What aspects to be identified before a new building insulation product is applied

Special provisions for composite materials, surface coating materials, etc.: 1. For composite building materials produced by stereotype, regardless of their thickness and regardless of the process of production, the combustion characteristics of the stereotyped products shall be tested and comprehensively evaluated. 2 For the coating or other finishing layer (such as wallpaper) attached to the surface of the interior decoration substrate by spraying, pasting or other methods on the spot, the thickness or mass per unit area is 300g m 3, and the influence of the finishing layer on the combustion characteristics and grading of the substrate can be ignored.

If the thickness of the finishing layer exceeds or the veneer has a significant impact on the combustion characteristics of the substrate, the veneer should be prepared together with the substrate into a sample for testing and an overall comprehensive evaluation should be made. 3. The combustion performance of the material with fire protection treatment on the surface should be tested and evaluated by the treated material. The performance of fire retardant coatings and flame retardants can be tested and evaluated in accordance with their relevant standards.

This kind of test and evaluation is not the basis and basis of this grading standard, but it can be used as a reference for the comprehensive evaluation of its combustion characteristics.

To give you a professional tips, the first building insulation belongs to the energy-saving division, the product and performance indicators must be in line with the national promotion of insulation, the new type of insulation must be carried out by the provincial quality supervision station for professional material performance inspection and qualified, before it can be filed and promoted.

Thermal insulation materials are divided into organic thermal insulation materials (polystyrene board, extruded plastic board, polyurethane and phenolic board, etc.) and inorganic thermal insulation materials (represented by rock wool), because of a serious fire in Shanghai, the state issued a document 65 in March to explicitly use only A-level thermal insulation materials, all of these organic materials can not be used, because there are almost no A-level thermal insulation materials in organic materials.

In this way, rock wool can only be used for insulation, but there are very few manufacturers of rock wool (not to mention those slag cotton, which cannot be made on the wall at all), and the output of domestic rock wool is not enough for a first-tier city. At the same time, the production of those manufacturers who make organic insulation materials has stopped, because organic materials are not allowed to be used.

What to do? If you want me to see, although the new standard document has not come out, but the possibility of changing to B1 level is very large, you think, if you use A-grade, what if the output can't keep up? If they all use A-grade, what should I do if the manufacturers of organic insulation materials have closed down and the workers are unemployed?

Therefore, organic insulation materials cannot be completely banned.

If the new standard is changed to B1 grade, then polystyrene board, extruded board, phenolic board, and polyurethane board can all reach B1 grade, but in addition to the phenolic board itself is B1 grade, other organic insulation materials must add a large number of flame retardants to make the foam reach B1 grade. After adding flame retardant, once a fire occurs, the flame retardant will volatilize, producing harmful gases, and there is also the possibility of combustion, but it is still much better than those inferior materials.

It should be said that it is a relatively safe insulation material on the market, and the thermal insulation performance is much better than that of rock wool, and the water absorption rate is not as high as that of rock wool, and it is environmentally friendly. However, it has a certain brittleness and is easy to lose powder, so if it is to be applied to exterior wall insulation, it is necessary to use first-class phenolic boards, such as the products produced by Xiamen Gaote in terms of quality advantages are more obvious. But there is a problem, the phenolic board is relatively high, I believe that with the development of the phenolic industry, a large number of manufacturers compete, can reduce the phenolic board.

At present, the commonly used (civil building) insulation materials are mainly as follows:

1. Insulation board, which is the most commonly used. Generally, there are polystyrene boards, extruded plastic boards, polyurethane boards, etc.;

2. Thermal insulation mortar, which is the cheapest, but the state has expressly restricted its use (note, not prohibited), and some small places are still using it;

3. Other new processes, such as: self-insulating masonry, spraying (coating) foam insulation layer and other testing items (see GB50411-2007 building energy saving code) I will take the most commonly used insulation board as an example, and the items that generally need to be sampled and retested are as follows:

1. a thermal insulation board.

2. Special adhesive mortar.

3. Special anti-crack (overlay) mortar.

4. Strengthen the mesh cloth.

5. an anchor bolt. 6. System pull-out test.

On March 15, 2011, China's public consumption regulations also required fire inspection.

At present, the most commonly used in civil buildings is polystyrene board, extruded plastic board, generally requires the bulk density of each cubic meter of benzene board to be more than 18kg, you go to buy materials when you also want to buy this kind of 18kg or more, first determine whether the design specifically points out the bulk density, if the design is higher, the design should be taken.

Second retest: The raw materials for the second retest of thermal insulation in on-site construction are gray glue, mesh cloth, and anchor bolts, and the benzene board itself can consider the bulk density, but the benzene board with special labeling must be required to be retested. Before the net is hung and the pasted material meets the periodic strength, find the monitoring station, the person in charge of the construction unit and the supervision department to determine the firmness of the benzene board (pull-out test).

Inspection: inspection shall be carried out after the completion of the construction of the wall or roof insulation sub-project (the following single wall insulation material inspection does not include the inspection batch of insulation wall masonry).

The inspection cover is attached to the "on-site construction materials inspection form", followed by the "construction unit materials, structural parts entry inspection form" and then attached to the raw material certificate, the copy of the raw material certificate is stamped with the acceptance seal of the entry material, and then the second retest report of raw materials and finished parts is attached. When reporting for inspection, the original and the copy shall be handed over to the supervision unit for review and signature, and then a copy of the supervision and construction unit shall be given, and the original shall be kept on file by its own unit.

Whether you want to use it in the field of construction, whether it is a wall or a pipeline?

The insulation materials used in these two types are not the same.

You can refer to it!

1. Building wall insulation material: It is made of high-strength polymer adhesive mortar, polystyrene foam board (or XPS extruded board) alkali-resistant glass fiber mesh cloth, high-strength polymer plastering mortar and elastic waterproof finishing coating.

Production process: firstly, the polystyrene board or xps extruded plastic board is pasted and fixed on the base wall with high-strength polymer mortar to form an insulation layer, and then a thin layer of plastering mortar is scraped on the surface of the polystyrene board or xps extruded plastic board, and the alkali-resistant glass fiber mesh cloth is paved to form an anti-crack layer, and the surface adhesive paste is applied on the grid cloth surface to form a surface protective layer, and after drying, the elastic waterproof coating or granite imitation stone coating or granite imitation stone coating is sprayed to form a finishing layer.

2. Pipeline insulation materials: rock wool, high-temperature resistant glass wool, aluminum silicate, microporous calcium silicate, composite silicate, pipeline support, polyurethane composition, etc.

Production process: steel pipe - insulation layer - bracket - outer sleeve pipe, etc.

Hope it helps!

Exterior walls are foamed with EPS, XPS, or polyurethane.

Go to the encyclopedia to search for the craft.

Extruded plastic board and EPS board.

First deal with the base layer and then stick the board, hang the net, and batch the surface layer.