Kune akawanda marudzi e organosilicon, pakati peiyo silane coupling agents uye crosslinking agents akafanana. Izvo zvinowanzoomera kune avo vachangobva kusangana ne organosilicon kuti vanzwisise. Chii chiri kubatana uye musiyano pakati pezviviri izvi?
silane coupling agent
Imhando ye organic silicon komboni ine maviri akasiyana emakemikari zvimiro mumamorekuru ayo, anoshandiswa kuvandudza iyo chaiyo yekubatanidza simba pakati pemapolymer uye inorganic zvinhu. Izvi zvinogona kureva zvese kuvandudzwa kwekunamatira kwechokwadi uye kukwidziridzwa kwekunyorova, rheology, uye zvimwe zvekushandisa. Coupling agents anogona zvakare kuve nekugadzirisa dhizaini dunhu rekusimudzira muganho pakati peiyo organic uye inorganic zvikamu.
Naizvozvo, silane coupling agents anoshandiswa zvakanyanya mumaindasitiri akadai seanonamira, machira uye ingi, rabha, casting, fiberglass, tambo, machira, mapurasitiki, mafirita, epamusoro kurapwa, nezvimwe.
Zvakajairika silane coupling agents zvinosanganisira:
Sulfur ine silane: bis - [3- (triethoxysilane) - propyl] - tetrasulfide, bis - [3- (triethoxysilane) - propyl] - disulfide
Aminosilane: gamma aminopropyltriethoxysilane, N – β – (aminoethyl) – gamma aminopropyltrimethoxysilane
Vinylsilane: Ethylenetriethoxysilane, Ethylenetrimethoxysilane
Epoxy silane: 3-glycidoxypropyltrimethoxysilane
Methacryloyloxysilane: gamma methacryloyloxypropyltrimethoxysilane, gamma methacryloyloxypropyltriisopropoxysilane
Iyo nzira yekuita ye silane coupling agent:
Silane crosslinking agent
Silane ine maviri kana anopfuura silicon anoshanda mapoka anogona kuita senge bhiriji mumiriri pakati pemutsara mamorekuru, achibvumira akawanda mutsara mamorekuru kana zvinyoro branched macromolecules kana mapolymers kuti abatanidze uye crosslink mune matatu-dimensional network chimiro, kusimudzira kana kuyananisira kuumbwa kwecovalent kana ionic zvisungo. pakati pe polymer cheni.
Crosslinking agent ndiyo yakakosha chikamu cheimwe chikamu chekamuri tembiricha yakasvibiswa silicone rubber, uye ndiyo hwaro hwekuona iyo muchinjiko-yekubatanidza mashini uye kupatsanura zita rechigadzirwa.
Zvinoenderana neyakasiyana zvigadzirwa zve condensation reaction, imwechete chikamu chekamuri tembiricha vulcanized silicone rubber inogona kuiswa mumhando dzakasiyana senge deacidification type, ketoxime type, dealcoholization type, deamination type, deamidation type, uye deacetylation type. Pakati pavo, marudzi matatu ekutanga ndiwo zvigadzirwa zvakajairika zvinogadzirwa pamwero mukuru.
Kutora methyltriacetoxysilane crosslinking agent semuenzaniso, nekuda kweiyo condensation reaction chigadzirwa chiri acetic acid, inonzi deacetylated kamuri tembiricha vulcanized silicone rabha.
Kazhinji kutaura, crosslinking agents uye silane coupling agents zvakasiyana, asi pane zvisizvo, senge alpha series silane coupling agents inomiririrwa nephenylmethyltriethoxysilane, iyo yakashandiswa zvakanyanya muchikamu chimwe chete dealcoholised kamuri tembiricha vulcanized silicone rabha.
Common silane crosslinkers dzinosanganisira:
Dehydrated silane: alkyltriethoxyl, methyltrimethoxy
Deacidification type silane: triacetoxy, propyl triacetoxy silane
Ketoxime type silane: Vinyl tributone oxime silane, Methyl tributone oxime silane
Nguva yekutumira: Jul-15-2024