Research and Application of C2A* Flame Retardant Thermal Insulation for Buildings

Temperature, heat insulation and other fields. The structure of the product is shown in the figure.

C2A building flame retardant thermal insulation mortar technical test project measurement unit enterprise standard measured value wet apparent density kg/m3420 260243 thermal conductivity (average temperature 06 compressive strength (28d) kPa260354 compression shear bond strength kPa100113 linear shrinkage rate%0.30. 2 softening coefficient (28d) - more than 0,70.8 combustion performance level - A grade A grade 1 Foreword With the rapid development of the national economy, the demand for energy has increased sharply, the relationship between supply and demand has become increasingly tense, in order to make limited resources long-term and rational use To maintain the sustainable development of the national economy, energy conservation has become China's strategic national policy. Among them, building insulation and energy conservation has become an important content that has been comprehensively promoted throughout the country.

At present, the traditional thermal insulation materials used in China have the contradiction between thermal insulation and fire prevention. Generally, the thermal insulation performance of the organic raw material thermal insulation material is good, and the fireproof performance of the inorganic raw material thermal insulation material is good. At present, building insulation materials urgently need building insulation materials or systems with balanced performance. In order to meet the market demand, our company started to study the building flame retardant insulation mortar suitable for the current market requirements from 2010. C2A building flame retardant insulation mortar is a new type of building insulation fireproof slurry material.

2 Product technology principle and performance 2.1 Product technology principle C2A building flame retardant insulation mortar is based on organic EPS particle graphite flame retardant technology, organic-inorganic material composite technology and inorganic material foaming technology, using different chemical properties and different R inch and different flame retardant particle combination, combined with inorganic foaming cementitious materials. The product achieves a balance between technical performance and fire performance of lightweight insulation, and its combustion performance reaches the Class A flame retardant standard. Mainly used in the case of fire protection requirements of the building warranty 2.2 product technical indicators 3 product production process 3.1 selection of raw material types The product material is composed of aggregate and powder composite.

3.1.1 Selection of aggregates The aggregates of this product mainly include hollow microbeads, graphite polyphenylene granules, and specially customized EPS granules.

Specially-made ordinary polystyrene foamed granules: particle diameter 4~5mm; bulk density 15~18 kg/m3; flame retardant performance B2 grade; thermal conductivity is 0.045W/(mK). For example, small-sized nanographite polystyrene foamed particles have a flame retardancy of B1; and a thermal conductivity of 0.034 W/(mK). This material is the latest product in the market. Because inorganic materials with special heat insulation and anti-infrared light are combined with EPS during the polymerization process, the material has lower thermal conductivity and flame retardancy than EPS. Such as (b), (c).

Inorganic expanded vitrified microbead particles: particle diameter is 0.5~3.0mm; bulk density is 80~130kg/m3; flame retardant performance is grade A; thermal conductivity is product on-site mixing and stirring 3.1.1 raw material aggregate type 3.1.2 adhesive Powder 3.2 Product Preparation After the raw material granule aggregate is mixed according to the specific design ratio, the cement-based cementing material with the foaming agent is mixed into a homogenous hook slurry, which is formed by molding or smearing and dried.

The molding of the product uses cement as the main cementing material with special admixture.

4 Product application According to product performance, the product is mainly used in the field of building insulation, heat insulation and other areas with fire protection requirements, and can also be used as the basic material for building sound absorption and manufacturing insulation board.

4.1 Product thermal analysis In order to meet the relevant requirements of national building energy conservation and fire protection regulations, the current building wall insulation system in summer hot and cold winter area usually adopts 3.0cm hollow microbead insulation system. In the same building, if the same insulation effect is achieved, if the surface anti-cracking waterproof layer is roughly assumed, according to the analysis of thermal conductivity, it can be concluded that C2A building flame retardant insulation mortar (the apparent density is 240kg/m3) and When the thermal resistance of the 3.0cm hollow microsphere inorganic thermal insulation mortar is the same, it can be known that when the thermal insulation system is used, the thickness of the flame retardant thermal insulation mortar for C2A construction is only 2. visible, thermal conductivity analysis, C2A building flame retardant thermal insulation mortar It meets the requirements for thermal resistance of building exterior wall energy-saving specifications in hot summer and cold winter areas.

4.2 Market prospect analysis The product slurry has good workability and good construction performance. As a slurry insulation material, it replaces the currently popular expanded vitrified microbead insulation mortar, which has great market value. At present, 80% of the annual construction volume under construction in Sichuan Province is about 40 million square meters, using expanded vitrified microbead insulation mortar products.

The successful research and development of the project is conducive to promoting the development of building energy-saving materials industry, upgrading the industrial level, extending the industrial chain, promoting product structure and technical structure adjustment, and accelerating the promotion of independent brands.

5 Conclusion The performance of this product is in line with the current building insulation market. It is urgent to have the fireproof performance (Class A flame retardant) of the Ministry of Public Security Fire Department; the fire resistance of the product reaches the Class A flame retardant standard, which is better than the rubber powder polystyrene pellet insulation. System; its thermal conductivity This product can be used as an appropriate upgrade replacement for hollow vitrified microbead products.

According to its performance, the product is mainly used in the fields of building insulation and heat insulation with fire protection requirements, and can also be used as the basic material for building sound absorption and manufacturing insulation boards. It has good application prospects in cold winter and hot summer areas.

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