A na-agwakọta rọba silicone mmiri (LSR) na onye na-eme ụfụfụ (anụ ahụ ma ọ bụ kemịkalụ), na n'oge usoro ịkpụzi ọkụ na vulcanization na ebu, onye na-eme ụfụfụ na-emepụta gas, si otú ahụ na-etolite otu na ọmarịcha usoro ụfụfụ microcellular.
1. Nkwadebe ihe eji eme ihe:
Jiri rọba silicone mmiri mmiri (ihe A&B) abụọ-. A na-ejikarị ndị na-ebubata ngwaahịa akwado {{2}The base roba compound. Ngwakọta A na-enwekarị ihe mkpali, na akụkụ B nwere ihe na-emekọrịta ihe. Dabere na arụmọrụ chọrọ nke ngwaahịa ikpeazụ (dị ka njupụta, ike na agba), ọ nwere ike ịdị mkpa ịgbakwunye pastes agba, ihe ndị na-eduzi okpomọkụ (dị ka alumina), ma ọ bụ ire ọkụ na ihe ndị ọzọ na-agbakwunye na ntọala roba. A na-ejikọta ihe mgbakwunye ndị a n'otu n'otu na Ngwa A ma ọ bụ Ngwa B tupu oge eruo.
2. Okwu mmeghe nke onye na-asụ ụfụfụ (iwebata onye na-asụ ụfụfụ)nke a bụ njikọ kacha mkpa. Dị ka ụdị onye na-afụ ụfụfụ, a na-ekewa ya na ụzọ teknụzụ abụọ:
Usoro: Ịmepụta CO₂ supercritical: Liquid CO₂ na-ekpo ọkụ na nrụgide na steeti dị oke egwu site na akụrụngwa raara onwe ya nye. Mita na ntụtụ: Site na igwe nrụnye igwe dị elu dị elu{1}, a na-agbaba ụfọdụ CO₂ dị egwu n'ime ụzọ mmiri mmiri silicone. Ngwakọta static: Ngwakọta A (nke nwere scCO₂) na akụrụngwa B na-agwakọta nke ọma mgbe ị na-agafe na igwekota static. Ka ọ dị ugbu a, scCO₂ na-agbaze n'otu n'otu na ogige rọba n'okpuru nnukwu nrụgide, na-eme otu - ngwakọta otu. A na-edobe usoro ahụ dum n'okpuru nrụgide dị elu iji gbochie CO₂ ịgbanarị n'oge.
b) Ihe na-eme ụfụfụ kemịkalụ:Jiri ọgwụ ụfụfụ kemịkalụ nwere ike ire ere, dị ka azodicarbonamide (onye na-eme ụfụfụ AC). Usoro: Tupu - gwakọta ntụ ntụ na-eme ụfụfụ nke ọma na Component A ma ọ bụ Ngwa B n'ime ngwaọrụ mkpali. Iji hụ na ngwaahịa ahụ enweghị ntụpọ-, a na-achọkarị idebe oghere mgbe agwakọtara ya iji wepụ ikuku ewepụtara n'oge usoro mkpali.
3.Vulcanization na ụfụfụ:
Ọfụfụ nke anụ ahụ: Mgbe etinyere ngwongwo rọba n'ime oghere ebu, a na-ahapụ nrụgide ahụ, na CO₂ nke dị egwu gbazere na ngwongwo rọba na-agbaze ngwa ngwa, na-akpụ afụ. Ka ọ dị ugbu a, okpomoku dị elu na-ebute vulcanization na gafere{1}njikọ mmeghachi omume na rọba silicone, igbachi usoro afụ na-akpụkwa mkpụrụ ndụ.
Ọfụfụ kemịkalụ: Igwe ọkụ dị elu nke ebu ahụ na-eme ka onye na-emepụta ụfụfụ kemịkal na-emebi, na-emepụta gas (dị ka N₂, CO₂). N'otu oge ahụ, rọba silicone na-emebi emebi, a na-etinyekwa gas ndị ahụ na netwọk roba e kpụrụ, na-eke sel.
4. Nhazi:Mgbe emechara okirikiri ịfụfụ vulcanization (na-abụkarị n'ime iri sekọnd ruo ọtụtụ nkeji), mepee ebu ahụ wee wepụ ngwaahịa ahụ. N'ihi obere viscosity nke LSR, ngwaahịa na-adịkarịghị arapara na ebu ma dị mfe ịkwatu.
5. Bipute - ọgwụgwọ (vulcanization nke abụọ)(Bipute - Ngwọta) ngwaahịa ndị a na-efụfụ mgbe a kwatuchara, ọ na-achọkarị ka a na-eme ya ozi{1}}ịgwọ n'ime oven na okpomọkụ dị ihe dị ka ogo 150 degrees - 200 maka awa 1-2.