Polyurethane-compounded cement-based expanded-perlite heat preservation plate and preparing method thereof

Abstract

The invention discloses a polyurethane-compounded cement-based expanded-perlite heat preservation plate and a preparing method thereof. The polyurethane composite cement-based expanded-perlite heat preservation plate is prepared from 50-100 parts of expanded perlite, 40-90 parts of cement, 5-10 parts of two-component polyurethane adhesive, 0.1-0.5 part of coupling agent, 0.1-0.25 part of fiber, 0.1-0.5 part of reusable dispersion emulsion powder, 40-90 parts of water, 0.5-2 parts of early strength agent and 0.1-0.5 part of water reducing agent. According to the polyurethane-compounded cement-based expanded-perlite heat preservation plate and the preparing method thereof, cement mortar is modified through polyurethane, polyurethane resin and the cement are evenly dispersed into the expanded perlite, hydration of the cement and solidification of polyurethane are carried out at the same time, and the mutually-filled whole structure is formed; the expanded perlite and the polyurethane cement-based composite are combined, and the polyurethane composite cement-based expanded-perlite heat preservation plate is prepared in a compression-molding mode; the defects of the expanded perlite are effectively overcome, and meanwhile the advantages and the like of the water resistance and heat preservation performance of the polyurethane material, the low heat conductivity of the expanded perlite, the high weather resistance of concrete and the liker are used.

Description

technical field [0001] The invention relates to a preparation method of a roof and wall insulation material, in particular to a polyurethane composite cement-based expanded perlite insulation board and a preparation method thereof. Background technique [0002] Thermal insulation materials refer to materials or material composites used for building envelope or thermal equipment to resist heat flow transfer, including both thermal insulation materials and cold insulation materials. The significance of thermal insulation materials is to meet the thermal environment of building space or thermal equipment on the one hand, and to save energy on the other hand. With the increasing tension of energy sources in the world, the significance of thermal insulation materials in terms of energy saving is becoming more and more prominent. As far as the air conditioner for general residential heating is concerned, the use of thermal insulation enclosure materials can save energy by 50-80% ...

AI Technical Summary

Problems solved by technology

However, expanded perlite has high water absorption and is easy to pulverize, and its volume shrinkage rate is relatively large during slurry mixing, resulting in low strength of concrete in the later stage and hollowing and cracking.

Its use is very limited