Litaba

Ho na le mefuta e mengata ea organosilicon, eo har'a eona li-agent tsa coupling tsa silane le li-crosslinking li batlang li tšoana. Hangata ho thata ho ba sa tsoa kopana le organosilicon ho utloisisa. Kamano le phapang pakeng tsa tse peli ke efe?
silane coupling agent
Ke mofuta oa motsoako oa silicon o nang le likarolo tse peli tse fapaneng tsa lik'hemik'hale limolek'huleng tsa oona, o sebelisetsoang ho ntlafatsa matla a sebele a ho kopanya pakeng tsa li-polymer le thepa ea tlhaho. Sena se kanna sa bua ka ntlafatso ea ho khomarela 'nete le ntlafatso ea metsi, rheology, le lisebelisoa tse ling tsa ts'ebetso. Li-coupling agents li ka boela tsa ba le phello ea ho fetola sebaka sa sebopeho ho ntlafatsa moeli o pakeng tsa mekhahlelo ea tlhaho le ea tlhaho.
Ka hona, li-silane coupling agents li sebelisoa haholo liindastering tse kang likhomaretsi, likoatipa le li-inks, rabara, casting, fiberglass, likhoele, masela, polasetiki, li-filler, kalafo ea holim'a metsi, jj.

Li-agent tse tloaelehileng tsa ho kopanya silane li kenyelletsa:
Sebabole se nang le 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

Mokhoa oa ts'ebetso oa silane coupling agent:
Silane crosslinking agent
Silane e nang le lihlopha tse peli kapa ho feta tse sebetsang tsa silicon e ka sebetsa e le moemeli oa borokho lipakeng tsa limolek'hule tse melang, e lumellang limolek'hule tse nang le mela e mengata kapa li-macromolecules kapa li-polymers tse nang le makala a bonolo hore li tlamahane le ho kopanya sebopeho sa marang-rang se nang le mahlakore a mararo, ho khothaletsa kapa ho kenella ho thehoeng ha litlamo tsa covalent kapa ionic. pakeng tsa liketane tsa polymer.
Crosslinking ke karolo ea mantlha ea rabara ea silicone e nang le mocheso oa kamore e le 'ngoe,' me ke motheo oa ho khetholla mochine o kopanyang le ho reha lebitso la sehlahisoa.
Ho ea ka lihlahisoa tse fapaneng tsa karabelo ea condensation, rabara ea mocheso oa kamore e le 'ngoe ea vulcanized silicone e ka aroloa ka mefuta e fapaneng joalo ka mofuta oa deacidification, mofuta oa ketoxime, mofuta oa dealcoholization, mofuta oa deamination, mofuta oa deamidation, le mofuta oa deacetylation. Har'a bona, mefuta e meraro ea pele ke lihlahisoa tse akaretsang tse hlahisoang ka tekanyo e kholo.

Ho nka mohlala oa methyltriacetoxysilane crosslinking agent, ka lebaka la sehlahisoa sa condensation reaction e le acetic acid, e bitsoa "deacetylated room" rabara e vulcanized silicone.
Ka kakaretso, li-crosslinking agents le li-silane coupling agents li fapane, empa ho na le mekhelo, joalo ka alpha series silane coupling agents e emeloang ke phenylmethyltriethoxysilane, e 'nileng ea sebelisoa haholo karolong e le 'ngoe ea mocheso oa kamore e nang le rabara e silafalitsoeng.

Li-crosslinkers tse tloaelehileng tsa silane li kenyelletsa:

Silane e se nang metsi: alkyltriethoxyl, methyltrimethoxy
Silane ea mofuta oa deacidification: triacetoxy, propyl triacetoxy silane
Ketoxime type silane: Vinyl tributone oxime silane, Methyl tributone oxime silane