Production method for multifunctional rigid foam polyurethane composite board

Abstract

The invention discloses a preparation method used for preparing a multifunctional polyurethane hard foam composite board. The method comprises the following steps: a polymer cement sheet is prefabricated; a polyurethane foaming machine manufacturing line is adopted to froth the PAPI and conjugate polyether into the polyurethane board and the cement sheet is simultaneously compounded on two surfaces of the polyurethane board to prepare the polyurethane insulation composite board. The preparation method of the polymer cement sheet comprises the following steps: after an adhesive and an inorganic powder are mixed according to the proportion of 1:1.5 to 2, the mixture is pressed with a non-woven cloth by the manufacturing line; the adhesive is prepared by the following materials according to the weight portions: 75 to 85 percent of polymer emulsion, 5 to 10 percent of flame retardant, 1 to 6 percent of film-forming additives, 5 to 10 percent of deionized water and 0 to 1.5 percent of thickener; the inorganic powder is prepared by the following materials according to the weight portions: 40 to 60 percent of stuffing, 10 to 25 percent of solid flame retardant and 25 to 40 percent of cement. The composite board prepared by the method integrates the fireproof, waterproof, high-intensity and insulation functions into a whole and can be used for the outer-wall waterproof, fireproof and insulation engineering of buildings.

Description

technical field [0001] The invention relates to a method for manufacturing a rigid foam polyurethane composite board used for exterior walls of buildings, in particular to a method for manufacturing a multifunctional rigid foam polyurethane composite board. Background technique [0002] Disclosed in the prior art is that a kind of application number is 200510045579.4 the process method of producing rigid polyurethane composite board, and its process method is to make polymer sheet material for standby at first, and the production method of polymer sheet material is to adopt acrylic series, EVA series etc. Adhesive and cement, quartz powder, talcum powder and inorganic powder are mixed in a weight ratio of 100:20-40, and the mixture and non-woven fabric are passed through the polymer sheet production line to produce a polymer sheet, and then a polyurethane foaming machine is used to The continuous production line foams polyisocyanate and combined polyether into polyurethane b...

AI Technical Summary

Problems solved by technology

The hard foam polyurethane composite board made by this method has no flame-retardant performance due to the polymer sheet of the surface layer, and its waterproof and impermeability performance is low, and its strength is poor, which leads to the rigid foam polyurethane composite board not only poor in waterproof effect, but also has no fire resistance. Performance, can not meet the requirements of the fire protection design of the external insulation system of the external wall of the building