Expanded perlite-polyurethane composite insulating board and manufacturing technique thereof

Abstract

The present invention discloses a heat preservation plate compounded by expanded perlite and polyurethane and the manufacturing process. The present invention is a plate using the expanded perlite as aggregate, and the polyurethane as glue material. The manufacturing process is that: the expanded perlite is sent to a rotating rotary drum, and at the same time, the polyurethane is ejected into the rotary drum according to the weight ratio; the expanded perlite in the rotary drum is being mixed and contacted with the polyurethane flog enough and continually; and then the mixture is taken out from a material-out mouth and then is to be put in a mould with some size for shaking and pressed. After being hardened in the stated temperature, the mixture is to be cut and then the heat preservation plate compounded by expanded perlite and polyurethane will be obtained. The present invention solves the shortcomings that the mixing for the mortar heat preservation products is not even and the quality is difficult to be controlled and so on. The heat preservation plate compounded by expanded perlite and polyurethane is with much lower density, much lower heat conductivity coefficient, much better heat preservation effect and much better water permeability, which overcomes the shortcomings in the foam polyurethane plate and the extruded plate that the vapor is hard to be permeated. The present invention has the advantages of low cost and convenient construction. The present invention can be manufactured in the industrialized mode and the quality can be controlled effectively.

Description

technical field [0001] The invention relates to the field of building energy conservation, in particular to an expanded perlite-polyurethane composite thermal insulation board and a production process thereof. Background technique [0002] The total energy consumption of buildings in China has been increasing year by year, and its proportion in total energy consumption has risen from 10% in the late 1970s to 27.8% in recent years. The biggest energy consumption point of buildings is heating and air conditioning. It is reported that the energy consumption of heating and air conditioning in my country accounts for 55% of the total energy consumption of buildings. According to reports, my country's urban and rural existing buildings amount to more than 43 billion square meters. Among such a huge number of buildings, the most optimistic estimate is that only about 5% meet the energy-saving building standards; even for new buildings, more than 90% are still high-energy buildings....

AI Technical Summary

Problems solved by technology

[0004] In the external thermal insulation system of the external wall, the external thermal insulation system of the external wall with thin plastering of polystyrene board accounts for a large proportion, and the TT technique is relatively perfect, but because the water vapor transmission rate of the polystyrene foam thermal insulation board is relatively low, it is very difficult It is easy to condense between the board and the wall, causing the wall to be damp and moldy, which not only affects the service life of the insulation system, but also affects the indoor living environment

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