Busa gyare-gyare shine tsarin da aka samar da labaran ta hanyar narkakkar guduro zuwa Žfill a mold cavity da ciwon da ake so siffar da girma. Matsi gyare-gyare ne mafi tsufa dabara don samar da polymer kayayyakin, kuma aka yafi amfani da thermosets.
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Busa gyare-gyare
Busa gyare-gyare shine tsarin da ake samar da labarai ta hanyar narkakkar guduro zuwa Žcika wani rami mai siffar da ake so da girma.Ana yin gyare-gyaren kwalabe na abubuwan sha da sauran abubuwan ruwa.Mafi mahimmancin bambance-bambancen tsari guda biyu sune gyare-gyaren bugun jini da gyare-gyaren allura.An manne gunkin a tsakanin ɓangarorin gyare-gyare guda biyu kuma yana ciki ne ta hanyar matsa lamba na ciki don ɗaukar siffar ƙashin ƙura, wanda yawanci ana sanyaya.A ƙarshe, ƙasidar da aka kafa ta solidiŽ es sakamakon sanyaya kuma an buɗe ƙirar don fitar da labarin ba tare da lalacewa ba.Dangane da kwanciyar hankali na thermal na kayan, tsarin extrusion na iya zama mai ci gaba ko tsaka-tsaki.Tsare-tsare masu tsaka-tsaki na iya amfani da skru masu juyawa waɗanda ke aiki azaman raguna, daidai da yadda ake yin allura.
Gyaran busa allura mataki ne na mataki biyu.A mataki na farko na Žfir, ana allurar filastik a cikin rami inda aka ƙera preform.Ana canza tsarin preform ɗin zuwa ƙirar busa don a fiation.Yin gyare-gyaren busa allura yana ba da fa'idodi na ingantaccen sarrafa juzu'i, kawar da tarkace da gyare-gyaren zaren kafin busawa.An fi son yin gyare-gyaren busa don ƙunshe-ƙunshe masu tsayi mai tsayi/diamita da kuma samfurori masu hannaye.
Polyethylene terephthalate ko PET shine polymer da aka fi amfani dashi a cikin yin gyare-gyaren allura, don abubuwan sha da kwalabe na ruwa.Ana amfani da gyare-gyaren busa don samar da kwalaben PET na ingantattun kaddarorin jiki.A cikin wannan tsari, shimfiɗawa yana haifar da samuwar ƙananan lu'ulu'u na lamellar.Waɗannan lu'ulu'u suna haifar da ƙarin samfurori masu fa'ida da ƙarfi fiye da waɗanda aka samar ba tare da busawa ba, waɗanda ke da lu'ulu'u na spherulitic.
Matsi gyare-gyare
Matsi gyare-gyaren ita ce mafi tsohuwar dabara don samar da samfuran polymer, kuma galibi ana amfani dashi don thermosets.A cikin wannan tsari ana danna fili a cikin ƙirar ta ɗumbin faranti na latsawa na hydraulic.Wannan tsarin yana kama da yin tambarin takarda.Yin gyare-gyaren allura na polymers ya maye gurbin gyare-gyaren matsawa don wasu polymers, saboda fa'idodin sarrafa kayan aiki da sarrafa kansa.Koyaya, gyare-gyaren matsawa yana da fa'ida a cikin sarrafa kayan aikin da aka ƙarfafa.Sakamakon matsakaicin matakan nakasawa da damuwa da ke cikin gyare-gyaren gyare-gyare, filaye masu ƙarfafawa ba su lalace ba.Maɗaukakin fiber mai yawa da tsayin Žfibres ana iya haɗa su cikin samfuran da aka ƙera matsi
Lokacin aikawa: Janairu-01-2017