I-ABS, eyaziwa ngokuba yi-acrylonitrile butadiene styrene, yenziwa yi-copolymerization yee-monomers ezintathu ze-acrylonitrile-butadiene-styrene. Ngenxa yemilinganiselo eyahlukeneyo yee-monomers ezintathu, kunokubakho iipropati ezahlukeneyo kunye nobushushu obunyibilikayo, ukusebenza kokuhamba kwe-ABS, ukudibanisa nezinye iiplastiki okanye izongezo, kunokwandisa ukusetyenziswa kunye nokusebenza kwe-ABS.
I-fluidity ye-ABS iphakathi kwe-PS kunye nePC, kwaye ukumanzi kwayo kuhambelana nobushushu benaliti kunye noxinzelelo, kwaye impembelelo yoxinzelelo lwenaliti inkulu kancinci. Ke ngoko, uxinzelelo oluphezulu lwenaliti luhlala lusetyenziswa ekubumbeni ukunciphisa i-viscosity enyibilikayo kunye nokuphucula ukuzaliswa komngundo. ukusebenza.
1. Ukulungiswa kweplastiki
Umlinganiselo wokufunxa amanzi we-ABS umalunga ne-0.2% -0.8%. Kwinqanaba eliqhelekileyo le-ABS, kufuneka ibhakwe kwi-oven kwi-80-85 ° C kwiiyure ezingama-2-4 okanye kwi-hopper yokumisa kwi-80 ° C kwiiyure ezingama-1-2 ngaphambi kokucubungula. I-ABS ekwazi ukumelana nobushushu equkethe amacandelo e-PC, ukushisa kokumisa kufuneka kwandiswe ngokufanelekileyo ukuya kwi-100 ° C, kwaye ixesha elithile lokumisa linokumiselwa ngokukhupha umoya.
Ubungakanani bezinto ezisetyenzisiweyo azikwazi ukudlula i-30%, kwaye i-electroplating grade ABS ayikwazi ukusebenzisa izinto ezihlaziyiweyo.
2. Ukukhethwa komatshini wokubumba inaliti
Umatshini wokubumba we-Ramada oqhelekileyo wokubumba unokukhethwa (ubude be-screw-to-diameter ratio 20: 1, umlinganiselo woxinzelelo olukhulu kune-2, uxinzelelo lwe-injection enkulu kune-1500bar). Ukuba i-masterbatch yombala isetyenzisiweyo okanye ukubonakala kwemveliso kuphezulu, i-screw ene-diameter encinci inokukhethwa. I-clamping force inqunywe ngokwe-4700-6200t / m2, exhomekeke kwibakala leplastiki kunye neemfuno zemveliso.
3. Uyilo lokungunda kunye nesango
Iqondo lobushushu lokungunda lingamiselwa kwi-60-65°C. Idayamitha yembaleki 6-8mm. Ububanzi besango bu malunga ne-3mm, ubukhulu bufana nemveliso, kwaye ubude besango kufuneka bube ngaphantsi kwe-1mm. Umngxuma we-vent yi-4-6mm ububanzi kunye ne-0.025-0.05mm ubukhulu.
4. Ubushushu obunyibilikayo
Inokuqinisekiswa ngokuchanekileyo ngendlela yokutofa umoya. Amabanga ahlukeneyo anobushushu obuhlukeneyo bokunyibilika, iisetingi ezicetyiswayo zezi zilandelayo:
Ibanga lempembelelo: 220°C-260°C, kukhethwa ukuba ibe ngama-250°C
Electroplating grade: 250°C-275°C, kukhethwa 270°C
Ibanga elimelana nobushushu: 240°C-280°C, kubhetele ukuba yi-265°C-270°C
Ibanga elibuyiswayo kwidangatye: 200°C-240°C, kukhethwa ukuba ibe ngama-220°C-230°C
Umgangatho ocacileyo: 230°C-260°C, kukhethwa ukuba ibe ngama-245°C
Ifayibha yeglasi ibakala elomeleziweyo: 230℃-270℃
Kwiimveliso ezineemfuno zomgangatho ophezulu, sebenzisa ubushushu obuphezulu bokunyibilika kunye nobushushu bokungunda.
5. Isantya sokutofa
Isantya esicothayo sisetyenziselwa ibakala lokumelana nomlilo, kwaye isantya esikhawulezayo sisetyenziselwa ibakala elimelana nobushushu. Ukuba iimfuno zomphezulu wemveliso ziphezulu, isantya esiphezulu kunye nenqanaba lokubumba inaliti yokubumba isantya solawulo kufuneka sisetyenziswe.
6. Uxinzelelo lwangasemva
Ngokubanzi, ukuthoba uxinzelelo lwasemva, kungcono. Uxinzelelo oluqhelekileyo olusetyenziswa ngasemva yi-5bar, kwaye izinto zokudaya zifuna uxinzelelo oluphezulu lwasemva ukwenza umxube wombala ulingane.
7. Ixesha lokuhlala
Kwiqondo lokushisa lama-265 ° C, ixesha lokuhlala le-ABS kwi-cylinder encibilikayo akufanele lidlule imizuzu emi-5-6 kakhulu. Ixesha lokubuyiswa komlilo lifutshane. Ukuba kuyimfuneko ukumisa umatshini, ubushushu obumiselweyo kufuneka buthotywe ukuya kwi-100 ° C kuqala, kwaye emva koko i-cylinder yeplastiki enyibilikayo kufuneka ihlambuluke nge-ABS yenjongo jikelele. Umxube ocociweyo kufuneka ufakwe emanzini abandayo ukukhusela ukubola okuqhubekayo. Ukuba ufuna ukutshintsha ukusuka kwezinye iiplastiki ukuya kwi-ABS, kufuneka uqale ucoce i-cylinder yeplastiki enyibilikayo nge-PS, PMMA okanye i-PE. Ezinye iimveliso ze-ABS azinangxaki xa zisanda kukhululwa kubumba, kodwa ziya kutshintsha umbala emva kwexesha elithile, ezinokubangelwa kukufudumala okanye ukuhlala kweplastiki kwi-cylinder yokunyibilika ixesha elide.
8. Emva kokulungiswa kweemveliso
Ngokubanzi, iimveliso ze-ABS azidingi ukucwangciswa kwe-post-processing, kuphela iimveliso zebanga le-electroplating kufuneka zibhakwe (70-80 ° C, iiyure ezi-2-4) ukuze zigqithise amanqaku angaphezulu, kwaye iimveliso ezidinga ukuhlanjululwa kwe-electroplated azikwazi ukusebenzisa i-arhente yokukhulula. , kwaye iimveliso kufuneka zipakishwe ngokukhawuleza emva kokuba zikhutshiwe .
9. Imiba efuna ingqalelo ekhethekileyo xa kubunjwa
Kukho amabakala amaninzi e-ABS (ingakumbi ibakala lokubuyiswa komlilo), ukunyibilika kwayo kunamathele ngokuqinileyo kumphezulu we-screw emva kweplastiki, kwaye iya kubola emva kwexesha elide. Xa imeko engentla isenzeka, kuyimfuneko ukukhupha icandelo le-screw homogenization kunye ne-compressor yokucima, kwaye uhlambulule rhoqo i-screw nge-PS, njl.
Ixesha lokuposa: Aug-09-2023