O palasitika e fa'atatau i mea e fa'atatau i resini (po'o monomers e fa'apipi'i sa'o i le taimi o le fa'agaioiga), fa'aopoopo i mea fa'aopoopo e pei o palasitika, fa'atumu, lubricants, ma lanu, e mafai ona fa'alelei i foliga i le taimi o le gaosiga.
Uiga Autu o Palasitika:
① O le tele o palasitika e mama ma mautu i kemikolo, e tetee i le pala.
② Fa'ato'aga lelei.
③ Lelei manino ma ofuina le tetee.
④ Insulating meatotino ma le conductivity vevela maualalo.
⑤ E masani ona faigofie ona faʻapipiʻi, lanu, ma faʻagaioiga i tau maualalo.
⑥ O le tele o palasitika e le lelei le faʻafefe o le vevela, maualuga le faʻalauteleina o le vevela, ma e mu.
⑦ Fa'aletonu o le tino, fa'aletonu.
⑧ O le tele o palasitika e fa'aalia ai le leaga o le fa'atinoga o le vevela, ma fa'apalapala i tulaga malulu.
⑨ Aafiaga i le matua.
⑩ O nisi palasitika e faigofie ona solo i solvents.
Phenolic resinso loʻo faʻaaogaina lautele i FRP (Fiber-Reinforced Plastic) talosaga e manaʻomia ai FST (Afi, Asu, ma Toxicity) meatotino. E ui lava i ni tapula'a (aemaise lava le pala), o resini phenolic o lo'o tumau pea le vaega tele o resini fa'apisinisi, fa'atasi ai ma le gaosiga fa'aletausaga fa'aletausaga e lata i le 6 miliona tone. Phenolic resins e ofoina atu le tulaga sili ona mautu ma le faʻamaʻiina o vailaʻau, faʻamautu le mautu i totonu o le vevela o le 150-180°C. O nei meatotino, faʻatasi ma a latou tau-faʻatinoga lelei, faʻauluina lo latou faʻaaogaina pea i oloa FRP. O fa'aoga masani e aofia ai vaega o totonu o va'alele, uta uta, totonu ole ta'avale, fa'amau ma paipa fa'apalapala suau'u i fafo, mea fa'alava, mea fa'a'ese'ese, fa'apalapala roketi, ma isi oloa fa'atatau ile FST.
Ituaiga o Fiber-Reinforced Phenolic Composite
Fiber-faamalosia phenolic compositee aofia ai mea e faʻaleleia i alava tipi, ie, ma alava faifai pea. O alava vave tipi (fa'ata'ita'iga, fafie, cellulose) o lo'o fa'aogaina pea i mea fa'apipi'i phenolic mo fa'aoga eseese, ae maise vaega ta'avale pei o ufi o pamu vai ma vaega fe'ai. Fa'aonaponei phenolic fa'apipi'i fa'apipi'iina alava tioata, alava u'amea, po'o lata mai nei, alava kaponi. O resini phenolic o loʻo faʻaaogaina i mea faʻapipiʻi o novolac resins, faʻamalolo i le hexamethylenetetramine.
O mea e faʻaaogaina muamua e faʻaaogaina i le tele o faʻaoga, e pei o le RTM (Resin Transfer Molding), fausaga sanuisi faʻapipiʻi meli, puipuiga o le polo, paneta o totonu o vaalele, ma laina uta. O oloa fa'aauau e fa'amalosia alava e fa'atupuina e ala i le filament winding po'o le pultrusion. Ie ma fa'aauaucomposites fa'amalosia alavae masani ona fa'aoga vai-po'o solu-soluble resins phenolic. I tua atu o resole phenolics, o isi faiga faʻaoga faʻapitoa-e pei o benzoxazines, esters cyanate, ma le resini Calidur™ faatoa atiaʻe-o loʻo faʻaaogaina foi i le FRP.
Benzoxazine o se ituaiga fou o resini phenolic. E le pei o phenolics masani, lea e fesoʻotaʻi ai vaega mole mole e ala i alalaupapa methylene [-CH₂-], o le benzoxazines e fausia ai se fausaga cyclic. Benzoxazines e faigofie ona faʻapipiʻiina mai mea faʻapitoa (bisphenol poʻo novolac), amine muamua, ma formaldehyde. O la latou polymerization tatala mama e leai ni mea e maua mai ai poʻo ni mea faʻafefe, faʻaleleia le tulaga mautu o le oloa mulimuli. I le faaopoopo atu i le maualuga o le vevela ma le mumu, o le benzoxazine resins o loʻo faʻaalia mea e le o iai i phenolics masani, e pei o le maualalo o le susu ma le faʻaogaina o le dielectric mautu.
Calidur ™ o se isi augatupulaga, tasi-vaega, potu-temperature-stable polyarylether amide thermosetting resin atiaʻe e Evonik Degussa mo aerospace ma mea tau eletise. O lenei resini e fofo ile 140°C ile 2 itula, faatasi ai ma le vevela suiga tioata (Tg) ole 195°C. I le taimi nei, o loʻo faʻaalia e Calidur ™ le tele o faʻamanuiaga mo mea faʻapipiʻi maualuga: leai ni mea e faʻafefeteina, faʻaitiitia le faʻaogaina o le exothermic ma le faʻaitiitia i le taimi o togafitiga, malosi maualuga ma susu, faʻapipiʻi sili atu ma le malosi o le solo, ma sili ona faigata. O lenei resini fou e avea o se mea taugofie i le ogatotonu-i-maualuga-Tg epoxy, bismaleimide, ma cyanate ester resins i le aerospace, felauaiga, taʻavale, eletise / eletise, ma isi talosaga manaʻomia.
Taimi meli: Iuni-24-2025
