Exterior wall waterproofing heat-insulating decorating integrated material and preparation method thereof

Abstract

The invention relates to an exterior wall waterproofing heat-insulating decorating integrated material and a preparation method thereof.The preparation method includes: using conventional resin like polyurea and polyurethane as raw materials, adding compound micropowder prepared from solid waste and sludge, and adding a mixed modifier and a thixotropic agent to prepare A-compound slurry; adding a promoter and a hardener, and performing spray coating, brush coating, roll coating and pouring methods to obtain the exterior wall waterproofing heat-insulating decorating integrated material.The material has the comprehensive advantages of good waterproof effect, high heat insulativity, high hardness, high hole closing rate, low density, good anti-seepage performance, high corrosion resistance, low linear expansion coefficient, high softening temperature, oxidization resistance, aging resistance, flame retardancy and firmness in binding with a substrate.When the material is used for building exterior walls, multiple times of leveling, waterproofing, heat insulating and decorating construction are not needed, on-site moisture-free operation and one-time forming can be realized, and the material is short in construction period, extremely low in cost and great in market prospect.

Description

technical field [0001] The invention relates to an exterior wall waterproof, thermal insulation and decoration integrated material and a preparation method thereof. Background technique [0002] In recent years, the concept of waterproofing, thermal insulation and energy saving of building walls has been deeply rooted in the hearts of the people. The external waterproofing and thermal insulation of external walls has become the mainstream of energy-saving forms of walls due to its many advantages. The existing exterior wall of the building comprises base wall body blank, cement mortar leveling layer, waterproof layer, bonding mortar, thermal insulation layer, plastering layer and finishing layer successively from the inside to the outside. However, the various building exterior wall waterproofing and thermal insulation technologies currently used mainly have the following problems: [0003] (1) During the construction of the external waterproof and thermal insulation layer ...

AI Technical Summary

Problems solved by technology

[0003] (1) During the construction of the external waterproof and thermal insulation layer of the external wall, a wide variety of materials are required, multiple constructions are required, the process is complicated, and the cost is high. The cost is about 150-180 yuan / ㎡

[0004] (2) The thermal expansion coefficient of the insulation layer and the waterproof layer differ greatly. Under the action of alternating temperature, the interface layer between the two layers is easy to crack and peel off, resulting in moisture or even water seepage, which greatly reduces the energy-saving effect of the outer wall and causes leakage. Points are not easy to find, and maintenance costs are high

[0005] (3) Affected by the construction process, cracks of different degrees often appear on the window sills, columns, beams, etc. of the exterior walls of the building. During the use process, these cracks will continue to grow, resulting in damage to the waterproof and thermal insulation system

[0006] (4) When the existing building is upgraded and rebuilt, the bearing weight has been determined. Since the load on the roof cannot be increased, the waterproof and thermal insulation finish layer of the original roof needs to be removed, which is difficult, long construction period, disturbing people, and high cost

[0007] (5) When the existing waterproof and thermal insulation materials use inorganic materials, the water absorption rate is high, it is easy to crack, easy to seep water, and the thermal insulation effect is poor

[0009] (1) The material used for waterproofing and heat preservation has basically not changed, and there are still problems such as easy cracking of the interface, high water absorption, flammability, and high cost

[0010] (2) Existing materials such as polyurethane and EPS have low strength, are easy to deform, and are easy to age. After doping with inorganic materials such as vitrified beads, there are still problems such as poor thermal insulation effect and high cost.

[0011] (3) Multi-layer material assembly has not yet achieved true integration

[0012] (4) The thickness of the integrated material is still relatively large, which makes bonding or anchoring difficult, the interface is easy to crack, and complex shapes are difficult to shape, and it is difficult to obtain diversified styles

[0013] (5) During on-site spraying construction, the temperature has a great influence, and when construction is carried out in high cold or high heat areas, the construction is difficult and the effect is poor

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