Kedu ihe kpatara eji eji silicone mmiri mee ihe n'ọtụtụ ebe?

1.Mmeghe nke mmiri mmiri silicone roba na mgbakwunye na ịkpụzi

mmiri mmiri silicone roba na mgbakwunye ịkpụzi bụ nke vinyl polysiloxane bụ isi polymer, polysiloxane na Si-H bond dị ka cross njikọ gị n'ụlọnga, na ọnụnọ nke platinum catalyst, na ụlọ okpomọkụ ma ọ bụ kpo oku n'okpuru cross njikọ vulcanization nke klas silicone. ihe. Dị iche na condensed silicone roba, ịkpụzi mmiri mmiri silicone vulcanization usoro adịghị emepụta site-ngwaahịa, obere shrinkage, miri vulcanization na enweghị corrosion nke kọntaktị ihe. Ọ nwere uru nke oke okpomọkụ dị iche iche, nguzogide kemịkalụ mara mma na nguzogide ihu igwe, ọ nwekwara ike ịrapagidesi ike na elu dị iche iche. Ya mere, e jiri ya tụnyere silicone mmiri mmiri condensed, mmepe nke mmiri mmiri silicone ịkpụzi ngwa ngwa. Ka ọ dị ugbu a, a na-ejikarị ya eme ihe na ngwa eletrọnịkị, igwe, ihe owuwu, ahụike, ụgbọ ala na mpaghara ndị ọzọ.

2. Isi ihe

Polymer isi

A na-eji polysiloxane abụọ ndị a na-esote nke nwere vinyl dị ka ihe ndabere maka mgbakwunye silicone mmiri mmiri. Nkesa arọ molekụla ha dị obosara, n'ozuzu site na puku kwuru puku ruo 100,000-200,000. Ihe kachasị eji eme ihe maka silicone mmiri mmiri bụ α, ω -divinylpolydimethylsiloxane. Achọpụtara na ịdị arọ molekụla na ọdịnaya vinyl nke polymers bụ isi nwere ike ịgbanwe njirimara nke silicone mmiri mmiri.

onye na-emekọrịta ihe

Onye na-ahụ maka crosslinking eji agbakwunye silicone mmiri mmiri bụ organic polysiloxane nke nwere ihe karịrị 3 Si-H bonds na molecule, dị ka linear methyl-hydropolysiloxane nwere Si-H otu, mgbanaka methyl-hydropolysiloxane na MQ resin nwere Si-H otu. Ihe a na-ejikarị eme ihe bụ methylhydropolysiloxane linear nke usoro ndị a. Achọpụtara na ihe eji arụ ọrụ nke silica gel nwere ike gbanwee site n'ịgbanwe ọdịnaya hydrogen ma ọ bụ nhazi nke onye na-ejikọta obe. Ọ chọpụtara na ọdịnaya hydrogen nke onye na-eme ihe na-emekọrịta ihe na-adaba na ike nkwụsị na ike nke silica gel. Gu Zhuojiang et al. nwetara mmanụ silicone nke nwere hydrogen nwere usoro dị iche iche, ịdị arọ molekụla dị iche iche na ọdịnaya hydrogen dị iche iche site n'ịgbanwe usoro njikọ na usoro, wee jiri ya dị ka onye na-ahụ maka crosslinking synthesize na tinye silicone mmiri mmiri.

catalyzer

Iji mee ka arụmọrụ catalytic dị mma nke ndị na-emepụta ihe, a kwadebere ogige platinum-vinyl siloxane, platinum-alkyne complexes na nitrogen-modified platinum complexes. Na mgbakwunye na ụdị onye na-eme ihe, ọnụ ọgụgụ nke ngwaahịa silicone mmiri mmiri ga-emetụtakwa arụmọrụ. Ọ chọpụtara na ịba ụba nke ntinye nke platinum catalyst nwere ike ịkwalite mmeghachi omume njikọ n'etiti otu methyl ma gbochie ire ere nke agbụ isi.

Dị ka ekwuru n'elu, usoro vulcanization nke silicone ihe mgbakwunye ọdịnala bụ mmeghachi omume hydrosilylation n'etiti polymer isi nwere vinyl na polymer nwere njikọ hydrosilylation. Ihe mgbakwunye ihe mgbakwunye silicone nke ọdịnala na-achọkarị ịkpụzi siri ike iji rụpụta ngwaahịa ikpeazụ, mana teknụzụ nrụpụta ọdịnala a nwere ọghọm dị oke ọnụ, ogologo oge na ihe ndị ọzọ. Ngwaahịa anaghị emetụtakarị ngwaahịa eletrọnịkị. Ndị nchọpụta ahụ chọpụtara na enwere ike ịkwadebe usoro silicas nwere ihe ndị dị elu site na usoro ọgwụgwọ ọhụrụ site na iji mercaptan - double bond supplement liquid silicas. Ngwongwo ya dị oke mma, nkwụsi ike ọkụ na nnyefe ọkụ nwere ike ime ka etinye ya n'ọrụ na mpaghara ọhụrụ. Dabere na mmeghachi omume njikọ mercapto-ene n'etiti mercaptan arụ ọrụ polysiloxane na vinyl kwụsịrị polysiloxane nwere ịdị arọ molekụla dị iche iche, a kwadebere silicone elastomer nwere ike na-agbanwe agbanwe na akụrụngwa arụ ọrụ. Elastomers e biri ebi na-egosi mkpebi mbipụta dị elu na ihe eji arụ ọrụ dị mma. The elongation na nkwụsịtụ nke silicone elastomers nwere ike iru 1400%, nke dị nnọọ elu karịa kọrọ UV ọgwụgwọ elastomers na ọbụna elu karịa ndị kasị agbatị thermal ọgwụgwọ silicone elastomers. Mgbe ahụ, a na-etinye elastomer silicone ultra-stretchable na hydrogels nke nwere carbon nanotubes dobere iji kwadebe ngwaọrụ eletrọnịkị nwere ike ịgbatị. Silicone a na-ebipụta na nhazi nwere atụmanya ngwa sara mbara na robots dị nro, ndị na-eme mgbanwe na-agbanwe agbanwe, ihe ntinye ahụike na mpaghara ndị ọzọ.