Preparation method of fireproof flame-retardant interfacial agent for exterior insulation phenol formaldehyde foam board of outer wall

Abstract

The invention discloses a preparation method of a fireproof flame-retardant interfacial agent for an exterior insulation phenol formaldehyde foam board of an outer wall. The preparation method comprises a raw material proportioning and producing process. The fireproof flame-retardant interfacial agent is prepared by using a flame-retardant system with a vinyl acetate-ethylene copolymerization emulsion as base stock, ammonium polyphosphate as a dehydration catalyst, pentaerythritol as a carbonizing agent and melamine as a foaming agent and adding other auxiliaries. The phenol formaldehyde foam board disclosed by the invention is safe, environment-friendly, non-toxic and tasteless; a layer of interface with favorable flexibility and bonding force and excellent fireproof and flame-retardant property is formed on the surface of the phenol formaldehyde foam board, so that the toughness of the surface is increased, the bonding strength between the surface and a bonding and plastering material is improved and the functions of preventing the phenol formaldehyde foam board from pulverizing and slagging off is achieved; and therefore the using effect of the phenol formaldehyde foam board in the external insulation of the outer wall can be remarkably improved.

Description

technical field [0001] The invention relates to the production technical category of a building interface agent, in particular to a preparation method of a fire-proof and flame-retardant interface agent for an external thermal insulation phenolic foam board. Background technique [0002] At present, thermal insulation materials used for external thermal insulation of building exterior walls are mainly divided into two types: inorganic and organic. Larger, the thermal insulation effect is not ideal, it is difficult to meet the requirements of the national building energy-saving standards, and the dosage is small; organic materials such as polystyrene foam EPS, XPS and polyurethane rigid foam PU, etc., are light in weight, good thermal insulation and heat insulation effects, and are widely used in buildings External wall insulation, but its biggest disadvantage is poor fire safety, easy aging, easy to burn, large smoke and high toxicity when burning, and its service life and f...

AI Technical Summary

Problems solved by technology

However, the existing phenolic foam boards in our country still have technical defects such as hardness and brittleness, easy pulverization and slag drop. It is necessary to brush a special fire-proof and flame-retardant interface agent on the surface to increase the strength of the surface of the phenolic foam board, prevent pulverization and slag, and improve its bonding strength with the plastering material. Fireproof and flame retardant interface agent for external insulation phenolic foam board