Resine zivurwa n'amazi zikoreshwa mu mbaho ​​zo mu nganda

Ubuhanga bwa UV bukoreshwa mu mazi (WB) bwagaragaje iterambere rikomeye mu masoko y’imbaho ​​zo mu nganda kuko ikoranabuhanga ritanga umusaruro mwiza, imyuka mike ihumanya ikirere ndetse n’umusaruro wiyongera. Sisitemu zo gusiga UV ziha umukoresha wa nyuma inyungu zo kudakora neza mu binyabutabire no gushwanyagurika, kudakora neza cyane, VOC nke cyane ndetse n’ibikoresho bike bifite umwanya muto wo kubika. Izi sisitemu zifite imiterere igereranywa neza na sisitemu ebyiri za urethane zidafite ingorane zo guhuza ibintu biteje akaga ndetse n’ibibazo byo kubaho kw’inkono. Sisitemu muri rusange ihendutse kubera umuvuduko w’umusaruro wiyongera kandi ikiguzi cy’ingufu gito. Izi nyungu zimwe zishobora kuba ingirakamaro ku bikorwa byo hanze bikoreshwa mu ruganda harimo n’amadirishya n’inzugi, impande n’ibindi bikorwa by’inganda. Ibi bice by’isoko bisanzwe bikoresha emulsion za acrylic na polyurethane dispersions kuko bifite ubwiza bwiza kandi bigumana amabara, kandi bigaragaza ko biramba cyane. Muri ubu bushakashatsi, resine za polyurethane-acrylic zifite imikorere ya UV zasuzumwe hakurikijwe ibipimo by’inganda ku bikorwa byo mu nganda zo mu nganda no hanze.

Ubwoko butatu bw'imyenda ishingiye ku biti ikunze gukoreshwa mu nganda. Lacquer ya Nitrocellulose ubusanzwe ni uruvange ruto rw'amavuta ya nitrocellulose n'amavuta cyangwa alkyd zishingiye ku mavuta. Izi myenda iruma vuba kandi ifite ubushobozi bwo kugaragara cyane. Ubusanzwe ikoreshwa mu bikoresho byo mu rugo. Ifite ikibazo cyo guhinduka umuhondo uko igihe kigenda gihita kandi ishobora kwangirika. Ifite kandi ubushobozi buke bwo kudakoresha imiti. Lacquer za Nitrocellulose zifite VOC nyinshi cyane, akenshi kuri 500 g / L cyangwa irenga. Lacquer zabanje gukoreshwa ni uruvange rwa nitrocellulose, amavuta cyangwa alkyd zishingiye ku mavuta, plasticizers na urea-formaldehyde. Zikoresha aside catalyst nke nka butyl aside phosphate. Izi myenda imara amezi agera kuri ane. Zikoreshwa mu bikoresho byo mu biro, mu bigo no mu ngo. Lacquer zabanje gukoreshwa zifite ubushobozi bwo kudakoresha imiti kurusha lacquer za nitrocellulose. Zifite kandi VOC nyinshi cyane. Varnishes zo guhindura ni uruvange rwa alkyd zishingiye ku mavuta, urea formaldehyde na melamine. Bakoresha aside catalyst ikomeye nka aside p-toluene sulfonic. Bashobora kumara amasaha 24 kugeza kuri 48 mu nkono. Bakoreshwa mu kabati ko mu gikoni, mu bikoresho byo mu biro no mu bikoresho byo mu ngo. Varnish zo guhindura imiterere yazo zifite imiterere myiza y’ubwoko butatu bw’imyenda ishingiye ku biti bikunze gukoreshwa mu nganda. Bafite VOC nyinshi cyane na formaldehyde.

Amavuta ya acrylic yihuza ubwayo n'amazi hamwe n'amabara ya polyurethane ashobora kuba amahitamo meza cyane kuruta ibikoresho bivamo ibinyabutabire mu nganda. Amavuta ya acrylic atanga ubushobozi bwo kurwanya imiti n'ibice, ubukana bwiza cyane, aramba cyane kandi adashobora kwihanganira ikirere, kandi arushaho gufata neza ubuso budafite imyenge. Agira ibihe by'izuba ryinshi, bigatuma akabati, ibikoresho byo mu nzu cyangwa uruganda rukora ibikoresho by'ubwubatsi rushobora gufata ibice nyuma yo kuyakoresha. Amavuta ya PUD atanga ubushobozi bwo guhangana n'amabara, ubworoherane, kandi agatuma arwanya gushwanyagurika no kwangirika. Ni abafatanyabikorwa beza mu kuvanga n'amavuta ya acrylic kugira ngo anonosore imiterere ya mekanike. Amavuta ya acrylic na PUD zombi zishobora gukorana n'ibinyabutabire bihuza nka polyisocyanates, polyaziridine cyangwa carbodiimides kugira ngo bikore irangi rya 2K rifite imiterere myiza.

Irangi rya UV rivurwa n'amazi ryabaye amahitamo akunzwe yo gukoresha mu mbaho ​​zo mu nganda. Abakora ibikoresho byo mu gikoni n'ibikoresho byo mu nzu bahitamo izi rangi kuko zifite ubushobozi bwo guhangana n'ingufu za mekanike, ubushobozi bwo kuzikoresha neza ndetse n'imyuka mike cyane ihumanya ikirere. Irangi rya UV rya WB rifite ubushobozi bwo guhangana n'ibyuma neza nyuma yo kuzitunganya, bigatuma ibice byazo bishyirwa hamwe, bigapakirwa kandi bigahita biva aho byakorewe nta gihe cyo kuzitunganya. Irangi rya UV rya WB riteye ubwoba kandi ribaho mu masegonda make. Irangi rya UV rya WB rirwanya imiti n'ibizinga kurusha irya varnish zikoreshwa mu gushonga.

Udupira twa WB UV dufite ibyiza byinshi. Nubwo oligomer za UV zikomeye 100% akenshi ziba zifite ubukana bwinshi kandi zigomba gukurwamo n'ibinyabutabire bihindura imiterere, WB UV PUDs zifite ubukana buke, kandi ubukana bushobora guhindurwa hakoreshejwe uburyo bwa WB rheology. WB UV PUDs zifite uburemere bwinshi bwa molekile kandi ntizubaka uburemere bwa molekile kuko zikira cyane nka 100% bya UV bikomeye. Kubera ko zigira ubukana buke cyangwa nta na bumwe zigabanya uko zikira, WB UV PUDs zifite uburyo bwiza bwo gufatana n'ibintu byinshi. Ubwiza bw'iyi mipira bugenzurwa byoroshye hakoreshejwe ibikoresho gakondo byo gupfuka. Izi polymers zishobora gukomera cyane ariko kandi zigahinduka cyane, bigatuma ziba nziza cyane ku biti byo hanze.