Polystyrene ndi imodzi mwamapulasitiki omwe amagwiritsidwa ntchito kwambiri.Polystyrene yowonjezera, thermoplastic, imasungunuka ikatenthedwa ndipo imakhala yolimba ikazizira.Ili ndi kutchinjiriza kwabwino kwambiri komanso kosatha kwamafuta, kubisala kwapadera komanso kukana kugwedezeka, kutsutsa kukalamba komanso kutsekereza madzi, kotero yakhala ikugwiritsidwa ntchito kwambiri m'magawo osiyanasiyana monga zomangamanga, zonyamula, zamagetsi ndi zamagetsi, zombo, magalimoto ndi ndege, zida zokongoletsa, ndi kumanga nyumba.amagwiritsidwa ntchito kwambiri.Zoposa 50% mwazo ndi zotengera zamagetsi ndi zamagetsi, mabokosi a nsomba ndi zinthu zaulimi ndi zosungira zina zatsopano, zomwe zimathandizira kwambiri miyoyo yathu.
EPS kupanga nthunzi - njira yodziwika bwino pamakampani
Nthawi zambiri njira yopangira EPS imaphatikizapo masitepe otsatirawa: kutulutsa thovu → kuchiritsa → kuumba.Kuwunikira koyambirira ndikuyika mikanda ya EPS mu mbiya yamakina omwe akuyaka, ndikuwotcha ndi nthunzi mpaka itafewera.Wotulutsa thovu (kawirikawiri 4-7% pentane) wosungidwa mu mikanda ya EPS imayamba kuwira ndi kusungunuka.Mpweya wosinthidwa wa pentane umawonjezera kupanikizika mkati mwa mikanda ya EPS, ndikupangitsa kuti iwonjezeke.Mkati mwa liwiro lokhomera, kuchuluka kwa galasi kapena gawo la galasi lofunikira litha kupezeka posintha kutentha kwa chisanachitike, kupanikizika kwamatsenga, kuchuluka kwa chakudya, etc.
Zomwe zangopangidwa kumene thovu particles ndi zofewa ndi inelastic chifukwa volatilization wa thovu wothandizila ndi condensation ya otsala thovu wothandizila, ndipo mkati ndi mu dziko vacuum ndi lofewa ndi inelastic.Chifukwa chake, payenera kukhala nthawi yokwanira kuti mpweya ulowe mu ma micropores mkati mwa tinthu tating'onoting'ono tomwe titha kuwongolera zovuta zamkati ndi zakunja.Pa nthawi yomweyo, amalola Ufumuyo thovu particles kusokoneza chinyezi ndi kuthetsa malo amodzi magetsi mwachibadwa anasonkhana ndi kukangana kwa thovu particles.Njirayi imatchedwa kuchiritsa, komwe nthawi zambiri kumatenga maola 4-6.Mikanda yowonjezedwa komanso yowuma imasamutsidwa ku nkhungu, ndipo nthunzi imawonjezedwanso kuti mikandayo ikhale yogwirizana, kenako itakhazikika ndikugwetsedwa kuti ipeze chinthu chokhala ndi thovu.
Zitha kupezeka kuchokera kuzomwe zili pamwambapa kuti nthunzi ndi gwero lofunika kwambiri lamafuta pakuwumba thovu la EPS.Koma kutentha kwa nthunzi ndi kuziziritsa kwa nsanja yamadzi ndizofunikira kwambiri kugwiritsa ntchito mphamvu komanso kutulutsa mpweya wa kaboni popanga.Kodi pali njira ina yowonjezera mphamvu yophatikizira thovu popanda kugwiritsa ntchito nthunzi?
Electromagnetic wave radio frequency melting, Gulu la Kurt Esa (lomwe tsopano limatchedwa "Kurt") waku Germany adapereka yankho.
Ukadaulo wosinthawu komanso upangiri wachitukuko umasiyana ndi chikhalidwe cha nthunzi, chomwe chimagwiritsa ntchito mafunde a wailesi kutenthetsa.Kutentha kwawayilesi ndi njira yotenthetsera yomwe imadalira chinthucho kuti chitenge mphamvu zamawayilesi ndikuchisintha kukhala mphamvu ya kutentha, kuti thupi lonse litenthe nthawi imodzi.Maziko a kuzindikira kwake ndi dielectric alternating field.Kupyolera mu kayendedwe kapamwamba kamene kamabwerezabwereza kwa ma molekyulu a dipole mkati mwa thupi lotentha, "kutentha kwamkati kwamkati" kumapangidwa kuti awonjezere kutentha kwa zinthu zotentha.Popanda njira iliyonse yopangira kutentha, mkati ndi kunja kwa zinthu zimatha kutenthedwa.Kutentha nthawi imodzi ndi kutenthetsa panthawi imodzi, kuthamanga kwachangu kumakhala kofulumira komanso kofanana, ndipo cholinga chotenthetsera chikhoza kutheka kokha ndi kachigawo kakang'ono kapena magawo khumi a mphamvu zogwiritsira ntchito mphamvu zachikhalidwe.Chifukwa chake, njira yosokonezayi ndiyoyenera makamaka pokonza mikanda yokulitsidwa yokhala ndi ma polar molecular.Pochiza zinthu zopanda polar kuphatikiza mikanda ya EPS, ndikofunikira kugwiritsa ntchito zowonjezera zoyenera.
Nthawi zambiri, ma polima amatha kugawidwa kukhala ma polima a polar ndi ma polima omwe si a polar, koma njira yogawa iyi ndi yodziwika bwino komanso yosavuta kutanthauzira.Pakalipano, ma polyolefins (polyethylene, polystyrene, etc.) amatchedwa ma polima omwe si a polar, ndipo ma polima okhala ndi magulu a polar mumzere wam'mbali amatchedwa ma polima a polar.Kawirikawiri, zikhoza kuweruzidwa malinga ndi momwe magulu ogwira ntchito pa polima, monga ma polima okhala ndi magulu a amide, magulu a nitrile, magulu a ester, halogens, ndi zina zotero ndi polar, pamene polyethylene, polypropylene ndi polystyrene Palibe magulu a polar pa unyolo equimolecular, kotero polima nayenso si polar.
Ndiko kunena kuti, kupanga ndondomeko ya electromagnetic wave radio frequency kusungunuka kumangofunika magetsi ndi mpweya, ndipo sikuyenera kukhazikitsa dongosolo la nthunzi kapena chipangizo chozizira chamadzi, chomwe chiri chosavuta komanso chosavuta, ndikupulumutsa mphamvu ndikuteteza chilengedwe. .Poyerekeza ndi kupanga pogwiritsa ntchito nthunzi, imatha kusunga mphamvu 90%.Pochotsa kufunika kogwiritsa ntchito nthunzi ndi madzi, kugwiritsa ntchito Kurtz WAVE FOAMER kungapulumutse malita 4 miliyoni a madzi pachaka, omwe ndi ofanana ndi kumwa madzi pachaka kwa anthu osachepera 6,000.
Kuphatikiza pa kupulumutsa mphamvu komanso kuteteza chilengedwe, kusungunuka kwa ma radio ma frequency a electromagnetic wave kumathanso kupanga zinthu za thovu zapamwamba kwambiri.Kungogwiritsa ntchito mafunde a electromagnetic pama frequency angapo kungatsimikizire kusungunuka kwabwino komanso kupanga tinthu ta thovu.Kawirikawiri, zofunikira zokhazikika za valve ya nthunzi zimakhala zapamwamba kwambiri pogwiritsa ntchito ndondomeko ya nthunzi yachikhalidwe, mwinamwake zidzachititsa kuti mankhwalawo achepetse ndikukhala ochepa kusiyana ndi kukula komwe kunakonzedweratu pambuyo pozizira.Mosiyana ndi kuumba kwa nthunzi, kuchuluka kwa zinthu zomwe zimapangidwa ndi ma electromagnetic wave radio frequency kusungunula kumachepetsedwa kwambiri, kukhazikika kwa mawonekedwe kumakhala bwino kwambiri, komanso kuyamwa kwa tinthu tating'onoting'ono ndi chinyezi chotsalira ndi chotulutsa thovu mu nkhungu chifukwa cha condensation. zafupika kwambiri.Kanema, tiyeni tichitire limodzi!
Komanso, wailesi pafupipafupi kusungunuka luso kwambiri bwino kuchira mlingo wa thovu tinthu tinthu.Childs, yobwezeretsanso katundu thovu ikuchitika kaya umakaniko kapena mankhwala.Pakati pawo, njira yobwezeretsanso makina ndikudula mwachindunji ndikusungunula pulasitiki, ndikuigwiritsa ntchito pokonzekera zida zobwezerezedwanso, ndipo zinthu zakuthupi nthawi zambiri zimakhala zotsika polima polima (Chithunzi 1).Mamolekyu ang'onoang'ono omwe amapezedwa amagwiritsidwa ntchito ngati zida zopangira tinthu tatsopano ta thovu.Poyerekeza ndi njira yamakina, kukhazikika kwa tinthu tating'onoting'ono tatsopano timakula bwino, koma njirayi imakhala ndi mphamvu zambiri komanso kuchira kochepa.
Kutengera pulasitiki ya polyethylene monga mwachitsanzo, kutentha kwa zinthuzi kuyenera kukhala pamwamba pa 600 ° C, ndipo kuchira kwa ethylene monomer ndikochepera 10%.EPS yopangidwa ndi chikhalidwe cha nthunzi imatha kubwezanso mpaka 20% yazinthuzo, pomwe EPS yopangidwa ndi ukadaulo wa ma radio frequency fusion ili ndi mulingo wobwezeretsanso wa 70%, womwe umagwirizana bwino ndi lingaliro la "chitukuko chokhazikika".
Panopa pulojekiti ya Kurt yoti "Chemical-Free Recycling of EPS Materials by Radio Frequency Fusion Technology" yapambana Mphotho ya 2020 Bavarian Energy.Zaka ziwiri zilizonse, Bavaria amapereka mphoto kwa ochita bwino kwambiri mu gawo la mphamvu, ndipo Bavarian Energy Prize wakhala mmodzi wa mphoto zapamwamba kwambiri mu gawo la mphamvu.Pachifukwa ichi, Rainer Kurtz, CEO wa Kurtz Ersa, anati: "Kuyambira kukhazikitsidwa kwake mu 1971, Kurtz akupitiriza kutsogolera chitukuko cha mafakitale opanga thovu, ndipo akupitirizabe kupanga njira zokhazikika zothandizira kupanga zokhazikika padziko lonse lapansi. .Zopereka.Pakadali pano, Kurtz wapanga matekinoloje osiyanasiyana otsogola pamakampani.Pakati pawo, Kurtz WAVE FOAMER - wailesi yoweyula thovu akamaumba luso luso, amene osati kupulumutsa mphamvu ndi wochezeka zachilengedwe, komanso akhoza kutulutsa thovu apamwamba, izo zasintha kotheratu Kupanga mankhwala chikhalidwe thovu, kupanga tsogolo wobiriwira. kuti azitha kukonza thovu mokhazikika".
Pakali pano, Kurt's radio wave foam molding teknoloji yayamba kupanga zinthu zambiri za EPS thovu.M'tsogolomu, Kurt akukonzekera kugwiritsa ntchito teknolojiyi pazinthu zowonongeka ndi zipangizo za EPP.Pamsewu wa chitukuko chokhazikika, tidzapita patsogolo ndi makasitomala athu.
Nthawi yotumiza: Jun-20-2022