Скачать или смотреть Why GF PEEK Is Stronger, Hotter, and Safer Than Carbon Fiber

GF PEEK—short for Glass-Filled Polyether Ether Ketone—is one of the toughest, most dimensionally stable materials available for high-performance FDM 3D printing. In this video, we break down everything you need to know about this powerhouse thermoplastic: from print settings and mechanical properties to real-world applications across aerospace, automotive, energy, and medical fields.

GF PEEK is essentially PEEK reinforced with 20–30% glass fibers by weight. These fibers massively improve the material’s stiffness, heat resistance, and dimensional accuracy—all while keeping it electrically insulating. That’s a critical edge over CF PEEK, which is conductive due to its carbon content. If you’re designing parts that require high-temperature endurance, extreme strength, and zero conductivity, GF PEEK hits the mark.

We’ll walk through key mechanical specs:
• Tensile Strength: 105 MPa – strong enough for structural loads
• Tensile Modulus: 7,250 MPa – high stiffness under stress
• Flexural Strength: 130 MPa – great for brackets and housings
• Flexural Modulus: 7,625 MPa – resists bending and warping
• Heat Deflection Temperature: 300°C – significantly higher than regular PEEK or CF PEEK
• Glass Transition Temp: 140°C – holds rigidity at elevated temps
• Surface Resistivity: 10^13 ohms – fully electrically insulating
• Density: 1.44 g/cm³ – heavier than unfilled PEEK but still lighter than metals

Then we test it in real-world scenarios: burn tests, torsion, UTM strength tests, and microscope analysis to evaluate interlayer bonding. Spoiler alert: GF PEEK resists direct torch contact like a champ—and holds its shape where most other materials melt or deform.

So where do you actually use GF PEEK? We cover its most common and critical applications:
• Aerospace: High-temp brackets, electrical isolation in satellite environments
• Automotive: Transmission guides, underhood sensors, heat shields, throttle body insulators
• Oil & Gas: Seals and sensor housings exposed to chemical and thermal extremes
• Medical: Sterilizable tools, surgical handles, and non-conductive devices
• Electronics/Wafer Processing: Non-conductive grippers, sockets, and precision guides

We also showcase parts printed on the Vision Miner 22 IDEX, like the hotend interface, Z-clicker, and probe holder—internal components that live right next to a 450°C heat block. Regular plastics can’t survive there, and even CF PEEK isn’t suitable due to its conductivity. GF PEEK provides the thermal resistance and stiffness needed—without shorting anything out.

You’ll also get detailed tips on how to print it:
• Nozzle Temp: 450°C with hardened steel nozzles (abrasive material)
• Bed Temp: 160°C for strong base adhesion
• Chamber Temp: 90°C+ to minimize warping and internal stress
• Drying: 4+ hours at 150°C (this material loves moisture)
• Build Plate: Carbon fiber plate with Vision Miner Nano Polymer Adhesive for best results

GF PEEK is not perfect—abrasion resistance and wear aren’t its strong suits compared to unfilled or lubricated PEEK—but if your application needs precision, high heat tolerance, and full insulation, it might just be the ideal fit.

Stick around for Cole’s high-heat torture test and mechanical performance breakdown—it’s a wild ride through what makes this material not just usable, but reliable in some of the harshest conditions out there.

At Vision Miner, we specialize in Functional 3D printing, especially high-performance plastics like PEEK, ULTEM, PPSU, PPS, CFPA, and more.
We also have extensive experience with 3D scanners, and a whole array of solutions available for purchase.

If you’re interested in using functional 3D printing and materials in your business, feel free to reach out, and we can help you make the right choice for your application.

Call 833-774-6863 or email [email protected], and we’re here to help!

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Chapters:
00:00 Introduction
00:50 Technical Data
02:30 Use Cases
04:02 What printed this custom part!
05:06 Print Specifications
05:36 DRY YOUR FILAMENT!
07:03 PEEK vs. GF PEEK
07:29 PPS-CF is not it
07:48 Lighting it on fire
10:58 Torsion Time!
11:18 UTM Time!
12:27 Time to take a closer look with the microscope!
14:28 Let's talk about printing with GF PEEK
16:14 Reach out, we're here to help!