Gịnị mere e ji eji silicone mmiri mmiri eme ihe n'ọtụtụ ebe dị iche iche?

1. Mmeghe nke roba silicone mmiri mmiri na mgbakwunye ịkpụzi

Ejiri vinyl polysiloxane mee rọba silicone mmiri mmiri nke nwere ihe mgbakwunye, polysiloxane nwere njikọ Si-H dị ka ihe njikọ obe, n'ihu ihe na-akpali platinum, na okpomọkụ ụlọ ma ọ bụ kpo oku n'okpuru ihe njikọ obe nke klas nke ihe silicone. N'adịghị ka roba silicone mmiri ...

2. Isi ihe dị na ya

Isi Polymer

A na-eji polysiloxane abụọ a nwere vinyl eme ihe dị ka polima ntọala maka ịgbakwunye silicone mmiri mmiri. Nkesa ibu molekul ha sara mbara, n'ozuzu site na puku kwuru puku ruo 100,000-200,000. Polima ntọala a na-ejikarị eme ihe maka silicone mmiri mmiri mgbakwunye bụ α,ω -divinylpolydimethylsiloxane. A chọpụtara na ibu molekul na ọdịnaya vinyl nke polima bụ isi nwere ike ịgbanwe njirimara nke silicone mmiri mmiri.

onye na-ejikọ ihe na-eme ka ihe dị iche iche dị

Ihe eji ejikọta ihe eji ejikọta ihe eji agwakọta ihe eji agwakọta ihe bụ polysiloxane organic nke nwere ihe karịrị njikọ Si-H atọ na molekul ahụ, dịka linear methyl-hydropylsiloxane nke nwere otu Si-H, mgbanaka methyl-hydropylsiloxane na MQ resin nke nwere otu Si-H. Ihe a na-ejikarị eme ihe bụ linear methylhydropylsiloxane nke nhazi ndị a. Achọpụtara na enwere ike ịgbanwe ihe onwunwe nke silica gel site na ịgbanwe ọdịnaya hydrogen ma ọ bụ nhazi nke ihe njikọ cross. Ha chọpụtara na ọdịnaya hydrogen nke ihe njikọ cross kwekọrọ na ike nrụgide na ike nke silica gel. Gu Zhuojiang et al. nwetara mmanụ silicone nwere hydrogen nke nwere nhazi dị iche iche, ibu molekul dị iche iche na ọdịnaya hydrogen dị iche iche site na ịgbanwe usoro na usoro mmepụta, ma jiri ya dị ka ihe njikọ crosslink iji mepụta ma tinye silicone mmiri mmiri.

ihe na-eme katalyza

Iji melite arụmọrụ nke ihe na-akpali akpali, a kwadebere ngwakọta platinum-vinyl siloxane, ngwakọta platinum-alkyne na ngwakọta platinum agbanwere agbanwe nke nitrogen. Na mgbakwunye na ụdị ihe na-akpali akpali, ọnụọgụ ngwaahịa silicone mmiri mmiri ga-emetụtakwa arụmọrụ. Ọ chọpụtara na ịbawanye njupụta nke ihe na-akpali akpali platinum nwere ike ịkwalite mmeghachi omume njikọ n'etiti otu methyl ma gbochie mmebi nke isi yinye.

Dịka ekwuru n'elu, usoro vulcanization nke silicone mmiri mgbakwunye ọdịnala bụ mmeghachi omume hydrosilylation n'etiti polymer nke nwere vinyl na polymer nwere njikọ hydrosilylation. Nhazi ihe mgbakwunye silicone mmiri ọdịnala na-achọkarị ebu siri ike iji mepụta ngwaahịa ikpeazụ, mana teknụzụ mmepụta ọdịnala a nwere ọghọm nke ọnụ ahịa dị elu, ogologo oge, na ihe ndị ọzọ. Ngwaahịa anaghị emetụta ngwaahịa eletrọnịkị. Ndị nchọpụta chọpụtara na enwere ike ịkwadebe usoro silica nwere ihe onwunwe dị elu site na iji usoro ọgwụgwọ ọhụrụ site na iji mercaptan - njikọta abụọ nke ihe mgbakwunye mmiri mmiri. Njirimara igwe ya dị mma, nkwụsi ike okpomọkụ na nnyefe ọkụ nwere ike ime ka ọ tinye n'ọrụ n'ọhịa ọhụrụ. Dabere na mmeghachi omume njikọ mercapto-ene n'etiti polysiloxane nke mercaptan na-arụ ọrụ na polysiloxane vinyl kwụsịrị nwere ibu molekul dị iche iche, a kwadebere silicone elastomers nwere ike ịgbanwe agbanwe na ihe onwunwe igwe. Elastomers ebipụtara na-egosi mkpebi mbipụta dị elu na ihe onwunwe igwe dị mma. Ogologo oge a na-agbatị na silicone elastomers nwere ike iru 1400%, nke dị elu karịa nke a kọrọ na UV e ji agwọ ọrịa na ọbụna karịa nke silicone elastomers kachasị agbatị. E mesịa, e tinyere silicone elastomers nke a na-agbatị agbatị na hydrogels e tinyere na carbon nanotubes iji kwadebe ngwaọrụ eletrọnịkị a na-ebipụ ma na-arụ ọrụ nke ọma. Silicone a na-ebipụ ma na-arụ ọrụ nwere ike itinye n'ọrụ sara mbara na robot dị nro, ihe na-emegharị emegharị, ihe ndị e tinyere n'ahụike na mpaghara ndị ọzọ.