Summary
Kunststoffe Zusammenfassung
- Course
- Institution
Während der Lernphase vor dem Abi geschrieben und hat sehr geholfen.
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miguelhorstmann12
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Arten von KunststoffenThermoplaste
lineare Kunstoffketten
Keine Koralenzbindungen dazwischen
Elektronen
paarbindung
Wechselwirkung nur von der Waals und WBB
bei Erwärmung schmilzt derKunstoff
Duroplast
lochte Querverbindungen
netzartigen Aufbau
bei Temperaturerhöhung schmilzt dieser
Stoff nicht
er verkohlt zersetztsich
Elastomere
weicher elastischer Kunstoff
weitmaschig aber verknüpfte
Polymerketten
verformbar geht aber in
Ausgangsform zurück
neue van der WaalsKräfte
f Es werden ausgebildet
für den Stoff energetisch
Tehnung günstig so geordnet zu sein
teilkristallin
Wärmeabgabe
, Herstellungsarten von Kunststoffen
Polymerisation
Monomer ungesättigt
z.B n
fk s
f c
Zusammenlagerung von ungesättigten Monomeren unter Verlust der Mehrfachbindung.
Radikalische Polymerisation
Bsp.: homolytische
Bindungsspaltung
R
ICE RE RE
f ungepaartes
Elektron
Radikal
Benzolring
E
Styrol
fRE RE
I
Ref Fifi ä R R
off 4
Hinweisworte für radikalische Reaktion:
• Starter Radikal
• homolytische Bindungsspaltung
• Initiator
• Peroxide
• UV-Licht/Wärme
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