PA66GF25 Fiber Glass Insulation Strips are high-performance composite thermal insulation components, engineered with premium polyamide 66 (PA66) matrix reinforced by 25% glass fiber. As the core part of thermally broken aluminum fenestration systems, our PA66 GF25 Thermal Insulation Profiles strictly comply with the national standard GB/T 23615.1-2009 and even exceed the standard in key technical parameters. Manufactured by Shuangming Plastic, these Thermal Break Strips are available in standard sizes (35.3mm-45mm) and customized extruded options, serving as the essential heat insulation solution for aluminum windows, doors and curtain walls. Every batch of our PA66GF25 Fiber Glass Insulation Strips undergoes rigorous performance testing, ensuring consistent quality and reliable thermal insulation performance for all building projects.
Model NO. | SM-X375 | Customized | Customized |
Material | Polyamide66 Reinforced by 25%Glass Fiber | Color | Single Color（Black） |
Application | for Thermal Break Aluminum Profile | Raw Material | PA66 GF25 Granules |
Markets Served | Windows & Doors | Technical Performance | GB/T 23615.1-2009 |
Customized Laser Printing | Transport Package | Roll or Linear | |
Material Properties | High Temp Resistance （≥220 °C） | HS Code | 3926909090 |
Every batch of our PA66 GF25 thermal break strips undergoes rigorous performance testing to ensure premium quality.
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Crafted from PA66 GF25 Granules, the strips feature a glass-fiber reinforced structure that delivers exceptional mechanical strength and structural stability. The single black color design meets the aesthetic and practical needs of most building projects, with customizable laser printing available for brand and specification marking.
Our PA66GF25 Fiber Glass Insulation Strips boast high temperature resistance (≥220 °C), a melting point of ≥255 °C (0.45MPa) and a Vicat softening temperature of ≥240 °C. With ultra-low thermal conductivity, the strips effectively block direct heat transfer between indoor and outdoor environments, while their matched linear expansion coefficient with aluminum profiles avoids structural deformation.
The strips are endowed with chemical-resistant, impact-absorbing and moisture-resistant properties, ensuring long-lasting performance in humid, industrial and harsh chemical environments, and effectively preventing condensation in indoor spaces.
With a thermal conductivity of approximately 1/1250th of aluminum alloy, our Thermal Break Strips significantly reduce indoor heat loss and outdoor heat gain, cutting HVAC energy consumption by 25-40% and helping buildings meet global energy efficiency standards by lowering the window’s U-value (K-value).
Lighter than metal insulation alternatives, the PA66GF25 Fiber Glass Insulation Strips reduce the overall weight of aluminum windows and doors, lower installation load and simplify transportation and on-site construction processes.
Made of eco-friendly raw materials, the nylon 66 GF25 insulation strips are 100% recyclable, complying with environmental protection requirements. With an extra-long service life, they minimize the later maintenance costs of residential and commercial buildings.
Our factory uses eco - friendly materials to make PA66 Thermal Break Strip Used in Aluminum Insulation Profile.
NO. | Item | Unit | GB/T 23615.1-2009 | SM-Technical specification |
1 | Density | g/cm³ | 1.3±0.05 | 1.28-1.35 |
2 | Linear expansion coefficient | K⁻⊃1; | (2.3-3.5)×10⁻⁵ | (2.3-3.5)×10⁻⁵ |
3 | Vicat softening temperature | °C | ≥230 | ≥240 |
4 | Melting point(0.45MPa) | °C | ≥240 | ≥255 |
5 | Testing for tensile cracks | - | No cracks | No cracks |
6 | Shore hardness | - | 80±5 | 80-85 |
7 | Impact strength(Unnotched) | KJ/m² | ≥35 | ≥40 |
8 | Tensile strength(longitudinal) | MPa | ≥80 | ≥84 |
9 | Elasticity modulus | MPa | ≥4500 | ≥4600 |
10 | Elongation at break | % | ≥2.5 | ≥4 |
11 | Tensile strength(transverse) | MPa | ≥70 | ≥80 |
12 | High temperature tensile strength(transverse) | MPa | ≥45 | ≥50 |
13 | Low temperature tensile strength(transverse) | MPa | ≥80 | ≥85 |
14 | Water resistance tensile strength(transverse) | MPa | ≥35 | ≥45 |
15 | Aging resistance tensile strength(transverse) | MPa | ≥50 | ≥60 |
Top - notch Glassfiber Reinforced Thermal Barrier Strip from our factory ensure great window insulation.
