Maanta waxaan diiradda saari doonnaa sida loogu daro noocyo gaar ah oo dhumuc weyn leh.
Noocyada dhumuc-dhejiyeyaasha sida caadiga ah loo isticmaalo waa kuwa aan organic ahayn, cellulose, acrylic, iyo polyurethane.
Aan dabiici ahayn
Alaabada aan dabiiciga ahayn badanaa waa bentonite, silicon la shiiday, iwm., kuwaas oo guud ahaan lagu daro slurry-ka si loogu shiido, sababtoo ah way adag tahay in si buuxda loo kala firdhiyo sababtoo ah xoogga isku darka rinjiga ee caadiga ah.
Waxaa sidoo kale jira qayb yar oo horay loo kala firdhin doono oo loo diyaarin doono jel si loo isticmaalo.
Waxaa lagu dari karaa rinjiyada iyadoo la shiido si loo sameeyo xaddi gaar ah oo jel-ka hore ah. Waxaa sidoo kale jira qaar si fudud loo kala firdhin karo oo laga dhigi karo jel iyadoo la walaaqayo xawaare sare. Inta lagu jiro habka diyaarinta, isticmaalka biyaha diirran ayaa kor u qaadi kara habkan.
Cellulose
Badeecada cellulosic-ga ugu badan ee la isticmaalo waacellulose hydroxyethyl (HEC)Socod iyo simis la'aan liidata, biyo-celin aan ku filnayn, ka-hortagga caaryada iyo sifooyin kale, si dhif ah ayaa loogu isticmaalaa rinjiyeynta warshadaha.
Marka la mariyo, si toos ah ayaa loogu dari karaa ama biyo lagu milmi karaa kahor.
Kahor inta aan la isku darin, waa in fiiro gaar ah la siiyaa hagaajinta pH-ga nidaamka iyo xaaladaha alkaline, taas oo sahlaysa horumarkiisa degdegga ah.
Acrylic
Dhuxul-dhajiyeyaal akrilik ah ayaa leh adeegsiyo gaar ah oo ku saabsan rinjiyada warshadaha. Inta badan waxaa loo isticmaalaa dahaarka caadiga ah sida hal qayb iyo saamiga sare ee midab-ilaa-saldhigga, sida qaab-dhismeedka birta iyo biraha ilaalinta leh.
Jaakadda sare (gaar ahaan jaakadda sare ee cad), laba qaybood, varnish dubista, rinji dhalaalaya oo sarreeya iyo nidaamyo kale, waxay leedahay cillado mana noqon karto mid si buuxda u karti badan.
Mabda'a dhumucda ee dhumucda acrylic waa: kooxda carboxyl ee silsiladda polymer-ka waxaa loo beddelaa carboxylate ionized ah xaaladaha alkaline, saameynta dhumucdana waxaa lagu gaaraa iyada oo loo marayo ka-hortagga electrostatic.
Sidaa darteed, pH-ga nidaamka waa in loo hagaajiyaa alkaline ka hor inta aan la isticmaalin, pH-gana waa in lagu hayaa >7 inta lagu jiro kaydinta dambe.
Si toos ah ayaa loogu dari karaa ama lagu qasi karaa biyo.
Waxaa hore loo milmi karaa si loogu isticmaalo nidaamyada qaarkood ee u baahan xasillooni dheellitiran oo sareysa. Kuwaas waxaa ka mid ah: marka hore ku milmi dhumucda acrylic biyo, ka dibna ku dar hagaajiyaha pH intaad walaaqayso. Waqtigan, xalku si cad ayuu u dhumuc weynaanayaa, laga bilaabo caddaan caano leh ilaa koollo hufan, waxaana loo dayn karaa inuu u adkaysto isticmaal dambe.
Isticmaalka habkan wuxuu dhimayaa waxtarka dhumucda, laakiin wuxuu si buuxda u ballaarin karaa dhumucda marxaladda hore, taas oo sahlaysa xasilloonida nuugista ka dib marka rinjiga la sameeyo.
Habka diyaarinta iyo soo saarista rinjiga budada qalinka ah ee hal-qaybood ku salaysan biyaha ee H1260, dhumuc-dhegaha ayaa sidan loo isticmaalaa.
Polyurethane
Dhuxul-dhajiyeyaal polyurethane ah ayaa si weyn loogu isticmaalaa dahaarka warshadaha oo leh waxqabad aad u wanaagsan waxayna ku habboon yihiin in loo isticmaalo nidaamyo kala duwan.
Marka la isticmaalayo, ma jirto wax shuruud ah oo ku saabsan pH-ga nidaamka, waxaa lagu dari karaa si toos ah ama ka dib marka la qaso, ha ahaato biyo ama dareere. Qaar ka mid ah dhumuc-yareyaashu waxay leeyihiin hydrophilicity liita mana lagu qasi karo biyo, laakiin waxaa lagu qasi karaa oo keliya dareereyaal.
nidaamka emulsion-ka
Nidaamyada emulsion-ka (oo ay ku jiraan emulsions-ka acrylic iyo emulsions-ka hydroxypropyl) kuma jiraan dareereyaal waana kuwo si fudud loo dhumuc karo. Waxaa ugu wanaagsan in lagu daro ka dib marka la milmo. Marka la milmo, iyadoo loo eegayo waxtarka dhumucda ee dhumucda, milan saamiga gaarka ah.
Haddii waxtarka dhumucdu uu hooseeyo, saamiga milanka waa inuu hooseeyaa ama aan la qasin; haddii waxtarka dhumucdu uu sarreeyo, saamiga milanka waa inuu sarreeyaa.
Tusaale ahaan, SV-1540 oo biyo ku salaysan polyurethane associative thickener wuxuu leeyahay hufnaan sare oo dhumuc leh. Marka loo isticmaalo nidaamka emulsion-ka, guud ahaan waxaa lagu qasi karaa 10 jeer ama 20 jeer (10% ama 5%) si loo isticmaalo.
Kala-baxa Hydroxypropyl
Resin-ka kala firdhisan ee Hydroxypropyl laftiisu wuxuu ka kooban yahay xaddi gaar ah oo dareere ah, mana fududa in la qaro inta lagu jiro habka rinjiyeynta. Sidaa darteed, polyurethane-ka guud ahaan waxaa lagu daraa saamiga hoose ee milmida ama lagu daraa iyada oo aan lagu milmin nidaamkan.
Waxaa xusid mudan in saameynta badan ee dareereyaasha, saameynta dhumucda ee dhumucda badan ee polyurethane ee noocan ah nidaamkani aanu caddayn, oo dhumucda ku habboon loo baahan yahay in si gaar ah loo doorto. Halkan, waxaan jeclaan lahaa inaan ku taliyo dhumucda polyurethane ee biyaha ku salaysan ee SV-1140, kaas oo leh hufnaan dhumuc aad u sarreysa isla markaana leh waxqabad aad u wanaagsan nidaamyada dareeraha sare leh.
Waqtiga boostada: Abriil-25-2024