Suzhou Polywell Engineering Plastics Co.,Ltd
We provide overall solutions of PA thermal break strips. Including the PA66GF25 granules, the extruder, the mold, the thermal break strips and the broken bridge aluminum frames.
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What is a thermal break strip?
Thermal break is a reinforced polyamide strip (a non metallic, composite, structural, material) fixed between the inside and outside profiles, creating an insulated barrier within the window frame.
What is thermal break material?
A thermal break is a material with low thermal conductivity, placed in an assembly, to reduce or prevent the flow of thermal energy between the inside and outside of a building.
What are the different types of polyamides?
Polyamide (PA) Polyamides are among the most important and proven technical thermoplastics, known for their heat resistance, stiffness and high mechanical stability Polyamides can be classified into different types, with PA 6, PA 6.6 and PA 12 most established on the market.
Our polyamide strips are made of PA6.6 reinforced by 25% fiberglass.
| 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.
Why do you need a thermal break?
Why are thermal breaks important? Thermal breaks are essential for any external modern glazing system. Thermal bridging can be responsible for up to 30% of a property's heat loss. This lowers the homes energy efficiency, leading to higher heating bills.
Application and Advantages
Aluminium window has the disadvantage of limited thermal insulation. Its Uf value, which indicates the amount of heat that passes through a window profile, is simply too high. If your windows have standard aluminium profiles, your home may develop condensation, or even mould. Besides the resulting high repair costs, household mould also aggravates respiratory problems such as asthma.
But that disadvantage has now been completely eliminated if you install polyamide strips in aluminum windows. In fact, thanks to the development of a new invention known as thermal break profiles, aluminium is at least as good as its competitors. In these profiles, produced with specialized machines, a polyamide strip is placed between the inner and outer sections of the profile.
Polyamide is a plastic that insulates more than 500 times better than aluminium, so thermal break profiles have a much lower Uf value - and transmit much less heat or cold. As a result, your home stays warmer in winter, while keeping the heat outside more easily in summer.
How to storage polyamide thermal break strips?
First, Store profiles horizontally in order to prevent bending or twisting the material, otherwise long storage periods cause permanent sagging. Support long lengths.
Second, Maintain ambient temperature in the range from 15 to 20 °C.
Third, Protecting against moisture.
Q: About Sample
A: Sample is Free, but the express fee is collect or you pay us the cost in advance.
Q: About MOQ
A: For the polyamide granules, MOQ is 1 ton. For the thermal break strips, MOQ is 5,000 meters.
Q: About Customizing Special shape of polyamide Profiles and its period
A: You can customize the special shape of polyamide strips. If we didn't meet this shape before, we will make new mold for you, and you should pay for the mold.
Q: About Customizing Package Style and Marks
A: You can customize the package style and marks.
Q: Why your price is higher/lower than others?
A: For years specializing in polyamide granules and thermal break strips has bestowed us experienced and skilled technical workers and production workers. We promise the stability of products and the high-quality of raw material. Furthermore, we can provide technical support from raw material to the final appliance. Believe in that you can get better products and service with lower price.
Q: About warranty
A: We are confident in our products, and pack them well before delivery, so usually you will receive your order in good condition. Any quality issue, we will deal with it immediately.
Q: About Payment or other question
A: 50% T/T deposit before production, 50% T/T balance before loading.
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