I-ABS, evame ukwaziwa ngokuthi i-acrylonitrile butadiene styrene, yakhiwa yi-copolymerization yama-monomers amathathu e-acrylonitrile-butadiene-styrene. Ngenxa yezilinganiso ezihlukene zama-monomers amathathu, kungaba nezakhiwo ezahlukene kanye nezinga lokushisa elincibilikayo, ukusebenza kokuhamba kwe-ABS, ukuhlangana namanye amapulasitiki noma izithasiselo, kungandisa ukusetshenziswa nokusebenza kwe-ABS.
I-fluidity ye-ABS iphakathi kwe-PS ne-PC, futhi uketshezi kwayo kuhlobene nezinga lokushisa lomjovo nokucindezela, futhi umthelela wengcindezi yomjovo mkhulu kancane. Ngakho-ke, ingcindezi ephezulu yomjovo ivame ukusetshenziswa ekubumbeni ukunciphisa i-viscosity encibilikayo futhi kuthuthukiswe ukugcwaliswa kwesikhunta. ukusebenza.
1. Ukucubungula kwepulasitiki
Izinga lokumunca amanzi le-ABS lilinganiselwa ku-0.2% -0.8%. Ku-ABS yezinga elijwayelekile, kufanele kubhakwe kuhhavini ku-80-85 ° C amahora angu-2-4 noma ku-hopper yokomisa ku-80 ° C amahora angu-1-2 ngaphambi kokucubungula. Ku-ABS ekwazi ukumelana nokushisa equkethe izingxenye ze-PC, izinga lokushisa lokumisa kufanele lenyuswe ngokufanelekile libe ngu-100°C, futhi isikhathi esithile sokumisa singanqunywa ngokukhipha umoya.
Ingxenye yezinto ezigaywe kabusha ayikwazi ukudlula ama-30%, futhi i-electroplating grade ABS ayikwazi ukusebenzisa izinto ezigaywe kabusha.
2. Ukukhethwa komshini wokubumba umjovo
Umshini wokubumba umjovo ojwayelekile we-Ramada ungakhethwa (isilinganiso se-screw-to-diameter ratio 20:1, isilinganiso sokucindezela sikhulu kuno-2, ingcindezi yomjovo inkulu kuno-1500bar). Uma i-masterbatch yombala isetshenziswa noma ukubonakala komkhiqizo kuphezulu, kungakhethwa isikulufu esinobubanzi obuncane. Amandla okubamba anqunywa ngokuya nge-4700-6200t/m2, okuncike ebangeni lepulasitiki kanye nezidingo zomkhiqizo.
3. Isikhunta kanye nomklamo wesango
Izinga lokushisa lesikhunta lingasethwa ku-60-65°C. Ububanzi bomgijimi 6-8mm. Ububanzi besango bungaba ngu-3mm, ubukhulu bufana nobomkhiqizo, futhi ubude besango kufanele bube ngaphansi kuka-1mm. Imbobo ye-vent ingu-4-6mm ububanzi no-0.025-0.05mm ubukhulu.
4. Izinga lokushisa elincibilikayo
Inganqunywa ngokunembile ngendlela yomjovo womoya. Amabanga ahlukene anezinga lokushisa elihlukile lokuncibilika, izilungiselelo ezinconyiwe zimi kanje:
Ibanga lomthelela: 220°C-260°C, okungcono kakhulu ngu-250°C
Electroplating grade: 250°C-275°C, okungcono 270°C
Ibanga elikwazi ukumelana nokushisa: 240°C-280°C, okungcono kakhulu ku-265°C-270°C
Ibanga elivimba amalangabi: 200°C-240°C, okungcono ku-220°C-230°C
Ibanga elibonisa ngale: 230°C-260°C, okungcono ku-245°C
Ibanga eliqiniswe i-fiber yengilazi: 230℃-270℃
Ngemikhiqizo enezidingo eziphezulu, sebenzisa izinga lokushisa eliphakeme lokuncibilika kanye nezinga lokushisa lesikhunta.
5. Isivinini sokujova
Isivinini esinensayo sisetshenziselwa ibanga elikwazi ukumelana nomlilo, futhi isivinini esisheshayo sisetshenziselwa ibanga elimelana nokushisa. Uma izidingo zangaphezulu zomkhiqizo ziphakeme, ukulawulwa kwesivinini somjovo wokubumba okunezigaba eziningi kufanele kusetshenziswe.
6. Ukucindezela emuva
Ngokuvamile, ukwehla kwengcindezi yangemuva, kungcono. Ukucindezela okusemuva okuvame ukusetshenziswa ngu-5bar, futhi impahla yokudaya idinga ingcindezi ephakeme yasemuva ukuze wenze ukuxubana kombala kulingane.
7. Isikhathi sokuhlala
Ezingeni lokushisa lika-265 ° C, isikhathi sokuhlala se-ABS ku-cylinder encibilikayo akufanele sidlule imizuzu engu-5-6 kakhulu. Isikhathi sokuvala amalangabi sifushane. Uma kudingekile ukumisa umshini, izinga lokushisa elibekiwe kufanele lehliselwe ku-100 ° C kuqala, bese isilinda sepulasitiki esincibilikisiwe kufanele sihlanzwe nge-ABS yenhloso evamile. Ingxube ehlanziwe kufanele ifakwe emanzini abandayo ukuvimbela ukubola okuqhubekayo. Uma udinga ukushintsha usuka kwamanye amapulasitiki uye ku-ABS, kufanele uqale uhlanze isilinda sepulasitiki esincibilikayo nge-PS, PMMA noma i-PE. Eminye imikhiqizo ye-ABS ayinankinga lapho isanda kukhululwa esikhunjeni, kodwa izoshintsha umbala ngemva kwesikhathi esithile, okungenzeka kubangelwe ukushisa ngokweqile noma ukuhlala kwepulasitiki ku-cylinder encibilikayo isikhathi eside.
8. Ngemuva kokucubungula imikhiqizo
Ngokuvamile, imikhiqizo ye-ABS ayidingi ukucubungula ngemva kokucubungula, kufanele kubhakwe kuphela imikhiqizo yebanga le-electroplating (70-80°C, amahora angu-2-4) ukuze kudlule amamaki angaphezulu, futhi imikhiqizo edinga ukufakwa ugesi ayikwazi ukusebenzisa i-ejenti yokukhulula. , futhi imikhiqizo kufanele ipakishwe ngokushesha ngemva kokukhishwa .
9. Izindaba ezidinga ukunakwa okukhethekile lapho zibunjwa
Kunamamaki amaningana e-ABS (ikakhulukazi ibanga lokubuyiswa komlilo), ukuncibilika okunamathela ngokuqinile ebusweni besikulufu ngemva kokwenziwa kwepulasitiki, futhi kuzobola ngemva kwesikhathi eside. Uma isimo esingenhla senzeka, kuyadingeka ukukhipha isigaba se-screw homogenization kanye ne-compressor yokusula, futhi uhlanze njalo isikulufu nge-PS, njll.
Isikhathi sokuthumela: Aug-09-2023