Igama lekhemikhali le-acrylic yi-polymethylmethacrylate (PMMA ngesiNgisi). Ngenxa yokushiyeka kwe-PMMA njengokuqina kobuso obuphansi, ukuhlikihla kalula, ukumelana nomthelela ophansi, nokusebenza kabi kokugeleza kokubumba, ukuguqulwa kwe-PMMA kuvele ngokulandelana. Okufana ne-copolymerization ye-methyl methacrylate nge-styrene ne-butadiene, ukuhlanganiswa kwe-PMMA ne-PC, njll.
Ukuziphatha kokugeleza kwePMMAkubi kakhulu kunaleyo ye-PS ne-ABS, futhi i-viscosity encibilikayo izwela kakhulu ekushintsheni kwezinga lokushisa. Phakathi nenqubo yokubumba, i-viscosity yokuncibilika ishintshwa ngokuyinhloko ngokusekelwe ekushiseni komjovo. I-PMMA iyi-polymer e-amorphous enezinga lokushisa elincibilikayo elingaphezu kuka-160°C kanye nezinga lokushisa lokubola lika-270°C.
1. Ukulahlwa kwamapulasitiki
I-PMMA inezinga elithile lokumuncwa kwamanzi, ngezinga lokumunca amanzi lika-0.3-0.4%. Ukubumba umjovo kudinga umswakama ongaphansi kuka-0.1%, ngokuvamile u-0.04%. Ukuba khona komswakama kubangela amabhamuza, ama-air streaks, nokuncipha kokungafihli ekuncibilikeni. Ngakho idinga ukomiswa. Izinga lokushisa lokumisa lingama-80-90℃futhi isikhathi sokumisa singaphezu kwamahora ama-3. Izinto ezigaywe kabusha zingasetshenziswa 100% kwezinye izimo. Inani langempela lincike ezidingweni zekhwalithi, ngokuvamile ezingaphezu kuka-30%. Izinto ezigaywe kabusha kufanele zigwenywe ekungcoleni, ngaphandle kwalokho kuzothinta ukucaca kanye nezakhiwo zomkhiqizo oqediwe.
2. Ukukhethwa komshini wokubumba umjovo
I-PMMA ayinazo izidingo ezikhethekile zemishini yokubumba umjovo. Ngenxa ye-viscosity yayo ephezulu yokuncibilika, idinga i-groove ejulile kanye nembobo ye-nozzle enkulu. Uma izidingo zamandla zomkhiqizo ziphakeme, isikulufu esine-aspect ratio enkulu kufanele sisetshenziselwe ukwenza ipulasitiki yezinga lokushisa eliphansi. Ngaphezu kwalokho, i-PMMA kumele igcinwe ku-hopper eyomile.
3. Isikhunta kanye nomklamo wesango
Izinga lokushisa lesikhunta lingaba ngu-60℃-80℃. Ububanzi besiteshi esikhulu kufanele bufane ne-taper yangaphakathi. I-engeli elungile ngu-5° kuye 7°. Uma ufuna ukujova isikhunta esingu-4mm noma ngaphezulu kwemikhiqizo, i-engeli kufanele ibe ngu-7° futhi ububanzi bomzila oyinhloko kufanele bube ngu-8 kuya ku-8°. 10mm, ubude besango bubonke akumele budlule u-50mm. Emikhiqizweni enokuqina kodonga ngaphansi kuka-4mm, ububanzi besiteshi sokugeleza kufanele bube ngu-6-8mm
Ngemikhiqizo enodonga olukhulu kuno-4mm, ububanzi bomgijimi kufanele bube ngu-8-12mm. Ukujula kwamasango e-diagonal, amise okwefeni futhi ame mpo kufanele kube ngu-0.7 kuya ku-0.9t (t uwugqinsi lodonga lomkhiqizo). Ububanzi besango lenaliti kufanele bube ngu-0.8 kuya ku-2mm; usayizi omncane kufanele kukhethwe i-viscosity ephansi.
Izimbobo zokungenisa umoya ezivamile zingaphakathi kuka-0.05 ukushona, 6 mm ububanzi, futhi i-engeli yokusalungiswa iphakathi kuka-30'-1° futhi ingxenye yomgodi iphakathi kwama-35'-1°30°.
4. Izinga lokushisa elincibilikayo
Ingalinganiswa ngendlela yokujova emoyeni: kusukela ku-210℃ku270℃, kuye ngolwazi olunikezwe umphakeli.
Phuma esihlalweni esingemuva, yenza umjovo womshini wokubumba umjovo ushiye i-channel bushing, bese ubumba ngesandla umjovo wepulasitiki, okuwukubumba komjovo womoya.
5. Izinga lokushisa lomjovo
Umjovo osheshayo ungasetshenziswa, kodwa ukuze ugweme ukucindezeleka okukhulu kwangaphakathi, kungcono ukusebenzisa umjovo wezigaba eziningi, njengokunensa-ushesha kakhulu, njll. Uma ujova izingxenye eziwugqinsi, sebenzisa isivinini esincane.
6. Isikhathi sokuhlala
Uma izinga lokushisa lingu-260°C, isikhathi sokuhlala asikwazi ukudlula imizuzu eyi-10. Uma izinga lokushisa lingu-270°C, isikhathi sokuhlala asikwazi ukudlula imizuzu eyi-8.
I-ZAOGE Film Crusherilungele ukuchoboza izinto ezilahliwe ezihlukahlukene ezithambile neziqinile ezinobukhulu obungu-0.02 ~ 5MM, njengamafilimu e-PP/PE/PVC/PS/GPPS/PMMA, amashidi, namapuleti asetshenziswa ezintweni zokubhala, ukupakisha nezinye izimboni.
Ingasetshenziselwa ukuqoqa, ukuchoboza kanye nokudlulisa izinto ezilahliwe ezinqenqemeni ezikhiqizwe ama-extruder, ama-laminator, imishini yeshidi, nemishini yamapuleti. Isibonelo, izinto ezichotshoziwe zithuthwa yisiphepho esidlulisayo ngepayipi ziyiswe kusihlukanisi sesishingishane, bese ziphonswa kumbobo yesikulufu esingaphandle ngesikulufu sokuphakela ukuze kuhlanganiswe ngokuzenzakalela nezinto ezintsha, ngaleyo ndlela kuzuzwe ukuvikelwa kwemvelo okusheshayo nokusetshenziswa.
Isikhathi sokuthumela: Jul-01-2024
