Polasetiki ke theknoloji ea boenjiniere e kenyelletsang mekhoa e fapaneng ea ho fetola lipolasetiki hore e be lihlahisoa tsa polasetiki. Nakong ea phetoho ena, hangata e le 'ngoe kapa tse ling tse latelang: liphetoho ho polymer rheology le thepa ea' mele le ea lik'hemik'hale.
Compression Molding
Thepa e kholo ea ho bopa ha compression ke mochini oa khatiso le hlobo. Mochine oa khatiso o sebelisoang haholo ke mochini o hatisang-o nang le hydraulic, ho tloha ho lithane tse mashome ho isa ho tse makholo. Ho na le likhatello tse tlase{{3}le khatello e phahameng-e holimo. Mouta o sebelisoang bakeng sa ho etsa compression mold o bitsoa compression mold, e arotsoeng ka mekhahlelo e meraro: overflow molds, semi- overflow molds, le{7}}non overflow forms. Melemo e ka sehloohong ea ho bopa ha compression ke hore e khona ho bopa lihlahisoa tse nang le libaka tse kholo tse bataletseng 'me li ka hlahisa ka bongata. Mefokolo ea eona ke lipotoloho tse telele tsa tlhahiso le katleho e tlase.
Ho Bopa ka Ente
Lamination molding hangata e sebelisa mochine oa khatiso oa lamination. Mofuta ona oa khatiso o na le lipoleiti tse ngata tse phaphametseng tsa likhatello tse chesang pakeng tsa lipoleiti tsa khatello tse tsamaeang le tse emeng. Lisebelisoa tse matlafatsang tse sebelisoang hangata ha ho etsoa lamination li kenyelletsa lesela la k'hothone, lesela la khalase, pampiri le lesela la asbestos. Li-resin li kenyelletsa li-phenolic resins, epoxy resin, unsaturated polyester resin, le litlolo tse ling tsa thermoplastic. Ho bopeha ha ente, ho bopa ha molumo oa extrusion, ho bopa ho otlolla, ho roala filimi, ho roala ho chesang ho qhibilihisa, ho fafatsa bethe, ho fafatsa lelakabe, ho fafatsa ka electrostatic, ho fafatsa ka plasma.
Extrusion Molding
Extrusion molding, eo hape e tsejoang e le extrusion molding kapa extrusion, ke mokhoa oa ho etsa lisebelisoa ka mokhoa o tsoelang pele ka ho shoa sebakeng se phallang ka ho futhumatsa le ho li hatella ka extruder. Extrusion e sebelisoa haholo bakeng sa ho bopa thermoplastics, empa hape e ka sebelisoa bakeng sa lipolasetiki tse ling tsa thermosetting. Lihlahisoa tse atolositsoeng ke lintlha tse tsoelang pele, joalo ka liphaephe, lithupa, likhoele, lifilimi, le terata le thapo. Ntle le moo, e ka sebelisoa bakeng sa ho kopanya polasetiki, granulation ea polasetiki, ho etsa mebala le ho kopanya. Mochini oa ho bopa oa extrusion o na le lisebelisoa tsa extrusion, mochini oa phetisetso, le sistimi ea ho futhumatsa le ho futhumatsa. Li-extruder li tla ka mefuta e 'meli: mofuta oa screw (screw se le seng le multi-screw) le mofuta oa plunger. Ea pele ke ts'ebetso e tsoelang pele ea extrusion, ha ea morao-rao e le nako le nako. Sebopeho sa mantlha sa{8}}screw extruder e le 'ngoe haholo-holo se kenyelletsa sesebelisoa sa phepelo, sesebelisoa sa ho fepa, barrel, screw, die head, le die. Lisebelisoa tse thusang bakeng sa li-extruder li oela ka mekhahlelo e meraro e meholo: lisebelisoa tsa pele tsa thepa (tse kang ho tsamaisa le ho omisa), lisebelisoa tsa ho lokisa extrudate (ho bopa, ho pholisa, ho hula, ho itšeha kapa ho roala), le lisebelisoa tsa taolo ea boemo ba tlhahiso.
Pultrusion Molding
Pultrusion ke o mong oa mekhoa ea ho bopa bakeng sa thermosetting fiber{0}lipolasetiki tse matlafalitsoeng. E sebelisoa ho hlahisa liprofaele tse nang le sebopeho se sa fetoheng{2} sa likarolo le bolelele bo sa lekanyetsoang. Mokhoa oa ho bopa o kenyelletsa ho taka likhoele tse kenngoeng ka resin ka sekoahelo se futhumetseng, ebe ho tsoela pele ho phekola resin ka phaposing ea ho futhumatsa ho hlahisa{4}matla a sa khaotseng a matlafalitsoeng a polasetiki.
Li-resin tse sebelisoang hangata bakeng sa ho bopa ha pultrusion li kenyelletsa polyester e sa tsitsang, epoxy le silicone. Unsaturated polyester resin ke eona e sebelisoang ka ho fetisisa. Mochini oa ho bopa oa pultrusion hangata o na le sesebelisoa sa ho hlophisa fiber, tanka ea resin, sesebelisoa sa preforming, sesebelisoa sa ho futhumatsa le ho futhumatsa, sesebelisoa sa ho hula le lisebelisoa tsa ho seha.
