Effect of Surface Treatment of Glass Fiber by Coupling Agent on Properties of Resin Matrix Composites
The glass fiber reinforced resin matrix composites have the advantages of higher specific strength and specific modulus, fatigue resistance, ablation resistance, corrosion resistance, designability and low cost and so on , which be Widely used in the aerospace field. The properties of the composites are not only related to the properties and contents of the reinforcing fibers and matrix resins, to a large extent, but also the interfacial bonding between the fibers and the matrix resin, for one of the most important factors affecting the properties of composites is their wettability and interfacial adhesion. Usually glass fibers are typically treated with coupling agents in order to improve the fiber / resin interface bonding properties so that the glass fiber and resin matrix firmly combined, thereby effectively improve the performance of composite materials. People has not been in-depth study on the different surface treatment methods of glass cloth and the infiltration of the quality of its molded product. In this paper, an introduction to this research.
A manufacturers use textile-based sizing agent to treat glass fiber, Its main component is paraffin; Manufacturers also use paraffin emulsion treatment of glass fiber, the glass fiber is treated with a coupling agent. Glass cloth specification is EW 200 phenolic resin; KH-560 coupling agent.
Methods and apparatus
The physical, mechanical and other properties of the two glass cloth forming products were tested, the microstructure of the ablation specimens of glass fiber glass and glass fiber reinforced plastic products were observed with LE ICA S440 scanning electron microscope, and the ablation test piece was analyzed by LINK spectrometer. The wettability of glass cloth is determined by GB / T17470-1998 “Glass fiber chopped strand felt”; Glass fiber reinforced plastic products density GB1463-88 “fiber reinforced plastic water absorption, density and relative density test method” determination; Tensile strength, elongation at break, compressive strength and internal quality of glass fiber reinforced plastic products are respectively adopted by enterprise standard DqES77-98 “Tensile property test method for plastics and fiber reinforced plastics”, DqES79-98 “hard plastic and fiber Enhanced plastic compression performance test method “and DqES288-94” ultrasonic testing method “test.