Hose ndi gawo lofunikira pakuyika kwamankhwala tsiku lililonse, yogwiritsidwa ntchito kwambiri m'minda ya mankhwala monga zonona zamanja, zoyeretsera, mankhwala oteteza dzuwa ndi zina zotero. Zovala zapaipi zachikhalidwe zimakhala zosungunulira zokhala ndi zigawo ziwiri za polyurethane. Ngakhale zokutira zamitundu iwiri za polyurethane zimakhala ndi ntchito yabwino kwambiri potengera kusinthasintha kwa zokutira komanso kusindikiza kwachiwiri (bronzing), magwiridwe antchito ake ndi okwera mpaka 80%. Zomwe zili pamwambapa za VOC zimapangitsa kuti zikhale zoletsedwa kugwiritsa ntchito, makamaka m'zaka zaposachedwa, ndikulimbikitsa mosalekeza kuzindikira zachitetezo cha chilengedwe cha dziko ndi nzika za dziko lathu, kupanga ndi kugwiritsa ntchito zokutira zokhala ndi ma VOC apamwamba kumayang'aniridwa mwamphamvu. Zafika pa mgwirizano kuti zokutira payipi zoteteza zachilengedwe cm'malo mwa zokutira zachikhalidwe zapamwamba za VOCs.
Pakali pano, zokutira zodziwika bwino zoteteza zachilengedwe ndi izi: 1. Zopaka zamadzi zomwe zili ndi VOCs zosakwana 10%; 2. Zovala zolimba kwambiri kapena ngakhale zokutira zolimba zomwe zimakhala zolimba kuposa 85%. Popeza panopa payipi m'munsi zakuthupi makamaka polyethylene (PE) zakuthupi, makhalidwe otsika kukangana padziko ndi otsika polarity a mtundu uwu wa zinthu kupanga zokutira madzi alibe okhwima ntchito zoyambira mu ❖ kuyanika payipi. Zotchingira zolimba kwambiri zochilitsidwa ndi UV (zopaka zochizira ndi UV) zakhala chisankho choyamba cha zokutira zoteteza zachilengedwe pamapaipi pakadali pano chifukwa chakuchita bwino kwambiri, kupulumutsa mphamvu, komanso kuteteza chilengedwe. Komabe, chifukwa cha mawonekedwe a zokutira zochiritsika ndi UV, anthu akamagwiritsa ntchito zokutira zochiritsika ndi UV popanga zida zopangira payipi za tsiku ndi tsiku, nthawi zambiri amakumana ndi zovuta monga kukana kukalamba kosasunthika kwa zokutira, chikasu chosavuta, kusweka kwa zokutira, matte Kusavala bwino, kusindikiza kwachiwiri kovuta (bronzing), fungo losasangalatsa pambuyo pojambula, ndi zina zambiri.
Nkhaniyi iyamba kuchokera ku mfundo zazikulu za zokutira zochiritsira za UV, kuphatikizidwa ndi kugwiritsa ntchito kwenikweni, ndikukambirana mozama zovuta zazikulu zomwe tazitchula pamwambapa pakuyala ndi kukongoletsa kwachiwiri kwa zida zopangira payipi zomwe zimagwiritsidwa ntchito pamankhwala atsiku ndi tsiku. Pamaziko a kukhathamiritsa chilinganizo ❖ kuyanika, molingana ndi Mkhalidwe weniweni wa ma CD opanga zinthu amapereka mayankho enieni ku mavutowa.
Chidziwitso cha zokutira za UV
Photocuring ndi teknoloji yatsopano "yobiriwira" yomwe ikukula mofulumira. Kuyambira m'ma 1970, luso lojambula zithunzi lakhala likugwiritsidwa ntchito kwambiri popaka, inki, ma crosslinking agents ndi madera azachipatala. Pakati pawo, ukadaulo wa ultraviolet curing (UV curing) ndiye ukadaulo wogwiritsidwa ntchito kwambiri wochiritsa kuwala. Zovala za UV zimapangidwa makamaka ndi ma photoinitiators, unsaturated resins ndi monomers, zowonjezera zowongolera pamwamba ndi ma pigment ofunikira ndi zodzaza. M'munda wa zokongoletsera zapadziko lonse lapansi zonyamula mankhwala tsiku lililonse, ukadaulo wakuchiritsa wa UV umagwiritsidwa ntchito kwambiri popopera mbewu mankhwalawa, kusindikiza ndi zina. Popaka zida zapaipi zamankhwala tsiku lililonse, zokutira zochizika ndi UV zimadziwika ndi kuchiritsa mwachangu, gloss yapamwamba, kukana kukanda bwino, komanso zolimba kwambiri. Monga akutulukira chilengedwe-wochezeka ❖ kuyanika zakuthupi, m'zaka zaposachedwapa anthu ambiri chidwi.
Komabe, monga zida zina zilizonse, zokutira zochizika ndi UV zimakhalanso ndi zovuta monga chikasu, kusweka, komanso kusamva bwino pakagwiritsidwe ntchito. Nkhaniyi ifotokozanso za zovuta zosiyanasiyana zomwe zimachitika pa zokutira za UV zomwe zimagwiritsidwa ntchito pamapaipi. , kuyambira pa zomwe zimayambitsa mavuto, perekani njira zothetsera mavutowa kuchokera ku ndondomeko yopangira zokutira kupita ku njira yopangira zokutira.
Mavuto akulu ndi mayankho pamene zokutira zochiritsira za UV zimagwiritsidwa ntchito pazinthu zamapaipi amankhwala tsiku lililonse
一. Zomwe zimayambitsa ndi njira zothetsera chikasu
Chifukwa chachikulu chopangira chikasu cha zokutira zotetezedwa ndi UV ndikuti zokutira zimakhala ndi mamolekyu omwe amatha kuyamwa kuwala kwa ultraviolet kwa utali wosiyanasiyana. Pambuyo poyamwa kuwala kwa ultraviolet kwa kutalika kwake, zinthuzi zimapanga kusintha kwa mphamvu ndipo pamapeto pake zimayambitsa makutidwe ndi okosijeni wa zokutira. Pamene mlingo wa okosijeni si wokwera, umasanduka wachikasu m'mawonekedwe, omwe amadziwika kuti "chikasu".
(Chithunzi chakumanzere - chodabwitsa chachikasu, chithunzi chakumanja - chabwinobwino)
Zigawo zazikulu za zokutira za UV zomwe zimatha kuyamwa kuwala kwa ultraviolet ndi:
1. Zotsalira za Photoinitiator (ichi ndiye chinthu chofunikira kwambiri chomwe chimayambitsa chikasu)
2. Kapangidwe ka mamolekyu okhala ndi zochita za UV (gawo ili la zokutira la UV ndi chinthu chomwe chimakhala ndi mphete ya benzene mu utomoni wa UV kapena monoma)
3. Zotsalira za unsaturated unsaturated zotsalira, ndi zinthu zina mosavuta oxidizable (monga magulu amino, etc.)
二、 Zomwe zimayambitsa ndi njira zothetsera kupaka utoto
Zifukwa zazikulu zopindika ndi kusweka kwa zokutira: 1. Kumamatira kwa zokutira ku gawo lapansi sikwabwino; 2. The elongation pa yopuma ❖ kuyanika ndi otsika pambuyo kuchiritsa. Mawu otchuka ndi akuti kulimba kwa zokutira sikwabwino.
Zitsanzo za kupasuka kwa coating:
1. Kuyambira pamapangidwe a fomula, perekani zokutira zomatira bwino komanso zolimba;
2. Kuchokera pakuyang'anira ndondomeko yophimba, njira zenizeni ndi izi: 1. Kukonzekera kwa gawo lapansi, monga moto, corona ndi mankhwala ena pa gawo lapansi kapena chithandizo chamankhwala chisanachitike, kuti awonjezere polarity. za gawo lapansi ndikuwongolera mtundu wa gawo lapansi. 2. Panthawi yopaka, makulidwe a zokutira ayenera kuchepetsedwa moyenerera, ndipo kutentha kwa machiritso ndi mphamvu yochiritsira ya UV iyenera kuwonjezeka.
三、 Zomwe zimayambitsa ndi njira zothetsera fungo losasangalatsa
Chophimba chophimbidwa chidzamva fungo lopweteka pamene mankhwalawa ayikidwa, makamaka ngati mankhwalawa asindikizidwa mu thumba lazopakapaka kwa nthawi yaitali, pamene thumba lazovala limatsegulidwa. Chifukwa chachikulu cha fungo loipali ndikuti tinthu tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tambiri tomwe timakhala mufilimu ya penti timeneti timakhala tikuyenda pamwamba pa zokutira pakapita nthawi, zimasunthika mumlengalenga, ndikuunjikana mosalekeza pamalo otsekedwa. Magwero a tinthu tating'ono tating'ono tating'ono tating'ono tating'ono tambiri timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa (zosungunulira zomwe sizimasungunuka kwathunthu), zotsalira zazing'ono zamamolekyulu (kuchiritsa kosakwanira), ndi tinthu tating'ono tating'ono timene timapangidwa ndi ma photoinitiators ndi kusweka kwawo (komwe kumadziwika kuti zotsalira zoyambira). ).
Njira zothetsera fungo pambuyo pochiritsa:
1. Kuyambira pakupanga mapangidwe, gwiritsani ntchito makina oyambitsa kwambiri kuti muchepetse kuchuluka kwa zoyambitsa zomwe zimagwiritsidwa ntchito; kuonjezera zili mu multifunctional zigawo zikuluzikulu mu dongosolo, ndi ntchito zigawo zoyenera plasticizing kuchepetsa kuchuluka kwa monomers yaing'ono molekyulu, makamaka monofunctional mamolekyulu ang'onoang'ono. Kugwiritsa ntchito monomer.
2. Kuchokera pamalingaliro a kuwongolera njira yopangira ❖ kuyanika, moyenerera kuchepetsa makulidwe a zokutira, kuonjezera kutentha kwa machiritso, ndi mphamvu yakuchiritsa ya UV kungachepetse kutulutsa fungo losasangalatsa.
四. Zifukwa ndi njira zothetsera kusamvana kwapaipi ya matte
Chifukwa chakukanira koyipa kwa zokutira kwa matte ndikuti mawonekedwe a matte a zokutira amapangidwa makamaka ndi mawonekedwe owoneka bwino a zokutira pakuwala, ndipo mawonekedwe owoneka bwino a zokutira amachokera makamaka chifukwa cha roughness ya zokutira pamwamba ndi zokutira pamwamba. Kusagwirizana kwa wosanjikiza palokha kumachitika. Pakaphwanyidwa pamwamba, zimabweretsa kukangana kwakukulu, zomwe zimapangitsa kuti zokutira zikhale zosavuta kukanda kuposa pamwamba pa gloss yapamwamba. Kuonjezera apo, zinthu za ufa muzovala za matte zidzawononga umphumphu wa chophimba pamwamba pamlingo wina, chomwe ndi chimodzi mwa zifukwa zomwe matte a matte amatha kugwedezeka kuposa chophimba chonyezimira.
(Chubu la matte ndi losavuta kukanda ndikusanduka loyera likamatikita)
Njira zothetsera zokala:
1. Kuyambira pamapangidwe ogawa, kugwiritsa ntchito gawo la utomoni wa matte m'malo mwa zigawo za ufa mu utoto kumatha kuchepetsa kuuma kwa kupaka pamwamba ndikuwonjezera chiŵerengero cha pigment-base cha zokutira pansi pa malo owonetsetsa kuti matte degree ya ❖ kuyanika, ndipo potsirizira pake tikwaniritse Kupititsa patsogolo kukana kwa malo okutidwa ndi matt.
2. Kuyambira pakuwongolera njira yokutira, moyenerera kuchepetsa makulidwe a zokutira, kuonjezera kutentha kwa machiritso, ndi mphamvu yochiritsa ya UV imatha kupititsa patsogolo kukana kwa matte.
五. Zifukwa ndi njira zothetsera kusachita bwino kwa masitampu otentha
Zifukwa zazikulu za kupondaponda kosakwanira kotentha ndi izi: 1. Chophimbacho sichikufanana ndi mapepala otentha opondapo, zomwe zimapangitsa kuti pakhale kupondaponda kosakwanira kapena kusamata bwino; Chachiwiri, kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake.
Njira zothetsera kusapondaponda kotentha:
1. Potengera kapangidwe kake, Weixi Chemical imayambitsa mwaluso zinthu zomwe sizimva kutentha mu kapangidwe kake. Zinthu zimenezi ndi mkulu kuuma ndi otsika padziko mavuto firiji, koma pamene kutentha kufika kapena kuposa gawo kusintha kutentha, mtundu wa zinthu akukumana ndi gawo kusintha ndi lakuthwa kuchepa kuuma limodzi ndi kuwonjezeka padziko mavuto. Panthawi yotentha yopondaponda, popeza kutentha kwa gawo lotentha lopondapo kumakwera mofulumira pamwamba pa kutentha kwa kutentha kwa chinthucho, kuuma kwa gawo lotentha lopondapo kumachepetsedwa kwambiri ndipo kugwedezeka kwapansi kumawonjezeka, potero kumapangitsanso kumamatira pakati pa kupondaponda kotentha. pepala ndi zokutira ndi kukhulupirika kwa kupondapo kotentha . Pamene bronzing ndondomeko anamaliza, kutentha akutsikira pansi gawo kusintha kutentha ndi kuuma kwa ❖ kuyanika akuchira.
2. Kuchokera ku kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kesindobundo / kapabungwengwengwangwangwangwangwangwaaniani ukwenzagologologologologologologologologologolongenangathenkensonketsenkepenkepenkepenkepelingape'
Vanishi yamtundu wa UV-mtundu wa PE idzalowetsa pang'onopang'ono zokutira zamagulu awiri a polyurethane. Ndikupanga chitetezo cha dziko, kupanga zoyera, kuchepetsa mpweya wa kaboni, komanso zoteteza zachilengedwe. Mavuto ena omwe amadza pakupanga ma varnish a UV amatha kuthetsedwa ndi varnish. Kusintha kwa chilinganizo cha wopanga, kusintha kwa makina opanga zida ndi fakitale ya payipi zimathetsedwa limodzi.
Malingaliro a kampani Shanghai Rainbow Industrial Co., Ltdimapereka njira imodzi yokha yopangira zodzikongoletsera.Ngati mumakonda zinthu zathu, mutha kulumikizana nafe,
Webusaiti: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，光固化技术已广泛庲应古医疗等领域。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、表面控制助剂以光。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、者光泽高、者固化、表面光泽高、老光泽高、耀光泽高、耀光料涂装中).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。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.
Nthawi yotumiza: Jan-06-2023