Chii chinonzi Acrylic Powder Coatings
Acrylic upfu hwekuputira hupfu vane zvakanakisa zvekushongedza zvimiro, kuramba mamiriro ekunze, uye kuramba kusvibiswa, uye vane kuoma kwepamusoro. Kuchinja-chinja kwakanaka. Asi mutengo wacho wakakwira uye kuramba kwecorrosion kwakashata. Naizvozvo, nyika dzeEurope generally shandisa pure polyester poda (carboxyl-ine resin, yakarapwa neTGIC); (hydroxyl-containing polyester resin inorapwa ne isocyanate) semushonga unodzivirira mamiriro ekunze.
Zvinoumba
Acrylic poda coatings inoumbwa ne acrylic resins, pigment uye mafirita, additives uye anorapa agents.
Types
Nekuda kweakasiyana anoshanda mapoka ari muchimiro chemolecular, acrylic resins ane anotevera marudzi:
1. Acrylic resin ine glycidyl ether inoshanda boka.
2. Acrylic resin ine carboxyl inoshanda boka.
3. Acrylic resin ine hydroxyl inoshanda boka.
Curing Conditions
Nekuda kwezvimiro zvakasiyana uye mapoka anoshanda ari mu acrylic resins, iyo yakasarudzwa kurapa maajenti uye nzira dzekurapa zvakare dzakasiyana. Mushure mekuyambuka-kubatanidza, izvo zvemuviri uye zvemakemikari zvimiro zvakasiyanawo.
Mamiriro ekurapa e acrylic poda coatings ndeaya:
Kurapa tembiricha: 180 ℃ ~ 200 ℃;
Kurapa nguva: 15min ~ 20min;
Nzira dzekushandisa dze thermosetting poda coatings inogona kushandiswa acrylic poda coating.
Production Process
Pane nzira ina dzekugadzira acrylic poda coating:
Imwe ndiyo nzira ye evaporation.
Chechipiri inzira yekupfapfaidza yekuomesa.
Chechitatu inzira yemvura.
Pakupedzisira, zvakafanana nenzira yekugadzira epoxy powder coating.
Nzira yechina yekugadzira inonyanya kushandiswa.
Izvi zvinotevera:
Kusanganisa → extrusion → kupwanya → sieving → kurongedza