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|T/T 50% in advance; 50% balance(upon ready before shipment)
UPVC Window Profile Heat Insulation Strips,
PA66 Heat Insulation Strips
Germany Dimex PA66 Heat Insulation Strips
Heat insulation strips' introduction:
The thermal insulation strip is the core component of the threaded thermal insulation profile, which is a "bridge break" in the heat transfer path of the aluminum profile, reducing the transfer of heat in the aluminum profile; It is also a structural connection of aluminum profiles on both sides of the thermal insulation profile. Through its connection, the three parts of the thermal insulation profile become a whole and jointly bear the load. Unlike rubber strips, it is made of new composite materials by mechanical rolling, and cannot be replaced alone. Replacement can only be performed together with the entire profile.Currently, there are three types of thermal insulation strips for aluminum alloy doors and windows, one using PVC (polyvinyl chloride) as the raw material, one using PU (polyurethane) as the raw material, and the other using PA (polyurethane, commonly known as nylon) as the raw material. PVC insulation strips and PA insulation strips are both extrusion processes, while PU adhesive strips are injection molding processes. This article will mainly introduce the relevant knowledge of PA insulation strips.
Heat insulation strips features:
The heat insulation strips are composed of polyamide (PA66) and 25% glass fiber (GF). It's color is black.It is mainly used in the high-end aluminum alloy windows&doors, framed curtain wall and high-end bridge-cutoff aluminum with excellent performances such as strong thermal insulation, high hardness, uninflammability, energy conversation and environmental protection. Its application plays a decisive role in wind load resistance, water tightness and air tightness of the windows&doors, which is also the theme of Nylon heat insulation strips.
The thermal expansion coefficient of thermal expansion is similar to that of the aluminum profile (2.5-3*10-5/K), which ensures the thermal insulation strips and aluminum materials will be tightly combined for a long time not to fall off under sunlight exposure and freezing conditions.
Scientific, rigorous , precise and unique formula and special thermal stabilizer ensure the excellent qualities of DIMEX thermal insulation strips.
The high precision, low tolerance and smooth surface ensure the air tightness and water tightness of windows.
DIMEX thermal insulation strips have the outstanding properties of excellent machining performance, aging resistance, strong chemical corrosion resistance and UV resistance.
What is PA66GF25?
PA66 refers to its material is mainly polyamide 66(commonly known as nylon 66 or PA66), while GF25 refers to the heat insulation strip added with reinforcement 25% glass fiber (GF for short). The toughness and strength of heat insulation strip is much better after adding 25% glass fiber,and the tensile strength can easily reach more than 80 MPa.
The thermal insulation strips made of PA have a certain water absorption
The rate and amount of water absorption depend on the following factors:
2) Ambient temperature;
3) Storage time.
In summer, the temperature and humidity of the warehouse are relatively high, and the insulation strips will absorb more water than other seasons, so it should be stored for a short time. When stored in a dry environment, the relative humidity is low,but if the storage time is too long and the moisture content of the insulation strip exceeds 2%, which will lead to the expansion of the insulation strips and thus causing difficulty putting them into the slot, or bubbles in the spraying process. Therefore, it is recommended that they should be stored indoors at a temperature of 15-23ºC. At the same time , the storage location should prevent soaking.
When a single bundle of insulation strips are removed from the shelf, distortion may occur. Attention should be paid to the special-shaped insulation strips such as C-type, T-type and O-type to prevent cracking due to bending and trampling, especially the two ends of straight strips. Therefore, it is recommended to minimize the bending during storage. To prevent twisting and bending, please minimize the storage time of pre-processing.
PA66 heat insulation strips picture: