Kunezinhlobo ezimbili zama-resin asetshenziselwa ukukhiqiza ama-composites: i-thermoset ne-thermoplastic.Ama-Thermoset resins angama-resin ajwayelekile kakhulu, kepha ama-thermoplastic resins athola isithakazelo esivuselelwe ngenxa yokwanda kokusetshenziswa kwezinhlanganisela.
Izinhlayiya ze-Thermoset ziyaqina ngenxa yenqubo yokwelapha, esebenzisa ukushisa ukuze kwakhe ama-polymer axhumene kakhulu anamabhondi aqinile angancibiliki noma angancibiliki lapho ishiswa.Ngakolunye uhlangothi, ama-thermoplastic resins angamagatsha noma amaketanga ama-monomers athambisayo lapho eshisisa futhi aqina uma selehlile, inqubo ebuyiseleka emuva engadingi ukuxhumana kwamakhemikhali.Ngamafuphi, ungakwazi ukulungisa kabusha futhi uguqule kabusha ama-thermoplastic resins, kodwa hhayi ama-thermoset resins.
Intshisekelo yezinhlanganisela ze-thermoplastic iyakhula, ikakhulukazi embonini yezimoto.
Izinzuzo ze-Thermosetting Resins
Ama-thermoset resins afana ne-epoxy noma i-polyester athandwa kakhulu ekwenziweni okuyinhlanganisela ngenxa yokubonakala kwawo okuphansi kanye nokungena okuhle kakhulu kunethiwekhi yefiber.Ngakho-ke kungenzeka ukusebenzisa imicu eminingi futhi ukwandise amandla ezinto ezihlanganisiwe eziqediwe.
Isizukulwane sakamuva sezindiza ngokuvamile sihlanganisa izingxenye eziyinhlanganisela ezingaphezu kwamaphesenti angu-50.
Ngesikhathi se-pultrusion, imicu icwiliswa ku-resin ye-thermoset futhi ifakwe esikhunjini esishisayo.Lokhu kusebenza kwenza kusebenze ukusabela okwelaphayo okuguqula inhlaka yesisindo esiphansi ibe yisakhiwo senethiwekhi esinezinhlangothi ezintathu lapho amafayibha akhiyelwa khona kule nethiwekhi esanda kwakhiwa.Njengoba ukusabela okuningi kokwelapha kuyi-exothermic, lokhu kusabela kuyaqhubeka njengamaketanga, okwenza ukukhiqizwa okukhulu.Uma i-resin isibekiwe, isakhiwo esinezinhlangothi ezintathu sivala imicu endaweni futhi sinikeze amandla nokuqina enhlanganisela.
Isikhathi sokuthumela: Oct-19-2022