Ekuqhutyweni nasekuveliseni iimveliso zejeli ye-silica, ukwenzela ukunciphisa ixesha lomjikelo kangangoko kunokwenzeka, kwi-peroxide ye-silica gel, unokukhetha ubushushu obuphezulu be-vulcanization.Ngokobunzima obahlukeneyo bodonga lweemveliso ze-silicone, iqondo lobushushu lokungunda likhethwa ngokubanzi phakathi kwe-180℃ kunye ne-230ºC.Nangona kunjalo, kuhlala kukho iingxaki ezinameva kwinkqubo yokwenziwa kunye nokuveliswa kweemveliso zejeli ye-silica.Kuyimfuneko ukunikela ingqalelo kula manqaku alandelayo.
(1) Ukuba iqondo lobushushu liphezulu kakhulu, kuya kubakho iintanda ezijikeleze umphezulu wokwahlula, ngakumbi i-workpiece enobunzima obukhulu.Oku kubangelwa uxinzelelo olugqithisileyo lwangaphakathi olubangelwa ukwanda kwenkqubo ye-vulcanization.Kule meko, ukushisa kwesikhunta kufuneka kuthotywe.Ubushushu beyunithi yokutofa kufuneka bubekwe ku-80℃ ukuya kwi-100℃.Ukuba uvelisa iindawo ezinamaxesha amade okuphilisa okanye amaxesha omjikelezo, obu bushushu kufuneka buthotywe kancinci.
(2) Kwijeli ye-silica yeplatinized, kuyacetyiswa ukuba kusetyenziswe ubushushu obuphantsi.Ngokubanzi, ubushushu beyunithi yokutofa ayidluli kuma-60 ℃.
(3) Xa kuthelekiswa nerabha yendalo, ijeli ye-silica eqinileyo inokugcwalisa i-mold cavity ngokukhawuleza.Nangona kunjalo, ukuze ugweme kwaye unciphise ukubunjwa kwamaqamza omoya kunye nokunye ukungcola, isantya sokujova kufuneka sincitshiswe.Inkqubo yokugcina uxinzelelo kufuneka imiselwe ixesha elifutshane kunye noxinzelelo oluncinci.Ukubamba uxinzelelo oluphezulu kakhulu okanye olude kakhulu kuya kuvelisa inotshi yokubuya ejikeleze isango.
(4) inkqubo ye-peroxide vulcanization ye-rubber ye-silicone, ixesha le-vulcanization lilingana nerubha ye-fluorine okanye i-EPM, kunye ne-silica gel ye-platinized, ixesha le-vulcanization liphezulu kwaye lingancitshiswa ngama-70%.
(5) I-arhente yokukhulula equkethe i-silica gel inqatshelwe ngokungqongqo.Ngaphandle koko, nokungcoliseka okuncinci kwejeli ye-silica kuya kukhokelela kwisehlo sokuncamathela komngundo.
Ixesha lokuposa: Dec-01-2022