Nūhou

Nui nā ʻano o ka organosilicon, ma waena o nā mea hoʻohui silane a me nā mea hoʻohui crosslinking he ʻano like. He mea paʻakikī loa ka hoʻomaopopo ʻana i ka poʻe i hui pū me ka organosilicon. He aha ka pilina a me ka ʻokoʻa ma waena o lāua?
mea hoʻopili silane
He ʻano ia o ka huila silika organik i loaʻa i ʻelua mau waiwai kemika ʻokoʻa i loko o kāna mau mole, i hoʻohana ʻia e hoʻomaikaʻi i ka ikaika hoʻopaʻa maoli ma waena o nā polymers a me nā mea inorganic. E pili ana paha kēia i ka hoʻomaikaʻi ʻana i ka pili pono a me ka hoʻonui ʻana i ka wettability, rheology, a me nā mea hana ʻē aʻe. Hiki i nā mea hoʻohui hui ke loaʻa ka hopena hoʻololi i ka ʻāpana interface e hoʻomaikaʻi ai i ka papa palena ma waena o nā pae organik a me nā ʻano ʻano.
No laila, hoʻohana nui ʻia nā mea hoʻohui silane i nā ʻoihana e like me nā adhesives, coatings and inks, rubber, casting, fiberglass, cables, textiles, plastics, fillers, surface treatments, etc.

ʻO nā mea hoʻohui hoʻohui silane maʻamau:
Sulfur i loko o ka silane: bis – [3- (triethoxysilane) - propyl] – tetrasulfide, bis – [3- (triethoxysilane) - propyl] – disulfide
Aminosilane: gamma aminopropyltriethoxysilane, N – β – (aminoethyl) – gamma aminopropyltriethoxysilane
Vinylsilane: Ethylenetriethoxysilane, Ethylenetrimethoxysilane
Epoxy silane: 3-glycidoxypropyltrimethoxysilane

Methacryloyloxysilane: gamma methacryloyloxypropyltrimethoxysilane, gamma methacryloyloxypropyltriisopropoxysilane

ʻO ke ʻano o ka hana o ka silane coupling agent:
He mea hoʻohui Silane
Hiki i ka Silane i loko o ʻelua a ʻoi aku mau pūʻulu hana silicon ke hana ma ke ʻano he mea hoʻopili i waena o nā molekole laina, e ʻae ana i nā molekole laina he nui a i ʻole nā ​​macromolecules māmā a i ʻole nā ​​polymers e hoʻopaʻa a hoʻopaʻa ʻia i loko o kahi hoʻolālā pūnaewele ʻekolu-dimensional, e hoʻolaha ana a i ʻole ka mediating i ka hoʻokumu ʻana o nā covalent a ionic. ma waena o nā kaulahao polymer.
Crosslinking agent ka mea nui o ka lumi hoʻokahi lumi wela vulcanized silicone rubber, a ʻo ia ke kumu no ka hoʻoholo ʻana i ke ʻano hoʻohui cross-linking a me ka hoʻopaʻa inoa ʻana o ka huahana.
E like me nā huahana like ʻole o ka hopena condensation, hiki ke hoʻokaʻawale ʻia kahi lumi lumi lumi hoʻokahi vulcanized silicone rubber i nā ʻano like ʻole e like me ke ʻano deacidification, ketoxime type, dealcoholization type, deamination type, deamidation type, a me deacetylation type. Ma waena o lākou, ʻo nā ʻano mua ʻekolu he mau huahana maʻamau i hana ʻia ma kahi ʻano nui.

ʻO ka lawe ʻana i ka methyltriacetoxysilane crosslinking agent ma ke ʻano he laʻana, ma muli o ka condensation reaction product he acetic acid, ua kapa ʻia ʻo ia ka deacetylated room temperature vulcanized silicone rubber.
ʻO ka mea maʻamau, ʻokoʻa nā mea hoʻohui crosslinking a me nā mea hoʻohui silane, akā aia kekahi mau ʻokoʻa, e like me ka alpha series silane coupling agents i hōʻike ʻia e phenylmethyltriethoxysilane, i hoʻohana nui ʻia i loko o ka mea hoʻokahi dealcoholized lumi wela vulcanized silicone rubber.

ʻO nā crosslinkers silane maʻamau ka:

Silane maloʻo: alkyltriethoxyl, methyltrimethoxy
Deacidification type silane: triacetoxy, propyl triacetoxy silane
Ketoxime type silane: Vinyl tributone oxime silane, Methyl tributone oxime silane