Yintoni i-resin thermosetting?
I-resin ye-thermosetting okanye i-thermosetting resin yi-polymer enyangwayo okanye ebunjwe ibe yimo enzima isebenzisa iindlela zokunyanga ezifana nokufudumeza okanye ukutshisa i-radiation.Inkqubo yokunyanga yinkqubo engenakuguqulwa.Idibanisa inethiwekhi yepolymer ngokusebenzisa ibhondi yekhemikhali edibeneyo.
Emva kokufudumeza, i-thermosetting material ihlala iqinile de iqondo lokushisa lifike kwiqondo lokushisa apho liqala ukuhla.Lo matshini uchasene neplastiki ye-thermoplastic.Imizekelo emininzi ye-thermosetting resins yile:
Phenolic resin
- Amino resin
- I-polyester resin
- I-Silicone resin
- Epoxy resin, kunye
- Polyurethane resin
Phakathi kwazo, i-epoxy resin okanye i-phenolic resin yenye yezona ziqhelekileyo ze-thermosetting resins.Namhlanje, zisetyenziswa ngokubanzi kwizakhiwo kunye nezixhobo ezizodwa ezidibeneyo.Ngenxa yamandla abo aphezulu kunye nokuqina (ngenxa ye-cross-linking ephezulu), ziphantse zilungele nasiphi na isicelo.
Zeziphi iintlobo eziphambili ze-epoxy resins ezisetyenziswa kwizinto ezidibeneyo?
Iindidi ezintathu eziphambili ze-epoxy resins ezisetyenziswa kwi-composite material applications zezi:
- Phenolic aldehyde glycidyl ether
- I-glycidyl amine enevumba elimnandi
- Iikhompawundi ze-cyclic aliphatic
Ziziphi iimpawu eziphambili ze-epoxy resin?
Sidwelise ngezantsi iimpawu eziphambili ezibonelelwa yi-epoxy resin.
- Amandla aphezulu
- Izinga lokucutheka eliphantsi
- Incamathele kakuhle kwii-substrates ezahlukeneyo
- Ukufakelwa kombane okusebenzayo
- Ukumelana nemichiza kunye nokumelana ne-solvent, ngokunjalo
- Iindleko eziphantsi kunye netyhefu ephantsi
Iiresin ze-epoxy kulula ukunyanga kwaye ziyahambelana noninzi lwe-substrates.Zilula ukumanzisa umphezulu kwaye zifanelekile ngokukodwa kwizicelo zezinto ezidibeneyo.I-epoxy resin ikwasetyenziselwa ukuguqula iipolymer ezininzi, ezifana ne-polyurethane okanye i-polyester engaxutywanga.Baphucula iimpawu zabo zomzimba kunye neekhemikhali.Kwi-thermosetting epoxy resins:
- Uluhlu lwamandla obunzima lusuka kwi-90 ukuya kwi-120MPa
- Uluhlu lwemodyuli yokuqina yi-3100 ukuya kwi-3800MPa
- Uluhlu lobushushu beglasi (Tg) luyi-150 ukuya kuma-220 ° C
I-Epoxy resin inezithintelo ezimbini eziphambili, ezizezi, ukunyanzeliswa kwayo kunye novakalelo lwamanzi.
Ixesha lokuposa: Jan-29-2024
