Fluorescent whitening wothandizirawakhala akugwira ntchito ya "monosodium glutamate" pokonza pulasitiki.Kuphatikizika kwa zikwi khumi kumatha kuyera ndikuwunikira zinthu zapulasitiki ndikuwongolera mawonekedwe apulasitiki.
Pali njira zambiri zowonjezerera ma whitening agents, koma njira zawo zogwiritsira ntchito zimagawidwa m'magulu atatu: kuyera kouma, kunyowa konyowa ndi masterbatch whitening.
Kuyanika whitening
Pulasitiki youma whitening ndi kuwonjezera kuchuluka kwa fulorosenti whitening wothandizira youma ufa mwachindunji pulasitiki gawo lapansi pamaso akamaumba, kusakaniza ndi pulasitiki gawo lapansi poyamba, ndi extrude osakaniza pamene extruder kufika kutentha pulasitiki kusungunuka.Sungunulani mu wononga kuti pulasitiki whitening wothandizira mofanana anagawira kusungunuka, ndipo potsiriza kuchita granulation kapena psinjika akamaumba.
Youma ndondomeko pulasitiki whitening wothandizira zimagwiritsa ntchito jekeseni akamaumba whitening wa okhwima PVC, polyethylene, polypropylene, ABS ndi utomoni zina thermoplastic.Zopangira zoyera za fluorescent zomwe zimagwiritsidwa ntchito poyera zowuma ndizotsika mtengo, koma zimakhala ndi zoyipa zakumwaza fumbi lalikulu komanso kuwononga chilengedwe.
Kuyera kwa zochitika
Pofuna kupititsa patsogolo kubalalitsidwa kwa kuyera konyowa, nthawi zina kumafunika kuwonjezera kuchuluka kwa binder kwa pulasitiki yoyera, kuti pulasitiki yoyera ikhale yoyera bwino kumamatira pamwamba pa zinthuzo, kuti muchepetse fumbi. kuwuluka ndi kuipitsa.
Chowunikira cha pulasitiki chingathenso kumwazikana mu njira yothandizira ndikuwonjezedwa mumagulu mwa mawonekedwe a kubalalitsidwa kothandizira.Mwachitsanzo, itha kugwiritsidwa ntchito mu polyvinyl chloride yofewa (PVC), yomwe imatha kupangidwa kukhala 10% phthalic acid.Pambuyo pa njira ya dioctyl ester plasticizer, idawonjezeredwa mumagulu.
Mu kunyowa whitening, ndipulasitiki whitening wothandizirandi slurry womwazika bwino, womwe uli ndi vuto lomata chifukwa chosungunulira chachilengedwe chosasunthika chimasakanizidwa mu plasticizer.Hony Chemical nthawi zambiri imalimbikitsa njira yoyera iyi ya PVC yofewa.
Masterbatch whitening
Pakadali pano, kugwiritsa ntchito "masterbatch" mu pulasitiki kwakhala njira yofunika kwambiri yopangira utoto wa pulasitiki.Mukamagwiritsa ntchito mtundu wa masterbatch, bola ngati mtundu wa masterbatch ndi utomoni umasakanizidwa molingana, ukhoza kugwiritsidwa ntchito mwachindunji popanga zinthu zapulasitiki.
Kugwedeza pang'ono kumangofunika kuchitidwa ndi manja.Pankhani ya kuchuluka kwa processing, pofuna kuonetsetsa dispersibility wa masterbatch, makina oyambitsa angagwiritsidwe ntchito.Pambuyo masterbatch mtundu umakanizidwa ndi makina pulasitiki utomoni, akhoza kutumizidwa ku makina jekeseni akamaumba ndi chisanadze akamaumba chipangizo, ndipo mtundu chisanadze kuumbidwa nthawi yomweyo.
Kusamala kuti mugwiritse ntchito
Choyamba, kuchuluka kwa fluorescent whitening kuyenera kuyendetsedwa bwino.Kuchuluka kwa whitening wothandizira anawonjezera si zabwino monga n'kotheka.Kuchulukirachulukira kumapangitsa pulasitiki kukhala yachikasu.Chachiwiri, chowunikira ndi zida zopangira ziyenera kugwedezeka mofanana.
Nazi njira zingapo zogwiritsira ntchito zounikira pulasitiki, ndi zomwe muyenera kusankha malinga ndi momwe zinthu zilili.Ngati muli ndi mafunso okhudza kugwiritsa ntchitozowunikira pulasitiki, chonde omasuka kusiya uthenga pa bolodi la mauthenga.
Nthawi yotumiza: Mar-26-2022