Untersuchungen zum Einfluß einer Oberflächenmodifizierung von Fasermaterialien im nichtthermischen Plasma einer Hochfrequenz‐Entladung auf die Adhäsionsfestigkeit zu Epoxidharz. Teil III: Ergebnisse der Behandlung von Kohlenstoff‐Fasern im NH₃‐Plasma

Abstract

Kohlenstoff-Fasern wurden in einem nichtthermischen NH,-Plasma a n der Oberflache mit verschiedenartigen Nhaltigen Gruppen funktionalisiert, was rnit Hilfe der Photoelektronenspektroskopie nachgewiesen wurde. Im Verlaufe der Plasmabehandlung entstand an der Faseroberflache eine Schicht niedermolekularer, hydrierter Produkte. Die Benetzung der Fasern rnit Epoxidharz wurde durch die Plasmabehandlung verbessert. Hccneaoeanus no enusnuto nosepxnocmnoeo wodu@uyuposanux sofioxnucmwx wamepuanos e xonodnofi nnaawe mcoxouacmomnoeo p a i l p d a na ux adzeiuroc ano~cu&oii c&onoLi, Yacmb I I I : Peaynamamba 06pa6omxu yzfiepodnbcx eonoxon e NH,-nnaswe H a IIOBepXHOCTb YI' JIepOAHbIX BOJIOKOH ~E J J I H BBeAeHbI pa3JIMqHbIe a30TCORepXaIIIHe I'pynIIbI B HeTepMHYeCKO& NH,-nnas~e, YTO 6~n o AOKa3aHO C I I O M O q b I O @OTO3JIeKTpOHHO& CIIeKTPOCKOnHH. B Te'4eHHe 06pa60TKH B IIJIa3Me H a IlOBepXHOCTM BOJIOKOH 06pa30sanc~ CJIO& HH3KOMOJleKY.WlpHbIX I'HApHpOBaHHbIX IIpO,I(yIcTOB. B pe3yJIbTaTe 06pa60TKM B IIJIa3Me YJIJTHJIaCb IIpOIIMTKa BOJIOKOH 3IIOKCMgHOfi CMOJIOa. Investigation of the effect of surface modification of fibres in the non-thermic plasma of a high frequency discharge on the adhesion lo epoxide resins. Part I l l . Results of carbon fibre modification in a N H , plasmaCarbon fibres were modified by different N containing groups a t the surface in a nontherrnal NH,-plasma. This was estimated by means of photoelectron spectroscopy. During the plasma exposition a layer of low molecular hydrogenated products formed a t the surface. By plasma exposition the wetting of fibres with epoxy resin was increased.

Free radical generation upon plasma treatment of cotton fibers and their initiation efficiency in surface-graft polymerization

“…Many studies have been widely devoted to the improvement of surface cleaning, etching, and modification [20][21][22], wettability, and hydrophobic or scratch protection [23][24][25][26][27][28][29].…”

Adhesion of polyurethane to surface-modified steel

“…However, further investigations are necessary to understand the chemical structure of the plasma polymer assumed. Such an effect of the hydrogen plasma has been observed by us earlier, when carbon fibres were treated in a hydrogen plasma [43].…”

Coating of carbon fibers with adhesion-promoting thin polymer layers using plasma polymerization or electrospray ionization technique-A comparison

“…It could also be shown by XPS that ammonia plasma has changed the fiber surface also chemically by producing hydrocarbon polymer layers at the surface (Figure ) …”

“…To characterize the adhesion improvement more objectively, single fiber pull‐out tests were performed . These results could not be confirmed by single fiber pull‐out tests using the ammonia or oxygen plasma pretreatment because the fiber tensile strength was decreased by etching . In case of plasma polymer coating the tensile strength was slightly increased .…”