Uyu munsi tuzibanda ku buryo bwo kongeramo ubwoko bwihariye bw'ibirungo binini.
Ubwoko bw'ibinyabutabire bikunze gukoreshwa ni ibisanzwe ari inorganic, cellulose, acrylic, na polyurethane.
Inorganic
Ibikoresho bidafite umwimerere ahanini ni bentonite, silicon ifumye, nibindi, muri rusange byongerwa mu gishishwa cyo gusya, kuko bigoye kubikwirakwiza burundu bitewe n'imbaraga zisanzwe zo kuvanga irangi.
Hari kandi igice gito kizaba cyarashyizwemo gel kugira ngo gikoreshwe.
Zishobora kongerwa mu irangi hakoreshejwe gusya kugira ngo hakorwe ingano runaka ya gel isanzwe. Hari kandi zimwe zoroshye gukwirakwiza kandi zishobora gukorwamo gel hakoreshejwe gukurura cyane. Mu gihe cyo gutegura, gukoresha amazi ashyushye bishobora guteza imbere iki gikorwa.
Selilulose
Igicuruzwa cya cellulosic gikoreshwa cyane niselulose ya hydroxyethyl (HEC). Kubera ko amazi atemba nabi kandi ntangana neza, amazi adahagije, arwanya imyuka n'ibindi bintu, ntabwo ikoreshwa cyane mu marangi yo mu nganda.
Iyo ikoreshejwe, ishobora kongerwamo cyangwa igashongeshwa mu mazi mbere y'igihe.
Mbere yo kongeramo, hakwiye kwitabwaho guhindura pH y'urusobe rw'amazi mu buryo bwa alkaline, ibyo bikaba bituma rutera imbere vuba.
aruleri
Imashini zikora acrylic zifite akamaro kanini mu marangi yo mu nganda. Zikoreshwa cyane cyane mu gusiga irangi risanzwe nk'igice kimwe n'ikigereranyo kinini cy'ibara kuva ku gipimo cya mbere kugeza ku gipimo cyacyo, nk'ibyuma n'ibikoresho birinda.
Muri topcoat (cyane cyane clear topcoat), ibice bibiri, vernish yo gutekesha, irangi ribengerana cyane n'izindi sisitemu, ifite inenge zimwe na zimwe kandi ntishobora kuba ikora neza.
Ihame ryo gukurura ubunini bw'icyuma gikurura ubunini cya acrylic ni iri: itsinda rya karubokisili riri ku munyururu wa polymer rihindurwamo karubokisiliti ya iyoni mu gihe cy'imiterere ya alkaline, kandi ingaruka zo gukurura ubunini zigerwaho binyuze mu kwirukana amashanyarazi.
Bityo rero, pH y'iyi sisitemu igomba guhindurwa ikaba alkaline mbere yo kuyikoresha, kandi pH nayo igomba kuguma kuri >7 mu gihe cyo kubika nyuma.
Ishobora kongerwamo cyangwa igashyirwamo amazi.
Ishobora gushonga mbere kugira ngo ikoreshwe muri sisitemu zimwe na zimwe zisaba ubushyuhe bwinshi. Ni ukuvuga: banza uvange n'amazi mu gice cyo hejuru cy'umuti wa acrylic, hanyuma wongeremo agakoresho gapima pH mu gihe uvangavanga. Muri iki gihe, umuti urushaho gukomera, kuva ku mweru usa n'amata kugeza ku ifu ibonerana, kandi ushobora gusigara kugira ngo ukoreshe nyuma.
Gukoresha ubu buryo bigabanya ubushobozi bwo gukurura, ariko bishobora kwagura burundu icyuma gikurura mu ntangiriro, ibyo bikaba bituma irangi riguma neza nyuma yo gukora irangi.
Mu gukora no gukora irangi rya H1260 ry’ifu y’ifeza rikozwe mu mazi, ikoreshwa muri ubu buryo.
Polyurethane
Ibikoresho binini bya polyurethane bikoreshwa cyane mu gusiga irangi mu nganda bifite imikorere myiza kandi birakwiriye gukoreshwa mu buryo butandukanye.
Mu ikoreshwa, nta gipimo cya pH gisabwa kuri sisitemu, gishobora kongerwamo ako kanya cyangwa nyuma yo gushonga, haba hakoreshejwe amazi cyangwa solvent. Hari ibintu bigabanya ubukana bw'amazi kandi ntibishobora gushonga n'amazi, ahubwo bishobora gushonga gusa hakoreshejwe solvent.
sisitemu ya emulsion
Sisitemu za Emulsion (harimo na emulsion za acrylic na emulsion za hydroxypropyl) ntabwo zirimo ibintu bishongesha kandi byoroshye kubigabanya. Ni byiza kubishyiramo nyuma yo kubigabanya. Mu gihe ugabanya, ukurikije ubushobozi bw'ikintu gishongesha, gabanya igipimo runaka.
Iyo ubushobozi bwo gucukura buri hasi, igipimo cyo gucukura kigomba kuba gito cyangwa ntigicukure; niba ubushobozi bwo gucukura buri hejuru, igipimo cyo gucukura kigomba kuba kinini.
Urugero, SV-1540 ikoze mu mazi ifite ubushobozi bwo gukuba cyane. Iyo ikoreshejwe muri sisitemu ya emulsion, muri rusange ivangwa inshuro 10 cyangwa 20 (10% cyangwa 5%) kugira ngo ikoreshwe.
Gutatanya kwa Hydroxypropyl
Resin ya Hydroxypropyl dispersion ubwayo irimo ingano runaka ya solvent, kandi ntabwo byoroshye kuyibyimbisha mu gihe cyo gukora irangi. Kubwibyo, polyurethane muri rusange yongerwamo mu gipimo gito cyo gushonga cyangwa yongerwamo nta gushonga muri ubu bwoko bw'irangi.
Ni ngombwa kumenya ko bitewe n’ingaruka z’ibintu byinshi biyungurura, ingaruka zo gukuba kw’ibintu byinshi biyungurura polyurethane muri ubwo buryo ntizigaragara, kandi ikintu gikwiye gikwiye gutoranywa mu buryo bwitondewe. Aha, ndagira ngo nguhe inama yo gukuba kw’ibintu biyungurura polyurethane bishingiye ku mazi bya SV-1140, bifite ubushobozi bwo gukuba kandi bifite imikorere myiza mu bintu biyungurura polyurethane.
Igihe cyo kohereza: 25 Mata 2024