu kakhulu, kulula ukudilika, kwaye inkungu yepeyinti inkulu kakhulu ukuba ingachitha izinto kwaye ichaphazela impilo yabasebenzi bokwakha.
3. Umgama phakathi kwe-nozzle kunye nomphezulu wento yi-300-400 mm, kwaye kulula ukugoba ukuba isondele kakhulu. Ukuba ikude kakhulu, inkungu yepeyinti iya kungalingani kwaye kuya kubakho ukugoba. Ukuba umkhala uthe ukude nomphezulu wento leyo, inkungu yepeyinti iya kunwebeka endleleni, ibangele inkunkuma. Umenzi wepeyinti uthe umgama othile unokumiselwa ngokohlobo lwepeyinti, i-viscosity kunye noxinzelelo lomoya.
4. Umpu wokutshiza unokunyuka kwaye uhla, ukhohlo nasekunene, kwaye unokubaleka ngokulinganayo ngesantya se-10-12 m / min. Kufuneka iqonde kwaye ijonge ngqo kumphezulu wento. Xa utshiza kumacala omabini obuso bento, isandla esitsala i-trigger yompu wokutshiza kufuneka sikhutshwe ngokukhawuleza. Vula, oku kuya kunciphisa inkungu yepeyinti.
Ixesha lokuposa: Jan-18-2024