Glass-fiber PTFE single-sided sodium-treated sheet

Glass-fiber‑reinforced PTFE single‑sided sodiated sheet is a high‑performance specialty laminate based on glass‑fiber‑reinforced polytetrafluoroethylene, modified through a single‑sided sodium–naphthalene activation and etching process. The product exhibits differentiated performance on its two sides: the base material retains PTFE’s outstanding corrosion resistance, temperature stability, and self‑lubricating properties, while the glass‑fiber reinforcement enhances mechanical stability. The single‑sided sodiation treatment addresses the common challenge of poor adhesion in conventional PTFE, making it suitable for applications such as bonded composites, anti‑corrosion sealing, and wear‑resistant linings.

Physicochemical properties

1.  Corrosion resistance: It can withstand most strong acids, strong bases, organic solvents, and salt solutions, exhibiting excellent chemical stability and resistance to aging.

2.  High and low temperature resistance: Long-term operating temperature range - 200 °C ~+260 ℃; it exhibits minimal deformation and low performance degradation under high- and low-temperature cycling conditions.

3.  Excellent insulation: stable dielectric properties and high insulation resistance, enabling long-term use in electrical insulation applications.

4.  Good mechanical properties: Glass-fiber reinforcement enhances creep resistance, compressive strength, and wear resistance, thereby mitigating the cold-flow deformation issues associated with pure PTFE.

5.  Dual‑sided differentiated properties: the sodium‑treated side provides strong adhesion, while the untreated side retains the inherent non‑stick and corrosion‑resistant characteristics of PTFE.

6.  Self-lubricating: low coefficient of friction, wear-resistant and resistant to material loss, suitable for sliding and reciprocating motion conditions.

Application areas

1.  In the chemical industry: It is used as a lining for reaction vessels, storage tanks, and electroplating tanks, providing corrosion protection and isolation while extending the service life of equipment.

2.  In the field of mechanical engineering: used for heavy-duty sliders, wear-resistant liners, and equipment shims, it serves to reduce friction and noise, provide cushioning and compression resistance, and prevent deformation.

3.  In the power and electrical engineering field: used as insulating gaskets and electrical seals, providing insulation, thermal insulation, leakage protection, and circuit stability.

4.  Environmental protection equipment sector: Used as an anti-corrosion lining for fans and dust-collection equipment, providing resistance to chemical media, water, and scale.

5.  Composite assembly applications: Used for metal backplates and fiberglass‑reinforced composite panels, providing strong adhesion, structural reinforcement, and corrosion protection.

Product Advantages

1.  Dual‑sided performance customization: a single‑sided activation design that simultaneously meets the requirements for corrosion‑resistant media contact and robust adhesion, making it suitable for composite installation conditions.

2.  Well-balanced overall performance: Compared with pure PTFE sheets, it exhibits significantly improved compressive strength, creep resistance, and wear resistance, and is less prone to deformation under pressure; compared with conventional non-sodiated fiberglass‑reinforced PTFE sheets, it resolves adhesion challenges and offers enhanced installation compatibility.

3.  Stable activation layer quality: Utilizing a precision sodium naphthalene etching process, the activation layer is uniform, exhibits high bonding strength, and is resistant to delamination and adhesive failure.

4.  Weather and aging resistance: It maintains stable performance over long-term use in high- and low-temperature as well as corrosive environments, with a service life superior to that of conventional rubber and plastic gaskets.

5.  Excellent machinability: Supports cutting, drilling, turning, and bending; can be custom‑made to specified dimensions and is compatible with a wide range of non‑standard equipment.

Selection Guide

1.  Standard universal type: thickness 1.0/2.0/3.0/5.0mm , suitable for general chemical corrosion protection, mechanical sealing, and standard sliding‑bearing applications, offering excellent cost‑effectiveness;

2.  Heavy-duty load type: Thickness 6.0/8.0/10mm , suitable for heavy-load pressure-bearing applications, equipment liners, and high‑strength, wear‑resistant operating conditions, with enhanced resistance to deformation;

3.  Precision thin-profile type: thickness 0.5/0.8mm , used for sealing precision equipment, ultra-thin composite bonding, and insulation in small electrical appliances;

4.  Board dimensions: Standard specifications 1000*2000mm 、 1200*2000mm , supports custom cutting to any size;

5.  Operating condition matching: The surface in contact with the corrosive medium shall be an un‑sodified surface, while the bonding and fixing surface shall be a sodified, activated surface; during installation, these two surfaces must be clearly distinguished.

Precautions for Use

1.  Grinding, sandblasting, and polishing of the sodium‑treated surface are prohibited to prevent damage to the activation layer, which could lead to bond failure, ensure bonding stability, and reduce rework costs.

2.  The product should be stored away from light, in a sealed container, and in a dry environment. Exposure to moisture or strong light can reduce its activation performance; proper storage helps extend shelf life and minimize material waste.

3.  During assembly, keep the sodium‑treated surface clean and dry, and use it in conjunction with a dedicated epoxy adhesive to maximize bond strength and improve assembly efficiency.

4.  Only the non-sodified surface serves as both the contact interface and the friction‑working surface; the sodified surface is used solely for bonding, thereby mitigating plate wear and extending the equipment’s service life.

5.  Not suitable for ultra‑high‑purity pharmaceutical, high‑purity semiconductor, or molten alkali metal service conditions; prevents packing material precipitation that could contaminate equipment and reduces the risk of equipment failure.

Summary

Glass-fiber reinforced PTFE single-sided sodium‑treated sheet is a high‑performance composite industrial panel that combines glass‑fiber reinforcement, PTFE’s exceptional corrosion and temperature resistance, and a single‑sided activation‑bonding process. It addresses the inherent drawbacks of pure PTFE sheets—such as easy deformation and poor adhesion—while overcoming the limited bonding performance of conventional modified PTFE. The material offers outstanding properties, including superior corrosion resistance, excellent resistance to both high and low temperatures, electrical insulation, wear resistance, dimensional stability, and compatibility with composite bonding. With a full range of specifications, it is well suited to diverse industries—including chemical processing, machinery, power generation, and environmental protection—helping to reduce equipment maintenance costs and enhance operational reliability. It is the preferred material for industrial applications involving anti‑corrosion sealing and wear‑resistant composites.