Acrylonitrile-butadiene-styrene copolymer (ABS) e na le lisebelisoa tse ntle tsa motlakase, ho hanyetsa serame, ho hanyetsa oli, botsitso ba lik'hemik'hale, le thepa ea tšusumetso, 'me e sebelisoa haholo masimong a electromechanics, lisebelisoa tsa lapeng le lipalangoang.Leha ho le joalo, index ea oksijene ea ABS ke 18% feela, 'me e ka tsoela pele ho tuka ka mor'a mollo, o fokotsang lihlahisoa tsa eona libakeng tse ngata tsa kopo.E le ho fihlela tekanyo e thibelang lelakabe ea ABS ho UL94 V-0, palo ea "flame retardant" e kenyelletsoeng hangata e kholo.Thepa ea mechine ea thepa e fokotsehile, 'me litšenyehelo li phahame.
Acrylonitrile-butadiene-styrene copolymer (ABS) e na le lisebelisoa tse ntle tsa motlakase, ho hanyetsa serame, ho hanyetsa oli, botsitso ba lik'hemik'hale, le thepa ea tšusumetso, 'me e sebelisoa haholo masimong a electromechanics, lisebelisoa tsa lapeng le lipalangoang.Leha ho le joalo, index ea oksijene ea ABS ke 18% feela, 'me e ka tsoela pele ho tuka ka mor'a mollo, o fokotsang lihlahisoa tsa eona libakeng tse ngata tsa kopo.E le ho fihlela tekanyo e thibelang lelakabe ea ABS ho UL94 V-0, palo ea "flame retardant" e kenyelletsoeng hangata e kholo.Thepa ea mechine ea thepa e fokotsehile, 'me litšenyehelo li phahame.
Polytetrafluoroethylene (PTFE) e na le phello e ntle ea ho thibela ho theoha 'me e' nile ea sebelisoa haholo ho PC / ABS e thibelang malakabe le lisebelisoa tse ling, empa ho na le litlaleho tse fokolang tsa lipatlisiso ka PTFE ka ABS e thibelang malakabe.E tloaelehileng ea ABS flame retardant indastering, ha e ntse e hlahisa PTFE, e buisane ka phello ea PTFE ts'ebetsong ea ABS e thibelang malakabe.
1. Karolo ea teko
1.1.Lisebelisoa tse tala tse ka sehloohong
ABS, brominated triazine, antimony trioxide, PTFE, antioxidants, lubricant, joalo-joalo.
1.2.Lisebelisoa tse ka sehloohong
Twin-screw extruder: mofuta oa SHJ-35;mochini oa ho etsa ente: mofuta oa T80;mochine o laoloang ke k'homphieutha oa tlhahlobo ea bokahohleng oa elektronike: mofuta oa CM6104;sesebelisoa sa ho lekanya mocheso deformation mocheso: 303;mohlahlobi oa thermogravimetric (TG): mofuta oa 209C.Mohloli oa phello ea pendulum: Mohlala oa ZBC-25B;Sekhahla sa ho qhibiliha (MFR) sesebelisoa: MPXRZ-40A;Teko ea ho tuka e tšekaletseng le e emeng: Mohlala oa HVR-2.
1.3.Ho lokisetsa mohlala
Dry ABS ho 80 ℃ bakeng sa lihora tse 3 ho isa ho tse 5, ebe u kopanya ABS, triazine ea brominated, antimony trioxide, PTFE, le li-additives tse ling ka mokhoa o ts'oanang, qhibiliha le ho kopanya ka "twin-screw extruder" bakeng sa extrusion le granulation.Mocheso oa Extrusion ke 215-225 ℃, lebelo la screw ke 360 r / min;ebe e butsoeloa ebe e omisoa ka 80℃ bakeng sa lihora tse 2, ebe e kenngoa sampoleng e tloaelehileng, mocheso oa ente ke 200℃ 210℃.
1.4.Teko ea ts'ebetso
Ts'ebetso ea ho tuka: e lekoa ho latela UL94;tshebetso tensile: lekoa ho ea ka GB/T 1040-1992;matla a kobang: lekoa ho latela GB/T 9341-2000;matla a tšusumetso ea notch ea cantilever: e lekoa ho latela GB/T 1843-1996;MFR: ho latela GB/T 3682-==2000 teko, mocheso 220 ℃, mojaro 220kg;mocheso o sothang mocheso: teko ho latela GB/T 16341-2004;Tlhahlobo ea TG: tekanyo ea mocheso 10. C / min,.Boemo ba mocheso ke 30 ~ 700 ℃, tlas'a sepakapaka sa naetrojene.
2. Liphetho le lipuisano
2.1.Mohlala o se nang lelakabe la mollo o tuka ka ho feletseng ka mor'a ho khantša pele, 'me phello e thibelang lelakabe e fokola.Ha palo e itseng ea brominated triazine le antimony trioxide flame retardant e eketsoa, ho hlakile hore phello e thibelang lelakabe e ntlafatsoa, 'me boemo ba lelakabe la lelakabe bo fihla boemong ba UL94V-2, empa nako ea ho chesa e telele,' me phello e thibelang lelakabe e ntse e le sieo. e loketseng.Ho eketsoa ha PTFE ho khutsufatsa haholo nako e tukang ea thepa.Ha 0.2% PTFE e eketsoa, boemo ba lelakabe bo thibelang mollo bo eketseha ho tloha ho V-2 ho ea ho V-0.Lebaka ke hore PTFE e na le ntlha e phahameng ea ho qhibiliha (323 ° C), 'me ha e qhibilihe mocheso oa thepa ea thepa, empa ho bonolo ho fibrillate ho etsa marang-rang a fiber tlas'a matla a ho kopanya a ho kuta, e leng ho fokotsa ho ata ha lelakabe.
2.2.Ka mor'a ho eketsa lelakabe la mollo, matla a ts'ebetso ea notched a theoha haholo, ha lisebelisoa tse ling tsa mechine li fetoha hanyenyane.Ka lehlakoreng le leng, ha li-retardants tsa lelakabe le PTFE li eketsoa ka nako e le 'ngoe, ho tiea ha thepa ho ntlafatsoa hanyenyane ha ho bapisoa le tšebeliso ea li-flame retardants feela,' me ha palo ea PTFE e ntse e eketseha, matla a ts'ebetso ea notched ea thepa e boetse e eketseha, e ka 'nang ea e-ba Sebopeho sa marang-rang sa fiber se entsoeng ke PTFE ka thepa se phetha karolo ea ho matlafatsa ho isa tekanyong e itseng.
2.3.Ha palo ea PTFE e ntse e eketseha, MFR ea thepa e fokotseha butle-butle.Ha palo ea PTFE e ekelitsoeng ke 0.3%, MFR ea ABS e thibelang lelakabe e fokotseha ho tloha 23.1g/10min ho ea ho 14.5g/10min, e bontšang phello ea PTFE ho thepa ea phallo ea thepa.E kholoanyane e bakoa haholo ke ho ba teng ha PTFE fiber-forming material, e sitisang ho phalla ha limolek'hule tsa ABS.Ka lebaka la sebopeho se ikhethileng se entsoeng ke PTFE nakong ea ts'ebetso, likhoele tsa thepa li bonahala li kokomoha ha li tsoa, 'me li baka likhoele tse teteaneng le pelletizing butle.Extrusion ea thepa ntle le PTFE ke ntho e tloaelehileng.
2.4.TG le DTG tlhahlobo ea lisebelisoa
Ho na le tlhōrō e le 'ngoe feela ea ho lahleheloa ke boima ba' mele nakong ea ho lahleheloa ke boima ba mocheso oa ABS e hloekileng, 'me litlhōrō tse peli tsa ho lahleheloa ke boima ba' mele li hlaha ts'ebetsong ea tahlehelo ea boima ba 'mele ea ABS e thibelang malakabe.Tlhōrō ea pele e bakoa ke ho senyeha ha lelakabe la mollo, 'me tlhōrō ea bobeli e bakoa ke ho senyeha ha ABS.Ka ho eketsoa ha PTFE, mocheso o phahameng oa mocheso oa mocheso oa mocheso (427 ° C) oa ABS ke 1.8 ° C o phahameng ho feta oa ABS e hloekileng (428.8 ° C), empa tlhōrō ea phapang ea mocheso oa mocheso oa boima ba 'mele (sekhahla sa tahlehelo ea mocheso o boima) ( 11.7% / min) ke feela The tlhōrō ea phapang ea mocheso oa tahlehelo ea boima ba 'mele oa ABS e hloekileng (18.8% / min) ke 62.2%, e leng 7.9% e tlase ho feta tekanyo ea tlhōrō ea ho lahleheloa ke boima ba mocheso (12.7% / min) ea sampole 28 ntle le PTFE e ekelitsoe.Ho eketsoa ha PTFE ho ka ntlafatsa ts'ebetso e thibelang lelakabe la thepa.
Bromotriazine le antimony trioxide ke tse tloaelehileng tsa halogen-antimony flame retardants, tse sa fetoleng feela mokhoa oa khase ea khase ea khase empa hape li fetola karabelo ea ho senyeha ha mocheso oa mohato o khutsitseng.Sekhahla se setseng sa khabone ea ABS e hloekileng ho 700 ℃ ke 1.2%, 'me ABS e thibelang lelakabe e nang le brominated triazine le antimony trioxide ea eketsoa.Sekhahla sa khabone se setseng ho 700 ℃ ke 3.5%.Ho thehoa ha lesela la carbon ho boetse ho thusa ho eketsa khanyetso ea thepa.Ignitability.Ka nako e ts'oanang, sekhahla sa khabone se setseng ho 700 ° C le PTFE e ekelitsoeng e ne e le 3.6%, e bontšang hore PTFE e hlōlehile ho khothalletsa ho thehoa ha carbon.Ho eketsoa ha PTFE ho ka 'na ha khothalletsa sebopeho sa lesela la denser carbon le li-insulation tse molemo le lithibelo tsa oksijene, kahoo E sebelisoa ka halogen-antimony flame retardant, phello e thibelang lelakabe e ntle haholo.
3. Qetello
3.1.Ho eketsoa ha PTFE ho ka fokotsa tlhōrō ea tlhōrō ea boima ba 'mele ea ho lahleheloa ke lelakabe la ABS, ho fokotsa haholo nako ea ho chesa thepa, le ho ntlafatsa kereiti e thibelang mollo oa thepa.
3.2.Ho eketsoa ha PTFE ho na le phello e fokolang ho thepa ea mochine oa ABS e thibelang lelakabe, 'me ho isa bohōleng bo itseng ho ntlafatsa ho tiea ha thepa.
3.3.PTFE e na le phello e kholo ts'ebetsong ea ts'ebetso ea lisebelisoa tsa ABS tse thibelang malakabe, 'me litekanyetso li lokela ho fetoloa ho latela litlhoko nakong ea tšebeliso.
Nako ea poso: Jun-11-2020