Ama-resin e-epoxy asetshenziswa kabanzi kuma-glue ezimbonini kanye nezingubo ngenxa yezakhiwo zawo zokubopha eziqinile kanye nokumelana namakhemikhali, kodwa ubuthakathaka bawo kanye nokuncipha kwawo okunamandla kunganciphisa ukusebenza kwezicelo ezidinga kakhulu. I-Wollastonite powder ivele njengesithako esinamandla sokuqinisa, ibhekana nalezi mikhawulo ngenkathi ithuthukisa izakhiwo ezibalulekile zama-epoxy composites okusetshenziswa ezimbonini zokwakha, zokukhiqiza kanye nokulungisa.
Ukumelana nomthelela kuyintuthuko ebalulekile enikezwa yi-wollastonite powder kuma-epoxy resins. Isakhiwo se-acicular sesithasiselo sisebenza njengesivimbeli sokuqhekeka: lapho i-epoxy ihlaselwa noma icindezeleka, izinhlayiya ezifana nenaliti ziqondisa kabusha futhi zimunce amandla, zivimbele ukusabalala kwemifantu. Lokhu kuguqula i-epoxy ephukile ibe yinto eqinile futhi eqinile, okwenza ifanelekele ukusetshenziswa njengezinamathiselo zesakhiwo ekwakheni (ukhonkolo wokubopha noma insimbi) kanye nokugqoka okuvikelayo emishinini, lapho ukumelana nokuwa, ukushayisana, noma ukudlidliza kubalulekile. Ukuhlola kukhombisa ukuthi ukwengeza i-wollastonite powder engu-15-25% kungandisa amandla omthelela we-epoxy ngo-40-60% uma kuqhathaniswa ne-resin engagcwalisiwe.
Ukunamathela ezisekelweni kungenye imfanelo ebalulekile ethuthukiswa yi-wollastonite powder. Ubuso bayo obunezimbobo kanye nendawo ephezulu yobuso kukhuthaza ukuhlangana komshini kokubili i-epoxy matrix kanye ne-substrate (njengensimbi, ukhuni, noma ukhonkolo), okudala isibopho esiqinile. Lokhu kuzuzisa kakhulu ezinamathiselweni zezimboni ezisetshenziselwa ukubopha izinto ezingafani, lapho ukunamathela okubi kungaholela ekwahlulekeni kwamalunga. Ezimbozweni, ukunamathela okuthuthukisiwe kuvimbela ukuxebuka nokuhlukanisa, ngisho nasezindaweni ezinomswakama noma ezivezwe ngamakhemikhali, okwandisa impilo yenkonzo yezindawo ezivikelwe.
Ukuqeda ukuncipha kuyinkinga evamile kuma-resin epoxy, okubangela ukungazinzi kobukhulu, ukucindezeleka kwangaphakathi, kanye namandla okubopha anciphile. Impuphu ye-Wollastonite inciphisa ukuncipha ngamaphesenti afinyelela ku-30 ngesikhathi senqubo yokuqeda, njengoba izinhlayiya zayo eziqinile zikhawulela ukuncipha kwe-matrix ye-epoxy. Lokhu kubalulekile ezinhlelweni ezidinga ukulawulwa okunembile kobukhulu, njengokufakwa kwe-elekthronikhi noma ukwenza isikhunta, lapho ukuncipha kungaphazamisa izingxenye noma kudale izikhala. Ukuncipha kokuncipha kunciphisa nengozi yokuqhekeka kwezingubo ezijiyile noma izibopho ezinkulu zokunamathela, okuqinisekisa ukusebenza kwesikhathi eside.
Ukumelana namakhemikhali kuyakhula kuma-epoxy composites aqiniswe yi-wollastonite. Ukungangeni kahle kwesithasiselo (simelana nama-acid, ama-alkali, kanye nezinyibilikisi) kanye nekhono laso lokudala i-epoxy matrix exineneyo kunciphisa ukungena kwezinto ezibolayo. Lokhu kwenza ama-composites afanele ukusetshenziswa ezindaweni zokucubungula amakhemikhali, izitshalo zokwelapha amanzi amdaka, kanye nezindawo zasolwandle, lapho ukuchayeka kumakhemikhali aqinile noma amanzi anosawoti kungonakalisa i-epoxy engaqinisiwe.
Izinzuzo zokucubungula zenza kube lula ukufaka i-wollastonite powder ekwakhiweni kwe-epoxy. Ukumuncwa kwayo okuphansi kwamafutha kuvumela amazinga aphezulu okulayisha ngaphandle kokwanda kwe-viscosity ngokweqile, okuqinisekisa ukuthi i-epoxy ihlala kulula ukuyixuba, ukuyifaka, nokuyisakaza. Umbala omhlophe we-powder awuthinti umbala we-epoxy, okuvumela ukwenza ngokwezifiso umbala ngama-pigment. Kuma-epoxy anezingxenye ezimbili, i-wollastonite ayiphazamisi ukusabela kokwelapha, iqinisekisa izikhathi zokusetha ezihambisanayo kanye nokuxhumanisa okugcwele.
Usayizi wezinhlayiya kanye nezinketho zokwelashwa kwendawo zivumela ukwenza ngokwezifiso izinhlelo zokusebenza ezithile ze-epoxy. Amabanga amahle (ama-micron angu-5-10) asetshenziswa ekumbozweni okuncane kanye nezinamathiseli lapho kudingeka khona ukuqeda okubushelelezi, kuyilapho amazinga amakhulu (ama-micron angu-20-40) enikeza ukuqina okuphezulu ekusetshenzisweni kwesakhiwo. I-wollastonite ephathwe nge-surface (ene-silane coupling agents) ithuthukisa ukuhambisana nama-epoxy resins, ithuthukisa ukuhlakazeka kanye nokubopha esibonakalayo se-filler-matrix ukuze kusebenze kahle.
Ukusebenza kahle kwezindleko kuholela ekwamukelweni kwempuphu ye-wollastonite kuma-epoxy composites. Uma kuqhathaniswa ne-glass fiber noma i-carbon fiber reinforcements, i-wollastonite inikeza ukonga okukhulu kwezindleko ngenkathi inikeza ukuthuthukiswa okufanayo kwemishini. Umthamo wayo wokulayisha ophezulu uphinde wehlise inani le-epoxy resin ebizayo edingekayo, yehlisa izindleko zokwakheka okuphelele ngaphandle kokubeka engcupheni ukusebenza.
Ngamafuphi, ikhono le-wollastonite powder lokuthuthukisa ukumelana nokushayisana, ukuthuthukisa ukunamathela, ukunciphisa ukushwabana kokuqina, nokukhulisa ukumelana kwamakhemikhali kwenza kube yinto efanelekile yokuqinisa izinto ezihlanganisiwe ze-epoxy resin. Ukulula kokucubungula kwayo kanye nokusebenza kwayo kahle kusekela ukusetshenziswa kwayo ezintweni zokunamathisela zezimboni kanye nokugqoka, lapho ukuqina nokusebenza kubalulekile empumelelweni yesikhathi eside.
Isikhathi sokuthunyelwe: Julayi-31-2025
