PA66 GF25 Structural Thermal Strut

The PA66 GF25 Structural Thermal Strut from Jinxing serves as both a thermal barrier and a mechanically engaged connection between separated aluminum sections. For buyers working with a China manufacturer, factory or supplier, Jinxing produces structural polyamide profiles around the actual aluminum extrusion, with attention to section geometry, mechanical retention and long-term profile stability.

Structural Function Within the Thermal Break

More Than Thermal Separation

A PA66 GF25 Structural Thermal Strut is not simply a plastic spacer. It forms part of the connection between the two aluminum sections and must remain stable when the profile is assembled and subjected to mechanical loads.

The PA66 GF25 material provides the rigidity required for this role while maintaining the thermal separation created between the aluminum sections.

Load Transfer Through the Profile

The aluminum and polyamide work as a composite profile after assembly. The thermal strut needs to maintain its position and mechanical engagement so that the finished section remains stable.

This makes profile geometry, reinforcement and assembly quality equally important.

PA66 GF25 Material

25% Glass-Fiber Reinforcement

The glass fiber reinforces the PA66 base and increases the rigidity of the thermal strut. Jinxing's process also considers fiber orientation to support longitudinal strength and transverse shear resistance.

Dimensional Stability

A PA66 GF25 Structural Thermal Strut must maintain its designed cross-section during insertion, rolling and subsequent service. Stable material and extrusion conditions help preserve the required profile geometry.

Product Advantages

· Structural Thermal Barrier — Combines thermal separation with mechanical support.

· PA66 GF25 Reinforcement — Provides rigidity for profile assembly.

· Stable Mechanical Engagement — Designed to remain securely integrated with aluminum sections.

· Dimensional Stability — Helps maintain the designed profile shape.

· Profile-Specific Production — Cross-sections can be matched to different aluminum extrusion designs.

Aluminum Profile Integration

The structural strut needs to work with the complete aluminum profile rather than as an independent component.

Key points include:

Applications

Aluminum Windows and Doors

For thermally broken frame and sash systems where the thermal barrier also needs to withstand mechanical assembly forces.

Curtain Wall Profiles

For mullions, transoms and other façade sections where the thermal break forms part of the structural profile connection.

Larger Aluminum Extrusions

Suitable for profile designs where the thermal break component has a more significant mechanical role due to section size or configuration.

Assembly Considerations

The structural performance of the finished profile depends on the complete assembly process:

Aluminum pocket preparation → Strut insertion → Mechanical rolling → Profile locking

The strip dimensions, aluminum groove and rolling conditions should be coordinated to achieve the required engagement.

Manufacturing Control

Jinxing produces PA66 GF25 Structural Thermal Struts through material preparation, extrusion, cooling, shaping and precision cutting.

Incoming materials can be checked for melt flow index, glass-fiber content and moisture. During extrusion, temperature, pulling speed and cooling conditions are controlled to maintain the profile section.

Production samples are checked for cross-sectional dimensions and surface defects before finished-product inspection.

Why Choose Jinxing

Structural Profile Development

Jinxing develops thermal struts around the actual aluminum extrusion, including the required mechanical engagement areas.

Controlled Glass-Fiber Reinforcement

PA66 and glass fiber are processed under controlled conditions to support consistent mechanical and dimensional performance.

Practical Assembly Support

Jinxing can provide technical support for profile slot design, strip insertion and roll-forming issues such as cracking or insufficient shear engagement.

Customized Structural Struts

For non-standard aluminum sections, Jinxing can customize:

· Cross-sectional geometry

· Width and thickness

· Locking structure

· Color

· Cut length

· Packaging

· Laser coding

Development can begin with an aluminum profile drawing or physical sample and proceed through tooling, trial extrusion and dimensional confirmation.

Quality and Performance Checks

Applicable testing can cover:

· Longitudinal tensile strength

· Transverse tensile strength

· Dimensional characteristics

· Thermal aging

· Water resistance

· Linear expansion

The required test method and performance level should be confirmed according to the project specification.

FAQ

What is a PA66 GF25 Structural Thermal Strut?

It is a glass-fiber-reinforced polyamide component used as both a thermal barrier and a structural connection within thermally broken aluminum profiles.

Why is structural strength important in a thermal strut?

What does GF25 mean?

GF25 means the PA66 material contains 25% glass-fiber reinforcement.

Where can structural thermal struts be used?

They can be used in thermally broken aluminum windows, doors, curtain walls and other architectural aluminum profile systems.

Can Jinxing customize a structural thermal strut?

Yes. Jinxing can develop customized sections according to aluminum profile drawings or physical samples.

What information is needed for profile development?

An aluminum extrusion drawing or sample, required dimensions, locking structure and assembly method are useful for confirming the suitable structural thermal strut.