Uphawu lwesihlalo sangasese se-UF

Urea formaldehyde(UF） isitulo sendlu yangaseseisetyenziselwa ikakhulu ukulungiselela i-amino alkyd yokubhaka ipeyinti kunye ne-alkyd resin ukuphucula ubulukhuni kunye nokoma kwefilimu yepeyinti. Isitulo sendlu yangasese ye-UF sinokudityaniswa ne-alkyd resin engomisiyo ukwenza ipeyinti ye-amino ephilisa iasidi, enokusetyenziselwa ukugquma ukukhanya kwefenitshala yomthi. Kodwa ukumelana nemozulu, ukunganyangeki kwamanzi kunye nokugcinwa kokukhanya kumbi kancinci. I-epoxy resin kunye ne-alkyd resin ingasetyenziselwa ukulungiselela ii-primers kunye neepeyinti zangaphakathi kunye neempawu ezahlukeneyo. Iimpawu eziphambili ziquka:

1. Ixabiso leisihlalo sangasese se-UFIxabiso eliphantsi kwaye izixhobo eziluhlaza zanele.

2. Ubume bemolekyuli yeurea formaldehyde(UF)isihlalo sendlu yangaseseiqulethe iiathom ze-oxygen kwi-polar, ngoko ke inonamathela kakuhle kumphezulu. Ingasetyenziselwa i-primer kunye ne-intermediate coating ukuphucula ukunamathela phakathi kweengubo eziphezulu.

3. NgokubaIsitulo sangasese se-UFinokunyangwa kwiqondo lobushushu begumbi xa usebenzisa i-asidi catalyst, ingasetyenziselwa izinto ezimbini zokugquma iinkuni.

4. Ifilimu yepeyinti ephiliswe nge-urea formaldehyde resin inokuguquguquka okuhle.

5. I-resin ye-Urea formaldehyde ine-viscosity ephezulu, ixabiso le-asidi ephezulu kunye nokuzinza okungahambi kakuhle.