PTFE Molded/Skived Sheet/Film

Ⅰ、Features

Polytetrafluoroethylene sheet by suspension polymerization of PTFE resin molding. It has the best chemical resistance in known plastics and does not age. It has the best coefficient of friction in known solid materials and can be used at -180 ° C to +260 ° C without load.

Ⅱ、Specifications:

Ⅲ、Main Properties 

 

Ⅳ、Usage:

Seals and lubricants for use in a variety of media, as well as electrical insulation for use at various frequencies. Capacitor media, wire insulation, electrical instrumentation insulation.

PTFE Single-Side Treated Sheet Product Introduction

PTFE single-side treated sheet is an innovative polytetrafluoroethylene (PTFE) composite material. Through special surface treatment processes, one side of the sheet gains bondable characteristics while the other side retains PTFE's inherent excellent properties. This unique "double-sided anisotropic" design perfectly solves the industry-wide challenge of PTFE's difficulty in bonding, providing irreplaceable application value in high-end sealing, electronics, electrical, and other fields.

Core Advantages

· Breakthrough Bonding Capability: Treated side peel strength reaches 15-25 N/cm, more than 20 times that of traditional PTFE.

· Precise Performance Zoning:

  · Treated Side: Bondable, printable (Surface energy 50-60 mN/m)

  · Untreated Side: Maintains ultra-low friction coefficient (0.05-0.10) and insulation properties.

· Eco-friendly Process Options: Three solutions available: sodium naphthalenide treatment, plasma treatment, laser etching.

Key Performance Indicators

Performance	Parameter	Test Standard
Bond Strength	15-25 N/cm (Epoxy adhesive)	ASTM D903
Temperature Range	-200℃ ~ +260℃	ASTM D794
Surface Resistivity	Treated Side: 10³-10⁵ Ω·cm	ASTM D257
Chemical Resistance	Resists 98% Sulfuric Acid (Untreated Side)	ASTM D543

Typical Applications

· Composite Sealing Systems: Treated side bonded to metal flange, untreated side acts as sealing surface.

· Electronic Packaging: Treated side for circuit bonding, untreated side provides insulation protection.

· Medical Devices: Treated side for sensor attachment, untreated side contacts biological tissue.

· Corrosion Protection Linings: Treated side bonded to tank body, untreated side resists medium corrosion.

Selection Guide

· Recommended Scenarios:

  · ✅ Conditions requiring permanent bonding of PTFE with other materials.

  · ✅ Composite requirements for both sealing and fixation.

  · ✅ Insulation packaging for high-frequency devices.

· Scenarios for Cautious Use:

  · ❌ Long-term contact with ketone solvents.

  · ❌ Continuous high-temperature environments exceeding 260℃.

Key Performance Parameters

Performance Indicator	Treated Side	Untreated Side
Contact Angle	30-50°	110-120°
Surface Energy	50-60 mN/m	18-20 mN/m
Peel Strength	15-25 N/cm	Not Bondable
Resistivity	10³-10⁵ Ω·cm	>10¹⁶ Ω·cm

Product Specifications

Parameter	Standard Range	Standard Range
Thickness	0.5-10mm	0.5-10mm 0
Size	1000×1000mm	≤ 2000×3000mm
Treated Side Roughness	Ra 0.8-1.6μm	Ra 0.4-3.2μm
Color	Treated Side Dark Brown	Laser Marking Available

Basic Characteristics Comparison

Characteristic	Treated Side	Untreated Side	Test Standard
Surface Energy	50-60 mN/m	18-20 mN/m	ASTM D7490
Water Contact Angle	30-50°	110-120°	ISO 19403
Peel Strength (Epoxy)	15-25 N/cm	< 1 N/cm	ASTM D903
Surface Resistivity	10³-10⁵ Ω·cm	>10¹⁶ Ω·cm	ASTM D257

Physical Properties

Parameter	Value Range	Test Condition
Thickness	0.5-10mm (±0.1mm)	Micrometer Measurement
Density	2.14-2.20 g/cm³	ASTM D792
Heat Deflection Temperature	55℃ (0.45MPa)	ASTM D648
Coefficient of Linear Expansion	10×10⁻⁵/℃	-50℃ ~ +150℃

Bonding Performance Data

Adhesive Type	Shear Strength (MPa)	Curing Condition	Temperature Range
Epoxy Resin	8-12	80℃×2h or 25℃×24h	-40 ~ +150℃
Silicone Adhesive	3-5	25℃×72h	-60 ~ +200℃
Polyurethane Adhesive	5-7	60℃×4h	60℃×4h

Machining Parameters Guide

Process	Recommended Parameter	Precautions
Laser Cutting	Power 50W, Speed 5mm/s	Nitrogen protection against oxidation
Drilling	Speed 800rpm, Feed 0.1mm/rev	Pre-cool to -10℃
Thermoforming	180-200℃,Pressure 0.5MPa	Requires special mold
Surface Cleaning	Isopropanol Ultrasonic 5min	Do not use ketone solvents

Certification Standards

Certification Type	Standard Number	Applicable Field
Food Grade	FDA 21 CFR 177.1550	Food Processing Equipment
Medical Device	ISO 10993-5	In Vitro Diagnostic Equipment
In Vitro Diagnostic Equipment	UL 94 V-0	Electronics & Electrical
Environmental	RoHS 2.0	Products Exported to EU

Storage & Usage Specifications

Item	Requirement	Failure Manifestation
Storage Temperature	15-25℃	Treated side activity衰减
Relative Humidity	< 60% RH	Surface Oxidation
Stacking Height	≤ 500mm	Sheet Deformation
Shelf Life	Sodium Naphthalenide: 3 Months	Bond Strength Decreases 50%
	Plasma Treatment:7 Days	Surface Energy Decays to 35 mN/m

Application Selection Reference

Application Scenario	Recommended Treatment Method	Alternative Solution
Chemical Equipment Lining	Sodium Naphthalenide + Epoxy Bonding	Bolted Mechanical Fixation
Flexible Circuit Substrate	Plasma Treatment	PI Film Lamination
Medical Sensor Carrier	Laser Patterning	PEEK Material
Corrosion-Resistant Signage	Sodium Naphthalenide + UV Printing	Ceramic Etching