I-Hose yinxalenye ebalulekileyo yokupakishwa kwemichiza yemihla ngemihla, isetyenziswe ngokubanzi kwiinkalo zemveliso ezifana nekhilimu yesandla, iimveliso zokucoca, iimveliso zelanga kunye nokunye. Iingubo zombhobho zemveli zendalo ziyi-solvent-based based polyurethane coatings. Nangona iingubo ezimbini ze-polyurethane zinomsebenzi ogqwesileyo malunga nokuguquguquka kwengubo kunye nokushicilela okwesibini (i-bronzing), ukusebenza kwabo kuphezulu njenge-80%. Lo mxholo we-VOCs ungasentla uwenza uthintelwe ekusebenzeni, ngakumbi kwiminyaka yakutshanje, ngokuqiniswa okuqhubekayo kolwazi lokhuseleko lokusingqongileyo lwelizwe kunye nabemi belizwe lethu, ukuveliswa kunye nokusetyenziswa komxholo we-VOCs ophezulu wokugquma kuphantsi kolawulo olungqongqo. Kuye kwafikelela kwimvumelwano yokuba imibhobho yokwaleka ehambelana nokusingqongileyo cindawo yokugquma umxholo ophezulu weVOCs.
Okwangoku, iingubo ezivunyiweyo zokusingqongileyo zibandakanya: 1. Iingubo ezisekelwe emanzini ezinomxholo we-VOCs ongaphantsi kwe-10%; 2. Iingubo eziphakamileyo eziphezulu okanye kunye neengubo eziqinileyo ezinomxholo oqinileyo ongaphezulu kwama-85%. Ekubeni isiseko se-hose sangoku sisisiseko se-polyethylene (PE) izinto eziphathekayo, iimpawu zoxinzelelo oluphantsi komhlaba kunye ne-polarity ephantsi yolu hlobo lwezinto zenza iingubo ezisekelwe emanzini azikho imizekelo yesicelo esivuthiweyo kwi-hose coating. Umgangatho ophezulu we-UV-curable coatings (i-UV-curable coatings) ibe yinto yokuqala yokukhetha ukugquma kweendawo zokusingqongileyo zemibhobho kweli nqanaba ngenxa yokusebenza kwayo okuphezulu, ukonga amandla, kunye nokukhuselwa kwendalo. Nangona kunjalo, ngenxa yeempawu zokugquma kwe-UV-enyangekayo, xa abantu besebenzisa iingubo ezinyangekayo ze-UV ukuvelisa izixhobo zokupakisha zemichiza yemihla ngemihla, ngokubanzi baya kudibana neengxaki ezifana nokunganyangeki kokukhanya okuguga kwengubo, ukutyheli lula, ukuqhekeka kwesikhumba. i-coating, i-matte Ukuxhatshazwa kokugqoka kakubi, ukuprintwa kwesibini esinzima (i-bronzing), iphunga elingenabubele emva kokupenda, njl.
Eli nqaku liza kuqala kwimigaqo esisiseko ye-UV yokunyanga i-UV, idibaniswe nesicelo sokwenene, kwaye uxoxe ngokunzulu ngeengxaki eziphambili ezikhankanywe ngasentla kwinkqubo yokugquma kunye nokuhombisa okwesibini kwezinto zokupakisha ze-hose ezisetyenziswa kwiikhemikhali zemihla ngemihla. Ngesiseko sokuphucula ifomyula yokwambathisa, ngokutsho Imeko ethile yokwenyani yomenzi wezinto zokupakisha inika izisombululo ezithile kwezi ngxaki.
Intshayelelo kwiiNgqungquthela zokuNyangwa kweUV
Ifotocuring yitekhnoloji entsha “eluhlaza” ekhula ngokukhawuleza. Ukusukela ngeminyaka yee-1970s, itekhnoloji yokufota isetyenziswe ngokubanzi kwiingubo, ii-inki, ii-agent ezidibanisayo kunye nemimandla yezonyango. Phakathi kwazo, itekhnoloji yokunyanga ukukhanya kwe-ultraviolet (UV curing) ngoku yeyona isetyenziswa kakhulu itekhnoloji yokunyanga ukukhanya. Iingubo ze-UV zenziwa ikakhulu ngama-photoinitiators, i-resins e-unsaturated kunye ne-monomers, izongezo zokulawula umphezulu kunye nee-pigments eziyimfuneko kunye nezihluzi. Kwintsimi yokuhombisa umphezulu wezinto zokupakisha iikhemikhali zemihla ngemihla, itekhnoloji yokunyanga ye-UV isetyenziswa kakhulu ukutshiza, ukuprinta kunye namanye amasimi. Kwizinto zokupakisha zemibhobho yekhemikhali yemihla ngemihla, iingubo ezinyangekayo ze-UV ziphawulwa ngokuphiliswa ngokukhawuleza, isicwebezelisi somgangatho ophezulu, ukumelana nokukrweleka okugqwesileyo, kunye nomxholo oqinileyo oqinileyo. Njengezinto zokugquma ezisakhulayo zokusingqongileyo, kwiminyaka yakutshanje abantu abaninzi ngakumbi nangakumbi.
Nangona kunjalo, njengayo nayiphi na enye imathiriyeli, iingubo ezinyangekayo ze-UV nazo zineengxaki ezinje ngokuba tyheli, ukuqhekeka, kunye nokunganyangeki kokunxiba ngexesha lokusetyenziswa. Eli nqaku liza kugxila ekuxoxeni ngeengxaki ezahlukeneyo eziqhelekileyo zeengubo ze-UV ezisetyenziswa kwimibhobho. , ukuqala kwiimbangela zeengxaki, beka phambili iindlela zokusombulula ezi ngxaki ukusuka kuyilo lwefomula yokwaleka ukuya kwinkqubo yokwakha yokwaleka.
Iingxaki eziphambili kunye nezisombululo xa i-UV yokunyanga i-UV ifakwe kwizinto zokupakisha zemichiza yemihla ngemihla
一. Iimbangela kunye nezisombululo ze-yellowing
Esona sizathu siphambili se-yellowing ye-UV-curred coatings kukuba i-coating iqulethe izakhiwo ze-molecular ezinokufunxa ukukhanya kwe-ultraviolet yobude obuthile. Emva kokufunxa ukukhanya kwe-ultraviolet yobude obuthile, ezi zinto zivelisa utshintsho lwenqanaba lamandla kwaye ekugqibeleni zenze i-oxidation ye-coating. Xa iqondo le-oxidation lingekho phezulu, liya kujika liphuzi ngenkangeleko, eyaziwa ngokuba "yi-yellowing".
(Umfanekiso osekhohlo – into etyheli, umfanekiso wasekunene – oqhelekileyo)
Amacandelo aphambili kwiingubo ze-UV ezinokufunxa ukukhanya kwe-ultraviolet zezi:
1. Intsalela ye-Photoinitiator (le yeyona nto ibalulekileyo eyenza ukuba tyheli)
2. Ulwakhiwo lwemolekyuli equlethe umsebenzi we-UV (le ndawo yotyatyazo lwe-UV ubukhulu becala yinto equlathe ulwakhiwo lweringi ye-benzene kwiresin ye-UV okanye imonoma)
3. Iibhondi eziseleyo ezinganyangekanga ezinganyangekiyo, kunye nezinye izinto ezifumaneka ngokulula kwi-oxidizable (ezifana namaqela e-amino, njl.njl.)
二、Izizathu kunye nezisombululo zokuqhekeka kokutyabeka
Izizathu eziphambili zokugoba kunye nokuqhekeka kwengubo: 1. Ukunamathela kwengubo kwi-substrate ayilungile; 2. I-elongation ngexesha lekhefu lengubo liphantsi emva kokunyanga. Intetho edumileyo yeyokuba ukuqina kwengubo akulunganga.
Izisombululo zokuqhekeka kokutyabeka:
1. Ukuqala kuyilo lwefomula, ukubonelela ngeengubo ngokubambelela okungcono kunye nokuqina;
2. Ukusuka kulawulo lwenkqubo yokugquma, iindlela ezithile zezi: 1. Ukulungiswa kwangaphambili kwe-substrate, njengomlilo, i-corona kunye nolunye unyango kwi-substrate okanye unyango lwangaphambili lwe-agent yonyango lwangaphambili, ukunyusa i-polarity yomhlaba. kunye nokuphucula umgangatho we-substrate. 2. Ngexesha lenkqubo yokugquma, ubukhulu bokutya bufanele buncitshiswe ngokufanelekileyo, kwaye iqondo lokushisa lokunyanga kunye namandla okunyanga kwe-UV kufuneka kwandiswe.
三、 Oonobangela kunye nezisombululo zevumba elingenabuhlobo
I-hose edibeneyo iya kuvumba iphunga elimnandi xa imveliso ibekwe, ngakumbi ukuba umkhiqizo uvalwe kwisikhwama sokupakisha ixesha elide, xa isikhwama sokupakisha sivulwa. Esona sizathu siphambili sala mavumba ahlabayo kukuba iikhompawundi ezincinci zemolekyuli ezincinci ezibilisayo eziseleyo kwifilimu yepeyinti zifudukela kumphezulu wengubo ngokuhamba kwexesha, ziguquke emoyeni, kwaye ziqokelele ngokuqhubekayo kwindawo evaliweyo. Imithombo yezi khompawundi ezincinci zemolekyuli zibilisa kakhulu zizinyibilikisi ezishiyekileyo (izinyibilikisi ezingaguquguquki ngokupheleleyo), intsalela yemonomers encinci yemolekyuli (ukunyanga okungaphelelanga), kunye neekhompawundi ezincinci zemolekyuli eziveliswa ziifotonitiators kunye nokuqhekeka kwazo (ezaziwa ngokuba ziintsalela zokuqalisa). ).
Iindlela zokusombulula ivumba emva kokunyanga:
1. Ukuqala kuyilo lokuqulunqa, sebenzisa isixokelelwano sokuqalisa esisebenza kakhulu ukunciphisa ubungakanani bomqalisi osetyenzisiweyo; ukwandisa umxholo wamacandelo emisebenzi emininzi kwinkqubo, kwaye usebenzise amacandelo afanelekileyo eplastiki ukunciphisa inani le-monomers ye-molecule encinci, ngokukodwa i-monofunctional iimolekyuli ezincinci. Ukusetyenziswa kwe-monomer.
2. Ukusuka kwimbono yolawulo lwenkqubo yokugquma, ukunciphisa ngokufanelekileyo ubuninzi bokugquma, ukwandisa ubushushu bokunyanga, kunye ne-UV yokunyanga amandla kunokunciphisa isizukulwana samavumba angenabubele.
四. Izizathu kunye nezisombululo zokunganyangeki kakuhle kwe-matte hose
Isizathu sokunganyangeki kakuhle komkrwelo we-matte yokwaleka kukuba isiphumo se-matte sokugquma iveliswa ikakhulu kukubonakaliswa kwe-diffuse ye-coating surface ekukhanyeni, kwaye ukubonakaliswa kwe-diffuse ye-coating surface kubangelwa ubukhulu becala buburhabaxa. indawo yokwaleka kunye nomphezulu wokugquma. Ukungahambelani komgangatho ngokwawo kuvela. Xa indawo erhabaxa ikhuhlwa, iya kuzisa ukukhuhlana okukhulu, okubangela ukuba i-coating ithandeke ngakumbi kwimikrwelo kunomgangatho ophezulu weglosi. Ukongezelela, izinto ze-powder kwi-matte coating ziya kutshabalalisa ingqibelelo yendawo yokugubungela ukuya kwinqanaba elithile, esinye sezizathu zokuba kutheni i-matte i-matte inokuthi ihlanjululwe kunokuba i-glossy igubungele.
(Ityhubhu ye matte kulula ukuyikrwempa kwaye ijike ibemhlophe xa ikhuhliwe)
Izisombululo zemikrwelo:
1. Ukuqala kwi-design yokusabalalisa, ukusebenzisa inxalenye ye-matte resin ukubuyisela amacandelo e-powder kwipeyinti kunokunciphisa uburhabaxa bendawo yokugquma kunye nokwandisa umlinganiselo we-pigment-base ye-coating phantsi kwesiseko sokuqinisekisa iqondo le-matte ye-matte. ukutyabeka, kwaye ekugqibeleni kuphunyezwe Ukuphucula ukuxhathisa umkrwelo wemiphezulu egqunywe yi matt.
2. Ukuqala kulawulo lwenkqubo yokugquma, ukunciphisa ngokufanelekileyo ubuninzi bokugquma, ukwandisa ubushushu bokunyanga, kunye ne-UV yokunyanga amandla kunokuphucula ukuxhathisa ukukrazula kwendawo yokugqoka i-matte.
五. Izizathu kunye nezisombululo zokungasebenzi kakuhle kwesitampu esishushu
Izizathu eziphambili zokungasebenzi kakuhle kwesitampu esishushu: 1. I-coating ayihambelani nephepha elitshisayo le-stamping, okubangela ukuba kufakwe isitampu esishushu esingaphelelanga okanye ukubambelela kakubi; Okwesibini, ulawulo lwenkqubo ngexesha lokunyathela okushushu aluzinzile.
Izisombululo zesitampu esingalunganga esishushu:
1. Ngokombono wokuqulunqwa, i-Weixi Chemical ingenisa ngokuyilayo izinto ezineempawu ezingevayo kubushushu ekuyilweni. Izinto ezinjalo zinobulukhuni obuphezulu kunye noxinzelelo oluphantsi komhlaba kwiqondo lokushisa, kodwa xa ubushushu bufikelela okanye bugqithise ubushushu benguqu yesigaba, Olu hlobo lwezinto lufumana utshintsho lwesigaba kunye nokuncipha okubukhali kobulukhuni ehamba kunye nokwanda koxinzelelo lomphezulu. Ngexesha lenkqubo yokunyathela eshushu, ekubeni iqondo lobushushu lenxalenye yesitampu eshushu linyuka ngokukhawuleza ngaphezu kweqondo lokutshintsha kwesigaba sento, ukuqina kwenxalenye yesitampu eshushu kuncipha kakhulu kwaye ukunyanzeliswa komphezulu kuyanda, ngaloo ndlela kuphuculwe ukuncamathela phakathi kwesitampu esishushu. iphepha kunye nokwaleka kunye nokuthembeka kwesitampu esishushu. Xa inkqubo ye-bronzing igqityiwe, iqondo lokushisa lihla ngaphantsi kweqondo lokushisa lokutshintsha kwesigaba kunye nobunzima bokugquma bubuyiselwa.
2. Ukususela kumbono wokulawulwa kwenkqubo, nikela kuqala ekukhetheni iphepha le-bronzing kunye nenkqubo ehambelana nokugubungela, kwaye ngokufanelekileyo ukwandise ukushisa kwe-bronzing kunye nokunyanzeliswa kwamandla ngexesha le-bronzing, efanelekileyo ekuphuculeni ingqibelelo kunye nokubambelela kwi-bronzing.
Ivanishi yohlobo lwe-UV ye-UV iya kuthi ngokuthe ngcembe ithathe indawo yokwalekwa kwe-polyurethane enamacandelo amabini. Yimveliso yokhuseleko lwelizwe, imveliso ecocekileyo, ukunciphisa ukukhutshwa kwekhabhoni, kunye neemfuno zokukhusela indalo. Ezinye iingxaki ezivela ngexesha lokwakhiwa kwe-UV ivanishi zinokusombululwa nge-varnish. Uhlengahlengiso lwefomula yomenzi, uhlengahlengiso lwenkqubo yomenzi wezixhobo kunye nefektri yombhobho isonjululwe ngokudibeneyo.
Shanghai rainbow industrial co., Ltdinikeza isisombululo esisodwa sokupakisha izithambiso.Ukuba uthanda iimveliso zethu, ungaqhagamshelana nathi,
Iwebhusayithi:www.rainbow-pkg.com
Email: Bobby@rainbow-pkg.com
WhatsApp: +008615921375189
光固化是一种快速发展的“绿色”新技术，从20世纪70年代至今，光固化技术已广泛庂应于，亚平医疗等领域。其中紫外光固化（UV固化）技术是目前应用最为广泛的光固化技术。UV涂料主要由光引发剂、不饱和树脂及单体、表面控制助剂在木木。包装材料表面装饰领域，UV固化技术被广泛应用于喷涂，印刷等领域。在日化软管包装材料涂装中，UV固化涂料以其快速固化、表面光泽高、老光泽高、者光光泽高、老其光、老光。量高的特点，做为一种新兴的环境友好型涂装材料，近年來越來越引起人們的关注.
然而，同其他任何材料一樣，UV固化涂料在使用过程中也会存在诸如黄变、开裂、哑光老光而光而光而光而光而光而光而光光而光而化涂料。点就应用于软管的UV涂料常见的各种问题进行讨论，从问题产生的原因出发，提出从涂料配方设到涂料施工过程的解决這些问题的方法.
Ixesha lokuposa: Jan-06-2023