Grindable polyurethane composite board and manufacture method thereof

Abstract

The invention relates to a grindable polyurethane composite board which comprises a hard-foam polyurethane thermal insulation layer in the middle layer and polymer cement interface layers arranged on the upper surface and the lower surface of the hard-foam polyurethane thermal insulation layer, wherein the polymer cement interface layers are directly compounded on the upper surface and the lower surface of the hard-foam polyurethane thermal insulation layer during foaming of the hard-foam polyurethane thermal insulation layer, and the polymer cement interface layers are made of waterproof and fireproof materials which can be directly grinded. The grindable polyurethane composite board can be embellished and grinded in on-wall construction, has excellent waterproof thermal-insulation performance, is prominent in system fireproofing, reduces the requirement for wall surface evenness of foundation building walls, and is convenient to construct. The efficiency of the grindable polyurethane composite board is 1.5 times as high as an ordinary polyurethane composite board. The manufacture method of the grindable polyurethane composite board can perform continuous production in plants, is high in manufacture efficiency and saves a large amount of production cost and construction cost.

Description

Technical field [0001] The invention relates to the field of energy-saving building materials, in particular to an abradable polyurethane composite board with low requirements on the flatness of building walls and a production method thereof. Background technique [0002] With the gradual implementation of my country's third-step building energy saving goal of 65%, polyurethane, as a high-quality and efficient thermal insulation and waterproof material, has gradually expanded its application on walls and roofs, and has achieved good results. In the external thermal insulation engineering of building exterior walls, the thin plastering system is the thermal insulation and waterproofing system with the longest history, the most mature technology and the most widely used. Polyurethane composite board as the thermal insulation substrate of the system has developed rapidly in recent years, but the existing The surface material of polyurethane composite board is hard and cannot be poli...

AI Technical Summary

Problems solved by technology

In the external insulation engineering of building exterior walls, thin plastering system is the thermal insulation and waterproof system with the longest history, the most mature technology and the most widely used. Polyurethane composite board as the thermal insulation base material of this system has developed rapidly in recent years, but the existing The surface material of polyurethane composite board is relatively hard, which cannot be polished and leveled like polystyrene board, which limits its application in buildings with poor wall flatness, and also seriously affects the construction efficiency of polyurethane composite board thin plastering system

[0003] The boards that can be polished and modified in the existing market include polystyrene boards, polyurethane bare boards, etc., but they do not have a veneer layer. On the one hand, they have poor adhesion to the wall, and the safety of anti-negative wind pressure and anti-gravity shear is not good. On the other hand, without the protection of the inorganic surface layer, it cannot block the attack of the flame, and the system has poor fire resistance

Images