Kunezinhlobo ezimbili zama-resin asetshenziselwa ukukhiqiza ama-composite: i-thermoset kanye ne-thermoplastic. Ama-resin e-thermoset yiwona ama-resin avame kakhulu, kodwa ama-resin e-thermoplastic athola isithakazelo esisha ngenxa yokusetshenziswa okwandayo kwama-composite.
Ama-resin e-thermoset ayaqina ngenxa yenqubo yokupholisa, esebenzisa ukushisa ukwakha ama-polymer axhumene kakhulu anezibopho eziqinile ezingancibiliki noma ezingangenisi amanzi ezingancibiliki lapho zishiswa. Ama-resin e-thermoplastic, ngakolunye uhlangothi, angamagatsha noma amaketanga ama-monomer athambisa lapho eshiswa futhi aqine uma esepholile, inqubo eguqukayo engadingi ukuxhumeka kwamakhemikhali. Ngamafuphi, ungancibilikisa futhi uguqule ama-resin e-thermoplastic, kodwa hhayi ama-resin e-thermoset.
Intshisekelo ezintweni ezihlanganisiwe ze-thermoplastic iyanda, ikakhulukazi embonini yezimoto.
Izinzuzo ze-Thermosetting Resins
Ama-resin e-thermoset afana ne-epoxy noma i-polyester ayathandwa ekukhiqizweni kwenhlanganisela ngenxa yokungacaci kwawo okuphansi kanye nokungena okuhle kakhulu kunethiwekhi ye-fiber. Ngakho-ke kungenzeka ukusebenzisa imicu eminingi futhi kwandiswe amandla ezinto ezihlanganisiwe eziqediwe.
Isizukulwane sakamuva sezindiza ngokuvamile sihlanganisa izingxenye ezihlanganisiwe ezingaphezu kwamaphesenti angu-50.
Ngesikhathi se-pultrusion, imicu ifakwa ku-resin ye-thermoset bese ifakwa ku-mold efudumele. Lo msebenzi uvuselela ukusabela kokwelapha okuguqula i-resin enesisindo esincane sama-molecule ibe yisakhiwo senethiwekhi esiqinile esinezinhlangothi ezintathu lapho imicu ivalelwa khona kule nethiwekhi esanda kwakhiwa. Njengoba ukusabela okuningi kokwelapha kuyi-exothermic, lokhu kusabela kuyaqhubeka njengamaketanga, okuvumela ukukhiqizwa okukhulu. Uma i-resin isiqalile, isakhiwo esinezinhlangothi ezintathu sivala imicu endaweni yayo futhi sinikeze amandla nokuqina ku-composite.
Isikhathi sokuthunyelwe: Okthoba-19-2022
