Mapolanka a foam a PVC a sebelisoa likarolong tsohle tsa bophelo, haholo-holo ka thepa ea mohaho. Na ua tseba hore na ke mathata afe a ka hlahang nakong ea tlhahiso ea mapolanka a foam a PVC? Ka tlase, mohlophisi o tla u bolella ka tsona.
Ho ea ka likhakanyo tse fapaneng tsa ho foaming, e ka aroloa ka ho foaming haholo le ho foamisa ka tlaase. Ho ea ka bonolo le ho thatafala ha foam, e ka aroloa ka li-foam tse thata, tse thata le tse bonolo. Ho latela sebopeho sa sele, e ka aroloa ka lipolasetiki tsa foam tse koetsoeng le lipolasetiki tsa foam tse bulehileng. Lipampiri tse tloaelehileng tsa foam tsa PVC ke lipampiri tse thata tse koetsoeng tse tlase-foam. Lipampiri tsa foam tsa PVC li na le melemo ea ho hanyetsa kutu ea lik'hemik'hale, ho hanyetsa boemo ba leholimo, ho lieha ha lelakabe, joalo-joalo, 'me li sebelisoa haholo likarolong tse ngata, ho kenyelletsa le liphanele tse bontšang, matšoao, li-billboards, li-partitions, liphanele tsa kaho, lisebelisoa tsa thepa ea ka tlung, joalo-joalo. lebisa ho lisele tse kholo ka pampiri ea foam le likarolo tse telele tsa longitudinal. Tsela e tobileng ea ho ahlola hore na matla a ho qhibiliha ha a lekane ke ho ea ka mor'a li-roller tse tharo ebe o tobetsa poleiti e phuthetsoeng ka har'a rolara e bohareng ka menoana ea hau. Haeba matla a ho qhibiliha a le ntle, o ka utloa elasticity ha o tobetsa. Haeba ho le thata ho hlaha ka mor'a ho hatelloa, matla a ho qhibiliha a fokola. Hobane sebopeho sa screw le mokhoa oa ho pholisa li fapane haholo, ho thata ho ahlola hore na mocheso o nepahetse. Ka kakaretso, ka har'a mojaro o lumelletsoeng oa extruder, mocheso libakeng tsa 3-5 e lokela ho ba tlase kamoo ho ka khonehang. E le hore u fumane lihlahisoa tse nang le foamed tse tšoanang ka maqephe a foam, ho boetse hoa hlokahala ho netefatsa hore thepa ea PVC e na le matla a ho qhibiliha. Ka hona, boleng ba taolo ea foaming bo bohlokoa haholo. Ka mohlala, ho phaella mesebetsing ea motheo ea thuso ea ho sebetsa ka kakaretso, molaoli oa foaming o boetse o na le boima ba molek'hule le matla a qhibilihisang, a ka ntlafatsang haholo matla a ho qhibiliha a motsoako oa PVC le ho thibela li-bubble le ho phatloha. , e leng se hlahisang sebopeho sa sele se ts'oanang le ho fokotseha ha lihlahisoa tsa lihlahisoa, ha ho ntse ho ntlafatsa khanya ea holim'a sehlahisoa. Ha e le hantle, tekanyo ea 'mala o mosehla oa foaming agent le e tšoeu ea foaming e boetse e lokela ho bapisoa.
Mabapi le mapolanka, haeba botsitso bo sa lekana, bo tla ama boto eohle le holim'a boto ho fetoha mosehla, 'me boto ea foam e tla ba brittle. Tharollo ke ho theola mocheso oa ho sebetsa. Haeba ho se na ntlafatso, o ka fetola foromo mme o eketsa ka nepo palo ea stabilizer le lubricant. The stabilizer ke mokhoa oa ho lubrication o ipapisitseng le lilubricant tse tsoang kantle ho naha ho ntlafatsa mokelikeli oa thepa. Lisebelisoa tse thibelang mocheso li na le mokelikeli o motle. , ho hanyetsa mocheso o motle; ho hanyetsa boemo ba leholimo bo matla, ho hasana hantle, liphello tse thata le tse qhibilihisang; e babatsehang botsitso, plasticizing fluidity, pharaletseng sebetsa mefuta e fapaneng, applicability matla le tlatsetso ka hare le ka ntle lubrication. Lubricant e na le viscosity e tlase, thepa e khethehileng e phahameng, lubricity e babatsehang le ho hasana, 'me e sebelisoa haholo ho lokisa polasetiki le liindasteri tse ling. E na le liphello tse ntle tsa lubrication ka hare le ka ntle; e na le tumellano e ntle le polyethylene, polyvinyl chloride, polypropylene, joalo-joalo E sebelisoa e le dispersant, lubricant le lightener nakong ea ho bōptjoa ha litlaleho tsa PVC, liphaephe, lisebelisoa tsa pipe, PE le PP, ho ntlafatsa tekanyo ea polasetiki, ho ntlafatsa ho thata le ho boreleli. holim'a lihlahisoa tsa polasetiki, 'me li ka fetoloa ka bonngoe, ho etsa hore ho be bonolo ho fumana mathata ka potlako Hohle moo u leng teng, rarolla bothata kapele kamoo ho ka khonehang. Mabapi le ho leka-lekana ha lubricant, slip e sa lekaneng ea kantle e bonts'a taba ea hore mocheso o sebakeng sa 5 oa extruder o thata ho o laola le ho futhumala habonolo, o bakang mocheso o phahameng mokokotlong oa converging, mathata a kang li-bubble tse kholo, li-bubble le mosehla bohareng ba boto, 'me bokaholimo ba boto ha bo boreleli; Ho thella ho feteletseng ho tla etsa hore pula e be e tebileng, e tla iponahatsa ka sebopeho ka har'a hlobo le pula ea ho thella ka ntle holim'a poleiti. E tla boela e iponahatse e le ntho e itseng e etsahalang ka bomong e eang pele le morao ka mokhoa o sa tloaelehang holim'a poleiti. Slip e sa lekaneng ea ka hare e bolela hore ho thata ho laola botenya ba boto, e teteaneng bohareng le e tšesaane ka mahlakoreng ka bobeli. Ho thella ho hoholo ka hare ho tla lebisa habonolo mochesong o phahameng mokokotlong o kopanyang.
Nako ea poso: May-27-2024