N'ụwa mmepụta ụfụfụ polyurethane, ihe na-akpali akpali na-arụ ọrụ dị oke mkpa n'ịchọpụta ihe onwunwe na ịdị mma nke ngwaahịa ikpeazụ. Otu n'ime ihe na-akpali akpali dị otú ahụ bụ BDMAEE (Bis(dimethylaminoethyl) ether), amine dị irè nke ukwuu nke a maara maka mmetụta dị ukwuu ya na usoro ụfụfụ na sistemụ polyurethane. Isiokwu a ga-enyocha usoro nke ihe na-akpali akpali amine, na-elekwasị anya kpọmkwem na BDMAEE, ma kọwaa otu ihe na-akpali akpali ndị a si emetụta mmepụta nke ụfụfụ polyurethane na-agbanwe agbanwe.
Usoro nke Ọrụ nkeNdị na-eme ka ihe dị n'ime Amine sie ikena Mmepụta Polyurethane
Mmepụta ụfụfụ polyurethane na-adabere na mmeghachi omume kemịkalụ dị n'etiti isocyanates na polyols. Enwere ike kewaa mmeghachi omume a ụzọ abụọ: mmeghachi omume "ụfụfụ" na mmeghachi omume "gelation". Mmeghachi omume ụfụfụ na-eme n'etiti isocyanates na mmiri, na-ebute mmepụta nke carbon dioxide, nke na-emepụta nhazi sel nke ụfụfụ ahụ. N'aka nke ọzọ, mmeghachi omume gelation gụnyere mmeghachi omume dị n'etiti isocyanates na polyols, na-eduga na nhazi nke netwọk polymer nke na-enye ụfụfụ ahụ iguzosi ike n'ezi ihe nhazi ya.
A na-ejikarị ihe ndị na-akpali amine dịka BDMAEE eme ihe iji mee ka mmeghachi omume ụfụfụ dịkwuo ngwa ngwa. Ha na-arụ ọrụ site n'ịbawanye ọsọ nke isocyanates na-emeghachi omume na mmiri, na-eduga na mwepụta carbon dioxide ngwa ngwa. Ngwa ngwa a dị oke mkpa iji hụ na ụfụfụ ahụ na-emepụta usoro sel achọrọ tupu netwọk polymer amalite, nke ga-ejide gas ma mebie ịdị mma nke ụfụfụ ahụ.
BDMAEE: Isi ihe na-akwalite ụfụfụ polyurethane na-agbanwe agbanwe
A na-eji BDMAEE akpọrọ ihe karịsịa n'imepụta ụfụfụ polyurethane na-agbanwe agbanwe, nke a na-ejikarị eme ihe n'ọtụtụ ebe site na ngwá ụlọ na oche ụgbọala ruo na mkpuchi na nkwakọ ngwaahịa. Mmetụta siri ike ya na mmeghachi omume ụfụfụ na-eme ka ọ bụrụ nhọrọ a na-ahọrọ n'ọnọdụ a. Ọrụ dị elu nke BDMAEE na-eme ka ụfụfụ ahụ nweta mgbasawanye dị mkpa na nhazi sel otu, nke dị oke mkpa maka arụmọrụ nke ụfụfụ na-agbanwe agbanwe.
Agbanyeghị, a ga-eji nlezianya hazie mmetụta siri ike nke BDMAEE iji zere oke ọsọ, nke nwere ike ibute ntụpọ na ụfụfụ ahụ, dịka nnukwu ma ọ bụ nhazi sel na-adịghị mma. A na-enweta nguzozi a site na ijikọta BDMAEE na ihe mgbakwunye ndị ọzọ ma ọ bụ ịgbanwe usoro ahụ iji dozie ọnụego mmeghachi omume ma nweta njirimara ụfụfụ achọrọ.
Na nchịkọta, BDMAEE bụ ihe tozuru oke ma dị irèihe mkpalimaka mmepụta nke ụfụfụ polyurethane na-agbanwe agbanwe. Ọrụ ya n'ime ka mmeghachi omume ụfụfụ dịkwuo ngwa ngwa dị oke mkpa n'ịmepụta ngwaahịa ụfụfụ dị elu ma na-agbanwe agbanwe. Ịghọta usoro ọrụ ya na-enye ndị nrụpụta ohere imeziwanye usoro ha ma nweta nsonaazụ kacha mma na mmepụta ụfụfụ polyurethane.
Oge ozi: Ọgọst-12-2024