Polyester ke sehlopha salipolimatse nang leester sehlopha se sebetsangkarolong e 'ngoe le e 'ngoe e pheta-phetoang ea ketane ea bona e kholo.E le e khethehilengthepa, hangata le bolela mofuta o bitsoangpolyethylene terephthalate(PET).Polyester e kenyelletsa lik'hemik'hale tse hlahang ka tlhaho, joalo ka hodimelalelikokoanyana, hammoho le li-synthetics tse kangpolybutyrate.Li-polyester tsa tlhaho le tse seng kae tsa maiketsetso lie ka senyehang, empa li-polyester tse ngata tsa maiketsetso ha li joalo.Li-polyester tsa maiketsetso li sebelisoa haholo liaparong.
Ka linako tse ling likhoele tsa polyester li ohloa hammoho le likhoele tsa tlhaho ho hlahisa aleselae nang le thepa e kopaneng.K'hothone-metsoako ea polyester e ka ba matla, e sa soabane le ho lla, 'me ea fokotsa ho honyela.Likhoele tsa maiketsetsoho sebelisa polyester ho na le metsi a mangata, moea le ho hanyetsa tikoloho ha ho bapisoa le likhoele tse tsoang ho limela.Ba fokotsehilee thibelang mollomme e ka qhibidiha ha e hoteditswe.
Li-polyester tsa crystalline tsa metsi li har'a tse ling tsa pele tse sebelisoang indasteringli-polymer tsa kristale tse metsi.Li sebelisetsoa thepa ea tsona ea mechine le ho hanyetsa mocheso.Litšobotsi tsena le tsona li bohlokoa ts'ebelisong ea tsona joalo ka tiiso e abradable lienjineng tsa jete.
Polyester tse hlahang ka tlhaho li kenyelletsacutinkarolo eali-cuticles tsa semela, e nang leomega hydroxy acidle tse nkiloeng ho tsona, li hokahane ka tselaesterli-bond, ho etsa li-polymers tsa polyester tsa boholo bo sa feleng.Li-polyester li boetse li hlahisoa kelinotsilelokongLikopano, e leng sephiri acellophane-joaloka lesela la polyester bakeng sa lisele tsa bona tse ka tlas'a lefatše tse ba fang lebitso la bosoasoi "polyester linotsi".
Ho itšetlehile ka sebopeho sa lik'hemik'hale, polyester e ka ba athermoplastickapathermoset.Ho boetse ho na leli-resin tsa polyesterphekoloa ke li-hardeners;leha ho le joalo, li-polyester tse tloaelehileng haholo ke thermoplastics.[11]Sehlopha sa OH se arajoa kaIsocyanatemotsoako o sebetsang tsamaisong ea likarolo tse 2 tse hlahisang liphahlo tse ka 'nang tsa e-ba le mebala.Li-polyester joalo ka thermoplastics li ka fetoha sebopeho kamora ho sebelisoa ha mocheso.Le hoja li ka cha lithempereichareng tse phahameng, li-polyester li na le tšekamelo ea ho honyela hole le malakabe le ho itima ha li tuka.Likhoele tsa polyester li na le tse phahamengho tiealeE-modulushammoho le ho monya metsi a fokolang le ho fokolangho honyelapapisong le likhoele tse ling tsa indasteri.
Ho eketsa likarolo tse nkhang hamonate tsa polyester ho eketsa bonamocheso oa phetoho ea khalase, mocheso o qhibilihang,botsitso ba mocheso, botsitso ba lik'hemik'hale, le ho hanyetsa solvent.
Li-polyester le tsona li ka ba tengtelechelic li-oligomersjoalo ka polycaprolactone diol (PCL) le polyethylene adipate diol (PEA).Joale li sebelisoa e leli-prepolymers.
Nako ea poso: Dec-06-2022