Iingubo ezikumgangatho ophezulu ezinyangekayo yi-UV zisetyenzisiwe ukwenza umgangatho, ifenitshala kunye neekhabhathi iminyaka emininzi. Uninzi lweli xesha, i-100%-eqinile kunye ne-solvent-based-UV-curable coatings ibe yeyona teknoloji ibalaseleyo kwimarike. Kwiminyaka yakutshanje, itekhnoloji yokwambathisa enyangekayo esekwe emanzini ikhulile. I-resins enyangekayo ye-UV esekwe ngamanzi ibonakalise ukuba sisixhobo esiluncedo kubavelisi ngezizathu ezahlukeneyo, kubandakanya ukudlula ibala le-KCMA, uvavanyo lokumelana nemichiza, kunye nokunciphisa ii-VOCs. Ukuze le teknoloji iqhubeke ikhula kule marike, abaqhubi abaninzi baye bachongwa njengeendawo eziphambili apho kufuneka kwenziwe uphuculo. Ezi ziyakuthatha i-resin ezinyangekayo ze-UV esekwe emanzini ngaphaya nje kokuba "kufuneka ube nazo" uninzi lweereyini ezinazo. Baza kuqalisa ukongeza iipropathi ezixabisekileyo kwi-coating, ukuzisa ixabiso kwindawo nganye ecaleni kwekhonkco lexabiso ukusuka kwifomula yokwambathisa ukuya kwisifakeli sefektri ukuya kwisifakeli kwaye, ekugqibeleni, kumnini.
Abavelisi, ngakumbi namhlanje, banqwenela isambatho esiya kwenza okungakumbi kunokudlula nje iinkcukacha. Kukwakho nezinye iipropathi ezibonelela ngeenzuzo kwimveliso, ukupakisha, kunye nokufakwa. Olunye uphawu olunqwenelekayo kukuphucula ukusebenza kakuhle kwezityalo. Ukugquma okusekelwe emanzini oku kuthetha ukukhutshwa kwamanzi ngokukhawuleza kunye nokuthintela ngokukhawuleza ukuchasana. Olunye uphawu olunqwenelekayo kukuphucula uzinzo lwe-resin ukuze kubanjwe / kusetyenziswe kwakhona i-coating, kunye nolawulo lwe-inventory yabo. Kumsebenzisi wokugqibela kunye nomfakeli, iimpawu ezinqwenelekayo zingcono ukumelana nokutshisa kwaye akukho phawu lwentsimbi ngexesha lofakelo.
Eli nqaku liza kuxoxa ngophuhliso olutsha kwi-polyurethanes enyangekayo ye-UV esekwe emanzini enika ukuphuculwa kakhulu kwe-50 °C ukuzinza kwepeyinti ecacileyo, kunye neengubo ezinemibala. Ikwaxubusha indlela ezi resin ezijongene ngayo neempawu ezifunwayo ze-coating applicator ekwandiseni isantya somgca ngokukhutshwa kwamanzi okukhawulezayo, ukuphuculwa kokumelana nebhloko, kunye nokuchasana kwe-solvent kumgca, okuphucula isantya sokupakisha kunye nokupakisha imisebenzi. Oku kuya kuphucula umonakalo ongekho emgceni owenzeka ngamanye amaxesha. Eli nqaku likwaxoxa ngophuculo olubonakaliswe kwibala kunye nokumelana nemichiza ebalulekileyo kubafaki kunye nabanini.
Imvelaphi
Ubume boshishino lwezogquma buhlala buguquka. “Izinto ekufuneka ubenazo” zokudlulisa nje iinkcukacha ngexabiso elifanelekileyo ngemil efakiweyo akwanelanga. Imbonakalo-mhlaba yeengubo ezifakwe kwifektri kwikhabhinethi, i-jointry, flooring, kunye nefenitshala iguquka ngokukhawuleza. Abaqulunqi ababonelela ngeempahla kwiifektri bayacelwa ukuba benze iingubo zokugquma ezikhuselekileyo ukuze abasebenzi bazifake, basuse izinto ezibaxhalabisayo kakhulu, batshintshe ii-VOC ngamanzi, kwaye basebenzise i-carbon yefosili encinane kunye ne-bio carbon eninzi. Inyani yeyokuba kulo lonke ikhonkco lexabiso, umthengi ngamnye ucela i-coating ukuba yenze okungakumbi kunokuhlangabezana nenkcazo.
Libona ithuba lokudala ixabiso elingakumbi lomzi-mveliso, iqela lethu laqalisa ukuphanda kwinqanaba lomzi-mveliso imicelimngeni ababejongene nayo aba bafaki-zicelo. Emva kodliwano-ndlebe oluninzi saqala ukuva imixholo eqhelekileyo:
- Izithintelo zokuvumela zithintela iinjongo zam zokwandisa;
- Iindleko ziyenyuka kwaye nohlahlo lwabiwo-mali lwenkunzi luyehla;
- Iindleko zamandla kunye nabasebenzi ziyenyuka;
- Ilahleko yabasebenzi abanamava;
- Iinjongo zethu zeSG&A zeshishini, kunye nezo zomthengi wam, kufuneka zifezekiswe; kwaye
- Ukhuphiswano lwaphesheya.
Le mixholo ikhokelele kwiinkcazo zexabiso-isiphakamiso esaqala ukuhambelana nabafaki be-polyurethanes e-UV-curable polyurethanes esekelwe emanzini, ngakumbi kwindawo yemarike yokudibanisa kunye nekhabhinethi efana nale: "abavelisi bokudibanisa kunye nekhabhinethi bafuna uphuculo ekusebenzeni kwefektri" kunye "nabavelisi. bafuna amandla okwandisa imveliso kwimigca emifutshane yemveliso enomonakalo omncinci wokuphinda usebenze kwakhona ngenxa yezaleko ezineepropathi ezicothayo zokukhupha amanzi. ”
Itheyibhile 1 ibonisa indlela, kumvelisi wezinto zokugquma izinto eziluhlaza, ukuphuculwa kweempawu ezithile zokugquma kunye neempawu ezibonakalayo ezikhokelela ekusebenzeni okunokuthi kuphunyezwe ngumsebenzisi wokugqibela.
ULUHLU 1 | Iimpawu kunye neenzuzo.
Ngokuyila iiPUD ezinyangekayo ze-UV ezineempawu ezithile njengoko zidweliswe kwiThebhile 1, abavelisi bokusetyenziswa kokuphela baya kuba nakho ukujongana neemfuno abanazo ekuphuculeni ukusebenza kwezityalo. Oku kuya kubavumela ukuba bakhuphisane ngakumbi, kwaye banokuvumela ukuba bandise imveliso yangoku.
Iziphumo zoMfuniselo kunye neNgxoxo
Imbali ye-UV-Curable Polyurethane Dispersions
Kwiminyaka ye-1990, ukusetyenziswa kwezorhwebo kwe-anionic polyurethane dispersions equkethe amaqela e-acrylate aqhotyoshelwe kwi-polymer yaqala ukusetyenziswa kwizicelo zoshishino.1 Uninzi lwezi zicelo zazisezipakishweni, ii-inki, kunye neengubo zokhuni. Umzobo 1 ubonisa ulwakhiwo lwegeneric yePUD enyangekayo yi-UV, ebonisa indlela ezi zixhobo zokugquma eziluhlaza zenziwe.
UMZO 1 | I-Generic acrylate esebenzayo ye-polyurethane dispersion.3
Njengoko kubonisiwe kwi-Figure 1, i-UV-curable polyurethane dispersions (i-UV-curable PUDs), yenziwe ngamacandelo aqhelekileyo asetyenziselwa ukwenza i-polyurethane dispersions. I-aliphatic diisocyanates iphendulwa kunye neester eziqhelekileyo, ii-diols, amaqela e-hydrophilization, kunye ne-chain extenders ezisetyenziselwa ukwenza i-polyurethane dispersions.2 Umahluko kukongeza i-acrylate functional ester, i-epoxy, okanye i-ethers efakwe kwisinyathelo sangaphambili se-polymer ngelixa wenza ukusabalalisa. . Ukukhethwa kwezinto ezisetyenziswa njengeebhloko zokwakha, kunye noyilo lwepolymer kunye nokucubungula, lawula ukusebenza kwePUD kunye neempawu zokumisa. Olu khetho kwizinto eziphathekayo kunye nokucubungula luya kukhokelela kwii-PUD ezinyangekayo ze-UV ezinokuthi zibe yi-non-film forming, kunye nezo zenza ifilimu.3 Ifilimu yokwenza ifilimu, okanye iindidi zokomisa, zingumxholo weli nqaku.
Ukwenza ifilim, okanye ukomisa njengoko kubizwa njalo, kuya kuvelisa iifilimu ezidityanisiweyo ezomileyo ekuchukunyisweni ngaphambi kokunyangwa kwe-UV. Ngenxa yokuba abafaki-zicelo benqwenela ukucutha ukungcoliseka emoyeni kwengubo ngenxa yamalungu, kunye nesidingo sesantya kwinkqubo yabo yokuvelisa, ezi zihlala zomiswa kwii-oveni njengenxalenye yenkqubo eqhubekayo phambi kokunyangwa kwe-UV. Umzobo we-2 ubonisa inkqubo eqhelekileyo yokomisa kunye nokunyanga kwePUD enyangekayo ye-UV.
UMZO 2 | Inkqubo yokunyanga iPUD enyangekayo kwi-UV.
Indlela yokufaka esetyenziswayo idla ngokutshizwa. Nangona kunjalo, imela phezu komqulu kunye nengubo yesikhukula sele isetyenzisiwe. Xa sele isetyenzisiwe, i-coating iya kudla ngokuhamba ngenkqubo yamanyathelo amane ngaphambi kokuba iphathwe kwakhona.
I-1.Flash: Oku kunokwenziwa kwigumbi okanye kumaqondo obushushu anyusiweyo kangangemizuzwana ukuya kwimizuzu embalwa.
2.I-oven eyomileyo: Apha kulapho amanzi kunye ne-co-solvents zikhutshelwa ngaphandle kwengubo. Eli nyathelo libaluleke kakhulu kwaye lidla ngokudla ixesha elininzi kwinkqubo. Eli nyathelo lidla ngokuba kwi>140 °F kwaye lihlala ukuya kutsho kwimizuzu esi-8. Ii-oveni ezomiswe ngezowuni ezininzi nazo zinokusetyenziswa.
- Isibane se-IR kunye nokuhamba komoya: Ukufakwa kwezibane ze-IR kunye neefeni zokuhamba komoya ziya kukhawulezisa ukukhanya kwamanzi ngokukhawuleza.
3.Unyango lweUV.
I-4.Cool: Emva kokuba uphilisiwe, i-coating iya kufuna ukunyanga ixesha elithile ukufezekisa ukuchasana kokuthintela. Eli nyathelo lingathatha ixesha elide njengemizuzu eyi-10 ngaphambi kokuba uthintelo lokumelana luphunyezwe
Uvavanyo
Olu pho nonongo luthelekisa ii-PUD ezimbini ezinyangekayo ze-UV (i-WB UV), ezisetyenziswa ngoku kwikhabhinethi kunye nemarike yokujoyina, kuphuhliso lwethu olutsha, iPUD # 65215A. Kule sifundo sithelekisa i-Standard #1 kunye ne-Standard #2 ukuya kwi-PUD #65215A ekomisweni, ukuvimbela, kunye nokuchasana kweekhemikhali. Sikwavavanya uzinzo lwe-pH kunye nokuzinza kwe-viscosity, enokuthi ibaluleke kakhulu xa siqwalasela ukusetyenziswa kwakhona kwe-overspray kunye nobomi beshelufu. Okuboniswe ngezantsi kwiThebhile 2 ziimpawu ezibonakalayo zereyini nganye esetyenziswe kolu phononongo. Zontathu iinkqubo zenzelwe kwinqanaba elifanayo le-photoinitiator, ii-VOCs, kunye nenqanaba eliqinileyo. Zontathu iireyini zenziwe nge-3% co-solvent.
ULUHLU 2 | Iimpawu ze-PUD resin.
Saxelelwa kudliwano-ndlebe lwethu ukuba uninzi lweengubo ze-WB-UV kwindawo yokujoyina kunye neemarike zekhabhinethi zomile kumgca wemveliso, othatha phakathi kwemizuzu emi-5-8 ngaphambi kokunyanga kwe-UV. Ngokwahlukileyo, umgca we-solvent-based UV (SB-UV) uyomisa ngemizuzu emi-3-5. Ukongeza, kule marike, iingubo zisetyenziswa ngokuqhelekileyo kwi-4-5 mils emanzi. I-drawback enkulu yamanzi e-UV-curable coatings xa kuthelekiswa ne-UV-curable-curable-based-solvent-based based alternatives lixesha elithatha ukukhanyisa amanzi kumgca wokuvelisa.4 Iziphene zefilimu ezifana nebala elimhlophe ziya kwenzeka ukuba amanzi awazange akhanyise ngokufanelekileyo ukuhlamba ngaphambi kokunyanga kwe-UV. Oku kunokwenzeka kwakhona ukuba ubukhulu befilimu emanzi buphezulu kakhulu. La mabala amhlophe adalwe xa amanzi ebanjiswa ngaphakathi kwifilimu ngexesha lokunyanga kwe-UV.5
Kolu phononongo sikhethe ishedyuli yokunyanga efana naleyo iya kusetyenziswa kumgca osekwe kwi-solvent enyangekayo ye-UV. Umzobo 3 ubonisa ukusetyenziswa kwethu, ukomisa, ukunyanga, kunye neshedyuli yokupakisha esetyenziselwa isifundo sethu. Le shedyuli yokomisa imele phakathi kwe-50% ukuya kwi-60% yokuphucula kwisantya somgca ngokubanzi ngaphezu komgangatho wangoku wemarike kwizicelo zokujoyina kunye nekhabhinethi.
UMZO 3 | Ukusetyenziswa, ukomisa, ukunyanga, kunye neshedyuli yokupakisha.
Ngezantsi sisicelo kunye neemeko zokunyanga esizisebenzise kuphononongo lwethu:
●Fafaza kwimaple veneer ngebasecoat emnyama.
● I-30-yesibini i-flash yeqondo lokushisa kwegumbi.
●140 °F i-oven yokomisa imizuzu eyi-2.5 (i-oven yokuhambisa).
● Unyango lwe-UV - ukuqina malunga ne-800 mJ / cm2.
- Iingubo ezicacileyo zanyangwa kusetyenziswa isibane seHg.
- Iingubo ezinemibala zaphiliswa ngokusebenzisa isibane se-Hg / Ga esidibeneyo.
● 1-umzuzu wokupholisa phambi kokupakishwa.
Kuphononongo lwethu siphinde satshiza ubungqingqwa befilimu emanzi ezintathu ezahlukeneyo ukubona ukuba ezinye iingenelo ezifana needyasi ezimbalwa ziyakufezekiswa na. I-4 mils emanzi iqhelekile kwi-WB UV. Kolu phononongo sikwaquke i-6 kunye ne-8 mils ye-wet coating applications.
Ukunyanga Iziphumo
I-Standard #1, i-gloss high-gloss clearcoat, iziphumo ziboniswa kwi-Figure 4. I-WB UV ye-UV ecacileyo isetyenziswe kwi-fiberboard ye-medium-dense (MDF) ngaphambili ifakwe i-basecoat emnyama kwaye iphiliswe ngokweshedyuli eboniswe kwi-Figure 3. Kwi-4 mils emanzi i-coating passes. Nangona kunjalo, kwi-6 kunye ne-8 mils isicelo esimanzi i-coating yaqhekeka, kwaye i-8 mils yasuswa ngokulula ngenxa yokukhutshwa kwamanzi okungahambi kakuhle ngaphambi kokunyanga kwe-UV.
UMZO 4 | Umgangatho #1.
Isiphumo esifanayo sikwabonwa kuMgangatho #2, oboniswe kuMfanekiso 5.
UMZO 5 | Umgangatho #2.
Kuboniswe kuMzobo 6, usebenzisa ishedyuli efanayo yokunyanga njengoko kuMzobo 3, iPUD #65215A ibonise ukuphucuka okukhulu ekukhutshweni kwamanzi / ukomisa. Kwi-8 mils emanzi ubukhulu befilimu, ukuqhekeka okuncinci kwabonwa kumda ophantsi wesampulu.
UMZO 6 | PUD #65215A.
Uvavanyo olongezelelweyo lwe-PUD# 65215A kwi-low-gloss clearcoating kunye ne-pigmented coating phezu kwe-MDF efanayo kunye ne-basecoat emnyama yavavanywa ukuvavanya iimpawu zokukhutshwa kwamanzi kwezinye iifom ze-coating eziqhelekileyo. Njengoko kuboniswe kwi-Figure 7, ukuqulunqwa kwe-gloss ephantsi kwi-5 kunye ne-7 mils isicelo esimanzi sakhupha amanzi kwaye senze ifilimu enhle. Nangona kunjalo, kwi-10 mils emanzi, yayinzima kakhulu ukukhulula amanzi phantsi kweshedyuli yokomisa kunye nokunyanga kuMfanekiso 3.
UMZO 7 | I-PUD ecwebezelayo ephantsi #65215A.
Kwifomula ye-pigmented emhlophe, i-PUD # 65215A yenza kakuhle kwishedyuli efanayo yokomisa kunye nokunyanga echazwe kuMfanekiso 3, ngaphandle kokuba isetyenziswe kwi-8 emanzi. Njengoko kuboniswe kwi-Figure 8, ifilimu iqhekeza kwi-8 mils ngenxa yokukhutshwa kwamanzi okungahambi kakuhle. Ngokubanzi ekucacileyo, i-gloss-low-gloss, kunye ne-pigmented formulations, i-PUD # 65215A isebenze kakuhle kwiifom zefilimu kunye nokomisa xa isetyenziswe ukuya kwi-7 mils emanzi kwaye iphiliswe kwishedyuli yokumisa ngokukhawuleza kunye nokunyanga echazwe kuMfanekiso 3.
UMZO 8 | I-PUD enemibala #65215A.
Ukuvala Iziphumo
Ukuthintela ukuchasana kukukwazi ukunamathela kwelinye inqaku eligqunyiweyo xa lipakishwe. Ekuveliseni oku kudla ngokuba ngumqobo ukuba kuthatha ixesha ukuba i-coat enyangisiweyo ifezekise ukuxhathisa ibhloko. Kolu phononongo, iifomyula ze-pigmented ze-Standard #1 kunye ne-PUD #65215A zisetyenziswe kwiglasi kwi-5 ye-mils emanzi usebenzisa i-drawdown bar. Ezi zanyangwa nganye ngokweshedyuli yokunyanga kuMzobo 3. Iipaneli ezimbini zeglasi ezigqunyiweyo zaphiliswa ngexesha elinye - imizuzu emi-4 emva kokunyanga iipaneli zadityaniswa kunye, njengoko kubonisiwe kuMfanekiso 9. Bahlala bebambene kwiqondo lobushushu legumbi iiyure ezingama-24. . Ukuba iipaneli zahlulwa ngokulula ngaphandle kokuprintwa okanye umonakalo kwiipaneli ezigqunyiweyo ngoko uvavanyo lwaluthathwa njengepasi.
Umzobo we-10 ubonisa ukuphuculwa kokuthintela ukuchasana kwePUD # 65215A. Nangona zombini i-Standard #1 kunye ne-PUD #65215A iphumelele unyango olupheleleyo kuvavanyo lwangaphambili, kuphela i-PUD #65215A ibonise ukukhutshwa kwamanzi okwaneleyo kunye nokunyanga ukufezekisa ukuchasana kokuthintela.
UMZO 9 | Ukuvala umzobo wovavanyo lokumelana.
UMZO 10 | Ukuthintela ukuchasana koMgangatho #1, kulandelwa yiPUD #65215A.
Iziphumo zokudibanisa i-Acrylic
Abavelisi bezogquma badla ngokudibanisa i-WB UV-curable resins kunye ne-acrylics ukuthoba ixabiso. Kwisifundo sethu siphinde sajonga ukudibanisa i-PUD # 65215A kunye ne-NeoCryl® XK-12, i-acrylic esekelwe emanzini, ehlala isetyenziswa njengeqabane elidibanisayo le-UV-enyangekayo ye-PUD esekelwe emanzini kwi-joinery kunye ne-cabinetry market. Kule marike, uvavanyo lwebala lwe-KCMA luthathwa njengomgangatho. Ngokuxhomekeke kwisicelo sokugqibela sokusetyenziswa, ezinye iikhemikhali ziya kuba zibaluleke ngakumbi kunezinye kumenzi wenqaku eligqunyiweyo. Ukulinganisa kwe-5 yeyona nto ingcono kwaye i-1 intle kakhulu.
Njengoko kubonisiwe kwiThebhile 3, iPUD #65215A iqhuba kakuhle kakhulu kuvavanyo lwebala le-KCMA njengeglosi ephezulu ecacileyo, icwecwe elisezantsi, kwaye njengengubo enemibala. Naxa ixutywe 1:1 nge-acrylic, uvavanyo lwebala le-KCMA aluchaphazeleki kakhulu. Nkqu ekungcolisweni ngama-agent afana ne-mustard, i-coating ibuyele kwinqanaba elamkelekileyo emva kweeyure ezingama-24.
ULUHLU 3 | Ukuchaswa kweekhemikhali kunye nebala (ukulinganiswa kwe-5 kungcono kakhulu).
Ukongeza kuvavanyo lwebala le-KCMA, abavelisi baya kuvavanya unyango kwangoko emva kokunyanga kwe-UV emgceni. Ngokuqhelekileyo iziphumo zokuxuba i-acrylic ziya kuqatshelwa ngokukhawuleza kumgca wokunyanga kolu vavanyo. Ulindelo kukuba ungabi nayo impumelelo yokwaleka emva kwe-20 isopropyl alcohol rubs kabini (20 IPA dr). Iisampulu zivavanywa kumzuzu omnye emva kokunyangwa kwe-UV. Kuvavanyo lwethu sabona ukuba umxube we-1: 1 wePUD # 65215A kunye ne-acrylic ayizange iphumelele olu vavanyo. Nangona kunjalo, siye sabona ukuba i-PUD #65215A inokudityaniswa ne-25% ye-NeoCryl XK-12 acrylic kwaye isaphumelela uvavanyo lwe-20 IPA dr (i-NeoCryl luphawu lwentengiso olubhalisiweyo lweqela le-Covestro).
UMZO 11 | 20 IPA kabini-rubs, 1 umzuzu emva kokunyanga UV.
Resin Uzinzo
Ukuzinza kwePUD #65215A kwavavanywa kwakhona. Ukuqulunqwa kuthathwa njengeshelufu ezinzileyo ukuba emva kweeveki ezi-4 kwi-40 ° C, i-pH ayihli phantsi kwe-7 kwaye i-viscosity ihlala izinzile xa ithelekiswa neyokuqala. Kuvavanyo lwethu siye sagqiba ekubeni sibeke iisampuli kwiimeko ezinzima ukuya kutsho kwiiveki ezi-6 kwi-50 °C. Kwezi meko uMgangatho #1 kunye ne#2 bezingazinzanga.
Kuvavanyo lwethu sijonge i-gloss high-gloss clear, low-gloss clear, kunye ne-low-gloss pigmented formulations esetyenziswe kolu phononongo. Njengoko kubonisiwe kwi-Figure 12, ukuzinza kwe-pH yazo zontathu iifomyula kwahlala kuzinzile kwaye ngaphezu kwe-7.0 pH threshold. Umzobo we-13 ubonisa utshintsho oluncinci lwe-viscosity emva kweeveki ze-6 kwi-50 °C.
UMZO 12 | ukuzinza kwe-pH yePUD eyenziweyo #65215A.
UMZO 13 | Ukuzinza kwe-Viscosity ye-PUD eyenziwe #65215A.
Olunye uvavanyo olubonisa ukusebenza kozinzo lwePUD #65215A yayikukuphinda kuvavanye ukuxhathisa kwebala le-KCMA lokwakheka kotyalo olusele lukhulile kangangeeveki ezi-6 kwi-50 °C, kwaye luthelekisa oko kuxhathiso lwebala le-KCMA lokuqala. Iingubo ezingabonakali kakuhle uzinzo ziya kubona amathontsi ekusebenzeni kwebala. Njengoko kuboniswe kwi-Figure 14, i-PUD # 65215A igcine inqanaba elifanayo lokusebenza njengoko lenzayo kuvavanyo lokuqala lwekhemikhali / ukuchasana kwebala le-pigmented coating eboniswe kwiThebhile 3.
UMZO 14 | Iiphaneli zovavanyo lwekhemikhali zePUD enemibala #65215A.
Izigqibo
Abafake izicelo ze-UV-curable water-based-coatings, i-PUD #65215A iya kubenza bakwazi ukuhlangabezana nemigangatho yokusebenza yangoku kwi-joinery, iimarike zemithi kunye nekhabhinethi, kwaye ukongeza, kuya kwenza ukuba inkqubo yokugqoka ibone ukuphuculwa kwesantya somgca ukuya ngaphezu kwe-50. -60% ngaphezulu kwemigangatho yangoku ye-UV-enyangekayo yokwaleka esekwe emanzini. Kumfaki-sicelo oku kusenokuthetha:
● Imveliso ekhawulezileyo;
● Ukunyuka kobunzima befilimu kunciphisa imfuno yeedyasi ezongezelelweyo;
● Imigca emifutshane yokomisa;
● Ukonga umbane ngenxa yokuncipha kweemfuno zokomisa;
● I-scrap encinci ngenxa yokumelana nokuthintela ngokukhawuleza;
● Ukwehliswa kwenkunkuma yokugquma ngenxa yozinzo lwentlaka.
Ngee-VOC ezingaphantsi kwe-100 g/L, abavelisi nabo bayakwazi ukuhlangabezana neethagethi zabo ze-VOC. Kubavelisi abanokuba namaxhala okwandisa ngenxa yemicimbi yemvume, iPUD yokukhupha amanzi ngokukhawuleza #65215A iya kubenza bakwazi ukuhlangabezana ngokulula nezibophelelo zabo ngaphandle kokuncama ukusebenza.
Ekuqaleni kweli nqaku sicaphule kudliwano-ndlebe lwethu ukuba abafakeli bezinto ezinyangekayo ze-UV ezisekwe kwi-solvent bayomisa kwaye banyange iingubo kwinkqubo ethatha phakathi kwemizuzu emi-3-5. Siye sabonisa kolu phononongo ukuba ngokwenkqubo eboniswe kuMfanekiso 3, iPUD #65215A iya kunyanga ukuya kuthi ga kwi-7 mils yobunzima befilimu emanzi kwimizuzu emi-4 kunye nobushushu be-oven ye-140 °C. Oku kungaphakathi kwefestile yeyona nto i-solvent-based-UV-curable coatings. I-PUD #65215A inokwenza ukuba abafakeli bangoku be-solvent-based UV-curable materials batshintshele kwi-water-based UV-curable material kunye notshintsho oluncinci kumgca wabo wokugquma.
Kubavelisi abajonga ukwandiswa kwemveliso, iingubo ezisekwe kwiPUD #65215A ziya kubenza bakwazi:
●Yonga imali ngokusebenzisa intambo emfutshane yokwaleka esekwe emanzini;
● Yiba nomgca wendlela yokwaleka omncinci kwindawo;
● Ukuba nefuthe elicuthiweyo kwimvume ye-VOC yangoku;
● Qonda ukonga amandla ngenxa yeemfuno ezincitshisiweyo zokomisa.
Ukuqukumbela, i-PUD #65215A iya kunceda ekuphuculeni ukusebenza kakuhle kwemigca yokugquma kwe-UV-enyangekayo ngokusebenza kwepropathi ephezulu kunye neempawu zokukhupha amanzi ngokukhawuleza kweresin xa yomisiwe kwi-140 ° C.
Ixesha lokuposa: Aug-14-2024
