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Ii-resin ze-epoxy zisetyenziswa kakhulu kwiiglue zoshishino kunye neengubo ngenxa yeempawu zazo zokubopha eziqinileyo kunye nokumelana neekhemikhali, kodwa ukubuthathaka kwazo kunye nokuncipha kwazo okuphezulu kunokunciphisa ukusebenza kwazo kwizicelo ezifuna amandla. Umgubo weWollastonite uvele njengesongezelelo esinamandla sokuqinisa, ujongana nale mida ngelixa uphucula iimpawu eziphambili zee-epoxy composites ezisetyenziswa kumashishini okwakha, okuvelisa, kunye nokulungisa.

Ukumelana nempembelelo luphuculo olubalulekileyo olubonelelwa yi-wollastonite powder kwi-epoxy resins. Ulwakhiwo lwe-acicular yesongezelelo lusebenza njengesithinteli sokuqhekeka: xa i-epoxy ichaphazeleka okanye ixinezelekile, amasuntswana afana nenaliti aqondisa kwakhona kwaye afunxe amandla, ethintela ukwanda kwemingxunya. Oku kuguqula i-epoxy ebuthathaka ibe yinto eqinileyo nehlala ixesha elide, okwenza ifaneleke kwizicelo ezifana nezincamathelisi zesakhiwo ekwakheni (ikhonkrithi yokubopha okanye isinyithi) kunye neengubo zokukhusela kumatshini, apho ukumelana nokuwa, ukungqubana, okanye ukungcangcazela kubalulekile. Uvavanyo lubonisa ukuba ukongeza i-15–25% ye-wollastonite powder kunokunyusa amandla empembelelo ye-epoxy ngama-40–60% xa kuthelekiswa ne-resin engazaliswanga.​
Ukunamathela kwi-substrates yenye into ebalulekileyo ephuculwa yi-wollastonite powder. Umphezulu wayo onemingxuma kunye nendawo ephezulu yobuso ikhuthaza ukudibana koomatshini kunye ne-epoxy matrix kunye ne-substrate (njengesinyithi, umthi, okanye ikhonkrithi), okudala ikhonkco eliqinileyo. Oku kuluncedo ngakumbi kwi-adhesives zoshishino ezisetyenziselwa ukudibanisa izinto ezahlukeneyo, apho ukunamathela okungalunganga kunokukhokelela ekungasebenzi kakuhle kwamalungu. Kwiingubo, ukunamathela okuphuculweyo kuthintela ukuxobuka kunye nokwahlukana, nokuba kukwiindawo ezifumileyo okanye ezivezwe ziikhemikhali, nto leyo eyandisa ubomi benkonzo yeendawo ezikhuselweyo.​
Ukuncipha kwe-epoxy yingxaki eqhelekileyo kwii-epoxy resins, nto leyo ebangela ukungazinzi kobukhulu, uxinzelelo lwangaphakathi, kunye nokuncipha kwamandla e-bond. Umgubo we-Wollastonite unciphisa ukuncipha ukuya kuthi ga kwi-30% ngexesha lenkqubo yokupholisa, njengoko amasuntswana awo aqinileyo ethintela ukuxinana kwe-epoxy matrix. Oku kubalulekile kwizicelo ezifuna ulawulo oluchanekileyo lobukhulu, olufana nokufakwa kwe-elektroniki okanye ukwenza i-mold, apho ukuncipha kunokuphazamisa izinto okanye kudale izikhewu. Ukuncipha kokuncipha kunciphisa nomngcipheko wokuqhekeka kwiingubo ezixineneyo okanye ii-adhesive bonds ezinkulu, ukuqinisekisa ukusebenza kwexesha elide.
Ukumelana neekhemikhali kuyaphucuka kwii-epoxy composites eziqiniswe yi-wollastonite. Indalo yokungangeni kwesi sithako (simelana nee-asidi, ii-alkalis, kunye nezinyibilikisi) kunye nokukwazi kwaso ukwenza i-epoxy matrix exineneyo kunciphisa ukungena kwezinto ezibolayo. Oku kwenza ezi composites zifaneleke ukusetyenziswa kwiindawo zokucubungula iikhemikhali, kwizityalo zonyango lwamanzi amdaka, nakwiindawo zaselwandle, apho ukuchatshazelwa ziikhemikhali eziqatha okanye amanzi anetyuwa kunokonakalisa i-epoxy engaqinisiweyo.​
Iingenelo zokucubungula zenza kube lula ukufaka umgubo we-wollastonite kwi-epoxy formulations. Ukufunxwa kwawo okuncinci kweoyile kuvumela amanqanaba aphezulu okulayisha ngaphandle kokwanda kwe-viscosity, ukuqinisekisa ukuba i-epoxy ihlala kulula ukuyixuba, ukuyisebenzisa, kunye nokuyisasaza. Umbala omhlophe womgubo nawo awuchaphazeli umbala we-epoxy, okuvumela ukuba umbala wenziwe ngokwezifiso ngee-pigment. Kwi-epoxies ezinamacandelo amabini, i-wollastonite ayiphazamisi impendulo yokuphilisa, iqinisekisa amaxesha okuseta ahambelanayo kunye nokudibanisa ngokupheleleyo.​
Ubungakanani bamasuntswana kunye neendlela zokunyanga umphezulu zivumela ukwenziwa ngokwezifiso kwezicelo ezithile ze-epoxy. Iigreyidi ezincinci (5–10 microns) zisetyenziswa kwiingubo ezibhityileyo kunye nezincamathelisi apho kufuneka ukugqitywa okugudileyo, ngelixa iigreyidi eziqinileyo (20–40 microns) zibonelela ngokuqiniswa okuphezulu kwizicelo zesakhiwo. I-wollastonite ecociweyo kumphezulu (enee-agents zokudibanisa i-silane) iphucula ukuhambelana ne-epoxy resins, iphucula ukusasazeka kunye nokubopha kwi-interface ye-filler-matrix ukuze isebenze kakuhle.​
Ukusebenza kakuhle kweendleko kuqhuba ukwamkelwa komgubo we-wollastonite kwii-epoxy composites. Xa kuthelekiswa ne-glass fiber okanye i-carbon fiber reinforcements, i-wollastonite inika ukonga okukhulu kweendleko ngelixa ibonelela ngophuculo olufanayo loomatshini. Umthamo wayo ophezulu wokulayisha unciphisa ubungakanani be-epoxy resin ebizayo efunekayo, inciphisa iindleko zokwenziwa ngokubanzi ngaphandle kokubeka emngciphekweni ukusebenza.​
Ngamafutshane, amandla e-wollastonite powder okuphucula ukumelana nempembelelo, ukuphucula ukunamathela, ukunciphisa ukushwabana kokuqina, kunye nokwandisa ukumelana neekhemikhali kwenza ukuba ibe sisixhobo esifanelekileyo sokuqinisa izinto ezidityanisiweyo ze-epoxy resin. Ukulula kokucubungula kwayo kunye nokusebenza kwayo kakuhle kuxhasa ngakumbi ukusetyenziswa kwayo kwi-adhesives kunye neengubo zoshishino, apho ukuqina kunye nokusebenza kubalulekile kwimpumelelo yexesha elide.

 


Ixesha leposi: Julayi-31-2025