Igama Lomkhiqizo:i-phenolic resin

Ifomethi ye-molecular:

Inombolo ye-CAS:9003-35-4

Isakhiwo samangqamuzana omkhiqizo:

Chemical Properties:

I-phenol-formaldehyde resin ilungiswa ngale ndlela elandelayo:
C6H5OH+H2C=O —> [-C6H2(OH)CH2-]n
Ama-Resins esiteji esisodwa.Isilinganiso se-formaldehyde ne-phenol siphezulu ngokwanele ukuvumela inqubo ye-thermosetting ukuba yenzeke ngaphandle kokwengezwa kweminye imithombo yezixhumanisi eziphambanayo.
Ama-Resins anezigaba ezimbili.Isilinganiso se-formaldehyde ne-phenol siphansi ngokwanele ukuvimbela ukusabela kwe-thermosetting ukuthi kwenzeke ngesikhathi sokwenziwa kwe-resin.Kuleli qophelo i-resin ibizwa ngokuthi i-novolac resin.Kamuva, i-hexamethylenetetramine ifakwa kokusebenza ukuze isebenze njengomthombo wamakhemikhali ahlanganayo ngesikhathi sokusebenza kokubumba (kanye nokuguqulelwa ku-thermoset noma isimo esilashiwe).

Izinhlobo zei-phenolic resins:

1. Ama-Phenolic Resins we-Friction Materials
2. Izinsalela zenjoloba zeTire
3. Ama-phenolic resins ama-abrasives asimende
4. Ama-phenolic resins oqalo nezinto zokhuni
5, Phenolic Resins for Oilfield
6. Phenolic resins for ukubumba compounds
7. Ama-phenolic resins wezinto ezifakwe ngaphakathi
8. Ama-resin embonini yokumboza
9, Phenolic resins for thermal insulation materials
10, Ama-Phenolic resins ama-abrasives aboshwe

Isicelo:

Ama-phenolic resins asetshenziselwa izingxenye ezishibhile ezidinga izakhiwo ezinhle zokuvikela ugesi, ukumelana nokushisa, noma ukumelana namakhemikhali.Isilinganiso sempilo yeshelufu yale resin cishe inyanga engu-1 ku-21.1°C.Lokhu kunganwetshwa ngokuyigcina esiqandisini ku-1.6 kuya ku-10°C.Ukushintsha i-catalyst (ngokuhambisana nobukhulu be-cast) nokukhuphula izinga lokushisa lokwelapha libe ngu-93°C kuzoshintsha isikhathi sokwelapha sisuke kumahora angu-8 siye sibe sifushane njengemizuzu engu-15.
Okunye ukuncipha kwenzeka ekubunjweni okuqediwe (0.012 kuya ku-0.6 mm/mm), kuye ngenani lokugcwalisa, inani le-catalyst, kanye nezinga lokwelapha.Imijikelezo yokwelapha esheshayo ikhiqiza izinga eliphezulu lokuncipha.Njengoba umjikelezo wokwelapha ungasheshisa, ama-phenolic asetshenziswa ekusebenzeni okufushane.
Izingxenye ze-cast phenolic zisuswa kalula esikhunjeni uma kusetshenziswa ama-ejenti ahlukanisayo anconywe umphakeli.I-Posteuring ithuthukisa izakhiwo eziyisisekelo zokubunjwa okuqediwe.