Modified melamine-compounded flame retarding-enhanced foam cement polyurethane composite insulation board

Abstract

The invention discloses a modified melamine-compounded flame retarding-enhanced foam cement polyurethane composite insulation board. The composite insulation board is prepared from, by weight, 3-4 parts of waste cotton and blast fibers, 1-1.2 parts of chlorinated paraffin, 0.3-0.34 part of fatty alcohol polyoxyethylene ether, 45-50 parts of ultrafine Portland cement, 3.5-4 parts of hydrogen peroxide with the concentration of 30 wt%, 3-3.5 parts of gypsum powder, 2-3 parts of stearic acid, 2.5-3 parts of aluminum sulfate, 1.6-1.8 parts of organosilicon latex, an appropriate amount of deionized water, 75-80 parts of polyoxypropylene polyol, 23-25 parts of isocyanate, 2.2-2.4 parts of N,N,N,N',N'-pentamethyldiethylenetriamine, 10-12 parts of n-pentane, 3-4 parts of silicone oil, 2-3 parts of ammonium polyphosphate, 0.1-0.2 part of dibutyltin dilaurate, 4-5 parts of melamine and 6-7 parts of 1-butyl-3-methylimidazolium hexafluorophosphate. The prepared composite insulation board is good in flame retardance, capable of saving energy and reducing consumption and worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a foamed cement-polyurethane composite thermal insulation board which is compounded with modified melamine and enhanced with flame retardancy. Background technique [0002] The implementation of building energy-saving policies and building fire protection standards has promoted the rapid development of wall insulation materials. Polyurethane rigid foam board, polystyrene foam board, phenolic foam board and other organic thermal insulation materials have been widely used in building thermal insulation projects because of their excellent thermal insulation performance. The fatal weakness of polyurethane foam is its combustion performance, which is easy to be ignited and releases harmful gases during the combustion process. Even the addition of flame retardants cannot fundamentally change this property, and the highest combustion level of polyurethane foam panels for con...

AI Technical Summary

Problems solved by technology

The composite insulation board made has good fire resistance, and the thickness is small, the overall density of the composite board is low, which reduces the energy consumption in the production process, environmental protection and energy saving; but because the foamed cement layer is located outside the insulation board, it is light and porous The characteristics make it have high water absorption, the higher the moisture content, the worse the insulation and the lower the strength, which limits the application of composite insulation boards, which need to be modified