Phenolic cobyog cov khoom siv hluavtaws polymer tsim los ntawm kev sib xyaw ua ke ntawm phenols (xws li phenol) thiab aldehydes (xws li formaldehyde) nyob rau hauv acid lossis base catalysis. Nws muaj kev tiv thaiv kub zoo, rwb thaiv tsev thiab lub zog txhua yam thiab siv hauv hluav taws xob, tsheb, aerospace thiab lwm yam.
Phenolic resin (Phenolic Resin) yog cov khoom siv hluavtaws uas tau raug tsim kho. Nws yog tsim los ntawm condensation cov tshuaj tiv thaiv ntawm phenol los yog nws cov derivatives (xws li cresol, xylenol) thiab formaldehyde. Raws li hom catalyst (acidic lossis alkaline) thiab qhov sib piv ntawm cov khoom siv raw, nws tuaj yeem muab faib ua ob pawg: thermoplastic thiab thermosetting. cov
Cov yam ntxwv tseem ceeb ntawm lub cev muaj zog:
1. Nws feem ntau yog xim tsis muaj xim lossis daj xim av pob tshab. Cov khoom lag luam muaj feem ntau ntxiv cov tshuaj pleev xim kom nthuav tawm ntau yam xim. cov
2. Nws muaj qhov ua kom sov zoo thiab tuaj yeem siv tau ntev ntawm 180 ℃. Nws tsim cov pa roj carbon ntau (kwv yees li 50%) ntawm qhov kub thiab txias. cov
3. Cov yam ntxwv ua haujlwm:
Hluav taws xob rwb thaiv tsev zoo heev, nplaim taws retardancy (tsis tas yuav ntxiv cov nplaim hluav taws xob) thiab qhov ruaj khov. cov
Nws muaj lub zog txhua yam, tab sis yog nkig thiab yooj yim nqus dej. cov
4. Kev faib tawm thiab cov qauv Thermoplastic phenolic resin : Cov qauv kab tawm, yuav tsum tau ntxiv cov tshuaj tua kab mob (xws li hexamethylenetetramine) rau crosslink thiab kho. cov
5. ThermosettingPhenol-formaldehyde cob: Network crosslinking qauv, tuaj yeem kho tau los ntawm cua sov, muaj kev kub siab dua thiab lub zog siv tshuab
Phenolic resin feem ntau yog siv los tsim ntau yam yas, txheej, nplaum thiab hluavtaws fibers.
Post lub sij hawm: Lub Xya hli ntuj-17-2025