I-Acrylonitrile-butadiene-styrene copolymer (ABS) inezinto ezinhle kakhulu zikagesi, ukumelana nokubanda, ukumelana nowoyela, ukuzinza kwamakhemikhali, kanye nezakhiwo ezinomthelela, futhi isetshenziswa kabanzi emkhakheni we-electromechanics, izinto zikagesi zasendlini nezokuthutha.Kodwa-ke, inkomba ye-oxygen ye-ABS i-18% kuphela, futhi ingaqhubeka ivutha ngemva komlilo, okunciphisa imikhiqizo yayo emikhakheni eminingi yohlelo lokusebenza.Ukuze kuzuzwe isilinganiso sokubuyiswa komlilo kwe-ABS kuya ku-UL94 V-0, inani le-flame retardant elingeziwe ngokuvamile likhulu.Izakhiwo zemishini yezinto ezibonakalayo ziyancipha, futhi izindleko ziphakeme.
I-Acrylonitrile-butadiene-styrene copolymer (ABS) inezinto ezinhle kakhulu zikagesi, ukumelana nokubanda, ukumelana nowoyela, ukuzinza kwamakhemikhali, kanye nezakhiwo ezinomthelela, futhi isetshenziswa kabanzi emkhakheni we-electromechanics, izinto zikagesi zasendlini nezokuthutha.Kodwa-ke, inkomba ye-oxygen ye-ABS i-18% kuphela, futhi ingaqhubeka ivutha ngemva komlilo, okunciphisa imikhiqizo yayo emikhakheni eminingi yohlelo lokusebenza.Ukuze kuzuzwe isilinganiso sokubuyiswa komlilo kwe-ABS kuya ku-UL94 V-0, inani le-flame retardant elingeziwe ngokuvamile likhulu.Izakhiwo zemishini yezinto ezibonakalayo ziyancipha, futhi izindleko ziphakeme.
I-Polytetrafluoroethylene (PTFE) inomphumela omuhle wokunqanda ukuwisa futhi isetshenziswe kakhulu ku-PC/ABS ebuyisela amalangabi nezinye izinto zokwakha, kodwa kunemibiko embalwa yocwaningo nge-PTFE ku-ABS ekhangayo.I-ABS flame retardant evamile embonini, ngenkathi yethula i-PTFE, ixoxe ngomthelela we-PTFE ekusebenzeni kwe-ABS ye-flame retardant.
1. Ingxenye yokuhlola
1.1.Izinto zokusetshenziswa eziyinhloko
I-ABS, i-brominated triazine, i-antimony trioxide, i-PTFE, ama-antioxidants, amafutha okugcoba, njll.
1.2.Imishini eyinhloko
I-Twin-screw extruder: uhlobo lwe-SHJ-35;umshini wokubumba umjovo: uhlobo lwe-T80;umshini wokuhlola we-elekthronikhi olawulwa ngekhompyutha: uhlobo lwe-CM6104;ithuluzi lokulinganisa izinga lokushisa lokuguquguquka okushisayo: 303;i-thermogravimetric (TG) analyzer: 209C uhlobo.Umhloli womthelela we-Pendulum: Imodeli ZBC-25B;Ithuluzi le-Melt flow rate (MFR): MPXRZ-40A;Isihloli sokuvutha esivundlile nesiqondile: Imodeli ye-HVR-2.
1.3.Ukulungiselela isampula
Yomisa i-ABS ku-80℃ amahora angu-3 kuya kwangu-5, bese uxuba i-ABS, i-brominated triazine, i-antimony trioxide, i-PTFE, nezinye izithasiselo ngokufana, ncibilikisa futhi uhlanganise nge-twin-screw extruder ukuze uthole i-extrusion kanye ne-granulation.Izinga lokushisa le-Extrusion lingu-215-225 ℃, isivinini se-screw ngu-360 r/min;bese ishaywa bese yomiswa ku-80℃ amahora angu-2, bese ijova kusampula evamile, izinga lokushisa lomjovo lingu-200℃ 210℃.
1.4.Ukuhlolwa kokusebenza
Ukusebenza komlilo: kuhlolwe ngokusho kwe-UL94;ukusebenza okuqinile: kuhlolwe ngokusho kwe-GB/T 1040-1992;amandla okugoba: ihlolwe ngokusho kwe-GB/T 9341-2000;amandla omthelela we-cantilever notch: ihlolwe ngokusho kwe-GB/T 1843-1996;I-MFR: ngokusho kwe-GB/T 3682-==2000 test, izinga lokushisa 220 ℃, umthwalo 220kg;ukushisa okuhlanekezela ukushisa: ukuhlolwa ngokusho kwe-GB/T 16341-2004;Ukuhlaziywa kwe-TG: izinga lokushisa 10. C/min,.Izinga lokushisa lingama-30 ~ 700 ℃, ngaphansi komkhathi we-nitrogen.
2. Imiphumela kanye nengxoxo
2.1.Isampula elingenayo i-flame retardant lisha ngokuphelele ngemva kokuthungela kokuqala, futhi umphumela we-flame retardant mubi.Uma inani elithile le-brominated triazine ne-antimony trioxide flame retardant lengezwa, umphumela we-flame retardant ngokusobala uthuthukisiwe, futhi izinga lokubuyiswa komlilo lifinyelela izinga le-UL94V-2, kodwa isikhathi sokuvutha siside, futhi umphumela we-flame retardant awukakabi njalo. ekahle.Ukwengezwa kwe-PTFE kunciphisa kakhulu isikhathi sokushiswa kwento.Lapho u-0.2% we-PTFE wengezwa, izinga le-flame retardant lezinto liyakhuphuka lisuka ku-V-2 liye ku-V-0.Lokhu kungenxa yokuthi i-PTFE inezinga eliphezulu lokuncibilika (323°C), futhi ayincibiliki ezingeni lokushisa lokucubungula impahla, kodwa kulula ukuyifaka i-fibrillate ukwenza inethiwekhi yefiber ngaphansi kwamandla okugunda okuxutshwa, okunciphisa ukusabalala komlilo.
2.2.Ngemva kokwengeza i-retardant yomlilo, amandla omthelela we-notched wezinto ezibonakalayo ehla kakhulu, kuyilapho ezinye izici zomshini zishintsha kancane.Ngokuphambene, lapho ama-flame retardants kanye ne-PTFE engezwa ngesikhathi esifanayo, ukuqina kwento kuthuthukiswa kancane uma kuqhathaniswa nokusetshenziswa kwama-flame retardants kuphela, futhi njengoba inani le-PTFE likhula, amandla omthelela we-notched wento nawo ayanda, okungase kube Isakhiwo senethiwekhi yefayibha esakhiwe yi-PTFE endabeni idlala indima yokuqinisa ngokwezinga elithile.
2.3.Njengoba inani le-PTFE likhula, i-MFR yezinto ezibonakalayo iyancipha kancane kancane.Lapho inani le-PTFE elingeziwe lingu-0.3%, i-MFR ye-ABS evimbela ilangabi yehla isuka ku-23.1g/10min iye ku-14.5g/10min, okubonisa umphumela we-PTFE kuzakhiwo zokugeleza zezinto.Enkulu ibangelwa ikakhulukazi ukuba khona kwe-PTFE fiber-forming material, evimbela ukuhamba kwama-molecule e-ABS.Ngenxa yesakhiwo esikhethekile esakhiwe yi-PTFE ngesikhathi sokucubungula, amapheshana ezinto ezibonakalayo abonakala akhukhumala lapho kuphuma umugqa wezinto ezibonakalayo, okuholela emicu yempahla eminyene kanye nokuhamba kancane kwe-pelletizing.Ukukhishwa kwezinto ngaphandle kwe-PTFE kuvame kakhulu.
2.4.Ukuhlaziywa kwe-TG ne-DTG kwezinto zokwakha
Kukhona inani eliphakeme elilodwa kuphela lokulahlekelwa kwesisindo esishisayo ohlelweni lokulahlekelwa kwesisindo esishisayo se-ABS ehlanzekile, futhi iziqongo ezimbili zokulahlekelwa kwesisindo esishisayo zivela ohlelweni lokulahlekelwa kwesisindo esishisayo se-ABS e-flame retardant.Ukuphakama kokuqala kubangelwa ukubola kwe-flame retardant, futhi ukuphakama kwesibili kubangelwa ukubola kwe-ABS.Ngokungezwa kwe-PTFE, izinga lokushisa eliphakeme lokuncipha kwesisindo esishisayo (427°C) le-ABS liphakeme ngo-1.8°C kunalelo le-ABS emsulwa (428.8°C), kodwa izinga eliphakeme lomehluko wesisindo esishisayo (isilinganiso sokulahlekelwa ukushisa okukhulu) ( I-11.7%/min) kuphela Izinga eliphakeme lokuhluka kwesisindo esishisayo se-ABS emsulwa (18.8%/min) lingu-62.2%, eliphansi ngo-7.9% kunezinga eliphakeme lokuhluka kwesisindo esishisayo (12.7%/min) lesampula 28 ngaphandle I-PTFE yengeziwe.Ukwengezwa kwe-PTFE kungathuthukisa ukusebenza kwe-flame retardant kwento.
I-Bromotriazine kanye ne-antimony trioxide ziyizinqamuli zomlilo ze-halogen-antimony ezijwayelekile, ezingashintshi nje kuphela ukusabela kwe-gas retardant flame kodwa futhi ezishintsha ukusabela kokuwohloka kokushisa kwesigaba esijiyile.Izinga lekhabhoni eliyinsalela le-ABS emsulwa ku-700 ℃ ngu-1.2%, futhi i-ABS ye-flame retardant ene-brominated triazine ne-antimony trioxide iyengezwa.Izinga lekhabhoni elisele ku-700 ℃ liyi-3.5%.Ukwakheka kwe-carbon layer nakho kusiza ekwandiseni ukumelana kwezinto.Ukungabi namandla.Ngesikhathi esifanayo, izinga lekhabhoni elisele ku-700 ° C ne-PTFE engeziwe lalingu-3.6%, okubonisa ukuthi i-PTFE yehlulekile ukukhuthaza ukwakheka kwekhabhoni.Ukwengezwa kwe-PTFE kungase kukhuthaze ukwakheka kongqimba lwekhabhoni eminyene kanye nokwahlukanisa okungcono kanye nezithiyo ze-oksijini, ngaleyo ndlela Kusetshenziswa nge-halogen-antimony flame retardant, umphumela we-flame retardant muhle kakhulu.
3. Isiphetho
3.1.Ukwengezwa kwe-PTFE kungaqhubeka nokunciphisa izinga eliphezulu lokulahlekelwa kwesisindo esishisayo se-ABS ye-flame retardant, kunciphise kakhulu isikhathi esivuthayo sezinto ezibonakalayo, futhi kuthuthukise ibanga elivimbela ilangabi lezinto ezibonakalayo.
3.2.Ukwengezwa kwe-PTFE kunomphumela omncane ezicini zemishini ye-ABS ye-flame retardant, futhi ngokwezinga elithile kuthuthukisa ukuqina kwento.
3.3.I-PTFE inomphumela obalulekile ekucubunguleni ukusebenza kwezinto ze-ABS ze-flame retardant, futhi umthamo kufanele ulungiswe ngokuya ngezidingo ngesikhathi sokusetshenziswa.
Isikhathi sokuthumela: Jun-11-2020