Brief introduction of new urea-formaldehyde flame retardant foam insulation material

The new urea-formaldehyde flame-retardant foam insulation material is a water-based high-efficiency heat insulation material which can be foamed at room temperature, mainly urea-formaldehyde resin and foaming emulsion. After special formulation and precise process control, the product has excellent heat insulation performance. It is a revolutionary material that replaces polystyrene board and extruded board in the future. Its flame retardant performance is much higher than that of polystyrene board and extruded board. It is equivalent to phenolic foam, but it has an incomparable price advantage compared with phenolic foam and polyurethane foamed foam. .

In particular, the excellent cost performance allows it to have a large number of sandwich insulation systems for buildings and industrial pipes, storage tanks, cold storage and other insulation structures. The product is non-toxic and tasteless, and the formaldehyde content in the material has been tested to meet the national standard of GB18580-2001 "Release release limit for wood-based panels and their products for interior decoration and decoration materials". The conclusion is that "the finish can be used indoors after finishing" , to meet the requirements of environmental protection.

The new urea-formaldehyde flame-retardant foam insulation material is a water-based foaming environment-friendly high-efficiency heat preservation material, which is composed of a modified urea-formaldehyde resin and a foaming liquid two-component liquid, and is non-toxic and tasteless. After mixing, it is sprayed by a foaming machine and cured in 60 seconds to form a foam having thermal insulating properties. The performance indicators achieved are: wet density 60-80kg/m3, dry density 15-25kg/m3, water-repellent rate 96%, thermal conductivity 0.032 W/m?K, combustion classification conforming to C-class, all meeting international standards.

Test results table test project unit reference polystyrene board standard requirements test results description

Density kg / cubic meter ≥ 15 25 density adjustable

Dimensional stability 70 °C ± 2 ° C % ≤ 2.0 0.7 Good dimensional stability

Thermal conductivity (25 °C) w / (m * K) ≤ 0.034 0.032 good insulation effect

Burning performance grade B2 B1 good flame retardant performance

Formaldehyde emission amount Mg/L - 0.02 Meets the most stringent national standards for interior wall coatings

Product application range:

1. Widely used in exterior wall insulation block filling materials;

2. Widely used for sound insulation and heat preservation of indoor lightweight partition boards;

3. Insulation materials used in extremely cold conditions such as cold storage;

4. Insulation materials for petrochemical pipelines;

5. Applications for low temperature and high temperature resistance such as fan side tubes of central air conditioning ancillary facilities;

6. Insulation of agricultural intelligent greenhouses;

7, agricultural slow release fertilizer sustained release agent and other aspects.

Advantages of on-site foaming and application of prefabricated parts:

1. Low-maintenance maintenance cost The new urea-formaldehyde flame-retardant foam insulation material in the inner and outer wall interlayer is not affected by the environment. Its thermal insulation performance is long-lasting, foaming on site, forming thermal insulation integration. After special construction, one molding, no retention Sew, block the heat bridge and the cold bridge. Really keep the life of the insulation system and the building, and avoid the worries of the subsequent external insulation maintenance.

2. Insulation, energy saving and fire prevention integration This process successfully solved the restrictions on the external insulation materials of buildings by the Ministry of Public Security and the Ministry of Housing and Urban-Rural Development of the Provisional Regulations on Fire Protection of Civil Building Exterior Insulation Systems and Exterior Wall Decorations (Jongtongzi [2009] No. 46).

3, product features diversified by adjusting the thickness of the interlayer to meet the energy-saving needs of different regions of the country.

4, life safety and privacy can use a variety of wall materials to form a sandwich wall, so that sound insulation and insulation integration, so that the living room is more private.

5, the diversification of the exterior wall breaks the taboo of the high-rise exterior insulation finish layer can not be tiled, to meet the needs of various decorative materials.

6. Factory Prefabrication Industrialization Through the customization of factory prefabricated parts, it is the only way to realize the industrialization of energy-saving building parts.

Construction process:

1. Drill a mesh hole in the inner wall of the wall of the built-in sandwich wall at a distance of 1 m from the wall to form a mesh hole with a diameter of 18 mm to 20 mm.

2. Pass the foaming machine gun through the hole to the interlayer of the sandwich wall, open the spray gun and simultaneously inject the prepared two-component solution into the interlayer, and the formed foam can freely fill the reserved space and solidify in one minute.

3. Clean the foam overflowing from the hole and seal it with mortar.

Key points of urea-formaldehyde resin foam construction:

1. The outstanding advantage of urea-formaldehyde foam is that it has good flame retardancy and can be further modified on the basis of the original flame retardant properties. When applied to oil storage tanks, pipelines, and cold storage equipment, it can be cut into similar shapes, and then protected and wrapped after being tiled to prevent the foam insulation layer from entering or colliding.

2. When used in a vibrating vehicle, in order to prevent foam smashing due to vibration, try to hold the foam tightly in the sash. When applied to complex and special-shaped insulation, multiple pieces can be used to install the method. Special parts can also be filled with broken foam, but there should be no gaps.

3. If it is applied in a large area, the foam board should be wrapped with plastic film to prevent water absorption. The board can be glued with a suitable adhesive.

4. When used as a thermal insulation material in a static building, in addition to the moisture-proof measures, the foam shall not have any pressure and protective measures shall be taken.

Level of research results:

The expert committee of the appraisal listened to the report of the research unit, consulted the relevant materials, and inspected the production site of the foam-filled concrete empty (source: China Insulation Net) heart block, and further improved the corresponding application technology and related construction methods. Seriously discuss. The project uses a foamed urea-formaldehyde resin insulation material to make a composite thermal insulation block. The foamed urea-formaldehyde resin insulation material is injected into the cavity of the masonry concrete hollow block after the masonry is built, and the post-type composite thermal insulation block masonry is made into the thermal insulation material to improve the thermal performance, and the conventional performance is better overcome. The disadvantage of composite self-insulating blocks. The expert committee of the appraisal unanimously agreed that the project has formed a new technology for the self-insulating wall of the post-expansion block by adopting the integrated research on the hole shape, material properties, foam insulation material, special masonry mortar and construction technology of concrete hollow block. The self-insulating wall has the characteristics of energy saving, environmental protection, waste, fire prevention, convenient construction, the same life span as the building, and good economic benefits, and is suitable for hot summer and cold winter regions. The project technology provides a new direction for the technical improvement of concrete hollow blocks, and innovates the wall self-insulation system, which provides a good example for building energy conservation in similar areas, and its research results have reached the domestic leading level.

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