A low-thermal-conduction class A non-combustible sandwich insulation board and its manufacturing method

Abstract

The invention relates to a low-heat-conductivity A-grade non-ignitable sandwich insulation board and a manufacturing method thereof. The insulation board is formed by compounding a lower-layer board, a middle core layer and an upper-layer board. The upper-layer board and the lower-layer board are both high-strength fiber cement boards or high-strength calcium silicate boards or cement felt. A vacuum plate or a combined body of mineral wool sliver / mineral wool felt and modified rigid polyurethane foam is adopted as the middle core layer. The modified rigid polyurethane foam is prepared from, by weight, polyhydric alcohol materials, ethylenediamine poly propylene oxide tetraol, melamine, a triethylene diamine solution, dichloroethane, polyaldoxyl ether copolymer, tri(2-chloroethyl)phosphate and isocyanate. According to the insulation board, the advantages of organic and inorganic materials are complemented, superposition and efficiency increase can be achieved, the ideal technical effects of heat insulation and energy saving can be achieved, the fireproof grade of the insulation board can reach the grade A, and the practical technical effects of heat insulation and energy saving and fire prevention and flame retarding are achieved.

Description

technical field [0001] The invention belongs to the field of energy-saving building materials, and in particular relates to a low thermal conduction grade A non-combustible sandwich insulation board and a manufacturing method thereof. Background technique [0002] In China, building energy-saving wall insulation has become a mandatory standard in the construction industry. Usually, the thermal insulation technical measures of building walls basically adopt the method of powder spraying, pasting or externally hanging the thermal insulation layer on the outer wall of the building. Due to the influence of material characteristics, technology, climate and construction quality, the thermal insulation layer of most buildings is difficult to match. The main structure has the same life span. At the same time, some materials with good thermal insulation performance have poor fireproof performance, and materials with good fireproof performance have strong water absorption. After abso...

AI Technical Summary

Problems solved by technology

Usually, the thermal insulation technical measures of building walls basically adopt the method of powder spraying, pasting or externally hanging the thermal insulation layer on the outer wall of the building. Due to the influence of material characteristics, technology, climate and construction quality, the thermal insulation layer of most buildings is difficult to match. The main structure has the same life span

At the same time, some materials with good thermal insulation performance have poor fireproof performance, and materials with good fireproof performance have strong water absorption. After absorbing water, the insulation layer is not only easy to lose the heat insulation function, but even cracks, hollows, falls off, and hurts people. There are many problems such as building energy-saving failure, and these thermal insulation technical measures still need separate construction, complicated construction, prolonged construction period, high cost, difficult quality control, many safety hazards, short service life, difficult maintenance and repair in the later period, and high cost of secondary decoration and other disadvantages

Therefore, in the prior art, materials such as metal sheets, glass fiber cement cloth, and mineral wool boards are laminated with insulation materials such as polyurethane rigid foam boards. This composite insulation board has poor mechanical properties and unsatisfactory flame-retardant effects. Can not be baked at high temperature, can not meet higher fire protection standards; there are also materials such as polyurethane foam board coated with cement mortar on both sides as a composite insulation board, but the production process of this insulation board is complicated, and it is easy to absorb water and crack, resulting in a decline in insulation performance , and it needs to be solidified and cured for 28 days before leaving the factory, resulting in a long production cycle, a large factory space, a low level of industrial production, and high investment and production costs.

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