ABS
Kuchita kwa ABS
ABS imapangidwa ndi ma monomers atatu amankhwala acrylonitrile, butadiene ndi styrene.Kuchokera pamalingaliro a morphology, ABS ndi zinthu zopanda kristalo, zokhala ndi mphamvu zamakina apamwamba komanso "zamphamvu, zolimba, zitsulo" zogwira ntchito bwino.Ndi polymer amorphous, ABS ndi pulasitiki yaumisiri wamba, mitundu yake, yogwiritsidwa ntchito kwambiri, yomwe imadziwikanso kuti "pulasitiki wamba", ABS ndiyosavuta kuyamwa chinyezi, mphamvu yokoka ndi 1.05g/cm3 (yolemera pang'ono kuposa madzi), kuchepa pang'ono. mlingo (0,60%), kukula khola, yosavuta akamaumba processing.
Makhalidwe a ABS makamaka amadalira chiŵerengero cha ma monomers atatu ndi mapangidwe a maselo a magawo awiriwa.Izi zimathandiza kusinthasintha kwakukulu pamapangidwe azinthu, motero zimapanga mazana amitundu yosiyanasiyana ya ABS pamsika.Zida zamtundu wamtunduwu zimapereka mawonekedwe osiyanasiyana, monga kukana kwapakatikati mpaka kukhudzika kwakukulu, kutsika mpaka kutsika kwambiri komanso kupotoza kwa kutentha kwambiri.Zinthu za ABS zimakhala ndi makina abwino kwambiri, mawonekedwe owoneka bwino, kutsika pang'ono, kukhazikika kwabwino kwambiri komanso mphamvu yayikulu.
ABS ndi yopepuka yachikasu granular kapena bead opaque resin, yopanda poizoni, yopanda kukoma, mayamwidwe amadzi otsika, imakhala ndi mawonekedwe abwino akuthupi komanso makina, monga mphamvu zamagetsi zamagetsi, kukana kuvala, kukhazikika kwa mawonekedwe, kukana kwamankhwala ndi gloss pamwamba, komanso yosavuta kukonza. ndi mawonekedwe.Zoyipa zake ndi kukana kwanyengo, kukana kutentha kumakhala kocheperako, komanso kuyaka.
Zotsatira za ABS
ABS ili ndi hygroscopiness yapamwamba komanso kukhudzidwa kwa chinyezi.Iyenera kuumitsidwa bwino ndikutenthedwa isanapangidwe ndi kukonza (kuyanika pa 80 ~ 90C kwa maola osachepera awiri), ndipo chinyezi chimayendetsedwa pansi pa 0.03%.
Kusungunuka kwamphamvu kwa utomoni wa ABS sikukhudzidwa kwambiri ndi kutentha (kosiyana ndi ma resins ena amorphous).Ngakhale kutentha kwa jakisoni wa ABS ndikokwera pang'ono kuposa kwa PS, sikungakhale ndi kutentha kwakukulu ngati PS.The mamasukidwe akayendedwe a ABS sangathe kuchepetsedwa ndi kutentha khungu.The liquidity wa ABS akhoza kusintha poonjezera liwiro wononga kapena jekeseni kuthamanga.General processing kutentha mu 190-235 ℃ ndi koyenera.
Kusungunuka kwa viscosity ya ABS ndi yapakatikati, yokwera kuposa ya PS, HIPS ndi AS, komanso kuthamanga kwa jekeseni (500-1000 bar) kumafunika.
Zinthu za ABS zokhala ndi liwiro lapakati komanso jekeseni wapamwamba zimakhala ndi zotsatira zabwino.(pokhapokha ngati mawonekedwewo ndi ovuta komanso mbali zowonda-khoma zimafuna mlingo wapamwamba wa jekeseni), mankhwalawa ndi osavuta kupanga mizere ya mpweya pakamwa.
ABS akamaumba kutentha ndi mkulu, nkhungu kutentha ake zambiri kusintha pa 25-70 ℃.Popanga zinthu zazikulu, kutentha kwa nkhungu (kutsogolo) kumakhala kokwera pang'ono kuposa nkhungu yosuntha (kumbuyo yakumbuyo) pafupifupi 5 ℃ ndiyoyenera.(Kutentha kwa nkhungu kumakhudza mapeto a zigawo za pulasitiki, kutentha kochepa kumapangitsa kuti pakhale mapeto otsika)
ABS sayenera kukhala mu mbiya yotentha kwambiri (osakwana mphindi 30), apo ayi ndiyosavuta kuwola komanso yachikasu.
Mtundu wofananira wa ntchito
Magalimoto (zowumitsira zida, zitseko zotsekera zida, zovundikira mawilo, mabokosi owonetsera, ndi zina zambiri), mafiriji, zida zamphamvu kwambiri (zowumitsira tsitsi, zosakaniza, makina opangira chakudya, makina otchetcha udzu, ndi zina zotero), makaseti amafoni, makina ojambulira, magalimoto osangalatsa monga monga ngolo za gofu ndi ma jeti ndi zina zotero.
PMMA
Kuchita kwa PMMA
PMMA ndi polima amorphous, omwe amadziwika kuti plexiglass.Kuwonekera bwino kwambiri, kukana kutentha kwabwino (kutentha kwa kutentha kwa 98 ℃), ndi makhalidwe abwino kukana, katundu wake wa sing'anga mphamvu makina, otsika pamwamba kuuma, zosavuta kukanda ndi zinthu zolimba ndi kusiya kuda, poyerekeza ndi PS, si kophweka crack, mphamvu yokoka yeniyeni ya 1.18g/cm3.PMMA ili ndi mawonekedwe owoneka bwino komanso kukana kwanyengo.Kulowa kwa kuwala koyera kumafika mpaka 92%.Zogulitsa za PMMA zimakhala ndi birefringence yochepa kwambiri, makamaka yoyenera kupanga ma disc a kanema.PMMA ili ndi kutentha kwa chipinda.Ndi kuchuluka kwa katundu ndi nthawi, kupsinjika kungayambitse.
Zotsatira za ABS
PMMA zofunika processing ndi okhwima kwambiri, ndi tcheru kwambiri madzi ndi kutentha, pamaso processing kuti ziume mokwanira (analimbikitsa kuyanika zinthu 90 ℃, 2 kwa 4 hours), kusungunuka mamasukidwe ake kukhuthala ndi lalikulu, ayenera kupangidwa pa mkulu (225) -245 ℃) ndi kuthamanga, kufa kutentha mu 65-80 ℃ ndi bwino.PMMA sikhazikika kwambiri, ndipo kuwonongeka kungayambitsidwe ndi kutentha kwakukulu kapena kukhala kwautali pa kutentha kwakukulu.Kuthamanga kwa screw sikuyenera kukhala kwakukulu (60% kapena kupitirira apo), zigawo za PMMA zakuda ndizosavuta kuwoneka "cavity", ziyenera kutenga chipata chachikulu, "kutentha kwa zinthu zochepa, kutentha kwapamwamba, kuthamanga kwapang'onopang'ono" njira ya jekeseni.
Mtundu wofananira wa ntchito
Makampani opanga magalimoto (zida zowunikira nyali, gulu la zida ndi zina zotero), makampani opanga mankhwala (chidebe chosungira magazi ndi zina zotero), ntchito zamafakitale (kanema chimbale, chobalalitsa kuwala), katundu wogula (makapu zakumwa, zolembera ndi zina zotero).
Nthawi yotumiza: 23-11-22