ABS, yomwe imadziwika kuti acrylonitrile butadiene styrene, imapangidwa ndi copolymerization ya monomers atatu acrylonitrile-butadiene-styrene. Chifukwa cha magawo osiyanasiyana a ma monomers atatu, pakhoza kukhala katundu wosiyanasiyana ndi kutentha kosungunuka, kuyenda kwa ABS, kusakanikirana ndi mapulasitiki ena kapena zowonjezera, zitha kukulitsa kugwiritsa ntchito ndi magwiridwe antchito a ABS.
The fluidity ya ABS ili pakati pa PS ndi PC, ndipo fluidity yake imagwirizana ndi kutentha kwa jekeseni ndi kupanikizika, ndipo mphamvu ya jekeseni ya jekeseni imakhala yaikulu pang'ono. Chifukwa chake, kupanikizika kwambiri kwa jakisoni nthawi zambiri kumagwiritsidwa ntchito pomanga kuti muchepetse kukhuthala kwa kusungunuka ndikuwongolera kudzaza nkhungu. ntchito.
1. Pulasitiki processing
Mayamwidwe amadzi a ABS ndi pafupifupi 0.2% -0.8%. Kwa ABS wamba, iyenera kuphikidwa mu uvuni wa 80-85 ° C kwa maola 2-4 kapena mu hopper yowumitsa pa 80 ° C kwa maola 1-2 musanayambe kukonza. Kwa ABS yosamva kutentha yomwe ili ndi zigawo za PC, kutentha kowumitsa kuyenera kuwonjezereka mpaka 100 ° C, ndipo nthawi yowuma yeniyeni imatha kutsimikiziridwa ndi kutuluka kwa mpweya.
Gawo la zinthu zobwezerezedwanso silingadutse 30%, ndipo kalasi ya electroplating ABS sitha kugwiritsa ntchito zida zobwezerezedwanso.
2. Kusankha makina opangira jekeseni
Makina opangira jakisoni okhazikika a Ramada amatha kusankhidwa (chiyerekezo cha kutalika mpaka m'mimba mwake 20: 1, compression chiŵerengero chachikulu kuposa 2, kuthamanga kwa jakisoni kupitilira 1500bar). Ngati mtundu wa masterbatch ukugwiritsidwa ntchito kapena mawonekedwe a chinthucho ndi okwera, wononga ndi mainchesi ochepa amatha kusankhidwa. Mphamvu ya clamping imatsimikiziridwa molingana ndi 4700-6200t/m2, zomwe zimatengera kalasi yapulasitiki ndi zofunikira zazinthu.
3. Mapangidwe a nkhungu ndi zipata
Kutentha kwa nkhungu kumatha kukhazikitsidwa pa 60-65 ° C. M'mimba mwake 6-8 mm. Kutalika kwa chipata ndi pafupifupi 3mm, makulidwe ake ndi ofanana ndi a mankhwalawo, ndipo kutalika kwa chipata kuyenera kukhala kosakwana 1mm. Bowo lolowera ndi 4-6mm m'lifupi ndi 0.025-0.05mm wandiweyani.
4. Sungunulani kutentha
Ikhoza kutsimikiziridwa molondola ndi njira ya jekeseni wa mpweya. Magiredi osiyanasiyana ali ndi kutentha kosiyanasiyana kosungunuka, zokonda zovomerezeka ndi izi:
Gulu lamphamvu: 220°C-260°C, makamaka 250°C
Electroplating kalasi: 250°C-275°C, makamaka 270°C
Kusamva kutentha: 240°C-280°C, makamaka 265°C-270°C
Kutentha koletsa moto: 200°C-240°C, makamaka 220°C-230°C
Transparent grade: 230°C-260°C, makamaka 245°C
Galasi CHIKWANGWANI analimbitsa kalasi: 230 ℃ -270 ℃
Pazinthu zomwe zimafunikira kwambiri pamtunda, gwiritsani ntchito kutentha kwapamwamba kosungunuka ndi kutentha kwa nkhungu.
5. Kuthamanga kwa jekeseni
Kuthamanga kwapang'onopang'ono kumagwiritsidwa ntchito ngati kalasi yosagwira moto, ndipo kuthamanga kwachangu kumagwiritsidwa ntchito ngati kalasi yosamva kutentha. Ngati zofunikira zapamtunda za mankhwalawa ndizokwera kwambiri, kuwongolera kuthamanga kwa jekeseni wothamanga kwambiri komanso wamitundu yambiri kuyenera kugwiritsidwa ntchito.
6. Kupanikizika kwa msana
Kawirikawiri, kutsika kwa msana wam'mbuyo kumakhala bwino. Kupanikizika kwam'mbuyo komwe kumagwiritsidwa ntchito nthawi zambiri ndi 5bar, ndipo zida zodaya zimafunikira kupanikizika kwambiri kumbuyo kuti kusakanikirana kwamitundu kukhale kofanana.
7. Nthawi yokhalamo
Pa kutentha kwa 265 ° C, nthawi yokhalamo ABS mu silinda yosungunuka sayenera kupitirira mphindi 5-6 kwambiri. Nthawi yoletsa moto ndi yayifupi. Ngati kuli kofunikira kuyimitsa makinawo, kutentha kokhazikitsidwa kuyenera kutsitsidwa kaye mpaka 100 ° C, ndiyeno silinda yapulasitiki yosungunuka iyenera kutsukidwa ndi ABS. Kusakaniza kotsukidwa kuyenera kuikidwa m'madzi ozizira kuti asawonongeke. Ngati mukufuna kusintha mapulasitiki ena kupita ku ABS, muyenera kuyeretsa kaye silinda yapulasitiki yosungunuka ndi PS, PMMA kapena PE. Zinthu zina za ABS sizikhala ndi vuto zikangotulutsidwa mu nkhungu, koma zimasintha mtundu pakapita nthawi, zomwe zimatha chifukwa cha kutentha kwambiri kapena pulasitiki kukhala mu silinda yosungunuka kwa nthawi yayitali.
8. Pambuyo pokonza zinthu
Nthawi zambiri, zinthu za ABS sizifunikira kukonzanso pambuyo pake, zopangira ma electroplating grade okha ndi omwe amafunika kuphikidwa (70-80 ° C, maola 2-4) kuti adutse zidziwitso zapamtunda, ndipo zinthu zomwe zimafunika kupangidwa ndi electroplated sizingagwiritse ntchito chotulutsa. , ndipo zinthuzo ziyenera kupakidwa nthawi yomweyo zikatuluka .
9. Zinthu zofunika kuziganizira mwapadera poumba
Pali magiredi angapo a ABS (makamaka kalasi yoletsa moto), kusungunuka kwake kumamatira mwamphamvu pamwamba pa wononga pambuyo pa plasticization, ndikuwola pakapita nthawi yayitali. Zomwe zili pamwambazi zikachitika, ndikofunikira kuti mutulutse gawo la wononga homogenization ndi kompresa kupukuta, ndikuyeretsa wononga ndi PS, ndi zina zambiri.
Nthawi yotumiza: Aug-09-2023