Polyurethane rigid foam exterior wall thermal insulation material with high flame retardancy and preparation method thereof

Abstract

The invention provides a polyurethane rigid foam exterior wall thermal insulation material with high flame retardancy and a preparation method thereof. The polyurethane rigid foam exterior wall thermal insulation material with high flame retardancy comprises a component A and a component B, wherein the component A consists of phenolic resin, brominated epoxy resin, phosphorated flame retardant polyether polyol, organosilicon foam stabilizer, catalyst dimethylethanolamine, catalyst dibutyltin dilaurate, flame retardant and foaming agent 1,1-dichloro-1-fluoroethane, and the component B is flame retardant polyisocyanate curing agent. The invention also provides a preparation method of the exterior wall thermal insulation material. The polyurethane rigid foam exterior wall thermal insulation material has excellent mechanical property and high flame retardancy, overcomes the problem that the fireproof flame retardancy and the mechanical property of the traditional polyurethane rigid foam thermal insulation materials are mutually in contradiction and is suitable for exterior wall thermal construction of a building with higher fireproof level requirement.

Description

technical field [0001] The invention belongs to the technical field of external wall thermal insulation, and in particular relates to a spray-coated highly flame-retardant polyurethane rigid foam external wall thermal insulation material and a preparation method thereof. Background technique [0002] The organic insulation materials currently used on a large scale in my country's building energy conservation mainly include EPS (polystyrene foam), PS (extruded polystyrene foam) and PU (polyurethane foam), all of which are flammable organic insulation materials. The biggest advantage is the quality Lightweight, good heat preservation and heat insulation; the biggest defect is poor fire safety, easy aging, and easy burning. If these new building energy-saving materials have not been modified by the chemical structure of flame retardant and smoke reduction, if they are simply added with flame retardants, there will be serious fire hazards, leading to frequent building fire accide...

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Problems solved by technology

[0005] In view of the main problems existing in the combination of polyurethane rigid foam insulation systems at home and abroad, combined with the current research progress of polyurethane rigid foam fire and flame retardant technology, polyurethane insulation materials have reached the national standard B1 or higher fire protection level, and the single addition of flame retardant technology The problem cannot be solved, and there is a problem that the fire-proof and flame-retardant properties of polyurethane rigid foam insulation materials are contradictory with the mechanical properties. The present invention uses high flame-retardant resins to modify the combined polyether to improve flame retardancy while maintaining its excellent mechanical properties. At the same time, a systematic solution is proposed in combination with the addition of flame retardants and flame retardant curing agents

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