Flame-retardant EPS (expandable polystyrene) foam thermal-insulation board and preparation method thereof

Abstract

The invention discloses a flame-retardant EPS (expandable polystyrene) foam thermal-insulation board and a preparation method thereof. The method comprises the following steps: 1) preparing flame-retardant EPS prefoaming granules; 2) preparing a flame-retardant EPS foam board; 3) carrying out coating modification on the flame-retardant EPS foam board: adding a fireproof adhesive into a polystyrene board modification device, in which the flame-retardant EPS foam board is arranged, under the high pressure of 0.3-1.0 MPa, and standing under the pressure of 0.01-0.08 MPa for 10 seconds-10 minutes until the fireproof adhesive penetrates into the flame-retardant EPS foam board, thereby achieving the goal of coating modification; and 4) drying and curing to form. The heat conductivity coefficient of the flame-retardant EPS foam thermal-insulation board is lower than 0.055 w / m.k, the specific gravity is down to 150 Kg / m<3> below, the compression strength is greater than 150 KPa, and the heat value is less than 3 MJ / kg.

Description

technical field [0001] The invention belongs to the technical field of fire protection, and in particular relates to a preparation method of a flame-retardant polystyrene foam insulation board and the flame-retardant polystyrene foam insulation board prepared by the method. Background technique [0002] Building insulation materials play an important role in creating a suitable indoor thermal environment and saving energy in building insulation. In the current external wall insulation system, flame-retardant polystyrene (EPS) insulation boards are generally used. It has the characteristics of light bulk density, low thermal conductivity, long stable period, good permeability resistance, good heat insulation performance, convenient construction, and low engineering cost, so it is widely used. [0003] The patent application with document number CN102675762A discloses a halogen-free flame-retardant polystyrene foam material and a preparation method thereof, and CN102808461A d...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical problems that it is difficult to uniformly coat the fireproofing agent around the EPS foam particles in the patent document CN102952288A, so that it is difficult to improve the fireproofing grade of the polystyrene foam board, and the technical problem of long production cycle, and the purpose is to provide a new flame retardant polymer The preparation method of styrene foam insulation board comprises the steps:

Images