Building wall insulation composite board and preparation method thereof

Abstract

The invention relates to a building wall insulation composite board and a preparation method of the building wall insulation composite board, and belongs to the technical field of building energy-saving insulation materials and preparation methods. A wall insulation hard foam polyurethane composite board comprises inner cores, protective layers coated on the peripheries of the inner cores and interface layers coated on the upper surfaces and the lower surfaces of the protective layers in an attached mode. The inner cores are vacuum insulation boards. The preparation method of the wall insulation hard foam polyurethane composite board comprises preparation of interface coiled materials: coating prepared flame-retarded polymer mucilage on base materials to produce the interface coiled materials, and manufacturing of the protective layers and the wall insulation hard foam polyurethane composite board. The insulation composite board has good thermal insulation performance, waterproof performance and heat insulation performance, can satisfy 65% requirements of building energy efficiency very well, is high in bonding strength and convenient to construct and operate, greatly increases overall fireproof performance of the whole wall heat-insulation system after being arranged on a wall, and can be widely applied to the inner portions of walls, outer walls, and roof covering thermal insulation systems, heat insulation systems and waterproof systems.

Description

[0001] technical field [0002] The invention relates to a building wall thermal insulation composite board and a preparation method thereof, belonging to the technical field of building energy-saving thermal insulation materials and preparation methods. Background technique [0003] Building energy conservation is a sustainable development strategy vigorously advocated by the Chinese government in recent years. It is an important national policy that contributes to energy conservation, emission reduction and environmental protection. Thermal insulation and heat insulation treatment of building walls is one of the important measures to implement building energy conservation. In order to meet the requirement of 65% building energy saving, building wall insulation materials play an increasingly important role in building energy saving, and the country has higher and higher requirements on the fire performance of building walls. [0004] At present, the materials used for build...

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Problems solved by technology

Rigid foam polyurethane insulation material has excellent heat preservation, heat insulation and waterproof properties, and its thermal conductivity is lower than 0.024 W / m·K. Wall insulation material, but it is an organic material. In order to improve the fire performance of rigid polyurethane foam insulation materials, it is usually necessary to add a certain amount of flame retardants. These flame retardants generally have some effects on certain properties of rigid polyurethane foam insulation materials. Adverse effects, but also increase its cost, which affects the wide application of rigid foam polyurethane insulation materials in building wall insulation to a certain extent

[0005] Phenolic foam insulation materials have excellent thermal insulation and fireproof properties at the same time, the thermal conductivity is lower than 0.03 W / m K, and its oxygen index can reach more than 50%, but ordinary phenolic foam insulation boards generally have surface pulverization and slag drop Serious, low bonding strength with the bonded mortar, etc., limit the application of phenolic foam insulation materials in building insulation

[0006] Vacuum thermal insulation material is a new type of thermal insulation material prepared by advanced technology. When it is used for building wall insulation, there are the following problems: 1. The bonding force between it and ordinary bonding mortar is not enough, and anchors cannot be used for auxiliary bonding, so it is bonded to the wall 2. In the process of transportation and storage, the vacuum heat insulation material may be deformed, damaged and leaked. That is to say, the internal vacuum cannot be continuously guaranteed; 3. The construction operation is inconvenient. When stacked in the open air, the sun and rain can easily cause deformation and damage of the board, etc. These shortcomings limit the use of vacuum insulation materials in building walls. Wide application in body insulation

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