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Effect of Fiber Diameter on the Structure and Properties of Glass Fiber Paper |
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Key Words:glass fiber fiber diameter porosity thermal conductivity |
Fund Project:陕西省重点实验室项目(15JS014)。 |
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Abstract:Based on the measurement of glass fiber diameters, the effect of glass fiber diameter on the microstructure and properties of glass fiber paper was studied mainly by scanning electron microscope, mercury porosimetry and thermal conductivity tester using hot-wire method. The results showed that the pore structure of the sheet would be influenced by fiber diameter, and the smaller the fiber diameter, the smaller of the pore size in the fiber network, the lower of the interconnection degree between the pores. The porosity rate showed a significant increase trend with the decrease of fiber diameter., the thickness of the sheet increased but the air permeability decreased with the fiber diameter decreasing on the same basis weight. The thermal conductivity of glass fiber paper decreased significantly with the decrease of fiber diameter. The change of thermal conductivity of the paper along with the change of fiber diameter was obvious when the fiber diameter was less than 1μm,and the smaller the fiber diameter, the thermal conductivity decreased faster. |
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