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.

Modified PTFE Sheet Product Introduction

Modified PTFE sheets are enhanced engineering plastic sheets produced by adding various functional fillers to a polytetrafluoroethylene (PTFE) base material and compounding them through special processes. They perfectly retain the excellent chemical stability of PTFE while significantly improving key properties such as mechanical strength, wear resistance, and dimensional stability, making them upgraded alternatives to traditional PTFE sheets.

Core Modification Types & Characteristics

Key Performance Parameter Comparison

Performance Indicator	Pure PTFE Sheet	Glass Fiber Reinforced	Graphite Filled
Tensile Strength (MPa)	14-21	25-35	18-25
Wear Rate (×10⁻⁶ mm³/N·m)	5.8	1.2	0.8
Heat Deflection Temperature (°C)	55	120	95
Friction Coefficient	0.05-0.10	0.12-0.18	0.08-0.12

Product Advantages

· Mechanical Performance Multiplied: Flexural modulus up to 1200 MPa (3 times that of pure PTFE).

· Extended Service Life: Wear resistance improved by 5-8 times.

· Multi-Functional Options: Special types available (conductive/thermal conductive/anti-static).

· Easy Processing: Supports secondary processing like CNC machining and compression molding.

Typical Application Scenarios

1. Chemical Corrosion Protection:

   · Reactor Lining Plates (Glass Fiber Reinforced)

   · Pipeline Compensators (Graphite Filled)

2. Mechanical Seals:

   · High-Pressure Pump/Valve Sealing Rings (Carbon Fiber Reinforced)

   · Compressor Piston Rings (Copper Powder Filled)

3. Electronics & Electrical:

   · 5G Base Station Insulation Gaskets (Glass Fiber Reinforced)

   · Semiconductor Equipment Carrier Plates (High Purity Grade)

Specification Parameters

Item	Standard Range	Special Customization
Thickness	1-50mm	0.5-100mm
Size	1000×1000mm	2000×3000mm
Tolerance	±0.2mm	±0.05mm
Color	White/Black/Gray	Customizable

Quality Certifications

· FDA 21 CFR 177.1550 (Food Grade)

· UL 94 V-0 Flame Retardant Standard

· RoHS 2.0 Environmental Requirements

· ISO 10993-5 Biocompatibility Test

Selection Suggestions

· Strong Corrosion Environments: Recommend Glass Fiber Reinforced + Surface Polishing.

· Wear Resistance Needs: Choose 25% Graphite Filled type.

· Anti-Static Applications: Use 15% Carbon Fiber Reinforced version.

· Ultra-High Purity: Specify Electronic Grade modified material (Metal ions < 1 ppm).

Note: Sheets of different modification types exhibit anisotropy; filler orientation must be considered during design.

Basic Performance Comparison

Mechanical Properties

Parameter	Unit	Glass Fiber Reinforced	Graphite Filled	Carbon Fiber Reinforced
Compressive Strength (10% Def.)	MPa	45-55	35-45	50-60
Flexural Modulus	MPa	900-1100	700-900	1000-1300
Impact Strength	kJ/m²	8-12	10-15	6-10

Product Specifications

Parameter	Standard Specification	Customizable Range
Thickness	1-50mm	0.5-100mm
Size	1000×1000mm	≤ 2000×3000mm
Tolerance	± 0.2mm	± 0.05mm
Color	White/Black/Gray	RAL Color Chart Available

Certification Standards

Certification Type	Standard Number	Applicable Modification Types
Food Grade	FDA 21 CFR 177.1550	Glass Fiber / Graphite Filled
Medical Device	ISO 10993-5	High Purity Carbon Fiber Reinforced
Flame Retardant	UL 94 V-0	All Types

Machining Parameters

Process	Recommended Parameter	Precautions
CNC Machining	Speed 8000 rpm, Feed 0.1 mm/tooth	Use Diamond Coated Tools
Bonding Treatment	Plasma Treatment + Epoxy Adhesive	Use within 24 hours after treatment
Thermoforming	180-200℃, Pressure 0.3-0.5 MPa	Requires Special Mold

Application Selection Guide

Application Scenario	Preferred Modification Type	Alternative Solution	Key Performance Requirement
Chemical Seals	25% Glass Fiber Reinforced	15% Carbon Fiber Reinforced	Anti-Creep + Corrosion Resistance
Oil-Free Bearings	20% Graphite Filled	Copper Powder Filled	Low Friction + High PV Value
Electronic Heat Dissipation	15% Carbon Fiber Reinforced	Boron Nitride Filled	High Thermal Conductivity + Insulation
Anti-Static Equipment	15% Carbon Fiber Reinforced	20% Graphite Filled	Surface Resistance 10⁴-10⁶ Ω