Surface, interphase and tensile properties of unsized, sized and heat treated basalt fibres

37th Risø International Symposium on Materials Science

Förster, T.^1 ; Sommer, G.S.^1 ; Mäder, E.^1 ; Scheffler, C.^1

Leibniz-Institut für Polymerforschung Dresden E.V. (IPF), Hohe Straße 6, Dresden

01069, Germany^1

关键词: Fibre reinforced polymers;    Fibre tensile strength;    Fibre-matrix adhesion;    Mechanical performance;    Nitrogen atmospheres;    Reinforcing fibres;    Surface analysis methods;    Wetting capabilities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/139/1/012019/pdf
DOI  :  10.1088/1757-899X/139/1/012019

来源: IOP

【 摘 要 】

Recycling of fibre reinforced polymers is in the focus of several investigations. Chemical and thermal treatments of composites are the common ways to separate the reinforcing fibres from the polymer matrices. However, most sizings on glass and basalt fibre are not designed to resist high temperatures. Hence, a heat treatment might also lead to a sizing removal, a decrease of mechanical performance and deterioration in fibre-matrix adhesion. Different basalt fibres were investigated using surface analysis methods as well as single fibre tensile tests and single fibre pull-out tests in order to reveal the possible causes of these issues. Heat treatment in air reduced the fibre tensile strength in the same level like heat treatment in nitrogen atmosphere, but it influenced the wetting capability. Re-sizing by a coupling agent slightly increased the adhesion strength and reflected a decreased post-debonding friction.