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Kedu ihe kacha mma mmanụ silicone nke anyị na -amaghị?

A na -emepụta ọtụtụ ngwaahịa na ndụ site na ngwaahịa kemịkal. Ngwaahịa ndị a na -eji uru ha maka ojiji anyị. Mmanụ Silicone na -ezokarị aka na ngwaahịa polysiloxane kwụ n'ahịrị nke na -ejigide ọnọdụ mmiri mmiri n'ime ụlọ. Ọ na-abụkarị ụcha (ma ọ bụ edo edo edo), enweghị isi, adịghị egbu egbu, mmiri na-anaghị agbanwe agbanwe, enweghị ike ịgbari na mmiri, methanol, ethylene glycol, yana dakọtara na benzene. , Dimethyl ether, carbon tetrachloride ma ọ bụ kerosene na -agbari onwe ha, na -agbari ntakịrị na acetone, dioxane, ethanol na butanol. Ka m webata njirimara kacha mma nke mmanụ silicone.

Otu. ezigbo nguzogide okpomọkụ

Ebe ọ bụ na eriri igwe polysiloxane mejupụtara -Si-O-Si- bonds, ọ nwere usoro yiri nke polymer inorganic, na ike njikọ ya dị elu nke ukwuu, yabụ na ọ nwere ezigbo nguzogide okpomọkụ.

Abụọ. Ezigbo nguzogide oxidation na nguzogide ihu igwe

Atọ. mkpuchi ọkụ eletrik dị mma

Silicone mmanụ nwere ezigbo ihe ọkụ ọkụ dielectric, na njirimara ọkụ eletrik ya na -agbanwe obere na mgbanwe okpomọkụ na ugboro ole. Igwe ọkụ dielectric na -ebelata mgbe okpomọkụ na -abawanye, mana mgbanwe ahụ pere mpe. Ike nke mmanụ silicone dị ala, ọ na -abawanye site na ịrị elu okpomoku, mana enweghị iwu na mgbanwe ugboro. Resistivity olu na -ebelata ka ọnọdụ okpomọkụ na -ebili.

Anọ. ezigbo hydrophobicity

Ọ bụ ezie na isi yinye nke   Ihe mejupụtara silicone bụ njikọ Si-O pola, otu alkyl na-abụghị polar nke dị n'akụkụ yinye na-eche ihu, na-egbochi ụmụ irighiri mmiri ịbanye n'ime ma na-arụ ọrụ hydrophobic. Ọdịiche dị n'etiti mmanụ silicone na mmiri bụ ihe dịka 42 dyne/cm. Mgbe ị na -agbasa na iko, n'ihi mmetọ mmiri nke mmanụ silicone, a na -etolite akụkụ kọntaktị nke ihe dịka 103oC, nke a ga -eji tụnyere wax paraffin.

Ise. ọnụọgụ viscosity-okpomọkụ dị obere

Viscosity nke mmanụ silicone dị ala, ọ na -agbanwekwa ntakịrị na ọnọdụ okpomọkụ, nke metụtara usoro helic nke mkpụrụ mmanụ mmanụ silicone. Silicone mmanụ nwere njirimara viscosity-okpomọkụ kacha mma n'etiti mmanụ lubricants dị iche iche. Njirimara a nke mmanụ silicone dị nnukwu mkpa na akụrụngwa na -ebelata.

Isii. nnukwu mkpakọ nguzogide

N'ihi njirimara usoro helical nke mkpụrụ mmanụ mmanụ silicone na nnukwu anya dị n'etiti ụmụ irighiri ihe ahụ, ọ nwere nguzogide mkpakọ dị elu. N'iji njirimara silicone mmanụ a, enwere ike iji ya dị ka isi mmiri mmiri. Ọ bụrụ na e jiri ya tụnyere mmiri mmiri, igwe nwere ike ibelata nke ukwuu.

Asaa. ala erughị ala

Esemokwu ala dị ala bụ njirimara mmanụ silicone. Mbara ala dị ala pụtara ọrụ elu dị elu. Ya mere, mmanụ silicone nwere ọmarịcha defoaming na mgbochi ụfụfụ, ihe dịpụrụ adịpụ site na ihe ndị ọzọ, yana ihe ndị na-ete mmanụ.

Asatọ. ndị na-adịghị egbu egbu, ndị na-atọ ụtọ na ndị na-adịghị ahụ anya

"Site na nlele ahụike, polymer silicone bụ otu n'ime ogige anaghị arụ ọrụ ama ama. Simethicone adịghị n'ime ihe dị ndụ, ọ nweghịkwa mmeghachi omume anụ ahụ. Ya mere, ejirila ha mee ihe na ngalaba dịka ịwa ahụ na ọgwụ ime, ọgwụ, nri na ihe ntecha.

Itoolu. ezigbo mmanu

Silicone mmanụ nwere ọtụtụ ọmarịcha ihe dị ka mmanụ mmanye, dị ka ebe ọkụ ọkụ dị elu, ebe na -ajụ oyi, nkwụsi ike ọkụ, obere viscosity na -agbanwe na ọnọdụ okpomọkụ, enweghị nzere nke ọla, enweghị mmetụta ọ bụla na roba, plastik, mkpuchi, ihe nkiri na -ese ihe, na ihe dị ala. elu erughị ala. Ọ dị mfe ịgbasa n'elu igwe na njirimara ndị ọzọ. Iji meziwanye nchara nchara na nchara nke mmanụ siliki, enwere ike ịgbakwunye ihe mgbakwunye mmanu nke nwere ike imehie na mmanụ silicon. Iwebata otu chlorophenyl n'agụ siloxane ma ọ bụ dochie otu trifluoropropylmethyl maka otu dimethyl nwere ike imeziwanye ihe na -eme mmanụ nke mmanụ silicone.

Iri. Njirimara Chemical

Silicone mmanụ adịchaghị arụ ọrụ n'ihi na njikọ Si-C kwụ chịm. Mana oxidants siri ike dị mfe ịmekọrịta, ọkachasị na oke okpomọkụ. Silicone mmanụ na -eme ihe ike na klorine gas, ọkachasị mmanụ silicone methyl. Mgbe ụfọdụ a ga -enwe mmeghachi omume mgbawa. Ntọala siri ike ma ọ bụ acid siri ike na-agbaji njikọ Si-O. Sulfuric acid a na -etinye uche na -eme ngwa ngwa na obere okpomọkụ, na -agbaji eriri siloxane wee kegide ya. N'akụkụ a, mmanụ silicone nke nwere nnukwu alkane dị iche iche na otu phenyl kwụsiri ike, mana sọlfọ acid ga-agbaji njikọ benzene-silicon nke otu phenyl wee hapụ benzene.

 


Oge ezipụ: Aug-23-2021