I-ABS, eyaziwa kakhulu ngokuthi i-acrylonitrile butadiene styrene, yakhiwa yi-copolymerization yama-monomer amathathu e-acrylonitrile-butadiene-styrene. Ngenxa yezilinganiso ezahlukene zama-monomer amathathu, kungaba nezakhiwo ezahlukene kanye nokushisa okuncibilikayo, ukusebenza kokuhamba kwe-ABS, ukuxubana namanye amapulasitiki noma izithasiselo, kungandisa ukusetshenziswa nokusebenza kwe-ABS.
Ukugeleza kwe-ABS kuphakathi kwe-PS ne-PC, futhi ukugeleza kwayo kuhlobene nokushisa komjovo kanye nengcindezi, futhi ithonya lokucindezela komjovo likhulu kancane. Ngakho-ke, ingcindezi ephezulu yomjovo ivame ukusetshenziswa ekubumbeni ukunciphisa ukuncibilika kokuncibilika nokuthuthukisa ukusebenza kokugcwaliswa kwesikhunta.
1. Ukucutshungulwa kwepulasitiki
Izinga lokumuncwa kwamanzi le-ABS licishe libe ngu-0.2%-0.8%. Ku-ABS yezinga elijwayelekile, kufanele ibhakwe kuhhavini ku-80-85°C amahora angu-2-4 noma ku-drying hopper ku-80°C amahora angu-1-2 ngaphambi kokucutshungulwa. Ku-ABS engashisi equkethe izingxenye ze-PC, izinga lokushisa lokomisa kufanele lenyuswe ngokufanele libe ngu-100°C, futhi isikhathi esithile sokomisa singanqunywa ngokuphuma komoya.
Ingxenye yezinto ezisetshenzisiwe ayikwazi ukudlula u-30%, kanti i-ABS yebanga le-electroplating ayikwazi ukusebenzisa izinto ezisetshenzisiwe.
2. Ukukhethwa komshini wokubumba umjovo
Umshini wokubumba ojwayelekile we-Ramada ungakhethwa (isilinganiso sobude besikulufu kuya kububanzi obungu-20:1, isilinganiso sokucindezela esikhulu kune-2, ingcindezi yomjovo enkulu kune-1500bar). Uma kusetshenziswa i-masterbatch yombala noma ukubukeka komkhiqizo kuphakeme, isikulufu esinobubanzi obuncane singakhethwa. Amandla okubopha anqunywa ngokuya nge-4700-6200t/m2, okuncike ebangeni lepulasitiki kanye nezidingo zomkhiqizo.
3. Umklamo wesikhunta nesango
Izinga lokushisa lesikhunta lingabekwa ku-60-65°C. Ububanzi be-runner bungu-6-8mm. Ububanzi besango bungaba ngu-3mm, ubukhulu bufana nobomkhiqizo, kanti ubude besango kufanele bube ngaphansi kuka-1mm. Umgodi womoya ubanzi ngo-4-6mm kanye nobukhulu obungu-0.025-0.05mm.
4. Izinga lokushisa elincibilikayo
Kunganqunywa ngokunembile ngendlela yokujova umoya. Amazinga ahlukene anokushisa okuhlukile kokuncibilika, izilungiselelo ezinconywayo yilezi ezilandelayo:
Izinga lomthelela: 220°C-260°C, okungcono kube ngu-250°C
Izinga lokufaka i-electroplating: 250°C-275°C, okungcono kube ngu-270°C
Izinga elimelana nokushisa: 240°C-280°C, okungcono kube ngu-265°C-270°C
Izinga lokuvimbela ilangabi: 200°C-240°C, okungcono kube ngu-220°C-230°C
Izinga elibonakalayo: 230°C-260°C, okungcono kube ngu-245°C
Ibanga eliqinisiwe lefayibha yengilazi: 230℃ -270℃
Ngemikhiqizo enezidingo eziphezulu zobuso, sebenzisa izinga lokushisa eliphakeme lokuncibilika kanye nezinga lokushisa lesikhunta.
5. Isivinini somjovo
Isivinini esisheshayo sisetshenziselwa izinga elingashisi, kanti isivinini esisheshayo sisetshenziselwa izinga elingashisi. Uma izidingo zomphezulu womkhiqizo ziphezulu, kufanele kusetshenziswe ukulawula isivinini somjovo wokubumba umjovo onesivinini esikhulu futhi onezigaba eziningi.
6. Ukucindezeleka komhlane
Ngokuvamile, uma ingcindezi yangemuva iphansi, kungcono. Ingcindezi yangemuva evame ukusetshenziswa ingu-5bar, futhi izinto zokudaya zidinga ingcindezi yangemuva ephezulu ukuze umbala uhlangane ngokulinganayo.
7. Isikhathi sokuhlala
Uma izinga lokushisa lingu-265°C, isikhathi sokuhlala kwe-ABS kusilinda esincibilikayo akufanele sidlule imizuzu emi-5-6 okungenani. Isikhathi esivimbela ilangabi sifushane. Uma kudingeka umise umshini, izinga lokushisa elibekiwe kufanele lehliswe libe ngu-100°C kuqala, bese isilinda sepulasitiki esincibilikisiwe kufanele sihlanzwe nge-ABS ejwayelekile. Ingxube ehlanziwe kufanele ifakwe emanzini abandayo ukuvimbela ukubola okwengeziwe. Uma udinga ukushintsha kusuka kwamanye amapulasitiki uye ku-ABS, kufanele uqale uhlanze isilinda sepulasitiki esincibilikisiwe nge-PS, PMMA noma i-PE. Eminye imikhiqizo ye-ABS ayinankinga uma isanda kukhishwa esikhumbeni, kodwa izoshintsha umbala ngemva kwesikhathi esithile, okungase kubangelwe ukushisa ngokweqile noma ukuhlala kwepulasitiki kusilinda esincibilikisiwe isikhathi eside kakhulu.
8. Ngemva kokucutshungulwa kwemikhiqizo
Ngokuvamile, imikhiqizo ye-ABS ayidingi ukucutshungulwa ngemuva, imikhiqizo yezinga le-electroplating kuphela edinga ukubhakwa (70-80°C, amahora angu-2-4) ukuze kususwe izimpawu zobuso, futhi imikhiqizo edinga ukugcotshwa nge-electroplating ayikwazi ukusebenzisa i-release agent, futhi imikhiqizo kumele ipakishwe ngokushesha ngemva kokukhishwa.
9. Izinto ezidinga ukunakwa okukhethekile lapho kubumba
Kunezinhlobo eziningana ze-ABS (ikakhulukazi izinga elivimbela ilangabi), ukuncibilika kwayo okunamathelayo okuqinile ebusweni besikulufu ngemva kokufakelwa ipulasitiki, futhi kuzobola ngemva kwesikhathi eside. Uma kwenzeka lesi simo esingenhla, kubalulekile ukukhipha ingxenye ye-screw homogenization kanye ne-compressor yokusula, bese uhlanza isikulufu njalo nge-PS, njll.
Isikhathi sokuthunyelwe: Agasti-09-2023
