I-Acrylonitrile-butadiene-styrene copolymer (ABS) inezixhobo ezibalaseleyo zombane, ukumelana nokubanda, ukuchasana kweoli, ukuzinza kweekhemikhali, kunye neempawu zempembelelo, kwaye isetyenziswa ngokubanzi kwiinkalo ze-electromechanics, izixhobo zasekhaya kunye nokuthutha.Nangona kunjalo, isalathisi se-oksijini ye-ABS yi-18% kuphela, kwaye inokuqhubeka nokutshisa emva komlilo, okunciphisa iimveliso zayo kwiinkalo ezininzi zesicelo.Ukuze kuphunyezwe umlinganiselo we-flame retardant we-ABS ukuya kwi-UL94 V-0, isixa se-flame retardant esongeziweyo sikhulu ngokubanzi.Iimpawu zemishini yezinto eziphathekayo ziyancipha, kwaye iindleko ziphezulu.
I-Acrylonitrile-butadiene-styrene copolymer (ABS) inezixhobo ezibalaseleyo zombane, ukumelana nokubanda, ukuchasana kweoli, ukuzinza kweekhemikhali, kunye neempawu zempembelelo, kwaye isetyenziswa ngokubanzi kwiinkalo ze-electromechanics, izixhobo zasekhaya kunye nokuthutha.Nangona kunjalo, isalathisi se-oksijini ye-ABS yi-18% kuphela, kwaye inokuqhubeka nokutshisa emva komlilo, okunciphisa iimveliso zayo kwiinkalo ezininzi zesicelo.Ukuze kuphunyezwe umlinganiselo we-flame retardant we-ABS ukuya kwi-UL94 V-0, isixa se-flame retardant esongeziweyo sikhulu ngokubanzi.Iimpawu zemishini yezinto eziphathekayo ziyancipha, kwaye iindleko ziphezulu.
I-Polytetrafluoroethylene (PTFE) inefuthe elihle lokuchasa kwaye isetyenziswe ngokubanzi kwi-PC / ABS e-flame retardant kunye nezinye izinto, kodwa kukho iingxelo ezimbalwa zophando kwi-PTFE kwi-ABS e-flame retardant.I-ABS eqhelekileyo ye-flame retardant kumashishini, ngelixa isungula i-PTFE, ixoxe ngefuthe le-PTFE ekusebenzeni kwe-ABS e-flame retardant.
1. Inxalenye yovavanyo
1.1.Iimathiriyeli ekrwada eziphambili
I-ABS, i-brominated triazine, i-antimony trioxide, i-PTFE, i-antioxidants, i-lubricants, njl.
1.2.Izixhobo eziphambili
I-twin-screw extruder: uhlobo lwe-SHJ-35;umatshini wokubumba inaliti: uhlobo lwe-T80;umatshini wovavanyo we-elektroniki olawulwa yikhompyutha: uhlobo lweCM6104;isixhobo sokulinganisa iqondo lobushushu deformation thermal: 303;thermogravimetric (TG) analyzer: 209C uhlobo.Umhloli wempembelelo ye-Pendulum: Umzekelo we-ZBC-25B;Isixhobo sokunyibilika sokunyibilika (MFR): MPXRZ-40A;Umvavanyi wokutsha othe tyaba kunye nothe nkqo: Imodeli ye-HVR-2.
1.3.Ukulungiselela isampuli
I-ABS eyomileyo kwi-80 ℃ ye-3 ukuya kwiiyure ze-5, emva koko udibanise i-ABS, i-brominated triazine, i-antimony trioxide, i-PTFE, kunye nezinye izongezo ngokufanayo, zinyibilike kwaye zidibanise nge-twin-screw extruder ye-extrusion kunye ne-granulation.Ubushushu be-Extrusion yi-215-225 ℃, isantya se-screw yi-360 r / min;emva koko ivuthelwe kwaye yomiswe kwi-80℃ iiyure ezi-2, emva koko ifakwe kwisampulu eqhelekileyo, ubushushu benaliti yi-200～210℃.
1.4.Uvavanyo lokusebenza
Ukusebenza kokutsha: kuvavanywa ngokwe-UL94;ukusebenza kwe-tensile: kuvavanywa ngokwe-GB/T 1040-1992;ukugoba amandla: kuvavanywa ngokwe-GB/T 9341-2000;amandla empembelelo yenotshi ye-cantilever: ihlolwe ngokwe-GB / T 1843-1996;MFR: ngokwe-GB/T 3682-==2000 uvavanyo, ubushushu 220 ℃, umthwalo 220kg;ubushushu bokuphazamisa ukushisa: uvavanyo ngokwe-GB/T 16341-2004;Uhlalutyo lwe-TG: izinga lokushisa 10. C / min,.Uluhlu lobushushu yi 30 ~ 700 ℃, phantsi kwe-nitrogen emoyeni.
2. Iziphumo kunye nengxoxo
2.1.Isampulu ngaphandle kwe-flame retardant itshisa ngokupheleleyo emva kokuvutha kokuqala, kwaye isiphumo sokubuyiswa komlilo sibi.Xa umlinganiselo othile we-brominated triazine kunye ne-antimony trioxide flame retardant yongezwa, umphumo we-flame retardant uphuculwe ngokucacileyo, kwaye inqanaba lokubuyiswa komlilo lifikelela kwinqanaba le-UL94V-2, kodwa ixesha elivuthayo lide, kwaye i-flame retardant effect ayikabikho. efanelekileyo.Ukongezwa kwe-PTFE kunciphisa kakhulu ixesha elivuthayo lezinto eziphathekayo.Xa i-0.2% ye-PTFE yongezwa, inqanaba le-flame retardant yezinto linyuka ukusuka kwi-V-2 ukuya kwi-V-0.Oku kungenxa yokuba i-PTFE inomlinganiselo ophezulu wokunyibilika (323 ° C), kwaye ayinyibiliki kwiqondo lokushisa lokulungisa izinto, kodwa kulula ukwenza i-fibrillate ukwenza i-fiber network phantsi komxube we-shear force, okunciphisa ukusasazeka komlilo.
2.2.Emva kokongeza i-retardant ye-flame, amandla empembelelo ye-notched yezinto zehla ngokukhawuleza, ngelixa ezinye iimpawu zomatshini zitshintsha kancinci.Ngokwahlukileyo, xa ii-retardants ze-flame kunye ne-PTFE zongezwa ngaxeshanye, ubunzima bezinto eziphathekayo buphuculwe kancinane xa kuthelekiswa nokusetyenziswa kwe-flame retardants yodwa, kwaye njengoko inani le-PTFE linyuka, amandla empembelelo ye-notched yezinto ayanda, enokuba Isakhiwo sothungelwano lwefiber esenziwe yi-PTFE kwizinto eziphathekayo sidlala indima yokuqinisa ukuya kumlinganiselo othile.
2.3.Njengoko inani le-PTFE linyuka, i-MFR yezinto eziphathekayo iyancipha ngokuthe ngcembe.Xa isixa se-PTFE esongeziweyo yi-0.3%, i-MFR ye-flame retardant ABS iyancipha ukusuka kwi-23.1g/10min ukuya kwi-14.5g/10min, ebonisa umphumo we-PTFE kwiipropati zokuhamba kwezinto.Eyona inkulu ibangelwa ikakhulu kubukho be-PTFE fiber-forming material, ethi ithintele ukuhamba kwee-molecule ze-ABS.Ngenxa yolwakhiwo olukhethekileyo olwenziwe yi-PTFE ngexesha lokucutshungulwa, imicu yezinto ezibonakalayo ibonakala idumba ekuphumeni komtya wezinto eziphathekayo, okukhokelela kwimicu yemathiriyeli engqindilili kunye nokucotha kwepelletizing.Ukukhutshwa kwezinto ngaphandle kwe-PTFE kuqhelekile.
2.4.Uhlalutyo lwe-TG kunye ne-DTG yezinto
Kukho incopho enye kuphela thermal ilahleko ubunzima kwinkqubo thermal ilahleko ubunzima of ABS esulungekileyo, kunye neencopho ezimbini ilahleko ubunzima thermal kubonakala kwinkqubo thermal ubunzima ilahleko idangatye retardant ABS.Incopho yokuqala ibangelwa ukubola kwe-flame retardant, kwaye i-peak yesibini ibangelwa ukuchithwa kwe-ABS.Ngokudityaniswa kwe-PTFE, iqondo lokushisa eliphezulu lokunciphisa ubunzima be-thermal (427 ° C) ye-ABS yi-1.8 ° C ephezulu kune-ABS ecocekileyo (428.8 ° C), kodwa i-peak differential weight loss rate (izinga lokulahleka kobushushu obuninzi) ( I-11.7% / min) kuphela I-peak differential thermal loss loss rate of pure ABS (18.8% / min) yi-62.2%, eyi-7.9% ephantsi kune-peak differential thermal loss loss rate (12.7% / min) yesampuli 28 ngaphandle I-PTFE yongeziwe.Ukongezwa kwe-PTFE kunokuphucula ukusebenza kwe-flame retardant yezinto.
I-Bromotriazine kunye ne-antimony trioxide ziyi-halogen-antimony i-retardants ye-flame retardants, engatshintshiyo kuphela i-gas isigaba se-flame retardant reaction kodwa iphinde iguqule ukusabela kokuthotywa kwe-thermal kwi-condensed phase.Izinga le-carbon eseleyo ye-ABS ecocekileyo kwi-700 ℃ yi-1.2%, kunye ne-ABS ye-flame retardant kunye ne-brominated triazine kunye ne-antimony trioxide yongezwa.Umlinganiselo wekhabhoni oshiyekileyo kwi-700℃ yi-3.5%.Ukuqulunqwa kwe-carbon layer kunceda ukunyusa ukuchasana kwezinto.Ukungabi namandla.Ngexesha elifanayo, i-carbon rate eseleyo kwi-700 ° C kunye ne-PTFE eyongeziweyo yi-3.6%, ebonisa ukuba i-PTFE ayiphumelelanga ukukhuthaza ukubunjwa kwekhabhoni.Ukongezwa kwe-PTFE kunokukhuthaza ukwakheka kwekhabhoni exineneyo kunye nokugquma okungcono kunye nezithintelo ze-oksijini, ngaloo ndlela Isetyenziswa nge-halogen-antimony flame retardant, i-flame retardant effect igqwesileyo.
3. Isiphelo
3.1.Ukongezwa kwe-PTFE kunokunciphisa ngakumbi inqanaba lokulahleka kobunzima be-thermal ye-ABS ye-flame retardant, ukunciphisa kakhulu ixesha elivuthayo lezinto eziphathekayo, kunye nokuphucula ibakala lokuyeka ukukhanya kwezinto.
3.2.Ukongezwa kwe-PTFE kunempembelelo encinci kwiipropati ze-mechanical of flame retardant ABS, kwaye kwinqanaba elithile liphucula ukuqina kwezinto.
3.3.I-PTFE inefuthe elibonakalayo ekusebenzeni kokwenziwa kwezixhobo ze-ABS ze-flame retardant, kwaye umthamo kufuneka ulungelelaniswe ngokweemfuno ngexesha lokusetyenziswa.
Ixesha lokuposa: Jun-11-2020