Njira Yochiritsira UV ndi EB

Kuchiritsa kwa UV ndi EB nthawi zambiri kumatanthauza kugwiritsa ntchito kuwala kwa ma electron beam (EB), ultraviolet (UV) kapena kuwala kooneka kuti kuphatikize ma monomers ndi oligomers pa substrate. Zinthu za UV ndi EB zitha kupangidwa kukhala inki, zokutira, zomatira kapena chinthu china. Njirayi imadziwikanso kuti radiation curing kapena radcure chifukwa UV ndi EB ndi magwero a mphamvu zowala. Magwero a mphamvu za UV kapena kuwala kooneka nthawi zambiri amakhala nyali za mercury zopanikizika pang'ono, nyali za xenon zoyendetsedwa ndi pulsed, ma LED kapena ma laser. EB–mosiyana ndi ma photon a kuwala, omwe nthawi zambiri amayamwa makamaka pamwamba pa zinthu– amatha kulowa m'zinthu.
Zifukwa Zitatu Zokakamiza Zosinthira ku UV ndi EB Technology
Kusunga Mphamvu ndi Kupanga Bwino: Popeza machitidwe ambiri alibe zosungunulira ndipo amafunika kuchepetsedwa ndi sekondi imodzi, phindu la kupanga lingakhale lalikulu kwambiri poyerekeza ndi njira zamakono zokutira. Liwiro la intaneti la 1,000 ft/min. ndi lofala ndipo chinthucho chimakhala chokonzeka nthawi yomweyo kuti chiyesedwe ndikutumizidwa.

Yoyenera Zinthu Zosakhwima: Makina ambiri alibe madzi kapena zosungunulira. Kuphatikiza apo, njirayi imapereka ulamuliro wonse wa kutentha komwe kumakonzedwa kuti ikhale yoyenera kugwiritsidwa ntchito pazinthu zosakhwima zomwe zimakhudzidwa ndi kutentha.

Zothandiza pa chilengedwe komanso kugwiritsa ntchito: Zinthu zopangidwa ndi ulusi nthawi zambiri sizimasungunuka kotero mpweya woipa komanso kuyaka sizili vuto. Makina oyeretsera kuwala amagwirizana ndi njira zonse zogwiritsira ntchito ndipo amafunika malo ochepa. Nyali za UV nthawi zambiri zimatha kuyikidwa pamizere yopangira yomwe ilipo.

Mitundu Yochiritsika ya UV ndi EB
Ma monomer ndi zinthu zosavuta kwambiri zomwe zimapangidwa kuchokera ku zinthu zachilengedwe zopangidwa. Monomer yosavuta yochokera ku chakudya cha mafuta ndi ethylene. Imaimiridwa ndi: H2C=CH2. Chizindikiro "=" pakati pa mayunitsi awiri kapena maatomu a kaboni chikuyimira malo osinthika kapena, monga momwe akatswiri a zamankhwala amatchulira, "maubwenzi awiri" kapena kusakwanira. Ndi malo ngati awa omwe amatha kuchitapo kanthu kuti apange zinthu zazikulu kapena zazikulu za mankhwala zotchedwa oligomers ndi ma polima.

Polima ndi gulu la mayunitsi ambiri (monga poly-) obwerezabwereza a monomer yomweyo. Mawu akuti oligomer ndi mawu apadera omwe amagwiritsidwa ntchito potchula ma polima omwe nthawi zambiri amatha kusinthidwa kuti apange kuphatikiza kwakukulu kwa ma polima. Malo osakwanira pa oligomers ndi monomers okha sadzakumana ndi reaction kapena crosslinking.

Pankhani ya kuchira kwa ma elekitironi, ma elekitironi amphamvu kwambiri amalumikizana mwachindunji ndi ma atomu a malo osakhuta kuti apange molekyulu yogwira ntchito kwambiri. Ngati UV kapena kuwala kowoneka kugwiritsidwa ntchito ngati gwero la mphamvu, choyambitsa kuwala chimawonjezedwa ku chisakanizocho. Choyambitsa kuwala, chikawonekera ku kuwala, chimapanga ma free radical kapena zochita zomwe zimayambitsa kulumikizana pakati pa malo osakhuta. Mphamvu za UV &ude

Oligomers: Katundu wonse wa chophimba chilichonse, inki, guluu kapena chomangira chomwe chimalumikizidwa ndi mphamvu yowala chimatsimikiziridwa makamaka ndi oligomers omwe amagwiritsidwa ntchito popanga. Oligomers ndi ma polima otsika pang'ono a molekyulu, omwe ambiri amachokera ku acrylation ya kapangidwe kake kosiyanasiyana. Acrylation imapatsa gulu la "C=C" losakwanira kapena "C=C" kumapeto kwa oligomer.

Ma Monomers: Ma Monomers amagwiritsidwa ntchito makamaka ngati zosungunulira kuti achepetse kukhuthala kwa zinthu zosakonzedwa kuti zithandize kugwiritsa ntchito. Amatha kukhala amodzi okha, okhala ndi gulu limodzi lokha lochita zinthu kapena malo osakwanira, kapena ntchito zambiri. Kusakwanira kumeneku kumawalola kuchitapo kanthu ndikulowetsedwa mu zinthu zokonzedwa kapena zomalizidwa, m'malo mosinthasintha mumlengalenga monga momwe zimakhalira ndi zokutira wamba. Ma Monomers ambiri, chifukwa ali ndi malo awiri kapena angapo osinthika, amapanga maulalo pakati pa mamolekyu a oligomer ndi ma monomers ena omwe apangidwa.

Photoinitiators: Chosakaniza ichi chimayamwa kuwala ndipo chimayambitsa kupanga ma free radicals kapena zochita. Ma free radicals kapena zochita ndi mitundu yamphamvu kwambiri yomwe imayambitsa kulumikizana pakati pa malo osakwanira a ma monomers, oligomers ndi ma polima. Photoinitiators safunikira pamakina okonzedwa ndi beam ya electron chifukwa ma electron amatha kuyambitsa kulumikizana.

Zowonjezera: Zodziwika kwambiri ndi zokhazikika, zomwe zimaletsa kusungunuka kwa madzi m'malo osungira komanso kuuma msanga chifukwa cha kuwala kochepa. Ma pigment amitundu, utoto, zoteteza kuuma, zolimbikitsira kuuma, zopangitsa kuti madzi aziphwanyika, zonyowetsa madzi ndi zothandiza kutsetsereka ndi zitsanzo za zowonjezera zina.