Analysis: Characteristics of various types of thermal insulation separators

Insulation is a high-tech product. It is a very thin but excellent thermal insulation fiber. With double-sided adhesive window frame, the heating film will be flat and the transparency is very high. A layer of hot air is formed between the separator and the glass. No matter how low the outside temperature is, there will be no frost and fog on the glass, so that the outside scenery can be seen in the cold winter.

In addition, due to the excellent thermal insulation properties of the insulation barrier film, it can obviously save energy and keep warm after application (the energy-saving effect depends on the size of the glass window, which can save up to 40%).

Each type of thermal insulation film not only has solar reflectance, absorption rate, total solar energy barrier rate and shielding coefficient, but also has a 99% UV blocking rate, and the corresponding sun protection index is 100, while the general glass sunscreen The index is only 0.5 to 2.7, and the sunscreen index of sunscreen is only 20, which is ideal after blocking the thermal insulation film.

Depending on the variety, the rate of glare reduction fluctuates between 42% and 79%. The strength of each type of film is also relatively high. The tensile strength of No.1~5 is 177.3MPa, the breaking strength is 696.3kPa, the peeling strength is 1300g.cm-1, the puncture strength is 34927g. The tensile strength of No.6 is 203.4. MPa, the breaking strength was 1620.3 kPa, the peel strength was 1122 g.cm-1, and the puncture strength was 66224 g.

Low-radiation film can block the huge heat of the summer sun (up to 79% solar heat) and dazzling glare, but it does not affect the light entering the room, making the room more cool, while the winter can reduce the loss of heat through the glass, posted on the single When the inner surface of the glass is used, the heat loss can be reduced by about 30%, which plays a role of cooling in winter and warm in summer.

The substrate material of the thermal insulation film is a polyester film of 15 to 50 μm, which can be colored by magnetic sputtering of various non-ferrous metals, usually silver, gray, bronze, golden yellow and the like. Some of the lower grades have a dyed film.

The polyester film is usually formed by the condensation of terephthalic acid and ethylene glycol, and has high mechanical strength, chemical stability and low water absorption, tensile strength up to 137 MPa and elongation of 70%.

Thoroughly clean the glass before applying the film. Clean the glass with detergent and rubber to remove all dust and dirt. According to the requirements of the type of thermal insulation film, the pressure-sensitive adhesive applied to the surface is adhered by manufacturing a heat insulating film. These films are generally available for more than 10 years depending on a large number of experiments and weatherability tests. 3M company has produced various types of thermal insulation films for more than 30 years.

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