Siza kukucacisela ubushushu obuphezulu-inkqubo yokuguga ye-silicone ugwebu lwemathiriyeli ukusuka kumgaqo ongundoqo{1}}wokukhula kobushushu obuphezulu kunye nendlela izinto ezintlanu eziphambili eziyichaphazela ngayo inkqubo yokwaluphala.
一,Iindlela ezimbini zokuguga ezingundoqo zeSiponji seSilicone
Ukuguga kwebhodi ye-silicone ye-foam phantsi kweemeko ze-thermal ngokusisiseko kubangelwa kwimiphumo edibeneyo yeendlela ezimbini ezihambelanayo eziboniswe kulo mfanekiso ungentla.
Indlela yeMichiza (i-thermal-ukuguga kweoksijini): Ubushushu obuphezulu kunye ne-oxygen ihlasela umqolo we-siloxane (-}Si{2}}O{3}}) kunye ne-methyl side chain (-CH₃), ebangela ukuqhekeka kwe-molecular chain (depolymerization) okanye ukunyuka kwe-crosslinking. Lo ngunobangela wengcambu yeekhemikhali zokonakala kwezinto okanye ukuqina.
Indlela yomzimba (ukusilela koxinzelelo lobushushu): Ubume obunogwebu obunogwebu bubuthathaka ngokwendalo. I-coefficients yokwandiswa kwe-thermal engafanelekanga yamacandelo ayo ivelisa uxinzelelo lwendawo ngexesha lokuhamba ngebhayisikili ye-thermal, esasaza ukusuka kwi-pores esengozini kakhulu ukuqalisa i-microcracks kwaye ekugqibeleni ibangele ukuwa kwesakhiwo.
2.{0}Uhlalutyo olunzulu lwemiba ethile enempembelelo
1. Isakhiwo se-polymer molecular (into emiselayo)
Uhlobo lwerabha ekrwada kunye nomxholo wevinyl: IVinyl yeyona nto iphambili yokusabela okunqamlezayo. Umxholo we-vinyl unquma ngokuthe ngqo ubuninzi kunye nokuzinza kwesakhiwo sothungelwano emva kwe-vulcanization. Irabha ekrwada enomxholo othile wevinyl idla ngokusetyenziselwa{2}}ubushushu bebhodi yesilicone yogwebu.
Umxholo oguquguqukayo ophantsi (ubalulekile): Njengoko bekuxoxiwe ngaphambili, iibhayisikile ze-D4/D5 ezishiyekileyo kunye nokufuma kusebenza "njengezinto ezibangela ukuguga". Ezi zixhobo zivame ukuqokelela kwiiseli ze-foam, ngokukhawuleza ukukhawuleza ukuchithwa kokutshatyalaliswa kwekhonkco eliphambili kumaqondo okushisa aphakamileyo. Ukulawula oku kungumsebenzi ophambili wokuqinisekisa ixesha elide ukusuka kumthombo.
2. Ukomeleza inkqubo (inkxaso yamathambo)
Uhlobo lokuzalisa kunye nokusabalalisa: I-silica yesigaba segesi yiyona nto iqinisayo. Indawo yayo ethile, inkqubo yonyango yendawo kunye nokusabalalisa okufanayo kwi-silica gel ichaza ngokuthe ngqo umphumo wokuqinisa. Ukusasazwa okungafaniyo kuya kwenza amanqaku oxinzelelo kwaye kube yindawo yokuqala yokuguga kunye nokuqhekeka.
3. Izongezo kunye neMiqulu (Uzinzo kunye noKhuselo)
Ubushushu - izongezo ezikwaziyo ukumelana nobushushu: Ukongezwa kobushushu{1}}izongezo ezixhathisayo ezifana ne-iron oxide (intsimbi ebomvu) kunye ne-cerium oxide zinokubamba ngokufanelekileyo iiradicals zasimahla kwaye zithintele inkqubo yokuguga kwe-oxygen ye-thermal, eyona nto ingundoqo ekuphuculeni ukuxhathisa ubushushu bexesha elide{2}.
Inkqubo ye-sulfurization: uhlobo kunye nomthamo we-peroxide vulcanizing agent iya kuchaphazela uhlobo kunye noxinaniso lwe-crosslinking bond. Uthungelwano oludibanisayo oluzinzile kwaye lushinyeneyo lunamandla okuchasa{1}}ukuguga.
4. Inkqubo yeMveliso (Ukuphunyezwa koLwakhiwo)
Ukufana kogwebu: Ubungakanani kunye nokuhanjiswa kwamaqamza kubalulekile. Isakhiwo seqamza esingalinganiyo siya kubangela ukuhanjiswa koxinzelelo olungalinganiyo xa kushushu, kwaye amaqamza amakhulu okanye iindawo ezibuthathaka ziya kutshatyalaliswa kuqala.
Umxholo wesulfure: Isulfure eyaneleyo inokubangela ukuba isakhiwo sothungelwano esingaphelelanga, ukunciphisa amandla omatshini, kunye nokuguga okukhawulezileyo. Isalfure egqithisileyo inokubangela{1}}kuqinisekiso lothungelwano, ukuncipha kwe-elasticity, kunye nokwanda kobunzima.
Thumela -ukulungiswa: Ezaneleyo inqanaba ezimbini -i-vulcanization (ukubhaka) ibalulekile ukuze kususwe ngokupheleleyo ii-volatiles ezishiyekileyo kunye neemolekyuli ezincinci, eziyimfuneko ekuzinziseni ukusebenza kwemveliso kunye nokuphucula ukumelana nobushushu.
5. Indawo yesicelo sangaphandle (uvavanyo lokugqibela)
Ubushushu bokusebenza kunye nobude bexesha: Izinga lokuguga liphindaphindeka ngokuphindwe kabini kwi-10-15℃yokwanda kobushushu. Ukusebenza ixesha elide kwiqondo lokushisa elilinganiselweyo liya kunciphisa kakhulu ixesha lokuphila.
Iqondo lokuhamba ngebhayisikile: Uxinzelelo lokudinwa kwe-thermal olubangelwa kukutshintshana rhoqo okushushu kunye nokubanda kuyingozi kakhulu kwisakhiwo esinemingxuma kunaleyo kwimekobume yobushushu obuqhubekayo.
Umendo wokusingqongileyo: Ukuqhagamshelana neoli, i-asidi, i-alkali okanye ukuvezwa ngokuqhubekayo kukukhanya kwe-ultraviolet kunye ne-ozone kuya kuba nefuthe le-synergistic kunye nobushushu kunye nokukhawuleza ukuguga.
ISanpu Silicone iphuhlise{0}imveliso ye-silicone ekwaziyo ukumelana nobushushu,cofa ukwazi ngakumbi.