Kuwala kukakhala pakupanga zinthu zapulasitiki, mbali ina ya kuwala imawonekera kuchokera pamwamba pa chinthucho kuti ipangitse kuwala, ndipo mbali ina ya kuwala imachotsedwa ndikulowetsedwa mkati mwa pulasitiki.Mukakumana ndi pigment particles, kunyezimira, refraction ndi kufala kumachitika kachiwiri, ndi mtundu anasonyeza pigment particles.Mtundu wonyezimira.
Njira zopangira utoto za pulasitiki zomwe zimagwiritsidwa ntchito nthawi zambiri ndi: utoto wowuma, kupaka utoto wamtundu (mtundu wa phala), utoto wa masterbatch.
1. Kupaka utoto
Njira yosakaniza ndikuyika utoto mwachindunji ndi tona (mitundu kapena utoto) kuwonjezera kuchuluka koyenera kwa zowonjezera ufa ndi zida zapulasitiki zimatchedwa utoto wowuma.
Ubwino wa utoto wowuma ndi dispersibility wabwino komanso mtengo wotsika.Ikhoza kufotokozedwa mosasamala malinga ndi zosowa, ndipo kukonzekera ndikosavuta kwambiri.Imapulumutsa kugwiritsidwa ntchito kwa anthu ogwira ntchito ndi zinthu zakuthupi pokonza zopaka utoto monga ma masterbatches amitundu ndi ma pastes amitundu, ndiye kuti mtengo wake ndi wotsika, ndipo ogula ndi ogulitsa safunika kugwiritsa ntchito.Zimachepetsedwa ndi kuchuluka kwake;choyipa ndi chakuti pigment idzawulukira fumbi ndikuyambitsa kuipitsa panthawi yoyendetsa, kusungirako, kuyeza ndi kusakaniza, zomwe zidzakhudza malo ogwira ntchito komanso thanzi la ogwira ntchito.
2. Matani utoto wa utoto (mtundu wa phala).
Munjira yopaka utoto, utotowo nthawi zambiri umasakanizidwa ndi chothandizira chamadzimadzi (pulasitiki kapena utomoni) ndikuyika phala, kenako ndikusakanikirana ndi pulasitiki, monga phala la enamel, utoto, ndi zina zambiri.
Ubwino wa utoto pasty colorant (mtundu phala) ndi kuti kubalalitsidwa zotsatira zabwino, ndi kuipitsidwa fumbi si kupangidwa;kuipa kwake ndikuti kuchuluka kwa utoto sikophweka kuwerengera ndipo mtengo wake ndi wokwera.
3. Masterbatch utoto
Pokonzekera ma masterbatches amtundu, mitundu yoyenerera imakonzedwa poyamba, kenako inkiyi imasakanizidwa ndi chonyamulira cha masterbatch molingana ndi chiŵerengero cha formula.Mamolekyuwa amaphatikizidwa kwathunthu, kenako amapangidwa kukhala tinthu ting'onoting'ono tofanana ndi tinthu tating'onoting'ono tomwe timagwiritsidwa ntchito ndi zida zomangira kupanga zinthu zapulasitiki.Mukagwiritsidwa ntchito, gawo laling'ono (1% ~ 4%) liyenera kuwonjezeredwa ku utomoni wachikuda kuti mukwaniritse cholinga cha utoto.
Poyerekeza ndi mtundu wouma, mtundu wa masterbatch uli ndi ubwino wodziwikiratu: kuwongolera kuipitsidwa kwa chilengedwe chifukwa cha kuwuluka kwa tona, kusintha kwamtundu kosavuta pakagwiritsidwe ntchito, kuyeretsa kwapadera kwa extruder hopper, ndi chilinganizo chokhazikika Imakhala ndi magwiridwe antchito amphamvu ndipo imatha kuwonetsetsa kuti mtundu wa magulu awiri a masterbatches amtundu wa mtundu womwewo amakhalabe okhazikika.Choyipa cha utoto wa masterbatch ndikuti mtengo wopaka utoto ndiwokwera komanso kuchuluka kwa kukonzekera sikusinthika.Kuphatikiza apo, ma tona a pearlescent, ufa wa fulorosenti, ufa wonyezimira ndi ma tona ena amapangidwa kukhala ma masterbatches amitundu kenako amagwiritsidwa ntchito kupaka mapulasitiki.Poyerekeza ndi pulasitiki kusakaniza mwachindunji kwa mitundu, zotsatira (monga gloss, etc.) afooke ndi pafupifupi 10%, ndi jekeseni akamaumba mankhwala sachedwa kuyenda mizere.Mikwingwirima ndi seams.
maumboni
[1] Zhong Shuheng.Kupanga Kwamitundu.Beijing: China Art Publishing House, 1994.
[2] Song Zhuoyi et al.Pulasitiki zopangira ndi zowonjezera.Beijing: Science and Technology Literature Publishing House, 2006. [3] Wu Lifeng et al.Masterbatch User Manual.Beijing: Chemical Industry Press, 2011.
[4] Yu Wenjie et al.Zowonjezera Pulasitiki ndi Ukadaulo Wopanga Zopanga.3rd Edition.Beijing: Chemical Industry Press, 2010. [5] Wu Lifeng.Pulasitiki Coling Formulation Design.2nd Edition.Beijing: Chemical Viwanda Press, 2009
Nthawi yotumiza: Apr-09-2022