Amazi ashingiye ku mazi (VOC & HAPs) ashobora gutegurwa kuva epoxy ya aliphatic yamazi na polimeri yuzuye ya capropone polyol kandi irashobora gukoreshwa hamwe nibikoresho bisanzwe kandi ifite ubushobozi bwo gusimbuza ifu yifu.Ni izihe ngingo zokwitabwaho mugutegura amazi. aliphatic epoxy fluid coatings? Impuguke ya epoxy resin yinganda zinzobere zashizeho intangiriro idasanzwe muminsi yashize.
Ibikoresho by'ibanze gushora imari ikenewe kumurongo mushya wo gutwika ifu birashobora kwirindwa ukoresheje ibikoresho bisanzwe byo gutera amazi.Iyi myenda irashobora guhindurwa mukuyungurura amazi cyangwa mukubyimba amazi ashingiye kumazi hamwe na selile ya selile. Hamwe na diglycidyl ether isanzwe ya bisphenol A (bpa) resin, alicyclic epoxy ifite ibintu byinshi bikurikira: itandukaniro riri hagati ya A nkumunyururu nyamukuru alifatique, reaction hamwe na aside byihuse, ariko hamwe na amine / amide epoxy ikiza imiti ikunze gukoreshwa cyane cyane ntigire icyo ikora, ntabwo irimo chlorine, viscosity ya 350 centipoise na diglycidyl ether ya bisphenol A (bpa) resin nka 11000 centipoise, icyarimwe ifite kandi ibihe byiza byo guhangana nikirere.Ikoreshwa rya viscosity nkeya aliphatic epoxy muri cationic UV yatwikiriye yariyongereye cyane.Habayeho raporo nyinshi zerekeye imyiteguro n'imiterere y'ubu bwoko bwa 100% bukomeye butagira “VA”, ariko hariho ibitabo bike birambuye kubijyanye no kubishyira mu bikorwa byo gutwika amashyuza.Mu ihame, cationic UV coating formula tekinike tekinike-uburyo nayo ishobora gukoreshwa muri sisitemu yo gukiza amashyuza, ariko byombi nabyo bifite bitandukanye nko gutwikira UV muri rusange ntabwo bitera gutera ubwubatsi, bityo ubwiza bwubwubatsi bukaba burenze gutera ibiti bivura amashyuza, muburyo bwo guteka ubwoko bwa cationic coating water bushobora gukoreshwa nka VOC diluent.
Cepolactone polyole yakoreshejwe nk'imiti ikoreshwa neza kugirango ikoreshwe kandi irashobora kwihutisha gukira kwa cationic UV.Amatsinda ya hydroxyl yiyi polyole mubitereko bya UV ntishobora kwihutisha gukira gusa, ariko kandi biganisha no gukira gukira kwinshi kubushuhe.Mu gipimo cyo gukiza ubushyuhe kubera ubushuhe buke mu ziko, ubuhehere ntibubuza gukira.Hariho ya polyole yongerera kwihanganira amazi, kugirango amazi ashobore gukoreshwa nkinanura ya VOC muburyo bwo gusiga amarangi agizwe na epoxique ya alifatique na polyoli, mubyukuri ni ibinyabuzima binini cyane bivangwa n'amazi. Kuvomera amazi bifite ibyiza bibiri: ubukonje buke muri kutabaho kwa VOC, no gukoresha ingamba zisanzwe kandi zizwi zishingiye ku mazi zishingiye ku gusiga amarangi kugira ngo wirinde kumanikwa no kugenzura imiterere. Kubera ko buri kintu cyose kiri muri formula kitagaragara neza n'amazi, umubare w'amazi ashobora kwinjizwa ni make.Hagomba kwitonderwa kugirango wirinde kongeramo amazi menshi kugirango utandukane.
Ibibyimba bya selile bigira akamaro mu gutwikira amazi, ariko ntibisobanutse niba bifite akamaro mu 100% bikomeye, bivangwa n'amazi ya alipatique epoxy ya epoxy.Ibikorwa byambere byerekanaga ko amazi ya epoxide 100% yavanze n'amazi yari thixotropique iyo apimye hamwe na viscometer ya Brookfield. .Iperereza ryibibyimba bitandukanye byerekana ko umubyimba wa selile ufite ibintu byiza byuzuye.Iyo ushyushye kuri 40 ~ 60 ℃, isura nziza ya firime irashobora kuboneka ukoresheje imbunda ya spray.Ubushyuhe buke bwubaka butuma firime ikize itanga igishishwa cyinshi cya orange. Impuguke z’ishyirahamwe ry’inganda zitwa chino epoxy resin zavuze ko inyungu nyamukuru yo gutwika ifu yometse ku buryo bunoze, imikorere myiza ahanini iterwa no kugarura ifu kugirango igerweho, kugeza ifu yifu ihwanye ubu bwoko bwamazi akenera uburyo bumwe bwo kugarura irangi ryisazi.Kubera ko irangi ryasobanuwe hano ridafite umusemburo kama kugirango ukire byoroshye, amazi yatakaye mugikorwa cyo gukira arashobora guhinduka byoroshye mugupima amashanyarazi mugihe bibaye ngombwa, bizigama ingufu by bisaba ubushyuhe buke bwo guteka ugereranije nubushyuhe bwo hejuru bwo guteka busabwa kugirango ifu yifu. Ubundi buryo busuzumwa ni ugutera epoxies anhydrous, polyol, na pigment hamwe nuburyo bwa "Unicarb", bukora neza kuruta gutwika ifu.Niba nta VOC yubusa isabwa, ongeraho ibisubizo kuri formula.
Ku byerekeye inoti, impuguke z’ishyirahamwe ry’inganda mu Bushinwa epoxy resin zavuze ko, kugira ngo zikire cationic kuko alkali izahagarika gukira, bityo inyongeramusaruro zose hamwe n’ibikoresho bigenzura imiterere ya rheologiya ntibigomba kuba birimo alkaline, pigment ya alkaline na amine bivura pigment bizabuza gukira.Alkalescent niba pigine pigment izabikora ibuza kandi gukiza cationic, pigment ya alkaline ninyongeramusaruro muri cationic curing coating ntishobora gukoreshwa, gukira biterwa na catalizator FC-520 mukigereranyo gito cya amine sealant volatilisation, niba firime ari ndende cyane cyangwa ifuru idahumeka, amine ntishobora gukurwaho burundu muri firime no kubuza gukira.Ubushishozi bwiyongereye hamwe no kwiyongera kwa polyol ishami ryiyongereye: inzoga ya dibasic irenze amafaranga atatu cyangwa ane yinjiza yinjiza make yo kwisiga irangi, inzoga na glycol basangiye gukenera kongera agaciro ka epoxy ( R) irashobora kuboneka mugukingirana gukomeye, urugero rwinshi rwa epoxy ruswa irashobora kunozwa, kwiyongera kwa dosiye ya catalizator birashobora kwihutisha umuvuduko wo gukira ariko kandi birashobora kugabanya ruswa, igipimo cyimitsi ya epoxy na hydroxyl R gifite uruhare runini kumuvuduko wo gukira .
Ibyo ari byo byose, epoxy ya alicyclic hamwe na caprolactone polyol ifite ubukonje buke ndetse nta na VOC itwikiriye, igifuniko gishobora kuvangwa n'amazi kugirango gitere ibibyimba, umubyimba wa selile urashobora guha amazi ya 100% epoxy ikomeye hamwe na polyole bifata kugirango birinde neza kugabanuka, sisitemu yo gukiza umuvuduko byemejwe nimpinduka zikurikira: igipimo cya molarike ya epoxy na hydroxyl, inzoga nyinshi ninshingano za epoxy, dosiye ya catalizator hamwe nubushyuhe bwo gukiza, formula irashobora gukoreshwa byoroshye mugutegura irangi, kuko ubu bwoko bwo gutwikira cationic gukiza irangi ryibanze na substrate birashobora kubuza gukira.
Igihe cyo kohereza: Apr-06-2021