Chii chinonzi thermosetting resin?
Thermosetting resin kana thermosetting resin ipolymer inorapwa kana kuumbwa kuita chimiro chakaoma ichishandisa nzira dzekurapa senge kudziyisa kana mwaranzi.Kurapa inzira isingadzoreki.Iyo inoyambuka iyo polymer network kuburikidza necovalent kemikari chisungo.
Mushure mekupisa, iyo thermosetting material inoramba yakasimba kusvikira tembiricha yasvika pakupisa kwainotanga kuderera.Iyi nzira inopesana neye thermoplastic plastiki.Mienzaniso yakawanda ye thermosetting resins ndeiyi:
Phenolic resin
- Amino resin
- Polyester resin
- Silicone resin
- Epoxy resin, uye
- Polyurethane resin
Pakati pavo, epoxy resin kana phenolic resin ndeimwe yeanonyanya kuzivikanwa thermosetting resins.Mazuva ano, ari kushandiswa zvakanyanya mukugadzira uye yakakosha composite zvinhu zvekushandisa.Nekuda kwesimba ravo rakakwirira uye kuomarara (nekuda kwekukwira kwavo kuchinjika-kubatanidza), ivo vanenge vakakodzera chero application.
Ndeapi marudzi makuru epoxy resins anoshandiswa mucomposite zvinhu?
Iwo matatu makuru marudzi epoxy resins anoshandiswa mucomposite zvinhu maapplication ndeaya:
- Phenolic aldehyde glycidyl ether
- Zvinonhuhwirira glycidyl amine
- Cyclic aliphatic compounds
Ndezvipi zvakakosha zve epoxy resin?
Isu takanyora pazasi izvo zvakakosha zvivakwa zvinopihwa ne epoxy resin.
- Simba repamusoro
- Low shrinkage rate
- Iine yakanaka kunamatira kune akasiyana substrates
- Inoshanda magetsi ekudzivirira
- Chemical resistance uye solvent resistance, pamwe chete
- Mutengo wakaderera uye muchetura wakaderera
Epoxy resins iri nyore kurapa uye inoenderana neakawanda substrates.Izvo zviri nyore kunyorovesa pamusoro uye zvakanyanya kukodzera kune composite zvinhu zvinoshandiswa.Epoxy resin inoshandiswawo kugadzirisa mapolymer akati wandei, akadai se polyurethane kana unsaturated polyester.Vanowedzera zvinhu zvavo zvemuviri nemakemikari.Nezve thermosetting epoxy resins:
- Iyo tensile simba renji kubva pa90 kusvika 120MPa
- Iyo mhando ye tensile modulus ndeye 3100 kusvika 3800MPa
- Iyo tembiricha yegirazi yekuchinja (Tg) renji ndeye 150 kusvika 220 ° C
Epoxy resin ine zvipingamupinyi zviviri zvikuru, zvinoti brittleness uye kunzwa kwemvura.
Nguva yekutumira: Jan-29-2024
