Sezvo viscosity ye resin inobva mumvura yakaderera zvikuru, haigone kuzadzisa zvinodiwa pakuchengetedza uye kushanda kwekugadzira pendi, saka zvakakosha kushandisa thickener yakakodzera kugadzirisa viscosity ye viscosity ye pendi inobva mumvura kuti ive chaiyo.
Kune mhando dzakawanda dzezvikukutu. Pakusarudza zvikukutu, pamusoro pekushanda kwazvo kwekukutu uye kutonga kwezvekuputira, zvimwe zvinhu zvinofanirwa kutariswa kuti chifukidzo chive nekushanda kwakanakisa kwekuvaka, chitarisiko chakanakisa chefirimu rekuputira uye hupenyu hwebasa hwakareba.
Kusarudzwa kwemhando dzezvinokora kunonyanya kuenderana nekudiwa uye mamiriro chaiwo emushonga wacho.
Pakusarudza nekushandisa zvinosimbisa ganda, izvi zvakakosha.
1. HEC ine huremu hwakawanda hwemamorekuru ine mwero mukuru wekupindirana kana tichienzanisa nehuremu hushoma hwemamorekuru uye inoratidza kushanda zvakanaka kwekukora panguva yekuchengetera. Uye kana mwero wekuchekwa ukawedzera, mamiriro ekumonera anoparadzwa, mwero wekuchekwa unowedzera, mhedzisiro yehuremu hwemamorekuru pa viscosity inoderera. Iyi nzira yekukora haina chekuita nezvinhu zvepasi, pigments nezvimwe zvinoshandiswa, zvinongoda kusarudza huremu hwakakodzera hwemamorekuru e cellulose uye kugadzirisa huwandu hwe thickener inogona kuwana viscosity yakakodzera, uye nokudaro inoshandiswa zvakanyanya.
2. HEUR thickener imvura ine diol kana diol ether se co-solvent, ine huwandu hwakasimba hwe20% ~ 40%. Basa re co-solvent nderekudzivirira kunamira, zvikasadaro thickeners dzakadaro dzine gel state ine huwandu hwakafanana. Panguva imwe chete, kuvapo kwe solvent kunogona kudzivirira chigadzirwa kuti chisaome, asi chinofanira kupiswa munguva yechando usati washandisa.
3. Zvigadzirwa zvisina simba rakawanda, zvine viscosity shoma zviri nyore kurasa uye zvinogona kutakurwa nekuchengetwa zvakawanda. Saka, mamwe ma HEUR thickeners ane huwandu hwakasiyana hwezvinhu zvakafanana. Hunhu hwe co-solvent hwe low viscosity thickeners hwakakwira, uye mid-shear viscosity yependi ichave yakaderera zvishoma kana ikashandiswa, izvo zvinogona kugadziriswa nekuderedza co-solvent inowedzerwa kune imwe nzvimbo muchimiro.
4. Kana paine mamiriro akakodzera ekusanganisa, HEUR ine viscosity yakaderera inogona kuwedzerwa zvakananga ku latex paints. Paunenge uchishandisa zvigadzirwa zvine viscosity yakawanda, thickener inofanira kusanganiswa nemusanganiswa wemvura uye co-solvent isati yawedzerwa. Kana ukawedzera mvura kuti unyungudise thickener zvakananga, zvinoderedza huwandu hwe co-solvent yekutanga muchigadzirwa, izvo zvichawedzera kunamira uye zvinokonzera viscosity kukwira.
5. Kuwedzera chikobvu mutangi rekusanganisa kunofanira kunge kwakadzikama uye kunonoka, uye kunofanira kuiswa pamadziro etangi. Kumhanya kwekuwedzera hakufanirwe kunge kuri kukuru zvekuti chikobvu chinoramba chiri pamusoro pemvura, asi chinofanira kudhonzwa mumvura uye kutenderedzwa pasi chakatenderedza shaft yekusanganisa, zvikasadaro chikobvu hachizosanganiswa zvakanaka kana kuti chikobvu chichakobvu zvakanyanya kana kupwanyika nekuda kwekuwanda kwenzvimbo yacho.
6. Chinogocha cheHEUR chinowedzerwa mutangi rekusanganisa pendi mushure mezvimwe zvikamu zvemvura uye usati waisa emulsion, kuitira kuti ive nechokwadi chekuti yakanatswa zvakanyanya.
7. Zvishandiso zvinosimbisa HASE zvinowedzerwa zvakananga papendi nenzira ye emulsion mukugadzira pendi ye emulsion pasina kusanganiswa kwekutanga kana kusanganiswa kwekutanga. Zvinogona kuwedzerwa sechikamu chekupedzisira muchikamu chekusanganisa, muchikamu chekupararira kwepigment, kana sechikamu chekutanga muchikamu chekusanganisa.
8. Sezvo HASE iri emulsion ine acid yakawanda, mushure mekuwedzera, kana paine alkali mupendi ye emulsion, ichakwikwidzana ne alkali iyi. Nokudaro, zvinodikanwa kuwedzera HASE thickener emulsion zvishoma nezvishoma uye zvishoma nezvishoma, uye kusanganisa zvakanaka, zvikasadaro, zvichaita kuti pigment dispersion system kana emulsion binder isagadzikane, uye yekupedzisira inogadzikiswa neboka repamusoro risina kusimba.
9. Alkali inogona kuwedzerwa usati wawedzera kana kuti mushure mekunge chinhu chinosimbisa kukora chawedzerwa. Chakanakira chekuwedzera usati washandisa ndechekuona kuti hapana kusagadzikana kwenzvimbo yekupararira kwepigment kana emulsion binder kuchakonzerwa nechinhu chinosimbisa kukora chichitora alkali kubva pamusoro pepigment kana binder. Chakanakira chekuwedzera alkali mushure mekushandisa ndechekuti zvidimbu zvinosimbisa zvinopararira zvakanaka zvisati zvazvimba kana kunyungudutswa nealkali, zvichidzivirira kukora kana kuungana kwenzvimbo, zvichienderana nekugadzirwa, michina uye maitiro ekugadzira. Nzira yakachengeteka ndeyekusanganisa HASE thickener nemvura kutanga wozoibvisa nealkali pachine nguva.
10. HASE thickener inotanga kuzvimba pa pH inosvika 6, uye kushanda zvakanaka kwekukora kunotanga kushanda zvizere pa pH inosvika 7 kusvika 8. Kugadzirisa pH ye latex pendi kusvika pamusoro pe 8 kunogona kudzivirira pH ye latex pendi kuti isaderere pasi pe 8, nokudaro zvichiita kuti viscosity igare yakasimba.
Nguva yekutumira: Nyamavhuvhu-05-2022