PTFE Extruded/Molded Rod/Filled Rod

Ⅰ、Features

Diameter 4-9mm rod selection of dispersed polymerization of PTFE resin paste made by extrusion processing; Diameter 10-150mm rods made of PTFE resin suspension made by plunger processing; diameter of 150mm or more by the mold Made of processing. For filled PTFE rods,can be filled glassfiber,graphite,carbon with different percent,10%,15%,25% and so on. 

Ⅱ、Types and Specifications

Ⅲ、Main Properties

Note: When the diameter of rod is larger than 16mm,only test apparent density.

Ⅳ、Applications

Electrical insulation parts, seal pads, anti-sticking materials

Glass Fiber-Filled PTFE Rod Product Introduction

Glass fiber-filled PTFE rod is a high-performance engineering plastic product made from polytetrafluoroethylene (PTFE) as the base material, reinforced with glass fibers through a special process. This product perfectly combines the excellent properties of PTFE with the reinforcing effect of glass fibers. While retaining outstanding chemical stability, it significantly improves mechanical strength and wear resistance, making it an ideal choice for demanding working conditions.

Core Advantages

· High Strength & Pressure Resistance: The addition of glass fibers increases compressive strength to 2-3 times that of pure PTFE, up to 60 MPa.

· Exceptional Wear Resistance: Wear rate as low as 0.8×10⁻⁶ mm³/N·m, service life extended by 5-8 times.

· Dimensional Stability: Coefficient of linear expansion reduced by 30%, heat deflection temperature up to 150°C.

· Maintains Chemical Inertness: Retains PTFE's resistance to strong acids and alkalis (e.g., concentrated sulfuric acid, hydrofluoric acid).

Typical Applications

· Heavy-Duty Seals: High-pressure pump/valve seals, compressor piston rings.

· Wear-Resistant Components: Chemical equipment linings, bearing guides.

· Electrical Insulation: High-voltage switch insulators, terminal protective sleeves.

· Special Fields: Semiconductor equipment load-bearing parts, food processing machinery components.

Technical Highlights

· Uses silane coupling agents for fiber interface treatment, ensuring material uniformity.

· Plasma treatment can improve surface adhesion performance by 300%.

· Supports customized fiber orientation design to meet anisotropic requirements.

· Complies with FDA, NSF and other food-grade certification requirements (special processing needed).

Product Form

· Standard Diameter: 6-150mm (Custom sizes up to 300mm supported).

· Standard Length: 500-1200mm (Maximum up to 2500mm).

· Color: Natural off-white (Custom dark colors available).

· Surface Treatment: Value-added services like polishing, coating provided.

This product has passed international standard certifications such as ASTM D7191 and ISO 13000, and is widely used in chemical, power, food processing and other fields. It is particularly suitable for replacing metal components to solve corrosion and wear problems. Special formulation solutions like carbon fiber hybrid reinforcement can also be provided based on working condition requirements.

Material Composition & Characteristics

Core Performance Parameters

Performance Indicator	Test Value	Improvement vs. Pure PTFE
Compressive Strength	40-60 MPa	200-300%
Flexural Modulus	800-1200 MPa	400-500%
Heat Deflection Temperature	150°C (0.45MPa)	Increase ~70°C
Coefficient of Linear Expansion	8×10⁻⁵/°C	Reduced 30%
Wear Rate	0.8×10⁻⁶ mm³/N·m	Improved 5-8 times

Selection Guide Table

Working Condition Requirement	Recommended Glass Fiber Ratio	Supporting Solution
Ultra-High Strength (>50 MPa)	25-30%	Add carbon fiber hybrid reinforcement
Corrosion Resistance + Wear Resistance	15-20%	Composite surface graphite coating treatment
Electrical Insulation	10-15%	Use high-purity electronic grade glass fiber

Basic Physical Property Data

Performance Indicator	Unit	Standard Value	Test Standard	Remarks
Density g/cm³	2.20-2.40	ASTM D792	15%	higher than pure PTFE
Water Absorption (24h)	%	< 0.02	ASTM D570	Almost non-absorbent
Color	-	Off-white / Light Gray	Visual	Custom coloring available

Mechanical Performance Comparison

Parameter	Glass Fiber Filled PTFE	Pure PTFE	Improvement
Tensile Strength	28-35 MPa	14-21 MPa	~100%
Compressive Strength (10% deformation)	45-55 MPa	12-18 MPa	~250%
Flexural Modulus	900-1100 MPa	350-500 MPa	~300%
Impact Strength	8-12 kJ/m²	16-22 kJ/m²	Reduced ~40%

Machining Parameters Guide

Process	Recommended Parameter	Precautions
Turning Speed	50-120 m/min	Use diamond tools
Drilling Feed Rate	0.05-0.15 mm/rev	Coolant assistance required
Surface Roughness Ra	0.4-1.6 μm	Fine turning can achieve 0.8 μm
Bonding Pretreatment	Sodium naphthalenide / Plasma Treatment	Peel strength increased 5-8 times

Certification Standards Comparison

Certification Type	Corresponding Standard	Key Inspection Item
Food Grade	FDA 21 CFR 177.1550	Migration Test
Drinking Water	NSF/ANSI 61	Heavy Metal Leaching
Military	MIL-P-22242B	Vacuum Outgassing Performance
U Environmental	RoHS 2.0	Six Hazardous Substances

Typical Application Reference