ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The high performance of poly p-phenylene-2,6-benzobisoxazole (PBO) fibre inmechanical properties and environmental resistance provides great potential applications asreinforcement fibres for composites. However, poor adhesion between PBO fibre and matrix is foundbecause of the chemically inactive and/or relatively smooth surface of the reinforcement fibre. Here,we report the surface modification of PBO fibres by O2 and NH3 plasma treatments. The surfaceenergy and roughness are increased for both sized and extracted fibres after plasma treatments. Thesized fibre shows marginal improvement in interfacial adhesion and no change in fibre tensilestrength because of the barrier effect of the sizing layer. For the extracted fibre, the plasma treatmentscause reduction in both interfacial adhesion and the tensile strength, which is sensitive to plasmatreatment conditions as revealed by a bimodal Weibull statistical distribution analysis. The fibresurface roughness is increased and more surface flaws are induced, which could result in coarseinterface structures when the treated fibre surface has no adequate wetting and functional groups
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.233.pdf
Permalink
