Lebitso la Sehlahiswa:phenolic resin

Sebopeho sa molek'hule:

Nomoro ea CAS:9003-35-4

Sehlahisoa sebopeho sa molek'hule:

Lintho tsa Lik'hemik'hale:

Phenol-formaldehyde resin e lokiselitsoe ka tsela e latelang:
C6H5OH+H2C=O —> [-C6H2(OH)CH2-]n
Li-resin tsa Mokhahlelo o le Mong.Karo-karolelano ea formaldehyde ho phenol e phahame ka ho lekaneng ho lumella mokhoa oa thermosetting hore o etsahale ntle le ho eketsoa ha mehloli e meng ea li-cross-link.
Li-Resins tsa Mehato e 'meli.Karo-karolelano ea formaldehyde ho phenol e tlase ho lekana ho thibela karabelo ea thermosetting ho etsahala nakong ea ho etsoa ha resin.Mothating ona resin e bitsoa novolac resin.Ka mor'a moo, hexamethylenetetramine e kenngoa ka har'a thepa ho sebetsa e le mohloli oa lik'hemik'hale tsa li-cross-link nakong ea ts'ebetso ea ho bopa (le ho fetolela ho thermoset kapa boemo bo phekotsoeng).

Mefuta eaphenolic resins:

1, Phenolic Resins bakeng sa Lisebelisoa tsa Friction
2. Li-resin tsa rabara tsa Tire
3. Li-resin tsa phenolic bakeng sa li-abrasive tse entsoeng ka samente
4. Li-resin tsa phenolic tsa bamboo le lisebelisoa tsa lehong
5, Phenolic Resins bakeng sa Oilfield
6. Li-resin tsa phenolic bakeng sa metsoako ea ho bopa
7, Li-resin tsa phenolic bakeng sa thepa e kentsoeng
8. Li-resin tsa indasteri ea ho roala
9, Li-resin tsa phenolic bakeng sa lisebelisoa tsa ho kenya mocheso
10. Li-resin tsa phenolic bakeng sa li-abrasives tse koahetsoeng

Kopo:

Li-phenolic resin li sebelisoa bakeng sa likarolo tse theko e tlase tse hlokang thepa e ntle ea ho sireletsa motlakase, ho hanyetsa mocheso kapa ho hanyetsa lik'hemik'hale.Kakaretso ea nako ea bophelo ba resin ena e ka ba khoeli e le 'ngoe ho 21.1°C.Sena se ka atolosoa ka ho se boloka ka sehatsetsing ho 1.6 ho isa ho 10°C.Ho feto-fetoha ha motsoako (ho ea ka botenya ba samente) le ho phahamisa mocheso oa pholiso ho 93 ° C ho tla fetola nako ea pheko ho tloha ho lihora tse 8 ho isa ho tse khutšoane joalo ka 15 min.
Ho honyela ho hong ho etsahala ha ho phethoa (0.012 ho isa ho 0.6 mm/mm), ho ipapisitse le bongata ba setlatsi, palo ea lintho tse thusang, le sekhahla sa pheko.Mehato e potlakileng ea kalafo e hlahisa sekhahla se phahameng sa shrinkage.Kaha potoloho ea pheko e ka potlakisa, li-phenolic li sebelisoa ts'ebetsong ea nako e khuts'oane.
Likarolo tsa "cast phenolic" li tlosoa habonolo hlobong haeba ho sebelisoa lisebelisoa tsa karohano tse khothaletsoang ke morekisi.Posteuring e ntlafatsa thepa ea motheo ea ho lahla ho felile.