Resin ea thermosetting ke eng?
Resin ea thermosetting kapa resin ea thermosetting ke polymer e phekolehang kapa e bopehang hore e be sebopeho se thata ho sebelisa mekhoa ea ho folisa joalo ka ho futhumatsa kapa mahlaseli.Mokhoa oa ho phekola ke mokhoa o ke keng oa khutlisoa.E kopanya marang-rang a polymer ka tlamo e kopanetsoeng ea lik'hemik'hale.
Ka mor'a ho futhumatsa, thepa ea thermosetting e lula e tiile ho fihlela mocheso o fihla mocheso oo o qalang ho senyeha.Mochine ona o fapane le oa polasetiki ea thermoplastic.Mehlala e mengata ea li-resin tsa thermosetting ke:
Phenolic resin
- Amino resin
- Resin ea polyester
- Resin ea silicone
- Epoxy resin, le
- Resin ea polyurethane
Har'a tsona, epoxy resin kapa phenolic resin ke e 'ngoe ea li-resin tse tloaelehileng tsa thermosetting.Matsatsing ana, li sebelisoa haholo lits'ebetsong tsa meralo le tse khethehileng tse kopaneng.Ka lebaka la matla a bona a phahameng le ho satalla (ka lebaka la li-cross-link tse phahameng), li batla li loketse kopo leha e le efe.
Ke mefuta efe ea mantlha ea li-epoxy resin tse sebelisoang linthong tse kopaneng?
Mefuta e meraro ea mantlha ea li-resin tsa epoxy tse sebelisoang lits'ebetsong tsa lisebelisoa tse kopaneng ke:
- Phenolic aldehyde glycidyl ether
- Monko o monate oa glycidyl amine
- Cyclic aliphatic metsoako
Lintho tsa bohlokoa tsa epoxy resin ke life?
Re thathamisitse ka tlase thepa ea bohlokoa e fanoeng ke epoxy resin.
- Matla a phahameng
- Sekhahla se tlase sa shrinkage
- E na le khokahano e ntle ho li-substrates tse fapaneng
- Motlakase o sebetsang hantle
- Ho hanyetsa lik'hemik'hale le ho hanyetsa solvent, hammoho le
- Theko e tlase le chefo e tlase
Li-resin tsa epoxy li bonolo ho phekola 'me li tsamaisana le li-substrates tse ngata.Li bonolo ho kolobisa bokaholimo 'me li loketse ka ho khetheha bakeng sa lisebelisoa tse entsoeng ka motsoako.Epoxy resin e boetse e sebelisetsoa ho fetola li-polymers tse 'maloa, tse kang polyurethane kapa polyester e sa tsitsang.Li ntlafatsa litšobotsi tsa tsona tsa 'mele le lik'hemik'hale.Bakeng sa thermosetting epoxy resin:
- Matla a matla a ho tloha ho 90 ho isa ho 120MPa
- Mefuta e fapaneng ea modulus ea tensile ke 3100 ho isa ho 3800MPa
- Thempereichara ea phetoho ea khalase (Tg) ke 150 ho isa ho 220 ° C
Epoxy resin e na le litšitiso tse peli tse kholo, e leng brittleness ea eona le kutloisiso ea metsi.
Nako ea poso: Jan-29-2024
