Kunezinhlobo ezimbili zama-resins asetshenziselwa ukukhiqiza ama-composites: Thermoset kanye ne-thermoplastic. Ama-thermoset resens ama-resins ajwayelekile kakhulu, kepha ama-thermoplastic resins athola inzalo evuselelwe ngenxa yokulandisa kokusetshenziswa kwama-composites.
I-Thermoset resins ilukhuni ngenxa yenqubo yokwelapha, esebenzisa ukushisa ukuze ihlele ama-polmer axhumeke kakhulu anezibopho eziqinile noma ezingafinyeleleki eziqinile ezingancibiliki. Ngakolunye uhlangothi ama-thermoplastic resins, ngamagatsha noma amaketanga ama-monomers athambise lapho afudunyezwa futhi aqinisa uma apholile, inqubo ephikiswayo engadingi ukuxhumana kwamakhemikhali. Ngamafuphi, ungaxoxa futhi uguqulwe kabusha ama-thermoplastic resins, kepha hhayi ama-thermoset resen.
Intshisekelo kuma-thermoplastic composites ayakhula, ikakhulukazi embonini yezimoto.
Izinzuzo zama-thermosetting resins
Ama-thermoset ahlala njenge-epoxy noma i-polyester athandwa ekukhiqizeni okuhlanganisiwe ngenxa yokubonakala kwawo okuphansi nokungena okuhle kwinethiwekhi ye-fiber. Ngakho-ke kungenzeka ukusebenzisa imicu eminingi futhi wandise amandla ezinto ezisetshenzisiwe eziqediwe.
Isizukulwane sakamuva sezindiza ngokuvamile sifaka phakathi izingxenye ezingaphezu kwamaphesenti angama-50.
Ngesikhathi sokuxinana, imicu ihlehliselwa ku-thermoset resin futhi ibekwe isikhunta esivuthayo. Lo msebenzi usebenze ukusabela kolapha okuguqula i-resin ephansi ye-molecular-isisindo ibe yisakhiwo senethiwekhi esiqinile esinezinhlangothi ezintathu lapho imicu ekhiyiwe kuleyo nenethiwekhi esanda kumiswa. Njengoba ukusabela okwelapha ekwelapheni kungukuphakamisa, lokhu kusabela kuqhubeka njengamaketanga, kunika amandla ukukhiqizwa okukhulu. Lapho i-resin isetha, isakhiwo esinezinhlangothi ezintathu sikhiya imicu endaweni futhi idlulisela amandla nokuqina kwenhlanganisela.
Isikhathi sePosi: Oct-19-2022
