A kind of highly flame-retardant rigid polyurethane foam material and preparation method thereof

Abstract

The invention discloses a high-flame-retardant hard polyurethane foam material. The foam material consists of an A component and a B component, wherein the A component is polyisocyanate with degree of functionality ranging from 2.0 to 3.5, and the B component consists of flame-retardant polyether or polyester polyol containing phosphor, flame-retardant polyether or polyester polyol containing halogen, polyether polyol, polyolefin polyol, a foam stabilizing agent, a foaming agent, a cross linker, a chain extender, a catalyst and a fire retardant. The material disclosed by the invention is excellent in mechanical performance, high-flame-retardant performance and long storage resistance, and the material overcomes shortcoming of poor storage performance of the original highly flame-retardant hard polyurethane foam material as well as a problem of contradictory fire retardant and mechanical performance; and the material is applicable to buildings with comparatively high fire-retardant grade.

Description

technical field [0001] The invention relates to a high flame-retardant rigid polyurethane foam material with durable storage performance and a preparation method thereof, belonging to the field of construction chemical materials. Background technique [0002] In recent years, fires caused by construction sites and building materials in my country have become more frequent. Nanjing Central International Plaza, Harbin Longitude and Latitude 360-degree Twin Star Building, Jinan Olympic Sports Center, Beijing CCTV New Site, Shanghai Jiaozhou Road Teachers’ Apartment, Shenyang Dynasty Wanxin International Major fires in buildings and other major fires are related to construction sites and building materials, which have caused great losses to the country and people's lives and property. The Ministry of Public Security has made it clear that the sprayed polyurethane rigid foam used for building insulation must reach Class A flame retardancy, and the minimum must not be lower than Cla...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention discloses a high flame-retardant rigid polyurethane foam material, which not only has excellent mechanical properties and high flame-retardant performance, but also has durable storage performance, which overcomes the original high flame-retardant rigid polyurethane foam Due to the disadvantages of poor storage performance of high-quality polyurethane foam materials, and the contradiction between fire and flame retardancy and mechanical properties, it is suitable for buildings with higher fire protection levels.