Heat insulation and sound insulation material for flour and its preparing method

Abstract

The heat insulating and sound insulating material for floor consists of cement as cementing material, polystyrene foam grain, flyash boulder and other light aggregate. It is new type of building function material compounded through surface modification of polystyrene foam grain, raising construction performance and adhesion with polymer adhesive and water maintaining agent, toughening with polymer fiber and other measures. The preparation process includes surface modification of polystyrene foam grain, and mixing the materials via stirring. The heat insulating and sound insulating material for floor has good placeability, good construction performance, high adhesion strength, high pressure resistance, high heat insulating performance, high sound isolating performance, etc.

Description

technical field [0001] The invention relates to thermal insulation and sound insulation materials in construction industry. Background technique [0002] "Design Standards for Energy Conservation of Residential Buildings in Hot Summer and Cold Winter Areas" requires that the floor heat transfer coefficient be ≤2.0W / m 2 K, the heat transfer coefficient of the ground floor elevated floor is ≤1.5W / m 2 ·K. my country's residential buildings generally use cast-in-place concrete floors, and the heat transfer coefficient is 3.0W / m 2 ·K above, can not meet the requirements of mandatory provisions of energy conservation standards. On the other hand, the solid sound insulation performance of the concrete floor is very poor, and the neighbors are plagued by floor impact noise. The Ministry of Construction's "Technical Key Points for Healthy Housing Construction" requires that the impact sound pressure level of residential floors be ≤65dB. It is imperative to use heat insulation an...

AI Technical Summary

Problems solved by technology

Although the aforementioned two documents involved the main raw materials and performance of polystyrene foam insulation materials, they did not introduce the material formula; the third article involved thermal insulation and sound insulation materials, but did not involve polystyrene foam insulation, and did not specify use

None of the three articles have reported their engineering applications

In the aspect of EPS as light aggregate for thermal insulation materials, since the interface wetting of inorganic gelling materials to polystyrene foam particles (hereinafter referred to as EPS) has not been effectively solved, technically rely on high-volume polymer binders to solve the problem of inorganic gelling materials. Combined with EPS, the problem of poor workability of fresh slurry still exists

In terms of improving toughness and crack resistance, polymer toughening is generally used, and there are common defects such as high water absorption, large dry shrinkage, and poor crack resistance. It needs to be used as alkali-resistant glass fiber mesh cloth to strengthen polymer cement mortar crack resistance. The protective layer

Insulation mortar used for floor insulation and sound insulation has problems such as low compressive strength, high water absorption, large thickness, and unsatisfactory sound insulation, and its application has great limitations.

The strength of polystyrene board and polyurethane rigid foam is very low. When it is used on the floor, special reinforcement structure is required, which greatly increases the cost of floor engineering. Therefore, polystyrene board and polyurethane rigid foam concrete floor composite floor are rarely used in my country. use