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What is a polyamide thermal barrier strip?
The polyamide strip is a mouldable composite material. Its fibers are oriented in all three dimensions to ensure appropriate strength. As such, manufacturers can use these strips across all types of fenestration, including oversized and impact-resistant systems. Therefore, polyamide thermal barriers are the best for thermal break windows.
What does a thermal break do?
A thermal break is defined as a material with low thermal conductivity placed in an extrusion with the purpose of reducing the flow of thermal energy (heat). In aluminum windows, three types of thermal breaks are used. A standard pocket thermal break has been used in the window industry for decades.
These profiles are specially designed to create a "thermal break" between the inner and outer surfaces, reducing heat loss and improving energy efficiency.
Name | Brand | Material |
PA66 Thermal Break Strips | Polywell | PA66 GF25 |
Item | Unit | GB/T 23615.1-2009 | PW-Technical specification |
Density | g/cm3 | 1.3±0.05 | 1.28-1.35 |
Linear expansion coefficient | K-1 | (2.3-3.5)×10-5 | (2.3-3.5)×10-5 |
Vicat softening temperature | ºC | ≥230ºC | ≥233ºC |
Melting point | ºC | ≥240 | ≥240 |
Testing for tensile cracks | - | No cracks | No cracks |
Shore hardness | - | 80±5 | 80-85 |
Impact strength(Unnotched) | KJ/m2 | ≥35 | ≥38 |
Tensile strength(longitudinal) | MPa | ≥80a | ≥82a |
Elasticity modulus | MPa | ≥4500 | ≥4550 |
Elongation at break | % | ≥2.5 | ≥2.6 |
Tensile strength(transverse) | MPa | ≥70a | ≥70a |
High temperature tensile strength(transverse) | MPa | ≥45a | ≥47a |
Low temperature tensile strength(transverse) | MPa | ≥80a | ≥81a |
Water resistance tensile strength(transverse) | MPa | ≥35a | ≥35a |
Aging resistance tensile strength(transverse) | MPa | ≥50a | ≥50a |
1. Sample water content less than 0.2% by weight.
2. Norm laboratory condition:(23±2)ºC and (50±10)% relative
humidity.
3. The specifications marked with "a" only applies to I-shape strip
otherwise, the specifications concluded between supplier and buyer
through consultation, shall be written in contract or purchase
order.
The polyamide strip is a material of low thermal conductivity which will minimise the transfer of heat and cold through the window frame, resulting in improved energy efficiency. The polyamide strip will have a HUGE impact in reducing transfer of heat and cold over typical non-thermal profiles. These sections can be anodized or powder coated to withstand the harsh climate, including UV damage and salt corrosion.
The wider the thermal break, the greater insulation performance .
Thermally Broken windows are a major contribution to sustainable and eco-friendly homes. They help to save money, energy and support the environment.
For all shapes, they could be packaged in linear, the length will be 6 meters or customized.
For the simple shapes like shape 'I' and shape 'C', they can be packed in rolls. 400-600 meters/roll.
Shipped in 7-15 working days after receiving the deposit.
Please feel free to contact us if you have any questions.
Lydia
E-mail: lydia@szpolywell.cn
Tel: +86-15601568506 (WhatsApp)
Address: Yangshe Town, Zhangjiagang City, Jiangsu Province, China.