How to accurately determine the thermal insulation performance of aluminum-plastic co-extruded profiles?

In the field of construction, aluminum-plastic co-extruded profiles are widely used in the production of doors and windows due to their excellent comprehensive performance. Among them, heat preservation performance is a key indicator to measure the quality of profiles, which is directly related to the energy consumption of the building and the comfort of living. As a member of Liaoning MOHAN New Material Co., Ltd. who is deeply engaged in the research and development of aluminum-plastic co-extruded profiles, I will introduce to you the methods of judging the thermal insulation performance of aluminum-plastic co-extruded profiles from multiple dimensions.

First, from the structural design to determine the thermal insulation performance

(i) cavity structure

Aluminum-plastic co-extruded profiles are designed with multiple cavities, each cavity can form an independent air insulation layer. Air is a poor conductor of heat, can effectively prevent heat conduction. Generally speaking, the more the number of cavities, the better the thermal insulation performance of the profile. When selecting a profile, you can check the cross-section of the profile and compare the number and layout of cavities. For example, the aluminum-plastic co-extruded profile developed by our company, through optimized design, increases the number of cavities to 5 - 6, compared with the traditional 3-cavity profile, can significantly reduce heat conduction, and its thermal insulation performance has been tested to improve by about 30%.

(ii) Heat Insulation Strip

Heat-insulating strip plays a key role in aluminum-plastic co-extruded profiles in connecting internal and external aluminum alloy and preventing heat transfer. High-quality heat-insulating strips are mostly made of PA66 nylon, which have good heat-insulating property and stability. Inferior thermal strips not only have poor thermal insulation effect, but also may be deformed and aging under high or low temperature environment, affecting the overall thermal insulation performance. You can observe the color and texture of the thermal strip to determine its quality. PA66 nylon thermal strip color uniformity, fine texture, while the poor quality of the thermal strip color dull, rough texture.

Second, according to the material characteristics to assess the thermal insulation performance

(i) plastic materials

Aluminum-plastic co-extruded profile outer plastic part of the heat preservation performance has a significant impact. High-quality plastic materials, such as polyvinyl chloride (PVC), has good thermal insulation performance. At the same time, some high-end profiles will add special heat-insulating additives to the plastic to further enhance the heat-insulating effect. Consumers can consult the specific composition and characteristics of the plastic material, or check the relevant test reports to understand the thermal insulation performance of the profile.

(ii) Aluminum alloy

Although aluminum alloy is a good conductor of heat, in the aluminum-plastic co-extruded profiles, through the combination of plastic and heat-insulating strips, it can effectively reduce its heat conduction. High-quality aluminum alloys are surface treated to reduce heat radiation. In addition, the thickness and quality of aluminum alloy will also affect the overall stability of the profile, indirectly affecting the thermal insulation performance.

Third, with the help of test reports and experiments to verify the thermal insulation performance

(i) check the test report

Formal aluminum-plastic co-extruded profile products, will be accompanied by authoritative institutions issued by the test report. The report will clearly give the profile of the heat transfer coefficient and other key indicators. The lower the heat transfer coefficient, the better the thermal insulation performance of the profile. In the purchase, be sure to ask the business to provide test reports, and carefully check the relevant data.

(ii) Simple experimental verification

If conditions permit, you can conduct simple experiments to verify. For example, one side of the profile samples will be heated, and feel the temperature change on the other side with your hand. Profiles with good thermal insulation performance, the heat transfer rate is slow, and the temperature rise on the other side is not obvious.

In summary, to determine the thermal insulation performance of aluminum-plastic co-extruded profiles, need to be from the structural design, material properties and test reports and other aspects of comprehensive consideration. Liaoning MOHAN New Material Co., Ltd. always adheres to the spirit of innovation, is committed to improving the thermal insulation performance of aluminum-plastic co-extruded profiles, to create energy-saving and environmentally friendly, comfortable and livable building space for customers.