PA66GF25 Low Thermal Conductivity Strips are the flagship thermal break solutions for energy-efficient construction and industrial systems, crafted from 100% virgin polyamide 66 (PA66) reinforced with 25% glass fiber. Engineered to eliminate thermal bridges in aluminum profiles, these thermal break strips balance exceptional insulation performance with uncompromising structural integrity, complying with the strict GB/T 23615.1-2009 standard and holding ROHS certification with zero recycled content. Trusted by 60% of global premium window manufacturers (Technoform data), our PA66GF25 thermal insulation strips feature a low thermal conductivity of λ ≤ 0.3 W/(m·K), cutting the whole-window U-value by 0.6 and reducing annual HVAC costs by ≥12%. With a 10-year official warranty and a 40+ year service life, they are the first choice for high-end thermal insulation projects worldwide. Core specs include a density of 1.28-1.35 g/cm³, Vicat softening temperature ≥240°C, and a precise dimensional tolerance of ±0.1mm, ensuring perfect compatibility with aluminum profiles.
Model NO. | SM-CG253 | 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 |
PA66GF25 Glass-Fiber Reinforced Nylon Strips are chosen by 60% of global premium windows (Technoform data). ROHS-certified with zero recycled content, they ensure structural load safety in curtain walls.
The core PA66GF25 material’s low thermal conductivity blocks indoor-outdoor heat transfer, fundamentally solving the thermal bridge problem of aluminum frames. This feature reduces building energy consumption by 30-40% for both residential and commercial properties, maintaining a stable and comfortable indoor climate in all seasons and lowering long-term energy expenses.
25% glass fiber reinforcement endows the strips with a flexural modulus ≥4600MPa and longitudinal tensile strength ≥84MPa. Its linear expansion coefficient [(2.3-3.5)×10⁻⁵ K⁻⊃1;] is perfectly matched to aluminum profiles, preventing gaps or structural shifts during thermal cycling and ensuring lasting structural safety for building components.
PA66GF25 Low Thermal Conductivity Strips withstand extreme temperatures from -40°C to 220°C, with excellent resistance to UV radiation, acids, and alkalis. The material’s low water absorption minimizes dimensional changes in humid environments, avoiding performance degradation and ensuring consistent thermal break effects for decades.
We offer custom extruded polyamide strips with a width range of 25mm-35mm, supporting personalized customization of dimensions, shapes, and performance parameters. Laser printing is also available, meeting the unique technical requirements of different construction and industrial projects.
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 |
PA66 + 25% Fiberglass Thermal Breaks, λ ≤ 0.3 W/(m·K), cuts whole-window U-value by 0.6, reduces HVAC cost ≥ 12 % yearly.
