The industry released how to solve the common insulation system problems of container houses

1. Color steel sandwich panel insulation system

The color steel sandwich panel is a kind of insulation enclosure board formed by bonding (or foaming) the bottom of the color-coated steel plate, color-coated steel plate or galvanized steel plate and the insulation core material. According to different insulation core materials, it can be divided into rigid polyurethane sandwich panels, polystyrene (or extruded polystyrene) sandwich panels and rock wool sandwich panels. The color steel sandwich panel adopts the form of occlusal connection, which can be used in humid places, and the surface of the panel can be pre-coated with high-frequency heat-sealed PVC topcoat. The internal insulation system of color steel sandwich panels is generally used in dry box structures and container activity rooms that require low thermal insulation performance.

2. Keel insulation system

The keel internal thermal insulation system is an internal thermal insulation method adopted in conjunction with gypsum boards, fiber cement boards, calcium silicate boards, magnesium oxide boards and other interior wall decorative boards. The box structure combines the structural characteristics of steel structure houses. The thin-plate keel is not only used as a structural load-bearing part, but also as a fixed foundation for the inner wall panel. The outer panel can be in various cross-sectional forms such as dry box large corrugated ribs, flat panels, and wall profiled panels. The keel is usually filled with fibers such as rock wool and glass wool. shape insulation material.

3. Composite insulation gypsum board internal insulation system

In the early 1970s, Europe began to apply the composite thermal insulation gypsum board internal insulation system in buildings. After nearly 40 years of large-scale engineering practice and testing, it has formed a complete technical standard and has become the mainstream building envelope insulation system in Europe. Since it was introduced to my country by foreign-funded building materials companies represented by Lafarge in 2006, the system has passed a series of theoretical and testing demonstrations in the construction industry, published relevant technical regulations and atlases, and has been successfully applied to many engineering projects. The composite thermal insulation gypsum board has both the decoration of the gypsum board and the excellent thermal insulation performance of the thermal insulation material, which realizes the integrated decoration of the thermal insulation material and the interior wall decorative board of the container movable room, and improves the efficiency of the interior decoration.

4. Polyurethane inner insulation system

The polyurethane internal thermal insulation system is an internal thermal insulation system for the enclosure structure of the container prefabricated house formed by combining the foaming technology of the cold box. , side, bottom and other major assembly parts, after the final assembly, perform secondary foaming at the junction of each integral part. The polyurethane internal insulation system is suitable for various forms of box structures, and has incomparable advantages over EPS, XPS and other insulation materials:

(1) Good thermal insulation performance, thermal conductivity of rigid polyurethane foam≤0.024W (/mK), it is the insulation material with the best thermal performance among insulation materials such as EPS and XPS. Molded and injected polyurethane hard foam can adapt to various shapes and cross-sections, forming a continuous and effective insulation layer, and avoiding the cold (hot) bridge phenomenon caused by the circulation of air through gaps or cavities.

(2) Strong adhesion: rigid polyurethane foam can be firmly bonded to concrete, wood, steel, asphalt, rubber and other materials. Molded and injected polyurethane rigid foam can be effectively combined with the box body and interior wall decorative panels. Even under the most unfavorable temperature and humidity, as well as under the influence of many factors such as self-weight and normal collision, the insulation layer still maintains stability and does not appear to be in contact with the box body. Separation and shedding of interior wall decorative panels.

(3) Good fireproof performance Polyurethane hard foam is a kind of flame retardant and self-extinguishing carbonized material after adding flame retardant, and there is no XPS, EPS, and the defect that the wall falls off due to the melting drop caused by fire and high temperature. Its fireproof performance Can reach level B2.

(4) Good waterproof performance Since the polyurethane rigid foam belongs to the closed cell structure, the closed cell rate is 90%, and the water absorption rate is≤4%, can well block the penetration of water and water vapor, and can keep the thermal insulation system in a good and stable thermal insulation condition for a long time.

(5) Good crack resistance Polyurethane rigid foam is a kind of flexible material with strong resistance to external deformation. Under the action of external force, temperature, humidity and other deformations, cracks are not easy to occur, effectively ensuring the stability and durability of the system .

(6) Good environmental performance Polyurethane rigid foam has a three-dimensional thermosetting cross-linked structure and is a material with high chemical stability. The foaming agent can be fluorine-free or semi-fluorine, so it will not produce harmful gases and will not Harmful to the indoor environment and the ozone layer.

(7) Convenient construction The construction of mold injection can be mechanized with high efficiency. Polyurethane construction has a strong ability to adapt to the shape of container prefabricated houses, and can fully guarantee the thermal insulation effect of complex parts.

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