Phakathi kwezinqubo ezahlukene zokubumba izibunjwa zepulasitiki,ukubumba umjovo iyona esetshenziswa kakhulu. Le mbono ikhombisa ukuthi ukubumba ngomjovo kunezinzuzo zokusetshenziswa kwezinto eziqinile, ikhono lokubumba imikhiqizo enezakhiwo eziyinkimbinkimbi ngesikhathi esisodwa, izimo zenqubo ezivuthiwe, ukunemba okuphezulu komkhiqizo, kanye nezindleko zokusetshenziswa eziphansi. Ngakho-ke, imikhiqizo ebumba ngomjovo ibala ingxenye yemikhiqizo yepulasitiki ngezikhathi ezithile. Njengoba kwanda, izinqubo ezihlobene, imishini, ukubumba kanye nezindlela zokuphatha ukusetshenziswa nazo ziye zathuthukiswa ngokushesha.
Ama-thermoplastic ayizingxenye zepulasitiki ezingabunjwa zibe yisimo esithile uma zishiswa, futhi zinamathele esimweni esiqediwe ngemva kokupholisa. Uma zishiswa futhi, zingathanjiswa futhi zincibilikiswe, futhi ingxenye yepulasitiki enesimo esithile ingenziwa futhi, futhi ingamiswa ngokuphindaphindiwe, okuyinto engashintshashintshayo.
Ngenxa yokuthi ama-thermoplastic ayizinto ezingashiswa ngokuphindaphindiwe futhi zithambe futhi zipholiswe futhi ziqiniswe, zingaqiniswa ngokuphindaphindiwe futhi zakheke ngokushisa nokuncibilika, ngakho-ke imfucuza yama-thermoplastic ngokuvamile ingaphinde isetshenziswe futhi isetshenziswe, okubizwa ngokuthi “izinto zesibili”. Ukuncipha ngemva kokuncipha kwezingxenye ezibunjiwe ngomjovo kubhekisela ekutheni lapho izingxenye ezibunjiwe ngomjovo zibunjwa, uchungechunge lokucindezeleka luyadalwa ngenxa yezinguquko zazo zangaphakathi zomzimba, zamakhemikhali, kanye nezemishini. Ngemva kokuba izingxenye ezibunjiwe ngomjovo zibunjiwe futhi ziqiniswe, kuba nokucindezeleka okusele. Ngemva kokuba izingxenye ezibunjiwe ngomjovo zisusiwe, ngenxa yokucindezeleka okuhlukahlukene okusele, Kuzobangela ukuthi usayizi wezingxenye ezibunjiwe ngomjovo wehle futhi.
Ngokuvamile, ingxenye ebunjiwe ngomjovo incipha kakhulu zingakapheli amahora ayi-10 ngemva kokudilizwa, futhi ngokuyisisekelo ibunjiwe ngemva kwamahora angama-24, kodwa kuthatha isikhathi eside ukufinyelela isimo sokugcina. Ngokuvamile, ukuncipha ngemva kokuncipha kwama-thermoplastic kukhulu kunokwamapulasitiki e-thermoset, kanti ukuncipha ngemva kokuncipha kwezingxenye ezibunjiwe ngomjovo kanye nezibunjiwe ngomjovo kukhulu kunokwamazingxenye ezibunjiwe ngomjovo ezinciphile.
Isikhathi sokuthunyelwe: Agasti-17-2021