I-Hose iyingxenye ebalulekile yokupakishwa kwamakhemikhali kwansuku zonke, esetshenziswa kabanzi emikhakheni yomkhiqizo njengokhilimu wesandla, imikhiqizo yokuhlanza, imikhiqizo yokuvikela ilanga nokunye. Izembozo ze-hose zendabuko ikakhulukazi ziyizingxube ezimbili ze-polyurethane ezincibilikisiwe. Nakuba izingxenye ezimbili ze-polyurethane ezinezingqimba zinokusebenza okuhle kakhulu mayelana nokuguquguquka kwe-coating kanye nokuphrinta kwesibili (i-bronzing), ukusebenza kwazo kuphezulu njengo-80%. Okuqukethwe kwama-VOC angenhla kuyenza ibe nomkhawulo ekusebenzeni, ikakhulukazi eminyakeni yamuva nje, ngokuqiniswa okuqhubekayo kokuqwashisa ngokuvikelwa kwemvelo kwezwe nezakhamuzi zezwe lethu, ukukhiqizwa nokusetshenziswa kwezingubo zokuqukethwe eziphezulu ze-VOC kungaphansi kokugadwa okuqinile. Kufinyelelwe esivumelwaneni sokuthi amapayipi anobungani bemvelo cesikhundleni sezingubo zokuqukethwe eziphezulu ze-VOC.
Njengamanje, izimbotshana ezaziwayo ezihambisana nemvelo zihlanganisa: 1. Izingubo ezisekelwe emanzini ezinokuqukethwe kwama-VOC okungaphansi kuka-10%; 2. Izingubo eziqinile eziqinile noma ngisho nezimbotshana eziqinile ezinokuqukethwe okuqinile okungaphezu kwama-85%. Njengoba i-hose base base material yamanje ngokuyinhloko i-polyethylene (PE) impahla, izici zokungezwani okuphansi kwendawo kanye ne-polarity ephansi yalolu hlobo lwezinto zenza izigqoko ezisekelwe emanzini zingabi nazo izethulo ezivuthiwe zohlelo lokusebenza embotsheni ye-hose. Izingubo eziqinile ezilapheka nge-UV (i-UV-curable coatings) seziphenduke into yokuqala yokukhetha amapayipi ahambisana nemvelo wamapayipi kulesi sigaba ngenxa yokusebenza kahle kwawo okuphezulu, ukonga amandla, nokuvikelwa kwemvelo. Kodwa-ke, ngenxa yezimpawu zezingubo ezilaphekayo ze-UV, lapho abantu besebenzisa i-UV-curable coatings ukukhiqiza izinto zokupakisha zansuku zonke zamakhemikhali, ngokuvamile bazobhekana nezinkinga ezinjengokumelana nokuguga okungekuhle kwengubo, ukuphuzi kalula, ukuqhekeka ukugqoka, i-matte Ukumelana nokugqoka okungalungile, ukuphrinta kwesibili okunzima (i-bronzing), iphunga elingenabungane ngemva kokudweba, njll.
Lesi sihloko sizoqala kusukela ezimisweni eziyisisekelo zezingubo zokuphulukisa ze-UV, kuhlanganiswe nesicelo sangempela, futhi sixoxe ngokujulile ngezinkinga eziyinhloko ezibalulwe ngenhla ohlelweni lokumboza kanye nomhlobiso wesibili wezinto zokupakisha ze-hose ezisetshenziswa kumakhemikhali wansuku zonke. Ngokwesisekelo sokuthuthukisa ifomula yokugqoka, ngokusho kwesimo sangempela sangempela somkhiqizi wempahla yokupakisha unikeza izixazululo eziqondile zalezi zinkinga.
Isingeniso se-UV Curing Coatings
I-Photocuring iwubuchwepheshe obusha “obuluhlaza” obukhula ngokushesha. Kusukela ngeminyaka yawo-1970s, ubuchwepheshe bokuthwebula izithombe buye basetshenziswa kakhulu kuma-coatings, oyinki, ama-crosslinking agents kanye nezinkundla zezokwelapha. Phakathi kwazo, ubuchwepheshe bokuphulukisa ukukhanya kwe-ultraviolet (UV curing) okwamanje buwubuchwepheshe obusetshenziswa kakhulu bokuphulukisa ukukhanya. Izembatho ze-UV zakhiwa ikakhulukazi ama-photoinitiators, ama-resin angasetshenzisiwe kanye nama-monomers, izithasiselo zokulawula indawo ephezulu kanye ne-pigment edingekayo kanye nezigcwalisi. Emkhakheni wokuhlobisa ubuso bezinto zokupakisha zamakhemikhali zansuku zonke, ubuchwepheshe bokwelapha be-UV busetshenziswa kabanzi ekufutheni, ukuphrinta nakweminye imikhakha. Ekufakweni kwezinto zokupakisha zepayipi lamakhemikhali lansuku zonke, izimbotshana ezilapheka yi-UV zibonakala ngokuphulukiswa ngokushesha, isicwebezelisi esiphezulu, ukumelana nokuklwebheka okuhle kakhulu, nokuqukethwe okuqinile okuphezulu. Njengoba abasafufusa imvelo-friendly enamathela impahla, eminyakeni yamuva abantu abaningi ngokwengeziwe ukunaka.
Kodwa-ke, njenganoma iyiphi enye impahla, ukunamathela kwe-UV nakho kunezinkinga ezinjengokuphuzi, ukuqhekeka, nokumelana nokugqoka okungekuhle ngesikhathi sokusetshenziswa. Lesi sihloko sizogxila ekuxoxeni ngezinkinga ezihlukahlukene ezivamile zezingubo ze-UV ezisetshenziswa kumapayipi. , kusukela kuzimbangela zezinkinga, beka phambili izindlela zokuxazulula lezi zinkinga kusukela ekwakhiweni kwefomula yokumboza kuya enkambisweni yokwakha yokumboza.
Izinkinga eziyinhloko nezisombululo lapho i-UV yokwelapha isetshenziselwa izinto zokupakisha zansuku zonke zamakhemikhali
一. Izimbangela kanye nezixazululo of yellowing
Isizathu esiyinhloko sokuphuzi kwezingubo ezilashwe yi-UV ukuthi ukunamathela kuqukethe izakhiwo zamangqamuzana ezikwazi ukumunca ukukhanya kwe-ultraviolet kobude obuthile beza. Ngemva kokumunca ukukhanya kwe-ultraviolet kobude obuthile begagasi, lezi zinto zikhiqiza ukuguquguquka kwezinga lamandla futhi ekugcineni zibangele i-oxidation ye-coating. Uma izinga le-oxidation lingekho phezulu, lizoba phuzi ngokubukeka, okuvame ukubizwa ngokuthi "ophuzi".
(Isithombe esingakwesokunxele – isenzakalo esiphuzi, isithombe esingakwesokudla – esivamile)
Izingxenye eziyinhloko ezimbotsheni ze-UV ezingabamba ukukhanya kwe-ultraviolet yilezi:
1. Izinsalela ze-Photoinitiator (lokhu into ebaluleke kakhulu ebangela ukuphuzi)
2. Isakhiwo samangqamuzana aqukethe umsebenzi we-UV (le ngxenye ye-UV enamathela ngokuyinhloko iyinto equkethe isakhiwo seringi ye-benzene ku-UV resin noma i-monomer)
3. Izinsalela zamabhondi angagcwalisiwe, nezinye izinto ezifakwa kalula yi-oxidizable (njengamaqembu e-amino, njll.)
二、 Izimbangela nezixazululo zokuqhekeka kwe-coating
Izizathu eziyinhloko zokugoba nokuqhekeka kokugqoka: 1. Ukunamathela kokugqoka ku-substrate akukuhle; 2. I-elongation ngesikhathi sokuphumula kwe-coating iphansi ngemva kokuphulukiswa. Isisho esidumile sithi ukuqina kwe-coating akukuhle.
Izixazululo ze-coating cracking:
1. Kusukela ekwakhiweni kwefomula, hlinzeka ngezingubo ezinamathelayo neziqinile;
2. Kusukela ekulawuleni inqubo yokumboza, izindlela eziqondile yilezi: 1. Ukwelashwa kwangaphambili kwe-substrate, njenge-flame, i-corona kanye nezinye izindlela zokwelapha ku-substrate noma ukwelashwa kwangaphambili kwe-ejenti yokwelapha yangaphambili, ukwandisa i-polarity ebusweni. we-substrate futhi uthuthukise ikhwalithi ye-substrate. 2. Ngesikhathi senqubo yokumboza, ubukhulu bokugqoka kufanele buncishiswe ngokufanelekile, futhi izinga lokushisa lokuphulukisa kanye namandla okuphulukisa kwe-UV kufanele kwandiswe.
三、 Izimbangela nezixazululo zephunga elingenabungane
I-hose eboshiwe izohogela iphunga elimnandi lapho umkhiqizo ubekwa, ikakhulukazi uma umkhiqizo uvalwe esikhwameni sokupakisha isikhathi eside, lapho isikhwama sokupakisha sivulwa. Isizathu esiyinhloko salawa maphunga ahlabayo ukuthi izinhlanganisela zamangqamuzana amancane abilayo asele kufilimu kapende zifuduka ziye endaweni enamathelayo ngokuhamba kwesikhathi, zinyakaze emoyeni, futhi zinqwabelana ngokuqhubekayo endaweni evaliwe. Imithombo yalezi zinhlanganisela zamangqamuzana amancane abilisa kancane izincibilikisi eziyinsalela (izincibilikisi ezingaguquguquki ngokuphelele), ama-monomer amancane asele (ukwelapha okungaphelele), kanye nezinhlanganisela zamangqamuzana amancane akhiqizwa ama-photoinitiators kanye nokuqhekeka kwawo (okuvame ukwaziwa ngokuthi izinsalela zokuqalisa). ).
Izindlela zokuqeda iphunga ngemuva kokwelapha:
1. Kusukela ekwakhiweni kokwakhiwa, sebenzisa isistimu yokuqalisa esebenza kakhulu ukuze unciphise inani lesiqalisi esisetshenzisiwe; ukwandisa okuqukethwe kwezingxenye ezisebenzayo ohlelweni, futhi usebenzise izingxenye ezifanele ze-plasticizing ukuze unciphise inani lama-molecule amancane, ikakhulukazi ama-molecule amancane asebenzayo. Ukusetshenziswa kwe-Monomer.
2. Ngokombono wokulawulwa kwenqubo yokumboza, ukunciphisa ngokufanelekile ukushuba kokumboza, ukwandisa izinga lokushisa lokuphulukisa, namandla okwelapha e-UV kunganciphisa ukukhiqizwa kwephunga elingenabungane.
四. Izizathu nezixazululo zokumelana nokuklwebheka okungekuhle kwe-matte hose
Isizathu sokumelana okungekuhle kokuklwebheka kwengubo ye-matte ukuthi umphumela we-matte we-coating ukhiqizwa ngokuyinhloko ukubonakaliswa okusabalele kwendawo yokwemboza ekukhanyeni, futhi ukubonakaliswa okusabalalisayo kwendawo yokumboza kubangelwa ikakhulukazi ubulukhuni i-coating surface kanye ne-coating surface. Ukungahambisani kwengqimba ngokwayo kuvela. Lapho indawo eqinile ikhuhliwe, izoletha ukungqubuzana okukhulu, okwenza ukuba ukunamathela kuthambekele kakhulu ekuklwebheni kunendawo ecwebezelayo ephezulu. Ngaphezu kwalokho, izinto ze-powder ekugqokeni kwe-matte zizobhubhisa ubuqotho bendawo yokugqoka ngezinga elithile, okungenye yezizathu zokuthi kungani ukugqoka kwe-matte kungenzeka kakhulu ukuklwebheka kunokugqoka okucwebezelayo.
(Ishubhu le-matte kulula ukulinwaya futhi libe mhlophe uma lihlikihlwa)
Izixazululo zokuklwebheka:
1. Kusukela ekwakhiweni kokusabalalisa, ukusebenzisa ingxenye ye-matte resin ukuze kuthathelwe indawo izingxenye zempushana kupende kunganciphisa ukugoqa kwendawo enamathelayo futhi kwandise isilinganiso se-pigment-base sokumbozwa ngaphansi kwesisekelo sokuqinisekisa izinga le-matte enamathela, futhi ekugcineni uzuze Ithuthukisa ukumelana nokuklwebheka kwezindawo eziboshwe ngama-matt.
2. Kusukela ekulawuleni inqubo yokumboza, ukunciphisa ngokufanelekile ukujiya kokumboza, ukwandisa izinga lokushisa lokuphulukisa, namandla okuphulukisa ama-UV kungathuthukisa ukumelana nokuklwebheka kwendawo enamathelayo ye-matte.
五. Izizathu nezisombululo zokungasebenzi kahle kwesitembu esishisayo
Izizathu eziyinhloko zokungasebenzi kahle kwesitembu esishisayo yilezi: 1. I-coating ayifani nephepha elishisayo lokugxiviza, okuholela ekugxilweni okungaphelele okushisayo noma ukunamathela okubi; Okwesibili, ukulawulwa kwenqubo ngesikhathi sokunyathela okushisayo akuzinzile.
Izixazululo zesitembu esingalungile esishisayo:
1. Ngokombono wokwakhiwa, i-Weixi Chemical ingenisa ngobuchule izinto ezinezimo ezizwela ukushisa ekwakhekeni. Izinto ezinjalo zinobulukhuni obuphezulu kanye nokucindezeleka okuphansi kwendawo emazingeni okushisa asekamereni, kodwa lapho izinga lokushisa lifinyelela noma lidlula izinga lokushisa lokuguquka kwesigaba, Lolu hlobo lwezinto luba nenguquko yesigaba ngokuncipha okubukhali kobulukhuni okuhambisana nokwanda kokuqina kwendawo. Ngesikhathi senqubo yokugxiviza okushisayo, njengoba izinga lokushisa lengxenye eshisayo yokunyathela likhuphuka ngokushesha ngaphezu kwezinga lokushisa lokushintsha kwesigaba sento, ubulukhuni bengxenye yesitembu esishisayo buyancishiswa kakhulu futhi ukungezwani kwendawo kuyanda, ngaleyo ndlela kuthuthukisa ukunamathela phakathi kwesitembu esishisayo. iphepha kanye ne-coating kanye nobuqotho be-hot stamping. Lapho inqubo ye-bronzing isiqediwe, izinga lokushisa liyehla ngaphansi kwezinga lokushisa lokushintsha kwesigaba futhi ubulukhuni be-coating buyalulama.
2. Ngokombono wokulawulwa kwenqubo, nikeza kuqala ukukhetha iphepha le-bronzing kanye nenqubo ehambisana nokugqoka, futhi ukwandise ngokufanele izinga lokushisa le-bronzing namandla okucindezela ngesikhathi se-bronzing, okulungele ukuthuthukisa ubuqotho nokunamathela kwe-bronzing.
I-varnish ye-UV-type PE hose izothatha indawo kancane kancane i-polyurethane enezingxenye ezimbili. Iwumkhiqizo kazwelonke wokuphepha, ukukhiqizwa okuhlanzekile, ukunciphisa ukukhishwa kwekhabhoni, kanye nezidingo zokuvikela imvelo. Ezinye izinkinga eziphakama ngesikhathi sokwakhiwa kwe-varnish ye-UV zingaxazululwa nge-varnish. Ukulungiswa kwefomula yomkhiqizi, ukulungiswa kwenqubo yomkhiqizi wezisetshenziswa kanye nemboni yepayipi kuxazululwa ngokuhlanganyela.
I-Shanghai rainbow Industrial Co., Ltdinikeza isisombululo esisodwa sokupakisha izimonyo.Uma uthanda imikhiqizo yethu, ungaxhumana 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，光固化技术已广泛应应古医疗等领域。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、表面控制助剂以及。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、者光光泽高、者固化。量高的特点，做為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、哑光老光老光老光老光老光。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.
Isikhathi sokuthumela: Jan-06-2023