The performance of glass fiber modified PTFE (polytetrafluoroethylene) is mainly reflected in the following aspects:
2025,09,23
The performance of glass fiber modified PTFE (polytetrafluoroethylene) is mainly reflected in the following aspects:
Chemical corrosion resistance
The PTFE material reinforced with glass fiber still maintains stability against strong acids (such as aqua regia), strong alkalis (such as sodium hydroxide), and strong oxidants (such as potassium permanganate), and will not decompose due to chemical erosion within the range of -200℃ to 260℃. The addition of glass fiber restricts the movement of PTFE molecular chains, further hindering the penetration of small molecules such as hydrofluoric acid and enhancing the overall corrosion resistance.
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Improvement of mechanical performance
Glass fiber as a skeletal structure can significantly enhance the compressive strength, wear resistance and dimensional stability of materials, especially suitable for corrosive environments containing granular media. For instance, glass fiber reinforced PTFE gaskets can still maintain sealing performance under high temperature and high pressure, reducing the frequency of flange maintenance.
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Insulation performance
Pure PTFE already possesses excellent insulation properties (low dielectric constant and low dielectric loss). Although the addition of glass fiber may slightly reduce the surface resistivity and volume resistivity, it can still meet most electrical insulation requirements under reasonable processes.
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Application advantages
The modified material is suitable for fields such as chemical engineering and petrochemicals. Compared with traditional PTFE, it is more wear-resistant and has a lower cost. For instance, fiberglass-filled PTFE gaskets have a longer service life and are suitable for scenarios with pollution-free requirements such as food and medicine