Phenolic utomonindi zopangira polima zakuthupi zopangidwa ndi condensation ya phenols (monga phenol) ndi aldehydes (monga formaldehyde) pansi pa asidi kapena maziko catalysis. Ili ndi kukana kwambiri kutentha, kutsekemera komanso mphamvu zamakina ndipo imagwiritsidwa ntchito mumagetsi, magalimoto, ndege ndi zina.
Phenolic resin (Phenolic Resin) ndi utomoni wopangidwa womwe wapangidwa ndi mafakitale. Zimapangidwa ndi kusinthika kwa phenol kapena zotumphukira zake (monga cresol, xylenol) ndi formaldehyde. Malingana ndi mtundu wa chothandizira (acidic kapena alkaline) ndi chiŵerengero cha zipangizo, zikhoza kugawidwa m'magulu awiri: thermoplastic ndi thermosetting. ndi
Makhalidwe Ofunika Kwambiri:
1. Nthawi zambiri imakhala yopanda mtundu kapena yachikasu yofiirira yowoneka bwino. Zogulitsa zomwe zimapezeka pamalonda nthawi zambiri zimawonjezera utoto kuti ziwonetse mitundu yosiyanasiyana. ndi
2. Ili ndi kukana kutentha kwambiri ndipo ingagwiritsidwe ntchito kwa nthawi yayitali pa 180 ℃. Zimapanga mpweya wotsalira wotsalira (pafupifupi 50%) pa kutentha kwakukulu. ndi
3. Makhalidwe ogwira ntchito:
Kusungunula kwabwino kwambiri kwamagetsi, kuchepa kwamoto (palibe chifukwa chowonjezera zoletsa moto) komanso kukhazikika kwa mawonekedwe. ndi
Imakhala ndi mphamvu zamakina apamwamba, koma imakhala yolimba komanso yosavuta kuyamwa chinyezi. ndi
4. Gulu ndi Kapangidwe ka Thermoplastic phenolic resin : Kapangidwe ka mzere, kumafuna kuwonjezeredwa kwa mankhwala (monga hexamethylenetetramine) kuti adutse ndi kuchiritsa. ndi
5. ThermosettingPhenol-formaldehyde utomoni: Kapangidwe ka network crosslinking, kumatha kuchiritsidwa ndi kutentha, kumakhala ndi kutentha kwakukulu komanso mphamvu zamakina
Phenolic resin imagwiritsidwa ntchito makamaka popanga mapulasitiki osiyanasiyana, zokutira, zomatira ndi ulusi wopangira.
Nthawi yotumiza: Jul-17-2025